diff --git a/OpenCL/m09800_a0-optimized.cl b/OpenCL/m09800_a0-optimized.cl
index ffa5c1388..3257c0cbb 100644
--- a/OpenCL/m09800_a0-optimized.cl
+++ b/OpenCL/m09800_a0-optimized.cl
@@ -17,11 +17,15 @@
 #include "inc_hash_sha1.cl"
 #endif
 
+#define MIN_NULL_BYTES 10
+
 typedef struct oldoffice34
 {
   u32 version;
   u32 encryptedVerifier[4];
   u32 encryptedVerifierHash[5];
+  u32 secondBlockData[8];
+  u32 secondBlockLen;
   u32 rc4key[2];
 
 } oldoffice34_t;
@@ -252,21 +256,21 @@ KERNEL_FQ void m09800_m04 (KERN_ATTR_RULES_ESALT (oldoffice34_t))
     w0[1] = salt_buf[1];
     w0[0] = salt_buf[0];
 
-    u32 digest[5];
+    u32 pass_hash[5];
 
-    digest[0] = SHA1M_A;
-    digest[1] = SHA1M_B;
-    digest[2] = SHA1M_C;
-    digest[3] = SHA1M_D;
-    digest[4] = SHA1M_E;
+    pass_hash[0] = SHA1M_A;
+    pass_hash[1] = SHA1M_B;
+    pass_hash[2] = SHA1M_C;
+    pass_hash[3] = SHA1M_D;
+    pass_hash[4] = SHA1M_E;
 
-    sha1_transform (w0, w1, w2, w3, digest);
+    sha1_transform (w0, w1, w2, w3, pass_hash);
 
-    w0[0] = digest[0];
-    w0[1] = digest[1];
-    w0[2] = digest[2];
-    w0[3] = digest[3];
-    w1[0] = digest[4];
+    w0[0] = pass_hash[0];
+    w0[1] = pass_hash[1];
+    w0[2] = pass_hash[2];
+    w0[3] = pass_hash[3];
+    w1[0] = pass_hash[4];
     w1[1] = 0;
     w1[2] = 0x80000000;
     w1[3] = 0;
@@ -279,6 +283,8 @@ KERNEL_FQ void m09800_m04 (KERN_ATTR_RULES_ESALT (oldoffice34_t))
     w3[2] = 0;
     w3[3] = (20 + 4) * 8;
 
+    u32 digest[5];
+
     digest[0] = SHA1M_A;
     digest[1] = SHA1M_B;
     digest[2] = SHA1M_C;
@@ -337,7 +343,93 @@ KERNEL_FQ void m09800_m04 (KERN_ATTR_RULES_ESALT (oldoffice34_t))
 
     rc4_next_16 (rc4_key, 16, j, digest, out);
 
-    COMPARE_M_SIMD (out[0], out[1], out[2], out[3]);
+    // initial compare
+
+    int digest_pos = find_hash (out, digests_cnt, &digests_buf[digests_offset]);
+
+    if (digest_pos == -1) continue;
+
+    if (esalt_bufs[digests_offset].secondBlockLen != 0)
+    {
+      w0[0] = pass_hash[0];
+      w0[1] = pass_hash[1];
+      w0[2] = pass_hash[2];
+      w0[3] = pass_hash[3];
+      w1[0] = pass_hash[4];
+      w1[1] = 0x01000000;
+      w1[2] = 0x80000000;
+      w1[3] = 0;
+      w2[0] = 0;
+      w2[1] = 0;
+      w2[2] = 0;
+      w2[3] = 0;
+      w3[0] = 0;
+      w3[1] = 0;
+      w3[2] = 0;
+      w3[3] = (20 + 4) * 8;
+
+      digest[0] = SHA1M_A;
+      digest[1] = SHA1M_B;
+      digest[2] = SHA1M_C;
+      digest[3] = SHA1M_D;
+      digest[4] = SHA1M_E;
+
+      sha1_transform (w0, w1, w2, w3, digest);
+
+      digest[0] = hc_swap32_S (digest[0]);
+      digest[1] = hc_swap32_S (digest[1]);
+      digest[2] = 0;
+      digest[3] = 0;
+
+      digest[1] &= 0xff; // only 40-bit key
+
+      // second block decrypt:
+
+      rc4_init_16 (rc4_key, digest);
+
+      u32 secondBlockData[4];
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[0];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[1];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[2];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[3];
+
+      j = rc4_next_16 (rc4_key, 0, 0, secondBlockData, out);
+
+      int null_bytes = 0;
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[4];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[5];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[6];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[7];
+
+      rc4_next_16 (rc4_key, 16, j, secondBlockData, out);
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      if (null_bytes < MIN_NULL_BYTES) continue;
+    }
+
+    const u32 final_hash_pos = digests_offset + digest_pos;
+
+    if (atomic_inc (&hashes_shown[final_hash_pos]) == 0)
+    {
+      mark_hash (plains_buf, d_return_buf, salt_pos, digests_cnt, digest_pos, final_hash_pos, gid, il_pos, 0, 0);
+    }
   }
 }
 
@@ -464,21 +556,21 @@ KERNEL_FQ void m09800_s04 (KERN_ATTR_RULES_ESALT (oldoffice34_t))
     w0[1] = salt_buf[1];
     w0[0] = salt_buf[0];
 
-    u32 digest[5];
+    u32 pass_hash[5];
 
-    digest[0] = SHA1M_A;
-    digest[1] = SHA1M_B;
-    digest[2] = SHA1M_C;
-    digest[3] = SHA1M_D;
-    digest[4] = SHA1M_E;
+    pass_hash[0] = SHA1M_A;
+    pass_hash[1] = SHA1M_B;
+    pass_hash[2] = SHA1M_C;
+    pass_hash[3] = SHA1M_D;
+    pass_hash[4] = SHA1M_E;
 
-    sha1_transform (w0, w1, w2, w3, digest);
+    sha1_transform (w0, w1, w2, w3, pass_hash);
 
-    w0[0] = digest[0];
-    w0[1] = digest[1];
-    w0[2] = digest[2];
-    w0[3] = digest[3];
-    w1[0] = digest[4];
+    w0[0] = pass_hash[0];
+    w0[1] = pass_hash[1];
+    w0[2] = pass_hash[2];
+    w0[3] = pass_hash[3];
+    w1[0] = pass_hash[4];
     w1[1] = 0;
     w1[2] = 0x80000000;
     w1[3] = 0;
@@ -491,6 +583,8 @@ KERNEL_FQ void m09800_s04 (KERN_ATTR_RULES_ESALT (oldoffice34_t))
     w3[2] = 0;
     w3[3] = (20 + 4) * 8;
 
+    u32 digest[5];
+
     digest[0] = SHA1M_A;
     digest[1] = SHA1M_B;
     digest[2] = SHA1M_C;
@@ -549,7 +643,92 @@ KERNEL_FQ void m09800_s04 (KERN_ATTR_RULES_ESALT (oldoffice34_t))
 
     rc4_next_16 (rc4_key, 16, j, digest, out);
 
-    COMPARE_S_SIMD (out[0], out[1], out[2], out[3]);
+    // initial compare
+
+    if (out[0] != search[0]) continue;
+    if (out[1] != search[1]) continue;
+    if (out[2] != search[2]) continue;
+    if (out[3] != search[3]) continue;
+
+    if (esalt_bufs[digests_offset].secondBlockLen != 0)
+    {
+      w0[0] = pass_hash[0];
+      w0[1] = pass_hash[1];
+      w0[2] = pass_hash[2];
+      w0[3] = pass_hash[3];
+      w1[0] = pass_hash[4];
+      w1[1] = 0x01000000;
+      w1[2] = 0x80000000;
+      w1[3] = 0;
+      w2[0] = 0;
+      w2[1] = 0;
+      w2[2] = 0;
+      w2[3] = 0;
+      w3[0] = 0;
+      w3[1] = 0;
+      w3[2] = 0;
+      w3[3] = (20 + 4) * 8;
+
+      digest[0] = SHA1M_A;
+      digest[1] = SHA1M_B;
+      digest[2] = SHA1M_C;
+      digest[3] = SHA1M_D;
+      digest[4] = SHA1M_E;
+
+      sha1_transform (w0, w1, w2, w3, digest);
+
+      digest[0] = hc_swap32_S (digest[0]);
+      digest[1] = hc_swap32_S (digest[1]);
+      digest[2] = 0;
+      digest[3] = 0;
+
+      digest[1] &= 0xff; // only 40-bit key
+
+      // second block decrypt:
+
+      rc4_init_16 (rc4_key, digest);
+
+      u32 secondBlockData[4];
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[0];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[1];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[2];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[3];
+
+      j = rc4_next_16 (rc4_key, 0, 0, secondBlockData, out);
+
+      int null_bytes = 0;
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[4];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[5];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[6];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[7];
+
+      rc4_next_16 (rc4_key, 16, j, secondBlockData, out);
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      if (null_bytes < MIN_NULL_BYTES) continue;
+    }
+
+    if (atomic_inc (&hashes_shown[digests_offset]) == 0)
+    {
+      mark_hash (plains_buf, d_return_buf, salt_pos, digests_cnt, 0, digests_offset + 0, gid, il_pos, 0, 0);
+    }
   }
 }
 
diff --git a/OpenCL/m09800_a1-optimized.cl b/OpenCL/m09800_a1-optimized.cl
index 07bfb15ca..891d7ca67 100644
--- a/OpenCL/m09800_a1-optimized.cl
+++ b/OpenCL/m09800_a1-optimized.cl
@@ -15,11 +15,15 @@
 #include "inc_hash_sha1.cl"
 #endif
 
+#define MIN_NULL_BYTES 10
+
 typedef struct oldoffice34
 {
   u32 version;
   u32 encryptedVerifier[4];
   u32 encryptedVerifierHash[5];
+  u32 secondBlockData[8];
+  u32 secondBlockLen;
   u32 rc4key[2];
 
 } oldoffice34_t;
@@ -300,21 +304,21 @@ KERNEL_FQ void m09800_m04 (KERN_ATTR_ESALT (oldoffice34_t))
     w0[1] = salt_buf[1];
     w0[0] = salt_buf[0];
 
-    u32 digest[5];
+    u32 pass_hash[5];
 
-    digest[0] = SHA1M_A;
-    digest[1] = SHA1M_B;
-    digest[2] = SHA1M_C;
-    digest[3] = SHA1M_D;
-    digest[4] = SHA1M_E;
+    pass_hash[0] = SHA1M_A;
+    pass_hash[1] = SHA1M_B;
+    pass_hash[2] = SHA1M_C;
+    pass_hash[3] = SHA1M_D;
+    pass_hash[4] = SHA1M_E;
 
-    sha1_transform (w0, w1, w2, w3, digest);
+    sha1_transform (w0, w1, w2, w3, pass_hash);
 
-    w0[0] = digest[0];
-    w0[1] = digest[1];
-    w0[2] = digest[2];
-    w0[3] = digest[3];
-    w1[0] = digest[4];
+    w0[0] = pass_hash[0];
+    w0[1] = pass_hash[1];
+    w0[2] = pass_hash[2];
+    w0[3] = pass_hash[3];
+    w1[0] = pass_hash[4];
     w1[1] = 0;
     w1[2] = 0x80000000;
     w1[3] = 0;
@@ -327,6 +331,8 @@ KERNEL_FQ void m09800_m04 (KERN_ATTR_ESALT (oldoffice34_t))
     w3[2] = 0;
     w3[3] = (20 + 4) * 8;
 
+    u32 digest[5];
+
     digest[0] = SHA1M_A;
     digest[1] = SHA1M_B;
     digest[2] = SHA1M_C;
@@ -385,7 +391,93 @@ KERNEL_FQ void m09800_m04 (KERN_ATTR_ESALT (oldoffice34_t))
 
     rc4_next_16 (rc4_key, 16, j, digest, out);
 
-    COMPARE_M_SIMD (out[0], out[1], out[2], out[3]);
+    // initial compare
+
+    int digest_pos = find_hash (out, digests_cnt, &digests_buf[digests_offset]);
+
+    if (digest_pos == -1) continue;
+
+    if (esalt_bufs[digests_offset].secondBlockLen != 0)
+    {
+      w0[0] = pass_hash[0];
+      w0[1] = pass_hash[1];
+      w0[2] = pass_hash[2];
+      w0[3] = pass_hash[3];
+      w1[0] = pass_hash[4];
+      w1[1] = 0x01000000;
+      w1[2] = 0x80000000;
+      w1[3] = 0;
+      w2[0] = 0;
+      w2[1] = 0;
+      w2[2] = 0;
+      w2[3] = 0;
+      w3[0] = 0;
+      w3[1] = 0;
+      w3[2] = 0;
+      w3[3] = (20 + 4) * 8;
+
+      digest[0] = SHA1M_A;
+      digest[1] = SHA1M_B;
+      digest[2] = SHA1M_C;
+      digest[3] = SHA1M_D;
+      digest[4] = SHA1M_E;
+
+      sha1_transform (w0, w1, w2, w3, digest);
+
+      digest[0] = hc_swap32_S (digest[0]);
+      digest[1] = hc_swap32_S (digest[1]);
+      digest[2] = 0;
+      digest[3] = 0;
+
+      digest[1] &= 0xff; // only 40-bit key
+
+      // second block decrypt:
+
+      rc4_init_16 (rc4_key, digest);
+
+      u32 secondBlockData[4];
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[0];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[1];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[2];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[3];
+
+      j = rc4_next_16 (rc4_key, 0, 0, secondBlockData, out);
+
+      int null_bytes = 0;
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[4];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[5];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[6];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[7];
+
+      rc4_next_16 (rc4_key, 16, j, secondBlockData, out);
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      if (null_bytes < MIN_NULL_BYTES) continue;
+    }
+
+    const u32 final_hash_pos = digests_offset + digest_pos;
+
+    if (atomic_inc (&hashes_shown[final_hash_pos]) == 0)
+    {
+      mark_hash (plains_buf, d_return_buf, salt_pos, digests_cnt, digest_pos, final_hash_pos, gid, il_pos, 0, 0);
+    }
   }
 }
 
@@ -562,21 +654,21 @@ KERNEL_FQ void m09800_s04 (KERN_ATTR_ESALT (oldoffice34_t))
     w0[1] = salt_buf[1];
     w0[0] = salt_buf[0];
 
-    u32 digest[5];
+    u32 pass_hash[5];
 
-    digest[0] = SHA1M_A;
-    digest[1] = SHA1M_B;
-    digest[2] = SHA1M_C;
-    digest[3] = SHA1M_D;
-    digest[4] = SHA1M_E;
+    pass_hash[0] = SHA1M_A;
+    pass_hash[1] = SHA1M_B;
+    pass_hash[2] = SHA1M_C;
+    pass_hash[3] = SHA1M_D;
+    pass_hash[4] = SHA1M_E;
 
-    sha1_transform (w0, w1, w2, w3, digest);
+    sha1_transform (w0, w1, w2, w3, pass_hash);
 
-    w0[0] = digest[0];
-    w0[1] = digest[1];
-    w0[2] = digest[2];
-    w0[3] = digest[3];
-    w1[0] = digest[4];
+    w0[0] = pass_hash[0];
+    w0[1] = pass_hash[1];
+    w0[2] = pass_hash[2];
+    w0[3] = pass_hash[3];
+    w1[0] = pass_hash[4];
     w1[1] = 0;
     w1[2] = 0x80000000;
     w1[3] = 0;
@@ -589,6 +681,8 @@ KERNEL_FQ void m09800_s04 (KERN_ATTR_ESALT (oldoffice34_t))
     w3[2] = 0;
     w3[3] = (20 + 4) * 8;
 
+    u32 digest[5];
+
     digest[0] = SHA1M_A;
     digest[1] = SHA1M_B;
     digest[2] = SHA1M_C;
@@ -647,7 +741,92 @@ KERNEL_FQ void m09800_s04 (KERN_ATTR_ESALT (oldoffice34_t))
 
     rc4_next_16 (rc4_key, 16, j, digest, out);
 
-    COMPARE_S_SIMD (out[0], out[1], out[2], out[3]);
+    // initial compare
+
+    if (out[0] != search[0]) continue;
+    if (out[1] != search[1]) continue;
+    if (out[2] != search[2]) continue;
+    if (out[3] != search[3]) continue;
+
+    if (esalt_bufs[digests_offset].secondBlockLen != 0)
+    {
+      w0[0] = pass_hash[0];
+      w0[1] = pass_hash[1];
+      w0[2] = pass_hash[2];
+      w0[3] = pass_hash[3];
+      w1[0] = pass_hash[4];
+      w1[1] = 0x01000000;
+      w1[2] = 0x80000000;
+      w1[3] = 0;
+      w2[0] = 0;
+      w2[1] = 0;
+      w2[2] = 0;
+      w2[3] = 0;
+      w3[0] = 0;
+      w3[1] = 0;
+      w3[2] = 0;
+      w3[3] = (20 + 4) * 8;
+
+      digest[0] = SHA1M_A;
+      digest[1] = SHA1M_B;
+      digest[2] = SHA1M_C;
+      digest[3] = SHA1M_D;
+      digest[4] = SHA1M_E;
+
+      sha1_transform (w0, w1, w2, w3, digest);
+
+      digest[0] = hc_swap32_S (digest[0]);
+      digest[1] = hc_swap32_S (digest[1]);
+      digest[2] = 0;
+      digest[3] = 0;
+
+      digest[1] &= 0xff; // only 40-bit key
+
+      // second block decrypt:
+
+      rc4_init_16 (rc4_key, digest);
+
+      u32 secondBlockData[4];
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[0];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[1];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[2];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[3];
+
+      j = rc4_next_16 (rc4_key, 0, 0, secondBlockData, out);
+
+      int null_bytes = 0;
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[4];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[5];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[6];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[7];
+
+      rc4_next_16 (rc4_key, 16, j, secondBlockData, out);
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      if (null_bytes < MIN_NULL_BYTES) continue;
+    }
+
+    if (atomic_inc (&hashes_shown[digests_offset]) == 0)
+    {
+      mark_hash (plains_buf, d_return_buf, salt_pos, digests_cnt, 0, digests_offset + 0, gid, il_pos, 0, 0);
+    }
   }
 }
 
diff --git a/OpenCL/m09800_a3-optimized.cl b/OpenCL/m09800_a3-optimized.cl
index 303b177a8..8315abfdf 100644
--- a/OpenCL/m09800_a3-optimized.cl
+++ b/OpenCL/m09800_a3-optimized.cl
@@ -12,11 +12,15 @@
 #include "inc_hash_sha1.cl"
 #endif
 
+#define MIN_NULL_BYTES 10
+
 typedef struct oldoffice34
 {
   u32 version;
   u32 encryptedVerifier[4];
   u32 encryptedVerifierHash[5];
+  u32 secondBlockData[8];
+  u32 secondBlockLen;
   u32 rc4key[2];
 
 } oldoffice34_t;
@@ -223,21 +227,21 @@ DECLSPEC void m09800m (LOCAL_AS RC4_KEY *rc4_keys, u32 *w0, u32 *w1, u32 *w2, u3
     w3_t[2] = 0;
     w3_t[3] = pw_salt_len * 8;
 
-    u32 digest[5];
+    u32 pass_hash[5];
 
-    digest[0] = SHA1M_A;
-    digest[1] = SHA1M_B;
-    digest[2] = SHA1M_C;
-    digest[3] = SHA1M_D;
-    digest[4] = SHA1M_E;
+    pass_hash[0] = SHA1M_A;
+    pass_hash[1] = SHA1M_B;
+    pass_hash[2] = SHA1M_C;
+    pass_hash[3] = SHA1M_D;
+    pass_hash[4] = SHA1M_E;
 
-    sha1_transform (w0_t, w1_t, w2_t, w3_t, digest);
+    sha1_transform (w0_t, w1_t, w2_t, w3_t, pass_hash);
 
-    w0_t[0] = digest[0];
-    w0_t[1] = digest[1];
-    w0_t[2] = digest[2];
-    w0_t[3] = digest[3];
-    w1_t[0] = digest[4];
+    w0_t[0] = pass_hash[0];
+    w0_t[1] = pass_hash[1];
+    w0_t[2] = pass_hash[2];
+    w0_t[3] = pass_hash[3];
+    w1_t[0] = pass_hash[4];
     w1_t[1] = 0;
     w1_t[2] = 0x80000000;
     w1_t[3] = 0;
@@ -250,6 +254,8 @@ DECLSPEC void m09800m (LOCAL_AS RC4_KEY *rc4_keys, u32 *w0, u32 *w1, u32 *w2, u3
     w3_t[2] = 0;
     w3_t[3] = (20 + 4) * 8;
 
+    u32 digest[5];
+
     digest[0] = SHA1M_A;
     digest[1] = SHA1M_B;
     digest[2] = SHA1M_C;
@@ -308,7 +314,93 @@ DECLSPEC void m09800m (LOCAL_AS RC4_KEY *rc4_keys, u32 *w0, u32 *w1, u32 *w2, u3
 
     rc4_next_16 (rc4_key, 16, j, digest, out);
 
-    COMPARE_M_SIMD (out[0], out[1], out[2], out[3]);
+    // initial compare
+
+    int digest_pos = find_hash (out, digests_cnt, &digests_buf[digests_offset]);
+
+    if (digest_pos == -1) continue;
+
+    if (esalt_bufs[digests_offset].secondBlockLen != 0)
+    {
+      w0[0] = pass_hash[0];
+      w0[1] = pass_hash[1];
+      w0[2] = pass_hash[2];
+      w0[3] = pass_hash[3];
+      w1[0] = pass_hash[4];
+      w1[1] = 0x01000000;
+      w1[2] = 0x80000000;
+      w1[3] = 0;
+      w2[0] = 0;
+      w2[1] = 0;
+      w2[2] = 0;
+      w2[3] = 0;
+      w3[0] = 0;
+      w3[1] = 0;
+      w3[2] = 0;
+      w3[3] = (20 + 4) * 8;
+
+      digest[0] = SHA1M_A;
+      digest[1] = SHA1M_B;
+      digest[2] = SHA1M_C;
+      digest[3] = SHA1M_D;
+      digest[4] = SHA1M_E;
+
+      sha1_transform (w0, w1, w2, w3, digest);
+
+      digest[0] = hc_swap32_S (digest[0]);
+      digest[1] = hc_swap32_S (digest[1]);
+      digest[2] = 0;
+      digest[3] = 0;
+
+      digest[1] &= 0xff; // only 40-bit key
+
+      // second block decrypt:
+
+      rc4_init_16 (rc4_key, digest);
+
+      u32 secondBlockData[4];
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[0];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[1];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[2];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[3];
+
+      j = rc4_next_16 (rc4_key, 0, 0, secondBlockData, out);
+
+      int null_bytes = 0;
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[4];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[5];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[6];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[7];
+
+      rc4_next_16 (rc4_key, 16, j, secondBlockData, out);
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      if (null_bytes < MIN_NULL_BYTES) continue;
+    }
+
+    const u32 final_hash_pos = digests_offset + digest_pos;
+
+    if (atomic_inc (&hashes_shown[final_hash_pos]) == 0)
+    {
+      mark_hash (plains_buf, d_return_buf, salt_pos, digests_cnt, digest_pos, final_hash_pos, gid, il_pos, 0, 0);
+    }
   }
 }
 
@@ -403,21 +495,21 @@ DECLSPEC void m09800s (LOCAL_AS RC4_KEY *rc4_keys, u32 *w0, u32 *w1, u32 *w2, u3
     w3_t[2] = 0;
     w3_t[3] = pw_salt_len * 8;
 
-    u32 digest[5];
+    u32 pass_hash[5];
 
-    digest[0] = SHA1M_A;
-    digest[1] = SHA1M_B;
-    digest[2] = SHA1M_C;
-    digest[3] = SHA1M_D;
-    digest[4] = SHA1M_E;
+    pass_hash[0] = SHA1M_A;
+    pass_hash[1] = SHA1M_B;
+    pass_hash[2] = SHA1M_C;
+    pass_hash[3] = SHA1M_D;
+    pass_hash[4] = SHA1M_E;
 
-    sha1_transform (w0_t, w1_t, w2_t, w3_t, digest);
+    sha1_transform (w0_t, w1_t, w2_t, w3_t, pass_hash);
 
-    w0_t[0] = digest[0];
-    w0_t[1] = digest[1];
-    w0_t[2] = digest[2];
-    w0_t[3] = digest[3];
-    w1_t[0] = digest[4];
+    w0_t[0] = pass_hash[0];
+    w0_t[1] = pass_hash[1];
+    w0_t[2] = pass_hash[2];
+    w0_t[3] = pass_hash[3];
+    w1_t[0] = pass_hash[4];
     w1_t[1] = 0;
     w1_t[2] = 0x80000000;
     w1_t[3] = 0;
@@ -430,6 +522,8 @@ DECLSPEC void m09800s (LOCAL_AS RC4_KEY *rc4_keys, u32 *w0, u32 *w1, u32 *w2, u3
     w3_t[2] = 0;
     w3_t[3] = (20 + 4) * 8;
 
+    u32 digest[5];
+
     digest[0] = SHA1M_A;
     digest[1] = SHA1M_B;
     digest[2] = SHA1M_C;
@@ -488,7 +582,92 @@ DECLSPEC void m09800s (LOCAL_AS RC4_KEY *rc4_keys, u32 *w0, u32 *w1, u32 *w2, u3
 
     rc4_next_16 (rc4_key, 16, j, digest, out);
 
-    COMPARE_S_SIMD (out[0], out[1], out[2], out[3]);
+    // initial compare
+
+    if (out[0] != search[0]) continue;
+    if (out[1] != search[1]) continue;
+    if (out[2] != search[2]) continue;
+    if (out[3] != search[3]) continue;
+
+    if (esalt_bufs[digests_offset].secondBlockLen != 0)
+    {
+      w0[0] = pass_hash[0];
+      w0[1] = pass_hash[1];
+      w0[2] = pass_hash[2];
+      w0[3] = pass_hash[3];
+      w1[0] = pass_hash[4];
+      w1[1] = 0x01000000;
+      w1[2] = 0x80000000;
+      w1[3] = 0;
+      w2[0] = 0;
+      w2[1] = 0;
+      w2[2] = 0;
+      w2[3] = 0;
+      w3[0] = 0;
+      w3[1] = 0;
+      w3[2] = 0;
+      w3[3] = (20 + 4) * 8;
+
+      digest[0] = SHA1M_A;
+      digest[1] = SHA1M_B;
+      digest[2] = SHA1M_C;
+      digest[3] = SHA1M_D;
+      digest[4] = SHA1M_E;
+
+      sha1_transform (w0, w1, w2, w3, digest);
+
+      digest[0] = hc_swap32_S (digest[0]);
+      digest[1] = hc_swap32_S (digest[1]);
+      digest[2] = 0;
+      digest[3] = 0;
+
+      digest[1] &= 0xff; // only 40-bit key
+
+      // second block decrypt:
+
+      rc4_init_16 (rc4_key, digest);
+
+      u32 secondBlockData[4];
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[0];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[1];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[2];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[3];
+
+      j = rc4_next_16 (rc4_key, 0, 0, secondBlockData, out);
+
+      int null_bytes = 0;
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[4];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[5];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[6];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[7];
+
+      rc4_next_16 (rc4_key, 16, j, secondBlockData, out);
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      if (null_bytes < MIN_NULL_BYTES) continue;
+    }
+
+    if (atomic_inc (&hashes_shown[digests_offset]) == 0)
+    {
+      mark_hash (plains_buf, d_return_buf, salt_pos, digests_cnt, 0, digests_offset + 0, gid, il_pos, 0, 0);
+    }
   }
 }
 
diff --git a/OpenCL/m09810_a0-optimized.cl b/OpenCL/m09810_a0-optimized.cl
index 5db2264a6..3b911251c 100644
--- a/OpenCL/m09810_a0-optimized.cl
+++ b/OpenCL/m09810_a0-optimized.cl
@@ -22,6 +22,8 @@ typedef struct oldoffice34
   u32 version;
   u32 encryptedVerifier[4];
   u32 encryptedVerifierHash[5];
+  u32 secondBlockData[8];
+  u32 secondBlockLen;
   u32 rc4key[2];
 
 } oldoffice34_t;
diff --git a/OpenCL/m09810_a1-optimized.cl b/OpenCL/m09810_a1-optimized.cl
index 69ecab5c3..b488cdf49 100644
--- a/OpenCL/m09810_a1-optimized.cl
+++ b/OpenCL/m09810_a1-optimized.cl
@@ -20,6 +20,8 @@ typedef struct oldoffice34
   u32 version;
   u32 encryptedVerifier[4];
   u32 encryptedVerifierHash[5];
+  u32 secondBlockData[8];
+  u32 secondBlockLen;
   u32 rc4key[2];
 
 } oldoffice34_t;
diff --git a/OpenCL/m09810_a3-optimized.cl b/OpenCL/m09810_a3-optimized.cl
index 495adc734..760dcb932 100644
--- a/OpenCL/m09810_a3-optimized.cl
+++ b/OpenCL/m09810_a3-optimized.cl
@@ -20,6 +20,8 @@ typedef struct oldoffice34
   u32 version;
   u32 encryptedVerifier[4];
   u32 encryptedVerifierHash[5];
+  u32 secondBlockData[8];
+  u32 secondBlockLen;
   u32 rc4key[2];
 
 } oldoffice34_t;
diff --git a/OpenCL/m09820_a0-optimized.cl b/OpenCL/m09820_a0-optimized.cl
index 0e9a95ca6..3f4bfeb2b 100644
--- a/OpenCL/m09820_a0-optimized.cl
+++ b/OpenCL/m09820_a0-optimized.cl
@@ -3,7 +3,8 @@
  * License.....: MIT
  */
 
-#define NEW_SIMD_CODE
+//too much register pressure
+//#define NEW_SIMD_CODE
 
 #ifdef KERNEL_STATIC
 #include "inc_vendor.h"
@@ -16,15 +17,142 @@
 #include "inc_hash_sha1.cl"
 #endif
 
+#define MIN_NULL_BYTES 10
+
 typedef struct oldoffice34
 {
   u32 version;
   u32 encryptedVerifier[4];
   u32 encryptedVerifierHash[5];
+  u32 secondBlockData[8];
+  u32 secondBlockLen;
   u32 rc4key[2];
 
 } oldoffice34_t;
 
+typedef struct
+{
+  u8 S[256];
+
+  u32 wtf_its_faster;
+
+} RC4_KEY;
+
+DECLSPEC void swap (LOCAL_AS RC4_KEY *rc4_key, const u8 i, const u8 j)
+{
+  u8 tmp;
+
+  tmp           = rc4_key->S[i];
+  rc4_key->S[i] = rc4_key->S[j];
+  rc4_key->S[j] = tmp;
+}
+
+DECLSPEC void rc4_init_16 (LOCAL_AS RC4_KEY *rc4_key, const u32 *data)
+{
+  u32 v = 0x03020100;
+  u32 a = 0x04040404;
+
+  LOCAL_AS u32 *ptr = (LOCAL_AS u32 *) rc4_key->S;
+
+  #ifdef _unroll
+  #pragma unroll
+  #endif
+  for (u32 i = 0; i < 64; i++)
+  {
+    *ptr++ = v; v += a;
+  }
+
+  u32 j = 0;
+
+  for (u32 i = 0; i < 16; i++)
+  {
+    u32 idx = i * 16;
+
+    u32 v;
+
+    v = data[0];
+
+    j += rc4_key->S[idx] + (v >>  0); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >>  8); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 16); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 24); swap (rc4_key, idx, j); idx++;
+
+    v = data[1];
+
+    j += rc4_key->S[idx] + (v >>  0); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >>  8); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 16); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 24); swap (rc4_key, idx, j); idx++;
+
+    v = data[2];
+
+    j += rc4_key->S[idx] + (v >>  0); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >>  8); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 16); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 24); swap (rc4_key, idx, j); idx++;
+
+    v = data[3];
+
+    j += rc4_key->S[idx] + (v >>  0); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >>  8); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 16); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 24); swap (rc4_key, idx, j); idx++;
+  }
+}
+
+DECLSPEC u8 rc4_next_16 (LOCAL_AS RC4_KEY *rc4_key, u8 i, u8 j, const u32 *in, u32 *out)
+{
+  #ifdef _unroll
+  #pragma unroll
+  #endif
+  for (u32 k = 0; k < 4; k++)
+  {
+    u32 xor4 = 0;
+
+    u8 idx;
+
+    i += 1;
+    j += rc4_key->S[i];
+
+    swap (rc4_key, i, j);
+
+    idx = rc4_key->S[i] + rc4_key->S[j];
+
+    xor4 |= rc4_key->S[idx] <<  0;
+
+    i += 1;
+    j += rc4_key->S[i];
+
+    swap (rc4_key, i, j);
+
+    idx = rc4_key->S[i] + rc4_key->S[j];
+
+    xor4 |= rc4_key->S[idx] <<  8;
+
+    i += 1;
+    j += rc4_key->S[i];
+
+    swap (rc4_key, i, j);
+
+    idx = rc4_key->S[i] + rc4_key->S[j];
+
+    xor4 |= rc4_key->S[idx] << 16;
+
+    i += 1;
+    j += rc4_key->S[i];
+
+    swap (rc4_key, i, j);
+
+    idx = rc4_key->S[i] + rc4_key->S[j];
+
+    xor4 |= rc4_key->S[idx] << 24;
+
+    out[k] = in[k] ^ xor4;
+  }
+
+  return j;
+}
+
 KERNEL_FQ void m09820_m04 (KERN_ATTR_RULES_ESALT (oldoffice34_t))
 {
   /**
@@ -55,6 +183,14 @@ KERNEL_FQ void m09820_m04 (KERN_ATTR_RULES_ESALT (oldoffice34_t))
 
   const u32 pw_len = pws[gid].pw_len & 63;
 
+  /**
+   * shared
+   */
+
+  LOCAL_VK RC4_KEY rc4_keys[64];
+
+  LOCAL_AS RC4_KEY *rc4_key = &rc4_keys[lid];
+
   /**
    * salt
    */
@@ -107,21 +243,21 @@ KERNEL_FQ void m09820_m04 (KERN_ATTR_RULES_ESALT (oldoffice34_t))
     w0[1] = salt_buf[1];
     w0[0] = salt_buf[0];
 
-    u32x digest[5];
+    u32 pass_hash[5];
 
-    digest[0] = SHA1M_A;
-    digest[1] = SHA1M_B;
-    digest[2] = SHA1M_C;
-    digest[3] = SHA1M_D;
-    digest[4] = SHA1M_E;
+    pass_hash[0] = SHA1M_A;
+    pass_hash[1] = SHA1M_B;
+    pass_hash[2] = SHA1M_C;
+    pass_hash[3] = SHA1M_D;
+    pass_hash[4] = SHA1M_E;
 
-    sha1_transform_vector (w0, w1, w2, w3, digest);
+    sha1_transform (w0, w1, w2, w3, pass_hash);
 
-    w0[0] = digest[0];
-    w0[1] = digest[1];
-    w0[2] = digest[2];
-    w0[3] = digest[3];
-    w1[0] = digest[4];
+    w0[0] = pass_hash[0];
+    w0[1] = pass_hash[1];
+    w0[2] = pass_hash[2];
+    w0[3] = pass_hash[3];
+    w1[0] = pass_hash[4];
     w1[1] = 0;
     w1[2] = 0x80000000;
     w1[3] = 0;
@@ -134,20 +270,110 @@ KERNEL_FQ void m09820_m04 (KERN_ATTR_RULES_ESALT (oldoffice34_t))
     w3[2] = 0;
     w3[3] = (20 + 4) * 8;
 
+    u32 digest[5];
+
     digest[0] = SHA1M_A;
     digest[1] = SHA1M_B;
     digest[2] = SHA1M_C;
     digest[3] = SHA1M_D;
     digest[4] = SHA1M_E;
 
-    sha1_transform_vector (w0, w1, w2, w3, digest);
+    sha1_transform (w0, w1, w2, w3, digest);
 
     digest[0] = hc_swap32 (digest[0]);
     digest[1] = hc_swap32 (digest[1]) & 0xff;
     digest[2] = 0;
     digest[3] = 0;
 
-    COMPARE_M_SIMD (digest[0], digest[1], digest[2], digest[3]);
+    // initial compare
+
+    int digest_pos = find_hash (digest, digests_cnt, &digests_buf[digests_offset]);
+
+    if (digest_pos == -1) continue;
+
+    if (esalt_bufs[digests_offset].secondBlockLen != 0)
+    {
+      w0[0] = pass_hash[0];
+      w0[1] = pass_hash[1];
+      w0[2] = pass_hash[2];
+      w0[3] = pass_hash[3];
+      w1[0] = pass_hash[4];
+      w1[1] = 0x01000000;
+      w1[2] = 0x80000000;
+      w1[3] = 0;
+      w2[0] = 0;
+      w2[1] = 0;
+      w2[2] = 0;
+      w2[3] = 0;
+      w3[0] = 0;
+      w3[1] = 0;
+      w3[2] = 0;
+      w3[3] = (20 + 4) * 8;
+
+      digest[0] = SHA1M_A;
+      digest[1] = SHA1M_B;
+      digest[2] = SHA1M_C;
+      digest[3] = SHA1M_D;
+      digest[4] = SHA1M_E;
+
+      sha1_transform (w0, w1, w2, w3, digest);
+
+      digest[0] = hc_swap32_S (digest[0]);
+      digest[1] = hc_swap32_S (digest[1]);
+      digest[2] = 0;
+      digest[3] = 0;
+
+      digest[1] &= 0xff; // only 40-bit key
+
+      // second block decrypt:
+
+      rc4_init_16 (rc4_key, digest);
+
+      u32 secondBlockData[4];
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[0];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[1];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[2];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[3];
+
+      u32 out[4];
+
+      u32 j = rc4_next_16 (rc4_key, 0, 0, secondBlockData, out);
+
+      int null_bytes = 0;
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[4];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[5];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[6];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[7];
+
+      rc4_next_16 (rc4_key, 16, j, secondBlockData, out);
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      if (null_bytes < MIN_NULL_BYTES) continue;
+    }
+
+    const u32 final_hash_pos = digests_offset + digest_pos;
+
+    if (atomic_inc (&hashes_shown[final_hash_pos]) == 0)
+    {
+      mark_hash (plains_buf, d_return_buf, salt_pos, digests_cnt, digest_pos, final_hash_pos, gid, il_pos, 0, 0);
+    }
   }
 }
 
@@ -189,6 +415,14 @@ KERNEL_FQ void m09820_s04 (KERN_ATTR_RULES_ESALT (oldoffice34_t))
 
   const u32 pw_len = pws[gid].pw_len & 63;
 
+  /**
+   * shared
+   */
+
+  LOCAL_VK RC4_KEY rc4_keys[64];
+
+  LOCAL_AS RC4_KEY *rc4_key = &rc4_keys[lid];
+
   /**
    * salt
    */
@@ -253,21 +487,21 @@ KERNEL_FQ void m09820_s04 (KERN_ATTR_RULES_ESALT (oldoffice34_t))
     w0[1] = salt_buf[1];
     w0[0] = salt_buf[0];
 
-    u32x digest[5];
+    u32 pass_hash[5];
 
-    digest[0] = SHA1M_A;
-    digest[1] = SHA1M_B;
-    digest[2] = SHA1M_C;
-    digest[3] = SHA1M_D;
-    digest[4] = SHA1M_E;
+    pass_hash[0] = SHA1M_A;
+    pass_hash[1] = SHA1M_B;
+    pass_hash[2] = SHA1M_C;
+    pass_hash[3] = SHA1M_D;
+    pass_hash[4] = SHA1M_E;
 
-    sha1_transform_vector (w0, w1, w2, w3, digest);
+    sha1_transform (w0, w1, w2, w3, pass_hash);
 
-    w0[0] = digest[0];
-    w0[1] = digest[1];
-    w0[2] = digest[2];
-    w0[3] = digest[3];
-    w1[0] = digest[4];
+    w0[0] = pass_hash[0];
+    w0[1] = pass_hash[1];
+    w0[2] = pass_hash[2];
+    w0[3] = pass_hash[3];
+    w1[0] = pass_hash[4];
     w1[1] = 0;
     w1[2] = 0x80000000;
     w1[3] = 0;
@@ -280,20 +514,107 @@ KERNEL_FQ void m09820_s04 (KERN_ATTR_RULES_ESALT (oldoffice34_t))
     w3[2] = 0;
     w3[3] = (20 + 4) * 8;
 
+    u32 digest[5];
+
     digest[0] = SHA1M_A;
     digest[1] = SHA1M_B;
     digest[2] = SHA1M_C;
     digest[3] = SHA1M_D;
     digest[4] = SHA1M_E;
 
-    sha1_transform_vector (w0, w1, w2, w3, digest);
+    sha1_transform (w0, w1, w2, w3, digest);
 
     digest[0] = hc_swap32 (digest[0]);
     digest[1] = hc_swap32 (digest[1]) & 0xff;
     digest[2] = 0;
     digest[3] = 0;
 
-    COMPARE_S_SIMD (digest[0], digest[1], digest[2], digest[3]);
+    // initial compare
+
+    if (digest[0] != search[0]) continue;
+    if (digest[1] != search[1]) continue;
+
+    if (esalt_bufs[digests_offset].secondBlockLen != 0)
+    {
+      w0[0] = pass_hash[0];
+      w0[1] = pass_hash[1];
+      w0[2] = pass_hash[2];
+      w0[3] = pass_hash[3];
+      w1[0] = pass_hash[4];
+      w1[1] = 0x01000000;
+      w1[2] = 0x80000000;
+      w1[3] = 0;
+      w2[0] = 0;
+      w2[1] = 0;
+      w2[2] = 0;
+      w2[3] = 0;
+      w3[0] = 0;
+      w3[1] = 0;
+      w3[2] = 0;
+      w3[3] = (20 + 4) * 8;
+
+      digest[0] = SHA1M_A;
+      digest[1] = SHA1M_B;
+      digest[2] = SHA1M_C;
+      digest[3] = SHA1M_D;
+      digest[4] = SHA1M_E;
+
+      sha1_transform (w0, w1, w2, w3, digest);
+
+      digest[0] = hc_swap32_S (digest[0]);
+      digest[1] = hc_swap32_S (digest[1]);
+      digest[2] = 0;
+      digest[3] = 0;
+
+      digest[1] &= 0xff; // only 40-bit key
+
+      // second block decrypt:
+
+      rc4_init_16 (rc4_key, digest);
+
+      u32 secondBlockData[4];
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[0];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[1];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[2];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[3];
+
+      u32 out[4];
+
+      u32 j = rc4_next_16 (rc4_key, 0, 0, secondBlockData, out);
+
+      int null_bytes = 0;
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[4];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[5];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[6];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[7];
+
+      rc4_next_16 (rc4_key, 16, j, secondBlockData, out);
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      if (null_bytes < MIN_NULL_BYTES) continue;
+    }
+
+    if (atomic_inc (&hashes_shown[digests_offset]) == 0)
+    {
+      mark_hash (plains_buf, d_return_buf, salt_pos, digests_cnt, 0, digests_offset + 0, gid, il_pos, 0, 0);
+    }
   }
 }
 
diff --git a/OpenCL/m09820_a1-optimized.cl b/OpenCL/m09820_a1-optimized.cl
index 028b3d28f..bedc61bb8 100644
--- a/OpenCL/m09820_a1-optimized.cl
+++ b/OpenCL/m09820_a1-optimized.cl
@@ -3,7 +3,8 @@
  * License.....: MIT
  */
 
-#define NEW_SIMD_CODE
+//too much register pressure
+//#define NEW_SIMD_CODE
 
 #ifdef KERNEL_STATIC
 #include "inc_vendor.h"
@@ -14,15 +15,142 @@
 #include "inc_hash_sha1.cl"
 #endif
 
+#define MIN_NULL_BYTES 10
+
 typedef struct oldoffice34
 {
   u32 version;
   u32 encryptedVerifier[4];
   u32 encryptedVerifierHash[5];
+  u32 secondBlockData[8];
+  u32 secondBlockLen;
   u32 rc4key[2];
 
 } oldoffice34_t;
 
+typedef struct
+{
+  u8 S[256];
+
+  u32 wtf_its_faster;
+
+} RC4_KEY;
+
+DECLSPEC void swap (LOCAL_AS RC4_KEY *rc4_key, const u8 i, const u8 j)
+{
+  u8 tmp;
+
+  tmp           = rc4_key->S[i];
+  rc4_key->S[i] = rc4_key->S[j];
+  rc4_key->S[j] = tmp;
+}
+
+DECLSPEC void rc4_init_16 (LOCAL_AS RC4_KEY *rc4_key, const u32 *data)
+{
+  u32 v = 0x03020100;
+  u32 a = 0x04040404;
+
+  LOCAL_AS u32 *ptr = (LOCAL_AS u32 *) rc4_key->S;
+
+  #ifdef _unroll
+  #pragma unroll
+  #endif
+  for (u32 i = 0; i < 64; i++)
+  {
+    *ptr++ = v; v += a;
+  }
+
+  u32 j = 0;
+
+  for (u32 i = 0; i < 16; i++)
+  {
+    u32 idx = i * 16;
+
+    u32 v;
+
+    v = data[0];
+
+    j += rc4_key->S[idx] + (v >>  0); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >>  8); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 16); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 24); swap (rc4_key, idx, j); idx++;
+
+    v = data[1];
+
+    j += rc4_key->S[idx] + (v >>  0); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >>  8); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 16); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 24); swap (rc4_key, idx, j); idx++;
+
+    v = data[2];
+
+    j += rc4_key->S[idx] + (v >>  0); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >>  8); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 16); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 24); swap (rc4_key, idx, j); idx++;
+
+    v = data[3];
+
+    j += rc4_key->S[idx] + (v >>  0); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >>  8); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 16); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 24); swap (rc4_key, idx, j); idx++;
+  }
+}
+
+DECLSPEC u8 rc4_next_16 (LOCAL_AS RC4_KEY *rc4_key, u8 i, u8 j, const u32 *in, u32 *out)
+{
+  #ifdef _unroll
+  #pragma unroll
+  #endif
+  for (u32 k = 0; k < 4; k++)
+  {
+    u32 xor4 = 0;
+
+    u8 idx;
+
+    i += 1;
+    j += rc4_key->S[i];
+
+    swap (rc4_key, i, j);
+
+    idx = rc4_key->S[i] + rc4_key->S[j];
+
+    xor4 |= rc4_key->S[idx] <<  0;
+
+    i += 1;
+    j += rc4_key->S[i];
+
+    swap (rc4_key, i, j);
+
+    idx = rc4_key->S[i] + rc4_key->S[j];
+
+    xor4 |= rc4_key->S[idx] <<  8;
+
+    i += 1;
+    j += rc4_key->S[i];
+
+    swap (rc4_key, i, j);
+
+    idx = rc4_key->S[i] + rc4_key->S[j];
+
+    xor4 |= rc4_key->S[idx] << 16;
+
+    i += 1;
+    j += rc4_key->S[i];
+
+    swap (rc4_key, i, j);
+
+    idx = rc4_key->S[i] + rc4_key->S[j];
+
+    xor4 |= rc4_key->S[idx] << 24;
+
+    out[k] = in[k] ^ xor4;
+  }
+
+  return j;
+}
+
 KERNEL_FQ void m09820_m04 (KERN_ATTR_ESALT (oldoffice34_t))
 {
   /**
@@ -53,6 +181,14 @@ KERNEL_FQ void m09820_m04 (KERN_ATTR_ESALT (oldoffice34_t))
 
   const u32 pw_l_len = pws[gid].pw_len & 63;
 
+  /**
+   * shared
+   */
+
+  LOCAL_VK RC4_KEY rc4_keys[64];
+
+  LOCAL_AS RC4_KEY *rc4_key = &rc4_keys[lid];
+
   /**
    * salt
    */
@@ -155,21 +291,21 @@ KERNEL_FQ void m09820_m04 (KERN_ATTR_ESALT (oldoffice34_t))
     w0[1] = salt_buf[1];
     w0[0] = salt_buf[0];
 
-    u32x digest[5];
+    u32 pass_hash[5];
 
-    digest[0] = SHA1M_A;
-    digest[1] = SHA1M_B;
-    digest[2] = SHA1M_C;
-    digest[3] = SHA1M_D;
-    digest[4] = SHA1M_E;
+    pass_hash[0] = SHA1M_A;
+    pass_hash[1] = SHA1M_B;
+    pass_hash[2] = SHA1M_C;
+    pass_hash[3] = SHA1M_D;
+    pass_hash[4] = SHA1M_E;
 
-    sha1_transform_vector (w0, w1, w2, w3, digest);
+    sha1_transform (w0, w1, w2, w3, pass_hash);
 
-    w0[0] = digest[0];
-    w0[1] = digest[1];
-    w0[2] = digest[2];
-    w0[3] = digest[3];
-    w1[0] = digest[4];
+    w0[0] = pass_hash[0];
+    w0[1] = pass_hash[1];
+    w0[2] = pass_hash[2];
+    w0[3] = pass_hash[3];
+    w1[0] = pass_hash[4];
     w1[1] = 0;
     w1[2] = 0x80000000;
     w1[3] = 0;
@@ -182,20 +318,110 @@ KERNEL_FQ void m09820_m04 (KERN_ATTR_ESALT (oldoffice34_t))
     w3[2] = 0;
     w3[3] = (20 + 4) * 8;
 
+    u32 digest[5];
+
     digest[0] = SHA1M_A;
     digest[1] = SHA1M_B;
     digest[2] = SHA1M_C;
     digest[3] = SHA1M_D;
     digest[4] = SHA1M_E;
 
-    sha1_transform_vector (w0, w1, w2, w3, digest);
+    sha1_transform (w0, w1, w2, w3, digest);
 
     digest[0] = hc_swap32 (digest[0]);
     digest[1] = hc_swap32 (digest[1]) & 0xff;
     digest[2] = 0;
     digest[3] = 0;
 
-    COMPARE_M_SIMD (digest[0], digest[1], digest[2], digest[3]);
+    // initial compare
+
+    int digest_pos = find_hash (digest, digests_cnt, &digests_buf[digests_offset]);
+
+    if (digest_pos == -1) continue;
+
+    if (esalt_bufs[digests_offset].secondBlockLen != 0)
+    {
+      w0[0] = pass_hash[0];
+      w0[1] = pass_hash[1];
+      w0[2] = pass_hash[2];
+      w0[3] = pass_hash[3];
+      w1[0] = pass_hash[4];
+      w1[1] = 0x01000000;
+      w1[2] = 0x80000000;
+      w1[3] = 0;
+      w2[0] = 0;
+      w2[1] = 0;
+      w2[2] = 0;
+      w2[3] = 0;
+      w3[0] = 0;
+      w3[1] = 0;
+      w3[2] = 0;
+      w3[3] = (20 + 4) * 8;
+
+      digest[0] = SHA1M_A;
+      digest[1] = SHA1M_B;
+      digest[2] = SHA1M_C;
+      digest[3] = SHA1M_D;
+      digest[4] = SHA1M_E;
+
+      sha1_transform (w0, w1, w2, w3, digest);
+
+      digest[0] = hc_swap32_S (digest[0]);
+      digest[1] = hc_swap32_S (digest[1]);
+      digest[2] = 0;
+      digest[3] = 0;
+
+      digest[1] &= 0xff; // only 40-bit key
+
+      // second block decrypt:
+
+      rc4_init_16 (rc4_key, digest);
+
+      u32 secondBlockData[4];
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[0];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[1];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[2];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[3];
+
+      u32 out[4];
+
+      u32 j = rc4_next_16 (rc4_key, 0, 0, secondBlockData, out);
+
+      int null_bytes = 0;
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[4];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[5];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[6];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[7];
+
+      rc4_next_16 (rc4_key, 16, j, secondBlockData, out);
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      if (null_bytes < MIN_NULL_BYTES) continue;
+    }
+
+    const u32 final_hash_pos = digests_offset + digest_pos;
+
+    if (atomic_inc (&hashes_shown[final_hash_pos]) == 0)
+    {
+      mark_hash (plains_buf, d_return_buf, salt_pos, digests_cnt, digest_pos, final_hash_pos, gid, il_pos, 0, 0);
+    }
   }
 }
 
@@ -237,6 +463,14 @@ KERNEL_FQ void m09820_s04 (KERN_ATTR_ESALT (oldoffice34_t))
 
   const u32 pw_l_len = pws[gid].pw_len & 63;
 
+  /**
+   * shared
+   */
+
+  LOCAL_VK RC4_KEY rc4_keys[64];
+
+  LOCAL_AS RC4_KEY *rc4_key = &rc4_keys[lid];
+
   /**
    * salt
    */
@@ -351,21 +585,21 @@ KERNEL_FQ void m09820_s04 (KERN_ATTR_ESALT (oldoffice34_t))
     w0[1] = salt_buf[1];
     w0[0] = salt_buf[0];
 
-    u32x digest[5];
+    u32 pass_hash[5];
 
-    digest[0] = SHA1M_A;
-    digest[1] = SHA1M_B;
-    digest[2] = SHA1M_C;
-    digest[3] = SHA1M_D;
-    digest[4] = SHA1M_E;
+    pass_hash[0] = SHA1M_A;
+    pass_hash[1] = SHA1M_B;
+    pass_hash[2] = SHA1M_C;
+    pass_hash[3] = SHA1M_D;
+    pass_hash[4] = SHA1M_E;
 
-    sha1_transform_vector (w0, w1, w2, w3, digest);
+    sha1_transform (w0, w1, w2, w3, pass_hash);
 
-    w0[0] = digest[0];
-    w0[1] = digest[1];
-    w0[2] = digest[2];
-    w0[3] = digest[3];
-    w1[0] = digest[4];
+    w0[0] = pass_hash[0];
+    w0[1] = pass_hash[1];
+    w0[2] = pass_hash[2];
+    w0[3] = pass_hash[3];
+    w1[0] = pass_hash[4];
     w1[1] = 0;
     w1[2] = 0x80000000;
     w1[3] = 0;
@@ -378,20 +612,107 @@ KERNEL_FQ void m09820_s04 (KERN_ATTR_ESALT (oldoffice34_t))
     w3[2] = 0;
     w3[3] = (20 + 4) * 8;
 
+    u32 digest[5];
+
     digest[0] = SHA1M_A;
     digest[1] = SHA1M_B;
     digest[2] = SHA1M_C;
     digest[3] = SHA1M_D;
     digest[4] = SHA1M_E;
 
-    sha1_transform_vector (w0, w1, w2, w3, digest);
+    sha1_transform (w0, w1, w2, w3, digest);
 
     digest[0] = hc_swap32 (digest[0]);
     digest[1] = hc_swap32 (digest[1]) & 0xff;
     digest[2] = 0;
     digest[3] = 0;
 
-    COMPARE_S_SIMD (digest[0], digest[1], digest[2], digest[3]);
+    // initial compare
+
+    if (digest[0] != search[0]) continue;
+    if (digest[1] != search[1]) continue;
+
+    if (esalt_bufs[digests_offset].secondBlockLen != 0)
+    {
+      w0[0] = pass_hash[0];
+      w0[1] = pass_hash[1];
+      w0[2] = pass_hash[2];
+      w0[3] = pass_hash[3];
+      w1[0] = pass_hash[4];
+      w1[1] = 0x01000000;
+      w1[2] = 0x80000000;
+      w1[3] = 0;
+      w2[0] = 0;
+      w2[1] = 0;
+      w2[2] = 0;
+      w2[3] = 0;
+      w3[0] = 0;
+      w3[1] = 0;
+      w3[2] = 0;
+      w3[3] = (20 + 4) * 8;
+
+      digest[0] = SHA1M_A;
+      digest[1] = SHA1M_B;
+      digest[2] = SHA1M_C;
+      digest[3] = SHA1M_D;
+      digest[4] = SHA1M_E;
+
+      sha1_transform (w0, w1, w2, w3, digest);
+
+      digest[0] = hc_swap32_S (digest[0]);
+      digest[1] = hc_swap32_S (digest[1]);
+      digest[2] = 0;
+      digest[3] = 0;
+
+      digest[1] &= 0xff; // only 40-bit key
+
+      // second block decrypt:
+
+      rc4_init_16 (rc4_key, digest);
+
+      u32 secondBlockData[4];
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[0];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[1];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[2];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[3];
+
+      u32 out[4];
+
+      u32 j = rc4_next_16 (rc4_key, 0, 0, secondBlockData, out);
+
+      int null_bytes = 0;
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[4];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[5];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[6];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[7];
+
+      rc4_next_16 (rc4_key, 16, j, secondBlockData, out);
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      if (null_bytes < MIN_NULL_BYTES) continue;
+    }
+
+    if (atomic_inc (&hashes_shown[digests_offset]) == 0)
+    {
+      mark_hash (plains_buf, d_return_buf, salt_pos, digests_cnt, 0, digests_offset + 0, gid, il_pos, 0, 0);
+    }
   }
 }
 
diff --git a/OpenCL/m09820_a3-optimized.cl b/OpenCL/m09820_a3-optimized.cl
index cde918d0e..a0c0a568d 100644
--- a/OpenCL/m09820_a3-optimized.cl
+++ b/OpenCL/m09820_a3-optimized.cl
@@ -3,7 +3,8 @@
  * License.....: MIT
  */
 
-#define NEW_SIMD_CODE
+//too much register pressure
+//#define NEW_SIMD_CODE
 
 #ifdef KERNEL_STATIC
 #include "inc_vendor.h"
@@ -14,16 +15,143 @@
 #include "inc_hash_sha1.cl"
 #endif
 
+#define MIN_NULL_BYTES 10
+
 typedef struct oldoffice34
 {
   u32 version;
   u32 encryptedVerifier[4];
   u32 encryptedVerifierHash[5];
+  u32 secondBlockData[8];
+  u32 secondBlockLen;
   u32 rc4key[2];
 
 } oldoffice34_t;
 
-DECLSPEC void m09820m (u32 *w0, u32 *w1, u32 *w2, u32 *w3, const u32 pw_len, KERN_ATTR_ESALT (oldoffice34_t))
+typedef struct
+{
+  u8 S[256];
+
+  u32 wtf_its_faster;
+
+} RC4_KEY;
+
+DECLSPEC void swap (LOCAL_AS RC4_KEY *rc4_key, const u8 i, const u8 j)
+{
+  u8 tmp;
+
+  tmp           = rc4_key->S[i];
+  rc4_key->S[i] = rc4_key->S[j];
+  rc4_key->S[j] = tmp;
+}
+
+DECLSPEC void rc4_init_16 (LOCAL_AS RC4_KEY *rc4_key, const u32 *data)
+{
+  u32 v = 0x03020100;
+  u32 a = 0x04040404;
+
+  LOCAL_AS u32 *ptr = (LOCAL_AS u32 *) rc4_key->S;
+
+  #ifdef _unroll
+  #pragma unroll
+  #endif
+  for (u32 i = 0; i < 64; i++)
+  {
+    *ptr++ = v; v += a;
+  }
+
+  u32 j = 0;
+
+  for (u32 i = 0; i < 16; i++)
+  {
+    u32 idx = i * 16;
+
+    u32 v;
+
+    v = data[0];
+
+    j += rc4_key->S[idx] + (v >>  0); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >>  8); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 16); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 24); swap (rc4_key, idx, j); idx++;
+
+    v = data[1];
+
+    j += rc4_key->S[idx] + (v >>  0); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >>  8); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 16); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 24); swap (rc4_key, idx, j); idx++;
+
+    v = data[2];
+
+    j += rc4_key->S[idx] + (v >>  0); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >>  8); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 16); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 24); swap (rc4_key, idx, j); idx++;
+
+    v = data[3];
+
+    j += rc4_key->S[idx] + (v >>  0); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >>  8); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 16); swap (rc4_key, idx, j); idx++;
+    j += rc4_key->S[idx] + (v >> 24); swap (rc4_key, idx, j); idx++;
+  }
+}
+
+DECLSPEC u8 rc4_next_16 (LOCAL_AS RC4_KEY *rc4_key, u8 i, u8 j, const u32 *in, u32 *out)
+{
+  #ifdef _unroll
+  #pragma unroll
+  #endif
+  for (u32 k = 0; k < 4; k++)
+  {
+    u32 xor4 = 0;
+
+    u8 idx;
+
+    i += 1;
+    j += rc4_key->S[i];
+
+    swap (rc4_key, i, j);
+
+    idx = rc4_key->S[i] + rc4_key->S[j];
+
+    xor4 |= rc4_key->S[idx] <<  0;
+
+    i += 1;
+    j += rc4_key->S[i];
+
+    swap (rc4_key, i, j);
+
+    idx = rc4_key->S[i] + rc4_key->S[j];
+
+    xor4 |= rc4_key->S[idx] <<  8;
+
+    i += 1;
+    j += rc4_key->S[i];
+
+    swap (rc4_key, i, j);
+
+    idx = rc4_key->S[i] + rc4_key->S[j];
+
+    xor4 |= rc4_key->S[idx] << 16;
+
+    i += 1;
+    j += rc4_key->S[i];
+
+    swap (rc4_key, i, j);
+
+    idx = rc4_key->S[i] + rc4_key->S[j];
+
+    xor4 |= rc4_key->S[idx] << 24;
+
+    out[k] = in[k] ^ xor4;
+  }
+
+  return j;
+}
+
+DECLSPEC void m09820m (LOCAL_AS RC4_KEY *rc4_keys, u32 *w0, u32 *w1, u32 *w2, u32 *w3, const u32 pw_len, KERN_ATTR_ESALT (oldoffice34_t))
 {
   /**
    * modifier
@@ -32,6 +160,12 @@ DECLSPEC void m09820m (u32 *w0, u32 *w1, u32 *w2, u32 *w3, const u32 pw_len, KER
   const u64 gid = get_global_id (0);
   const u64 lid = get_local_id (0);
 
+  /**
+   * shared
+   */
+
+  LOCAL_AS RC4_KEY *rc4_key = &rc4_keys[lid];
+
   /**
    * salt
    */
@@ -81,21 +215,21 @@ DECLSPEC void m09820m (u32 *w0, u32 *w1, u32 *w2, u32 *w3, const u32 pw_len, KER
     w3_t[2] = 0;
     w3_t[3] = (pw_len + 16) * 8;
 
-    u32x digest[5];
+    u32 pass_hash[5];
 
-    digest[0] = SHA1M_A;
-    digest[1] = SHA1M_B;
-    digest[2] = SHA1M_C;
-    digest[3] = SHA1M_D;
-    digest[4] = SHA1M_E;
+    pass_hash[0] = SHA1M_A;
+    pass_hash[1] = SHA1M_B;
+    pass_hash[2] = SHA1M_C;
+    pass_hash[3] = SHA1M_D;
+    pass_hash[4] = SHA1M_E;
 
-    sha1_transform_vector (w0_t, w1_t, w2_t, w3_t, digest);
+    sha1_transform (w0_t, w1_t, w2_t, w3_t, pass_hash);
 
-    w0_t[0] = digest[0];
-    w0_t[1] = digest[1];
-    w0_t[2] = digest[2];
-    w0_t[3] = digest[3];
-    w1_t[0] = digest[4];
+    w0_t[0] = pass_hash[0];
+    w0_t[1] = pass_hash[1];
+    w0_t[2] = pass_hash[2];
+    w0_t[3] = pass_hash[3];
+    w1_t[0] = pass_hash[4];
     w1_t[1] = 0;
     w1_t[2] = 0x80000000;
     w1_t[3] = 0;
@@ -108,24 +242,114 @@ DECLSPEC void m09820m (u32 *w0, u32 *w1, u32 *w2, u32 *w3, const u32 pw_len, KER
     w3_t[2] = 0;
     w3_t[3] = (20 + 4) * 8;
 
+    u32 digest[5];
+
     digest[0] = SHA1M_A;
     digest[1] = SHA1M_B;
     digest[2] = SHA1M_C;
     digest[3] = SHA1M_D;
     digest[4] = SHA1M_E;
 
-    sha1_transform_vector (w0_t, w1_t, w2_t, w3_t, digest);
+    sha1_transform (w0_t, w1_t, w2_t, w3_t, digest);
 
     digest[0] = hc_swap32 (digest[0]);
     digest[1] = hc_swap32 (digest[1]) & 0xff;
     digest[2] = 0;
     digest[3] = 0;
 
-    COMPARE_M_SIMD (digest[0], digest[1], digest[2], digest[3]);
+    // initial compare
+
+    int digest_pos = find_hash (digest, digests_cnt, &digests_buf[digests_offset]);
+
+    if (digest_pos == -1) continue;
+
+    if (esalt_bufs[digests_offset].secondBlockLen != 0)
+    {
+      w0[0] = pass_hash[0];
+      w0[1] = pass_hash[1];
+      w0[2] = pass_hash[2];
+      w0[3] = pass_hash[3];
+      w1[0] = pass_hash[4];
+      w1[1] = 0x01000000;
+      w1[2] = 0x80000000;
+      w1[3] = 0;
+      w2[0] = 0;
+      w2[1] = 0;
+      w2[2] = 0;
+      w2[3] = 0;
+      w3[0] = 0;
+      w3[1] = 0;
+      w3[2] = 0;
+      w3[3] = (20 + 4) * 8;
+
+      digest[0] = SHA1M_A;
+      digest[1] = SHA1M_B;
+      digest[2] = SHA1M_C;
+      digest[3] = SHA1M_D;
+      digest[4] = SHA1M_E;
+
+      sha1_transform (w0, w1, w2, w3, digest);
+
+      digest[0] = hc_swap32_S (digest[0]);
+      digest[1] = hc_swap32_S (digest[1]);
+      digest[2] = 0;
+      digest[3] = 0;
+
+      digest[1] &= 0xff; // only 40-bit key
+
+      // second block decrypt:
+
+      rc4_init_16 (rc4_key, digest);
+
+      u32 secondBlockData[4];
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[0];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[1];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[2];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[3];
+
+      u32 out[4];
+
+      u32 j = rc4_next_16 (rc4_key, 0, 0, secondBlockData, out);
+
+      int null_bytes = 0;
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[4];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[5];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[6];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[7];
+
+      rc4_next_16 (rc4_key, 16, j, secondBlockData, out);
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      if (null_bytes < MIN_NULL_BYTES) continue;
+    }
+
+    const u32 final_hash_pos = digests_offset + digest_pos;
+
+    if (atomic_inc (&hashes_shown[final_hash_pos]) == 0)
+    {
+      mark_hash (plains_buf, d_return_buf, salt_pos, digests_cnt, digest_pos, final_hash_pos, gid, il_pos, 0, 0);
+    }
   }
 }
 
-DECLSPEC void m09820s (u32 *w0, u32 *w1, u32 *w2, u32 *w3, const u32 pw_len, KERN_ATTR_ESALT (oldoffice34_t))
+DECLSPEC void m09820s (LOCAL_AS RC4_KEY *rc4_keys, u32 *w0, u32 *w1, u32 *w2, u32 *w3, const u32 pw_len, KERN_ATTR_ESALT (oldoffice34_t))
 {
   /**
    * modifier
@@ -134,6 +358,12 @@ DECLSPEC void m09820s (u32 *w0, u32 *w1, u32 *w2, u32 *w3, const u32 pw_len, KER
   const u64 gid = get_global_id (0);
   const u64 lid = get_local_id (0);
 
+  /**
+   * shared
+   */
+
+  LOCAL_AS RC4_KEY *rc4_key = &rc4_keys[lid];
+
   /**
    * salt
    */
@@ -195,21 +425,21 @@ DECLSPEC void m09820s (u32 *w0, u32 *w1, u32 *w2, u32 *w3, const u32 pw_len, KER
     w3_t[2] = 0;
     w3_t[3] = (pw_len + 16) * 8;
 
-    u32x digest[5];
+    u32 pass_hash[5];
 
-    digest[0] = SHA1M_A;
-    digest[1] = SHA1M_B;
-    digest[2] = SHA1M_C;
-    digest[3] = SHA1M_D;
-    digest[4] = SHA1M_E;
+    pass_hash[0] = SHA1M_A;
+    pass_hash[1] = SHA1M_B;
+    pass_hash[2] = SHA1M_C;
+    pass_hash[3] = SHA1M_D;
+    pass_hash[4] = SHA1M_E;
 
-    sha1_transform_vector (w0_t, w1_t, w2_t, w3_t, digest);
+    sha1_transform (w0_t, w1_t, w2_t, w3_t, pass_hash);
 
-    w0_t[0] = digest[0];
-    w0_t[1] = digest[1];
-    w0_t[2] = digest[2];
-    w0_t[3] = digest[3];
-    w1_t[0] = digest[4];
+    w0_t[0] = pass_hash[0];
+    w0_t[1] = pass_hash[1];
+    w0_t[2] = pass_hash[2];
+    w0_t[3] = pass_hash[3];
+    w1_t[0] = pass_hash[4];
     w1_t[1] = 0;
     w1_t[2] = 0x80000000;
     w1_t[3] = 0;
@@ -222,20 +452,107 @@ DECLSPEC void m09820s (u32 *w0, u32 *w1, u32 *w2, u32 *w3, const u32 pw_len, KER
     w3_t[2] = 0;
     w3_t[3] = (20 + 4) * 8;
 
+    u32 digest[5];
+
     digest[0] = SHA1M_A;
     digest[1] = SHA1M_B;
     digest[2] = SHA1M_C;
     digest[3] = SHA1M_D;
     digest[4] = SHA1M_E;
 
-    sha1_transform_vector (w0_t, w1_t, w2_t, w3_t, digest);
+    sha1_transform (w0_t, w1_t, w2_t, w3_t, digest);
 
     digest[0] = hc_swap32 (digest[0]);
     digest[1] = hc_swap32 (digest[1]) & 0xff;
     digest[2] = 0;
     digest[3] = 0;
 
-    COMPARE_S_SIMD (digest[0], digest[1], digest[2], digest[3]);
+    // initial compare
+
+    if (digest[0] != search[0]) continue;
+    if (digest[1] != search[1]) continue;
+
+    if (esalt_bufs[digests_offset].secondBlockLen != 0)
+    {
+      w0[0] = pass_hash[0];
+      w0[1] = pass_hash[1];
+      w0[2] = pass_hash[2];
+      w0[3] = pass_hash[3];
+      w1[0] = pass_hash[4];
+      w1[1] = 0x01000000;
+      w1[2] = 0x80000000;
+      w1[3] = 0;
+      w2[0] = 0;
+      w2[1] = 0;
+      w2[2] = 0;
+      w2[3] = 0;
+      w3[0] = 0;
+      w3[1] = 0;
+      w3[2] = 0;
+      w3[3] = (20 + 4) * 8;
+
+      digest[0] = SHA1M_A;
+      digest[1] = SHA1M_B;
+      digest[2] = SHA1M_C;
+      digest[3] = SHA1M_D;
+      digest[4] = SHA1M_E;
+
+      sha1_transform (w0, w1, w2, w3, digest);
+
+      digest[0] = hc_swap32_S (digest[0]);
+      digest[1] = hc_swap32_S (digest[1]);
+      digest[2] = 0;
+      digest[3] = 0;
+
+      digest[1] &= 0xff; // only 40-bit key
+
+      // second block decrypt:
+
+      rc4_init_16 (rc4_key, digest);
+
+      u32 secondBlockData[4];
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[0];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[1];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[2];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[3];
+
+      u32 out[4];
+
+      u32 j = rc4_next_16 (rc4_key, 0, 0, secondBlockData, out);
+
+      int null_bytes = 0;
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      secondBlockData[0] = esalt_bufs[digests_offset].secondBlockData[4];
+      secondBlockData[1] = esalt_bufs[digests_offset].secondBlockData[5];
+      secondBlockData[2] = esalt_bufs[digests_offset].secondBlockData[6];
+      secondBlockData[3] = esalt_bufs[digests_offset].secondBlockData[7];
+
+      rc4_next_16 (rc4_key, 16, j, secondBlockData, out);
+
+      for (int k = 0; k < 4; k++)
+      {
+        if ((out[k] & 0x000000ff) == 0) null_bytes++;
+        if ((out[k] & 0x0000ff00) == 0) null_bytes++;
+        if ((out[k] & 0x00ff0000) == 0) null_bytes++;
+        if ((out[k] & 0xff000000) == 0) null_bytes++;
+      }
+
+      if (null_bytes < MIN_NULL_BYTES) continue;
+    }
+
+    if (atomic_inc (&hashes_shown[digests_offset]) == 0)
+    {
+      mark_hash (plains_buf, d_return_buf, salt_pos, digests_cnt, 0, digests_offset + 0, gid, il_pos, 0, 0);
+    }
   }
 }
 
@@ -279,7 +596,13 @@ KERNEL_FQ void m09820_m04 (KERN_ATTR_ESALT (oldoffice34_t))
 
   const u32 pw_len = pws[gid].pw_len & 63;
 
-  m09820m (w0, w1, w2, w3, pw_len, pws, rules_buf, combs_buf, bfs_buf, tmps, hooks, bitmaps_buf_s1_a, bitmaps_buf_s1_b, bitmaps_buf_s1_c, bitmaps_buf_s1_d, bitmaps_buf_s2_a, bitmaps_buf_s2_b, bitmaps_buf_s2_c, bitmaps_buf_s2_d, plains_buf, digests_buf, hashes_shown, salt_bufs, esalt_bufs, d_return_buf, d_extra0_buf, d_extra1_buf, d_extra2_buf, d_extra3_buf, bitmap_mask, bitmap_shift1, bitmap_shift2, salt_pos, loop_pos, loop_cnt, il_cnt, digests_cnt, digests_offset, combs_mode, gid_max);
+  /**
+   * main
+   */
+
+  LOCAL_VK RC4_KEY rc4_keys[64];
+
+  m09820m (rc4_keys, w0, w1, w2, w3, pw_len, pws, rules_buf, combs_buf, bfs_buf, tmps, hooks, bitmaps_buf_s1_a, bitmaps_buf_s1_b, bitmaps_buf_s1_c, bitmaps_buf_s1_d, bitmaps_buf_s2_a, bitmaps_buf_s2_b, bitmaps_buf_s2_c, bitmaps_buf_s2_d, plains_buf, digests_buf, hashes_shown, salt_bufs, esalt_bufs, d_return_buf, d_extra0_buf, d_extra1_buf, d_extra2_buf, d_extra3_buf, bitmap_mask, bitmap_shift1, bitmap_shift2, salt_pos, loop_pos, loop_cnt, il_cnt, digests_cnt, digests_offset, combs_mode, gid_max);
 }
 
 KERNEL_FQ void m09820_m08 (KERN_ATTR_ESALT (oldoffice34_t))
@@ -322,7 +645,13 @@ KERNEL_FQ void m09820_m08 (KERN_ATTR_ESALT (oldoffice34_t))
 
   const u32 pw_len = pws[gid].pw_len & 63;
 
-  m09820m (w0, w1, w2, w3, pw_len, pws, rules_buf, combs_buf, bfs_buf, tmps, hooks, bitmaps_buf_s1_a, bitmaps_buf_s1_b, bitmaps_buf_s1_c, bitmaps_buf_s1_d, bitmaps_buf_s2_a, bitmaps_buf_s2_b, bitmaps_buf_s2_c, bitmaps_buf_s2_d, plains_buf, digests_buf, hashes_shown, salt_bufs, esalt_bufs, d_return_buf, d_extra0_buf, d_extra1_buf, d_extra2_buf, d_extra3_buf, bitmap_mask, bitmap_shift1, bitmap_shift2, salt_pos, loop_pos, loop_cnt, il_cnt, digests_cnt, digests_offset, combs_mode, gid_max);
+  /**
+   * main
+   */
+
+  LOCAL_VK RC4_KEY rc4_keys[64];
+
+  m09820m (rc4_keys, w0, w1, w2, w3, pw_len, pws, rules_buf, combs_buf, bfs_buf, tmps, hooks, bitmaps_buf_s1_a, bitmaps_buf_s1_b, bitmaps_buf_s1_c, bitmaps_buf_s1_d, bitmaps_buf_s2_a, bitmaps_buf_s2_b, bitmaps_buf_s2_c, bitmaps_buf_s2_d, plains_buf, digests_buf, hashes_shown, salt_bufs, esalt_bufs, d_return_buf, d_extra0_buf, d_extra1_buf, d_extra2_buf, d_extra3_buf, bitmap_mask, bitmap_shift1, bitmap_shift2, salt_pos, loop_pos, loop_cnt, il_cnt, digests_cnt, digests_offset, combs_mode, gid_max);
 }
 
 KERNEL_FQ void m09820_m16 (KERN_ATTR_ESALT (oldoffice34_t))
@@ -365,7 +694,13 @@ KERNEL_FQ void m09820_m16 (KERN_ATTR_ESALT (oldoffice34_t))
 
   const u32 pw_len = pws[gid].pw_len & 63;
 
-  m09820m (w0, w1, w2, w3, pw_len, pws, rules_buf, combs_buf, bfs_buf, tmps, hooks, bitmaps_buf_s1_a, bitmaps_buf_s1_b, bitmaps_buf_s1_c, bitmaps_buf_s1_d, bitmaps_buf_s2_a, bitmaps_buf_s2_b, bitmaps_buf_s2_c, bitmaps_buf_s2_d, plains_buf, digests_buf, hashes_shown, salt_bufs, esalt_bufs, d_return_buf, d_extra0_buf, d_extra1_buf, d_extra2_buf, d_extra3_buf, bitmap_mask, bitmap_shift1, bitmap_shift2, salt_pos, loop_pos, loop_cnt, il_cnt, digests_cnt, digests_offset, combs_mode, gid_max);
+  /**
+   * main
+   */
+
+  LOCAL_VK RC4_KEY rc4_keys[64];
+
+  m09820m (rc4_keys, w0, w1, w2, w3, pw_len, pws, rules_buf, combs_buf, bfs_buf, tmps, hooks, bitmaps_buf_s1_a, bitmaps_buf_s1_b, bitmaps_buf_s1_c, bitmaps_buf_s1_d, bitmaps_buf_s2_a, bitmaps_buf_s2_b, bitmaps_buf_s2_c, bitmaps_buf_s2_d, plains_buf, digests_buf, hashes_shown, salt_bufs, esalt_bufs, d_return_buf, d_extra0_buf, d_extra1_buf, d_extra2_buf, d_extra3_buf, bitmap_mask, bitmap_shift1, bitmap_shift2, salt_pos, loop_pos, loop_cnt, il_cnt, digests_cnt, digests_offset, combs_mode, gid_max);
 }
 
 KERNEL_FQ void m09820_s04 (KERN_ATTR_ESALT (oldoffice34_t))
@@ -408,7 +743,13 @@ KERNEL_FQ void m09820_s04 (KERN_ATTR_ESALT (oldoffice34_t))
 
   const u32 pw_len = pws[gid].pw_len & 63;
 
-  m09820s (w0, w1, w2, w3, pw_len, pws, rules_buf, combs_buf, bfs_buf, tmps, hooks, bitmaps_buf_s1_a, bitmaps_buf_s1_b, bitmaps_buf_s1_c, bitmaps_buf_s1_d, bitmaps_buf_s2_a, bitmaps_buf_s2_b, bitmaps_buf_s2_c, bitmaps_buf_s2_d, plains_buf, digests_buf, hashes_shown, salt_bufs, esalt_bufs, d_return_buf, d_extra0_buf, d_extra1_buf, d_extra2_buf, d_extra3_buf, bitmap_mask, bitmap_shift1, bitmap_shift2, salt_pos, loop_pos, loop_cnt, il_cnt, digests_cnt, digests_offset, combs_mode, gid_max);
+  /**
+   * main
+   */
+
+  LOCAL_VK RC4_KEY rc4_keys[64];
+
+  m09820s (rc4_keys, w0, w1, w2, w3, pw_len, pws, rules_buf, combs_buf, bfs_buf, tmps, hooks, bitmaps_buf_s1_a, bitmaps_buf_s1_b, bitmaps_buf_s1_c, bitmaps_buf_s1_d, bitmaps_buf_s2_a, bitmaps_buf_s2_b, bitmaps_buf_s2_c, bitmaps_buf_s2_d, plains_buf, digests_buf, hashes_shown, salt_bufs, esalt_bufs, d_return_buf, d_extra0_buf, d_extra1_buf, d_extra2_buf, d_extra3_buf, bitmap_mask, bitmap_shift1, bitmap_shift2, salt_pos, loop_pos, loop_cnt, il_cnt, digests_cnt, digests_offset, combs_mode, gid_max);
 }
 
 KERNEL_FQ void m09820_s08 (KERN_ATTR_ESALT (oldoffice34_t))
@@ -451,7 +792,13 @@ KERNEL_FQ void m09820_s08 (KERN_ATTR_ESALT (oldoffice34_t))
 
   const u32 pw_len = pws[gid].pw_len & 63;
 
-  m09820s (w0, w1, w2, w3, pw_len, pws, rules_buf, combs_buf, bfs_buf, tmps, hooks, bitmaps_buf_s1_a, bitmaps_buf_s1_b, bitmaps_buf_s1_c, bitmaps_buf_s1_d, bitmaps_buf_s2_a, bitmaps_buf_s2_b, bitmaps_buf_s2_c, bitmaps_buf_s2_d, plains_buf, digests_buf, hashes_shown, salt_bufs, esalt_bufs, d_return_buf, d_extra0_buf, d_extra1_buf, d_extra2_buf, d_extra3_buf, bitmap_mask, bitmap_shift1, bitmap_shift2, salt_pos, loop_pos, loop_cnt, il_cnt, digests_cnt, digests_offset, combs_mode, gid_max);
+  /**
+   * main
+   */
+
+  LOCAL_VK RC4_KEY rc4_keys[64];
+
+  m09820s (rc4_keys, w0, w1, w2, w3, pw_len, pws, rules_buf, combs_buf, bfs_buf, tmps, hooks, bitmaps_buf_s1_a, bitmaps_buf_s1_b, bitmaps_buf_s1_c, bitmaps_buf_s1_d, bitmaps_buf_s2_a, bitmaps_buf_s2_b, bitmaps_buf_s2_c, bitmaps_buf_s2_d, plains_buf, digests_buf, hashes_shown, salt_bufs, esalt_bufs, d_return_buf, d_extra0_buf, d_extra1_buf, d_extra2_buf, d_extra3_buf, bitmap_mask, bitmap_shift1, bitmap_shift2, salt_pos, loop_pos, loop_cnt, il_cnt, digests_cnt, digests_offset, combs_mode, gid_max);
 }
 
 KERNEL_FQ void m09820_s16 (KERN_ATTR_ESALT (oldoffice34_t))
@@ -494,5 +841,11 @@ KERNEL_FQ void m09820_s16 (KERN_ATTR_ESALT (oldoffice34_t))
 
   const u32 pw_len = pws[gid].pw_len & 63;
 
-  m09820s (w0, w1, w2, w3, pw_len, pws, rules_buf, combs_buf, bfs_buf, tmps, hooks, bitmaps_buf_s1_a, bitmaps_buf_s1_b, bitmaps_buf_s1_c, bitmaps_buf_s1_d, bitmaps_buf_s2_a, bitmaps_buf_s2_b, bitmaps_buf_s2_c, bitmaps_buf_s2_d, plains_buf, digests_buf, hashes_shown, salt_bufs, esalt_bufs, d_return_buf, d_extra0_buf, d_extra1_buf, d_extra2_buf, d_extra3_buf, bitmap_mask, bitmap_shift1, bitmap_shift2, salt_pos, loop_pos, loop_cnt, il_cnt, digests_cnt, digests_offset, combs_mode, gid_max);
+  /**
+   * main
+   */
+
+  LOCAL_VK RC4_KEY rc4_keys[64];
+
+  m09820s (rc4_keys, w0, w1, w2, w3, pw_len, pws, rules_buf, combs_buf, bfs_buf, tmps, hooks, bitmaps_buf_s1_a, bitmaps_buf_s1_b, bitmaps_buf_s1_c, bitmaps_buf_s1_d, bitmaps_buf_s2_a, bitmaps_buf_s2_b, bitmaps_buf_s2_c, bitmaps_buf_s2_d, plains_buf, digests_buf, hashes_shown, salt_bufs, esalt_bufs, d_return_buf, d_extra0_buf, d_extra1_buf, d_extra2_buf, d_extra3_buf, bitmap_mask, bitmap_shift1, bitmap_shift2, salt_pos, loop_pos, loop_cnt, il_cnt, digests_cnt, digests_offset, combs_mode, gid_max);
 }
diff --git a/src/modules/module_09800.c b/src/modules/module_09800.c
index b191924dc..61ab1471a 100644
--- a/src/modules/module_09800.c
+++ b/src/modules/module_09800.c
@@ -49,6 +49,8 @@ typedef struct oldoffice34
   u32 version;
   u32 encryptedVerifier[4];
   u32 encryptedVerifierHash[5];
+  u32 secondBlockData[8];
+  u32 secondBlockLen;
   u32 rc4key[2];
 
 } oldoffice34_t;
@@ -137,7 +139,22 @@ int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
   token.attr[4]    = TOKEN_ATTR_VERIFY_LENGTH
                    | TOKEN_ATTR_VERIFY_HEX;
 
-  const int rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);
+  int rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);
+
+  // alternative format (with second block data):
+
+  if (rc_tokenizer == PARSER_TOKEN_LENGTH) // or just rc_tokenizer != PARSER_OK
+  {
+    token.token_cnt = 6;
+
+    token.len_min[5] = 64;
+    token.len_max[5] = 64;
+    token.sep[5]     = '*';
+    token.attr[5]    = TOKEN_ATTR_VERIFY_LENGTH
+                     | TOKEN_ATTR_VERIFY_HEX;
+
+    rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);
+  }
 
   if (rc_tokenizer != PARSER_OK) return (rc_tokenizer);
 
@@ -165,6 +182,24 @@ int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
   oldoffice34->encryptedVerifierHash[3] = hex_to_u32 (encryptedVerifierHash_pos + 24);
   oldoffice34->encryptedVerifierHash[4] = hex_to_u32 (encryptedVerifierHash_pos + 32);
 
+  // second block (if needed)
+
+  oldoffice34->secondBlockLen = 0;
+
+  if (token.token_cnt == 6)
+  {
+    oldoffice34->secondBlockData[0] = 0;
+
+    const u8 *second_block_data = token.buf[5];
+
+    for (int i = 0, j = 0; i < 8; i += 1, j += 8)
+    {
+      oldoffice34->secondBlockData[i] = hex_to_u32 (second_block_data + j);
+    }
+
+    oldoffice34->secondBlockLen = 64;
+  }
+
   // salt
 
   salt->salt_len = 16;
@@ -208,7 +243,23 @@ int module_hash_encode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
 {
   const oldoffice34_t *oldoffice34 = (const oldoffice34_t *) esalt_buf;
 
-  const int line_len = snprintf (line_buf, line_size, "%s%u*%08x%08x%08x%08x*%08x%08x%08x%08x*%08x%08x%08x%08x%08x",
+  u8 secondBlockData[64 + 1 + 1];
+
+  memset (secondBlockData, 0, sizeof (secondBlockData));
+
+  if (oldoffice34->secondBlockLen != 0)
+  {
+    secondBlockData[0] = '*';
+
+    u8 *ptr = (u8 *) oldoffice34->secondBlockData;
+
+    for (int i = 0, j = 1; i < 32; i += 1, j += 2)
+    {
+      u8_to_hex (ptr[i], secondBlockData + j);
+    }
+  }
+
+  const int line_len = snprintf (line_buf, line_size, "%s%u*%08x%08x%08x%08x*%08x%08x%08x%08x*%08x%08x%08x%08x%08x%s",
     SIGNATURE_OLDOFFICE,
     oldoffice34->version,
     salt->salt_buf[0],
@@ -223,7 +274,8 @@ int module_hash_encode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
     byte_swap_32 (oldoffice34->encryptedVerifierHash[1]),
     byte_swap_32 (oldoffice34->encryptedVerifierHash[2]),
     byte_swap_32 (oldoffice34->encryptedVerifierHash[3]),
-    byte_swap_32 (oldoffice34->encryptedVerifierHash[4]));
+    byte_swap_32 (oldoffice34->encryptedVerifierHash[4]),
+    secondBlockData);
 
   return line_len;
 }
diff --git a/src/modules/module_09810.c b/src/modules/module_09810.c
index fd80151fa..ff9ccd2a5 100644
--- a/src/modules/module_09810.c
+++ b/src/modules/module_09810.c
@@ -48,6 +48,8 @@ typedef struct oldoffice34
   u32 version;
   u32 encryptedVerifier[4];
   u32 encryptedVerifierHash[5];
+  u32 secondBlockData[8];
+  u32 secondBlockLen;
   u32 rc4key[2];
 
 } oldoffice34_t;
@@ -144,7 +146,22 @@ int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
   token.attr[4]    = TOKEN_ATTR_VERIFY_LENGTH
                    | TOKEN_ATTR_VERIFY_HEX;
 
-  const int rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);
+  int rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);
+
+  // alternative format (with second block data):
+
+  if (rc_tokenizer == PARSER_TOKEN_LENGTH) // or just rc_tokenizer != PARSER_OK
+  {
+    token.token_cnt = 6;
+
+    token.len_min[5] = 64;
+    token.len_max[5] = 64;
+    token.sep[5]     = '*';
+    token.attr[5]    = TOKEN_ATTR_VERIFY_LENGTH
+                     | TOKEN_ATTR_VERIFY_HEX;
+
+    rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);
+  }
 
   if (rc_tokenizer != PARSER_OK) return (rc_tokenizer);
 
@@ -172,6 +189,24 @@ int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
   oldoffice34->encryptedVerifierHash[3] = hex_to_u32 (encryptedVerifierHash_pos + 24);
   oldoffice34->encryptedVerifierHash[4] = hex_to_u32 (encryptedVerifierHash_pos + 32);
 
+  // second block (if needed)
+
+  oldoffice34->secondBlockLen = 0;
+
+  if (token.token_cnt == 6)
+  {
+    oldoffice34->secondBlockData[0] = 0;
+
+    const u8 *second_block_data = token.buf[5];
+
+    for (int i = 0, j = 0; i < 8; i += 1, j += 8)
+    {
+      oldoffice34->secondBlockData[i] = hex_to_u32 (second_block_data + j);
+    }
+
+    oldoffice34->secondBlockLen = 64;
+  }
+
   // salt
 
   salt->salt_len = 16;
@@ -215,7 +250,23 @@ int module_hash_encode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
 {
   const oldoffice34_t *oldoffice34 = (const oldoffice34_t *) esalt_buf;
 
-  const int line_len = snprintf (line_buf, line_size, "%s%u*%08x%08x%08x%08x*%08x%08x%08x%08x*%08x%08x%08x%08x%08x",
+  u8 secondBlockData[64 + 1 + 1];
+
+  memset (secondBlockData, 0, sizeof (secondBlockData));
+
+  if (oldoffice34->secondBlockLen != 0)
+  {
+    secondBlockData[0] = '*';
+
+    u8 *ptr = (u8 *) oldoffice34->secondBlockData;
+
+    for (int i = 0, j = 1; i < 32; i += 1, j += 2)
+    {
+      u8_to_hex (ptr[i], secondBlockData + j);
+    }
+  }
+
+  const int line_len = snprintf (line_buf, line_size, "%s%u*%08x%08x%08x%08x*%08x%08x%08x%08x*%08x%08x%08x%08x%08x%s",
     SIGNATURE_OLDOFFICE,
     oldoffice34->version,
     salt->salt_buf[0],
@@ -230,7 +281,8 @@ int module_hash_encode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
     byte_swap_32 (oldoffice34->encryptedVerifierHash[1]),
     byte_swap_32 (oldoffice34->encryptedVerifierHash[2]),
     byte_swap_32 (oldoffice34->encryptedVerifierHash[3]),
-    byte_swap_32 (oldoffice34->encryptedVerifierHash[4]));
+    byte_swap_32 (oldoffice34->encryptedVerifierHash[4]),
+    secondBlockData);
 
   return line_len;
 }
diff --git a/src/modules/module_09820.c b/src/modules/module_09820.c
index fd1aeabc1..7a6b2869c 100644
--- a/src/modules/module_09820.c
+++ b/src/modules/module_09820.c
@@ -50,6 +50,8 @@ typedef struct oldoffice34
   u32 version;
   u32 encryptedVerifier[4];
   u32 encryptedVerifierHash[5];
+  u32 secondBlockData[8];
+  u32 secondBlockLen;
   u32 rc4key[2];
 
 } oldoffice34_t;
@@ -117,7 +119,29 @@ int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
   token.attr[5]    = TOKEN_ATTR_VERIFY_LENGTH
                    | TOKEN_ATTR_VERIFY_HEX;
 
-  const int rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);
+  int rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);
+
+  // alternative format (with second block data):
+
+  if (rc_tokenizer == PARSER_TOKEN_LENGTH) // or just rc_tokenizer != PARSER_OK
+  {
+    token.token_cnt = 7;
+
+    token.sep[4]     = '*';
+
+    token.len_min[5] = 64;
+    token.len_max[5] = 64;
+    token.sep[5]     = ':';
+    token.attr[5]    = TOKEN_ATTR_VERIFY_LENGTH
+                     | TOKEN_ATTR_VERIFY_HEX;
+
+    token.len_min[6] = 10;
+    token.len_max[6] = 10;
+    token.attr[6]    = TOKEN_ATTR_VERIFY_LENGTH
+                     | TOKEN_ATTR_VERIFY_HEX;
+
+    rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);
+  }
 
   if (rc_tokenizer != PARSER_OK) return (rc_tokenizer);
 
@@ -125,7 +149,10 @@ int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
   const u8 *osalt_pos                 = token.buf[2];
   const u8 *encryptedVerifier_pos     = token.buf[3];
   const u8 *encryptedVerifierHash_pos = token.buf[4];
-  const u8 *rc4key_pos                = token.buf[5];
+
+  const u8 rc4_idx = token.token_cnt - 1;
+
+  const u8 *rc4key_pos                = token.buf[rc4_idx];
 
   // esalt
 
@@ -163,6 +190,24 @@ int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
   oldoffice34->rc4key[0] = byte_swap_32 (oldoffice34->rc4key[0]);
   oldoffice34->rc4key[1] = byte_swap_32 (oldoffice34->rc4key[1]);
 
+  // second block (if needed)
+
+  oldoffice34->secondBlockLen = 0;
+
+  if (token.token_cnt == 7)
+  {
+    oldoffice34->secondBlockData[0] = 0;
+
+    const u8 *second_block_data = token.buf[5];
+
+    for (int i = 0, j = 0; i < 8; i += 1, j += 8)
+    {
+      oldoffice34->secondBlockData[i] = hex_to_u32 (second_block_data + j);
+    }
+
+    oldoffice34->secondBlockLen = 64;
+  }
+
   // salt
 
   salt->salt_len = 16;
@@ -208,7 +253,23 @@ int module_hash_encode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
 
   const u8 *rc4key = (const u8 *) oldoffice34->rc4key;
 
-  const int line_len = snprintf (line_buf, line_size, "%s%u*%08x%08x%08x%08x*%08x%08x%08x%08x*%08x%08x%08x%08x%08x:%02x%02x%02x%02x%02x",
+  u8 secondBlockData[64 + 1 + 1];
+
+  memset (secondBlockData, 0, sizeof (secondBlockData));
+
+  if (oldoffice34->secondBlockLen != 0)
+  {
+    secondBlockData[0] = '*';
+
+    u8 *ptr = (u8 *) oldoffice34->secondBlockData;
+
+    for (int i = 0, j = 1; i < 32; i += 1, j += 2)
+    {
+      u8_to_hex (ptr[i], secondBlockData + j);
+    }
+  }
+
+  const int line_len = snprintf (line_buf, line_size, "%s%u*%08x%08x%08x%08x*%08x%08x%08x%08x*%08x%08x%08x%08x%08x%s:%02x%02x%02x%02x%02x",
     SIGNATURE_OLDOFFICE,
     oldoffice34->version,
     salt->salt_buf[0],
@@ -224,6 +285,7 @@ int module_hash_encode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
     byte_swap_32 (oldoffice34->encryptedVerifierHash[2]),
     byte_swap_32 (oldoffice34->encryptedVerifierHash[3]),
     byte_swap_32 (oldoffice34->encryptedVerifierHash[4]),
+    secondBlockData,
     rc4key[0],
     rc4key[1],
     rc4key[2],
diff --git a/tools/test_modules/m09800.pm b/tools/test_modules/m09800.pm
index 5e4c7a39d..995a92a07 100644
--- a/tools/test_modules/m09800.pm
+++ b/tools/test_modules/m09800.pm
@@ -20,6 +20,7 @@ sub module_generate_hash
   my $salt   = shift;
   my $param  = shift;
   my $param2 = shift;
+  my $param3 = shift;
 
   my $salt_bin = pack ("H*", $salt);
 
@@ -64,7 +65,67 @@ sub module_generate_hash
   my $encrypted1 = $m->RC4 ($data1_buf);
   my $encrypted2 = $m->RC4 ($data2_buf);
 
-  my $hash = sprintf ("\$oldoffice\$%d*%s*%s*%s", $version, $salt, unpack ("H*", $encrypted1), unpack ("H*", $encrypted2));
+
+  my $secblock = "";
+
+  if ($version == 3)
+  {
+    my $key2 = substr (sha1 ($tmp . "\x01\x00\x00\x00"), 0, 5) . "\x00" x 11;
+
+    my $rc4 = Crypt::RC4->new ($key2);
+
+    if (defined $param3) # verify/decrypt:
+    {
+      if (length ($param3) > 0)
+      {
+        my $decrypted = $rc4->RC4 (pack ("H*", $param3));
+
+        # count the number of NUL (\x00) bytes:
+
+        my $num_nul_bytes = 0;
+
+        for (my $i = 0; $i < 32; $i++)
+        {
+          $num_nul_bytes++ if (substr ($decrypted, $i, 1) eq "\x00");
+        }
+
+        if ($num_nul_bytes < 10)
+        {
+          $secblock = "*"; # incorrect/fake/empty result
+        }
+        else
+        {
+          $secblock = "*$param3";
+        }
+      }
+    }
+    else
+    {
+      if (random_number (0, 1) == 1) # the second block data is optional
+      {
+        my $num_zeros = random_number (10, 32); # at least 10 NUL bytes
+
+        $secblock = "\x00" x $num_zeros;
+
+        # fill the buffer with some random bytes (up to 32 bytes total):
+
+        for (my $i = 0; $i < 32 - $num_zeros; $i++)
+        {
+          my $idx = random_number (0, $num_zeros + $i); # insert at random position
+
+          my $c = random_bytes (1); # 0x00-0xff
+
+          $secblock = substr ($secblock, 0, $idx) . $c . substr ($secblock, $idx);
+        }
+
+        $secblock = $rc4->RC4 ($secblock);
+
+        $secblock = "*" . unpack ("H*", $secblock);
+      }
+    }
+  }
+
+  my $hash = sprintf ("\$oldoffice\$%d*%s*%s*%s%s", $version, $salt, unpack ("H*", $encrypted1), unpack ("H*", $encrypted2), $secblock);
 
   return $hash;
 }
@@ -81,7 +142,9 @@ sub module_verify_hash
 
   my @data = split /\*/, $hash_in;
 
-  return unless scalar @data == 4;
+  my $num_fields = scalar @data;
+
+  return unless (($num_fields == 4) || ($num_fields == 5));
 
   my $signature = shift @data;
 
@@ -95,6 +158,15 @@ sub module_verify_hash
   my $param = shift @data;
   my $param2 = substr ($signature, 11, 1);
 
+  my $param3 = "";
+
+  if ($num_fields == 5)
+  {
+    shift @data; # ignore the "digest"
+
+    $param3 = shift @data;
+  }
+
   return unless defined $salt;
   return unless defined $word;
   return unless defined $param;
@@ -102,7 +174,7 @@ sub module_verify_hash
 
   $word = pack_if_HEX_notation ($word);
 
-  my $new_hash = module_generate_hash ($word, $salt, $param, $param2);
+  my $new_hash = module_generate_hash ($word, $salt, $param, $param2, $param3);
 
   return ($new_hash, $word);
 }