diff --git a/OpenCL/m10410_a0.cl b/OpenCL/m10410_a0.cl
index 041bd0cd2..845834048 100644
--- a/OpenCL/m10410_a0.cl
+++ b/OpenCL/m10410_a0.cl
@@ -7,6 +7,9 @@
 
 #define _MD5_
 
+//too much register pressure
+//#define NEW_SIMD_CODE
+
 #include "include/constants.h"
 #include "include/kernel_vendor.h"
 
@@ -20,9 +23,7 @@
 #include "OpenCL/common.c"
 #include "include/rp_kernel.h"
 #include "OpenCL/rp.c"
-
-#define COMPARE_S "OpenCL/check_single_comp4.c"
-#define COMPARE_M "OpenCL/check_multi_comp4.c"
+#include "OpenCL/simd.c"
 
 __constant u32 padding[8] =
 {
@@ -89,6 +90,7 @@ static void rc4_init_16 (__local RC4_KEY *rc4_key, const u32 data[4])
 
 static u8 rc4_next_16 (__local RC4_KEY *rc4_key, u8 i, u8 j, __constant u32 *in, u32 out[4])
 {
+  #pragma unroll 4
   for (u32 k = 0; k < 4; k++)
   {
     u32 xor4 = 0;
@@ -154,14 +156,12 @@ __kernel void m10410_m04 (__global pw_t *pws, __global kernel_rule_t *rules_buf,
   if (gid >= gid_max) return;
 
   u32 pw_buf0[4];
+  u32 pw_buf1[4];
 
   pw_buf0[0] = pws[gid].i[ 0];
   pw_buf0[1] = pws[gid].i[ 1];
   pw_buf0[2] = pws[gid].i[ 2];
   pw_buf0[3] = pws[gid].i[ 3];
-
-  u32 pw_buf1[4];
-
   pw_buf1[0] = pws[gid].i[ 4];
   pw_buf1[1] = pws[gid].i[ 5];
   pw_buf1[2] = pws[gid].i[ 6];
@@ -170,7 +170,7 @@ __kernel void m10410_m04 (__global pw_t *pws, __global kernel_rule_t *rules_buf,
   const u32 pw_len = pws[gid].pw_len;
 
   /**
-   * key
+   * shared
    */
 
   __local RC4_KEY rc4_keys[64];
@@ -180,59 +180,26 @@ __kernel void m10410_m04 (__global pw_t *pws, __global kernel_rule_t *rules_buf,
    * loop
    */
 
-  for (u32 il_pos = 0; il_pos < il_cnt; il_pos++)
+  for (u32 il_pos = 0; il_pos < il_cnt; il_pos += VECT_SIZE)
   {
-    u32 w0[4];
-
-    w0[0] = pw_buf0[0];
-    w0[1] = pw_buf0[1];
-    w0[2] = pw_buf0[2];
-    w0[3] = pw_buf0[3];
-
-    u32 w1[4];
-
-    w1[0] = pw_buf1[0];
-    w1[1] = pw_buf1[1];
-    w1[2] = pw_buf1[2];
-    w1[3] = pw_buf1[3];
-
-    u32 w2[4];
-
-    w2[0] = 0;
-    w2[1] = 0;
-    w2[2] = 0;
-    w2[3] = 0;
+    u32x w0[4] = { 0 };
+    u32x w1[4] = { 0 };
+    u32x w2[4] = { 0 };
+    u32x w3[4] = { 0 };
 
-    u32 w3[4];
+    apply_rules_vect (pw_buf0, pw_buf1, pw_len, rules_buf, il_pos, w0, w1);
 
-    w3[0] = 0;
-    w3[1] = 0;
-    w3[2] = 0;
-    w3[3] = 0;
+    /**
+     * pdf
+     */
 
-    const u32 out_len = apply_rules (rules_buf[il_pos].cmds, w0, w1, pw_len);
-
-    // now the RC4 part
-
-    u32 key[4];
-
-    key[0] = w0[0];
-    key[1] = w0[1];
-    key[2] = 0;
-    key[3] = 0;
-
-    rc4_init_16 (rc4_key, key);
+    rc4_init_16 (rc4_key, w0);
 
     u32 out[4];
 
     rc4_next_16 (rc4_key, 0, 0, padding, out);
 
-    const u32 r0 = out[0];
-    const u32 r1 = out[1];
-    const u32 r2 = out[2];
-    const u32 r3 = out[3];
-
-    #include COMPARE_M
+    COMPARE_M_SIMD (out[0], out[1], out[2], out[3]);
   }
 }
 
@@ -261,14 +228,12 @@ __kernel void m10410_s04 (__global pw_t *pws, __global kernel_rule_t *rules_buf,
   if (gid >= gid_max) return;
 
   u32 pw_buf0[4];
+  u32 pw_buf1[4];
 
   pw_buf0[0] = pws[gid].i[ 0];
   pw_buf0[1] = pws[gid].i[ 1];
   pw_buf0[2] = pws[gid].i[ 2];
   pw_buf0[3] = pws[gid].i[ 3];
-
-  u32 pw_buf1[4];
-
   pw_buf1[0] = pws[gid].i[ 4];
   pw_buf1[1] = pws[gid].i[ 5];
   pw_buf1[2] = pws[gid].i[ 6];
@@ -276,6 +241,13 @@ __kernel void m10410_s04 (__global pw_t *pws, __global kernel_rule_t *rules_buf,
 
   const u32 pw_len = pws[gid].pw_len;
 
+  /**
+   * shared
+   */
+
+  __local RC4_KEY rc4_keys[64];
+  __local RC4_KEY *rc4_key = &rc4_keys[lid];
+
   /**
    * digest
    */
@@ -288,70 +260,30 @@ __kernel void m10410_s04 (__global pw_t *pws, __global kernel_rule_t *rules_buf,
     digests_buf[digests_offset].digest_buf[DGST_R3]
   };
 
-  /**
-   * key
-   */
-
-  __local RC4_KEY rc4_keys[64];
-  __local RC4_KEY *rc4_key = &rc4_keys[lid];
-
   /**
    * loop
    */
 
-  for (u32 il_pos = 0; il_pos < il_cnt; il_pos++)
+  for (u32 il_pos = 0; il_pos < il_cnt; il_pos += VECT_SIZE)
   {
-    u32 w0[4];
+    u32x w0[4] = { 0 };
+    u32x w1[4] = { 0 };
+    u32x w2[4] = { 0 };
+    u32x w3[4] = { 0 };
 
-    w0[0] = pw_buf0[0];
-    w0[1] = pw_buf0[1];
-    w0[2] = pw_buf0[2];
-    w0[3] = pw_buf0[3];
+    apply_rules_vect (pw_buf0, pw_buf1, pw_len, rules_buf, il_pos, w0, w1);
 
-    u32 w1[4];
+    /**
+     * pdf
+     */
 
-    w1[0] = pw_buf1[0];
-    w1[1] = pw_buf1[1];
-    w1[2] = pw_buf1[2];
-    w1[3] = pw_buf1[3];
-
-    u32 w2[4];
-
-    w2[0] = 0;
-    w2[1] = 0;
-    w2[2] = 0;
-    w2[3] = 0;
-
-    u32 w3[4];
-
-    w3[0] = 0;
-    w3[1] = 0;
-    w3[2] = 0;
-    w3[3] = 0;
-
-    const u32 out_len = apply_rules (rules_buf[il_pos].cmds, w0, w1, pw_len);
-
-    // now the RC4 part
-
-    u32 key[4];
-
-    key[0] = w0[0];
-    key[1] = w0[1];
-    key[2] = 0;
-    key[3] = 0;
-
-    rc4_init_16 (rc4_key, key);
+    rc4_init_16 (rc4_key, w0);
 
     u32 out[4];
 
     rc4_next_16 (rc4_key, 0, 0, padding, out);
 
-    const u32 r0 = out[0];
-    const u32 r1 = out[1];
-    const u32 r2 = out[2];
-    const u32 r3 = out[3];
-
-    #include COMPARE_S
+    COMPARE_S_SIMD (out[0], out[1], out[2], out[3]);
   }
 }
 
diff --git a/OpenCL/m10410_a1.cl b/OpenCL/m10410_a1.cl
index ed8ea3899..221519122 100644
--- a/OpenCL/m10410_a1.cl
+++ b/OpenCL/m10410_a1.cl
@@ -7,6 +7,9 @@
 
 #define _MD5_
 
+//too much register pressure
+//#define NEW_SIMD_CODE
+
 #include "include/constants.h"
 #include "include/kernel_vendor.h"
 
@@ -18,9 +21,7 @@
 #include "include/kernel_functions.c"
 #include "OpenCL/types_ocl.c"
 #include "OpenCL/common.c"
-
-#define COMPARE_S "OpenCL/check_single_comp4.c"
-#define COMPARE_M "OpenCL/check_multi_comp4.c"
+#include "OpenCL/simd.c"
 
 __constant u32 padding[8] =
 {
@@ -87,6 +88,7 @@ static void rc4_init_16 (__local RC4_KEY *rc4_key, const u32 data[4])
 
 static u8 rc4_next_16 (__local RC4_KEY *rc4_key, u8 i, u8 j, __constant u32 *in, u32 out[4])
 {
+  #pragma unroll 4
   for (u32 k = 0; k < 4; k++)
   {
     u32 xor4 = 0;
@@ -151,113 +153,121 @@ __kernel void m10410_m04 (__global pw_t *pws, __global kernel_rule_t *rules_buf,
 
   if (gid >= gid_max) return;
 
-  u32 wordl0[4];
-
-  wordl0[0] = pws[gid].i[ 0];
-  wordl0[1] = pws[gid].i[ 1];
-  wordl0[2] = pws[gid].i[ 2];
-  wordl0[3] = pws[gid].i[ 3];
-
-  u32 wordl1[4];
-
-  wordl1[0] = pws[gid].i[ 4];
-  wordl1[1] = pws[gid].i[ 5];
-  wordl1[2] = pws[gid].i[ 6];
-  wordl1[3] = pws[gid].i[ 7];
-
-  u32 wordl2[4];
-
-  wordl2[0] = 0;
-  wordl2[1] = 0;
-  wordl2[2] = 0;
-  wordl2[3] = 0;
+  u32 pw_buf0[4];
+  u32 pw_buf1[4];
 
-  u32 wordl3[4];
-
-  wordl3[0] = 0;
-  wordl3[1] = 0;
-  wordl3[2] = 0;
-  wordl3[3] = 0;
+  pw_buf0[0] = pws[gid].i[0];
+  pw_buf0[1] = pws[gid].i[1];
+  pw_buf0[2] = pws[gid].i[2];
+  pw_buf0[3] = pws[gid].i[3];
+  pw_buf1[0] = pws[gid].i[4];
+  pw_buf1[1] = pws[gid].i[5];
+  pw_buf1[2] = pws[gid].i[6];
+  pw_buf1[3] = pws[gid].i[7];
 
   const u32 pw_l_len = pws[gid].pw_len;
 
-  if (combs_mode == COMBINATOR_MODE_BASE_RIGHT)
-  {
-    switch_buffer_by_offset_le (wordl0, wordl1, wordl2, wordl3, combs_buf[0].pw_len);
-  }
-
   /**
-   * key
+   * shared
    */
 
   __local RC4_KEY rc4_keys[64];
+
   __local RC4_KEY *rc4_key = &rc4_keys[lid];
 
   /**
-   * loop
+   * U_buf
    */
 
-  for (u32 il_pos = 0; il_pos < il_cnt; il_pos++)
-  {
-    u32 wordr0[4];
+  u32 o_buf[8];
 
-    wordr0[0] = combs_buf[il_pos].i[0];
-    wordr0[1] = combs_buf[il_pos].i[1];
-    wordr0[2] = combs_buf[il_pos].i[2];
-    wordr0[3] = combs_buf[il_pos].i[3];
+  o_buf[0] = pdf_bufs[salt_pos].o_buf[0];
+  o_buf[1] = pdf_bufs[salt_pos].o_buf[1];
+  o_buf[2] = pdf_bufs[salt_pos].o_buf[2];
+  o_buf[3] = pdf_bufs[salt_pos].o_buf[3];
+  o_buf[4] = pdf_bufs[salt_pos].o_buf[4];
+  o_buf[5] = pdf_bufs[salt_pos].o_buf[5];
+  o_buf[6] = pdf_bufs[salt_pos].o_buf[6];
+  o_buf[7] = pdf_bufs[salt_pos].o_buf[7];
 
-    u32 wordr1[4];
+  u32 P = pdf_bufs[salt_pos].P;
 
-    wordr1[0] = combs_buf[il_pos].i[4];
-    wordr1[1] = combs_buf[il_pos].i[5];
-    wordr1[2] = combs_buf[il_pos].i[6];
-    wordr1[3] = combs_buf[il_pos].i[7];
+  u32 id_buf[4];
 
-    u32 wordr2[4];
+  id_buf[0] = pdf_bufs[salt_pos].id_buf[0];
+  id_buf[1] = pdf_bufs[salt_pos].id_buf[1];
+  id_buf[2] = pdf_bufs[salt_pos].id_buf[2];
+  id_buf[3] = pdf_bufs[salt_pos].id_buf[3];
 
-    wordr2[0] = 0;
-    wordr2[1] = 0;
-    wordr2[2] = 0;
-    wordr2[3] = 0;
-
-    u32 wordr3[4];
+  /**
+   * loop
+   */
 
-    wordr3[0] = 0;
-    wordr3[1] = 0;
-    wordr3[2] = 0;
-    wordr3[3] = 0;
+  for (u32 il_pos = 0; il_pos < il_cnt; il_pos += VECT_SIZE)
+  {
+    const u32x pw_r_len = pwlenx_create_combt (combs_buf, il_pos);
+
+    const u32x pw_len = pw_l_len + pw_r_len;
+
+    /**
+     * concat password candidate
+     */
+
+    u32x wordl0[4] = { 0 };
+    u32x wordl1[4] = { 0 };
+    u32x wordl2[4] = { 0 };
+    u32x wordl3[4] = { 0 };
+
+    wordl0[0] = pw_buf0[0];
+    wordl0[1] = pw_buf0[1];
+    wordl0[2] = pw_buf0[2];
+    wordl0[3] = pw_buf0[3];
+    wordl1[0] = pw_buf1[0];
+    wordl1[1] = pw_buf1[1];
+    wordl1[2] = pw_buf1[2];
+    wordl1[3] = pw_buf1[3];
+
+    u32x wordr0[4] = { 0 };
+    u32x wordr1[4] = { 0 };
+    u32x wordr2[4] = { 0 };
+    u32x wordr3[4] = { 0 };
+
+    wordr0[0] = ix_create_combt (combs_buf, il_pos, 0);
+    wordr0[1] = ix_create_combt (combs_buf, il_pos, 1);
+    wordr0[2] = ix_create_combt (combs_buf, il_pos, 2);
+    wordr0[3] = ix_create_combt (combs_buf, il_pos, 3);
+    wordr1[0] = ix_create_combt (combs_buf, il_pos, 4);
+    wordr1[1] = ix_create_combt (combs_buf, il_pos, 5);
+    wordr1[2] = ix_create_combt (combs_buf, il_pos, 6);
+    wordr1[3] = ix_create_combt (combs_buf, il_pos, 7);
 
     if (combs_mode == COMBINATOR_MODE_BASE_LEFT)
     {
-      switch_buffer_by_offset_le (wordr0, wordr1, wordr2, wordr3, pw_l_len);
+      switch_buffer_by_offset_le_VV (wordr0, wordr1, wordr2, wordr3, pw_l_len);
+    }
+    else
+    {
+      switch_buffer_by_offset_le_VV (wordl0, wordl1, wordl2, wordl3, pw_r_len);
     }
 
-    u32 w0[2];
+    u32x w0[4];
 
     w0[0] = wordl0[0] | wordr0[0];
     w0[1] = wordl0[1] | wordr0[1];
+    w0[2] = 0;
+    w0[3] = 0;
 
-    // now the RC4 part
+    /**
+     * pdf
+     */
 
-    u32 key[4];
-
-    key[0] = w0[0];
-    key[1] = w0[1];
-    key[2] = 0;
-    key[3] = 0;
-
-    rc4_init_16 (rc4_key, key);
+    rc4_init_16 (rc4_key, w0);
 
     u32 out[4];
 
     rc4_next_16 (rc4_key, 0, 0, padding, out);
 
-    const u32 r0 = out[0];
-    const u32 r1 = out[1];
-    const u32 r2 = out[2];
-    const u32 r3 = out[3];
-
-    #include COMPARE_M
+    COMPARE_M_SIMD (out[0], out[1], out[2], out[3]);
   }
 }
 
@@ -285,40 +295,51 @@ __kernel void m10410_s04 (__global pw_t *pws, __global kernel_rule_t *rules_buf,
 
   if (gid >= gid_max) return;
 
-  u32 wordl0[4];
+  u32 pw_buf0[4];
+  u32 pw_buf1[4];
+
+  pw_buf0[0] = pws[gid].i[0];
+  pw_buf0[1] = pws[gid].i[1];
+  pw_buf0[2] = pws[gid].i[2];
+  pw_buf0[3] = pws[gid].i[3];
+  pw_buf1[0] = pws[gid].i[4];
+  pw_buf1[1] = pws[gid].i[5];
+  pw_buf1[2] = pws[gid].i[6];
+  pw_buf1[3] = pws[gid].i[7];
+
+  const u32 pw_l_len = pws[gid].pw_len;
 
-  wordl0[0] = pws[gid].i[ 0];
-  wordl0[1] = pws[gid].i[ 1];
-  wordl0[2] = pws[gid].i[ 2];
-  wordl0[3] = pws[gid].i[ 3];
+  /**
+   * shared
+   */
 
-  u32 wordl1[4];
+  __local RC4_KEY rc4_keys[64];
 
-  wordl1[0] = pws[gid].i[ 4];
-  wordl1[1] = pws[gid].i[ 5];
-  wordl1[2] = pws[gid].i[ 6];
-  wordl1[3] = pws[gid].i[ 7];
+  __local RC4_KEY *rc4_key = &rc4_keys[lid];
 
-  u32 wordl2[4];
+  /**
+   * U_buf
+   */
 
-  wordl2[0] = 0;
-  wordl2[1] = 0;
-  wordl2[2] = 0;
-  wordl2[3] = 0;
+  u32 o_buf[8];
 
-  u32 wordl3[4];
+  o_buf[0] = pdf_bufs[salt_pos].o_buf[0];
+  o_buf[1] = pdf_bufs[salt_pos].o_buf[1];
+  o_buf[2] = pdf_bufs[salt_pos].o_buf[2];
+  o_buf[3] = pdf_bufs[salt_pos].o_buf[3];
+  o_buf[4] = pdf_bufs[salt_pos].o_buf[4];
+  o_buf[5] = pdf_bufs[salt_pos].o_buf[5];
+  o_buf[6] = pdf_bufs[salt_pos].o_buf[6];
+  o_buf[7] = pdf_bufs[salt_pos].o_buf[7];
 
-  wordl3[0] = 0;
-  wordl3[1] = 0;
-  wordl3[2] = 0;
-  wordl3[3] = 0;
+  u32 P = pdf_bufs[salt_pos].P;
 
-  const u32 pw_l_len = pws[gid].pw_len;
+  u32 id_buf[4];
 
-  if (combs_mode == COMBINATOR_MODE_BASE_RIGHT)
-  {
-    switch_buffer_by_offset_le (wordl0, wordl1, wordl2, wordl3, combs_buf[0].pw_len);
-  }
+  id_buf[0] = pdf_bufs[salt_pos].id_buf[0];
+  id_buf[1] = pdf_bufs[salt_pos].id_buf[1];
+  id_buf[2] = pdf_bufs[salt_pos].id_buf[2];
+  id_buf[3] = pdf_bufs[salt_pos].id_buf[3];
 
   /**
    * digest
@@ -332,78 +353,75 @@ __kernel void m10410_s04 (__global pw_t *pws, __global kernel_rule_t *rules_buf,
     digests_buf[digests_offset].digest_buf[DGST_R3]
   };
 
-  /**
-   * key
-   */
-
-  __local RC4_KEY rc4_keys[64];
-  __local RC4_KEY *rc4_key = &rc4_keys[lid];
-
   /**
    * loop
    */
 
-  for (u32 il_pos = 0; il_pos < il_cnt; il_pos++)
+  for (u32 il_pos = 0; il_pos < il_cnt; il_pos += VECT_SIZE)
   {
-    u32 wordr0[4];
-
-    wordr0[0] = combs_buf[il_pos].i[0];
-    wordr0[1] = combs_buf[il_pos].i[1];
-    wordr0[2] = combs_buf[il_pos].i[2];
-    wordr0[3] = combs_buf[il_pos].i[3];
-
-    u32 wordr1[4];
-
-    wordr1[0] = combs_buf[il_pos].i[4];
-    wordr1[1] = combs_buf[il_pos].i[5];
-    wordr1[2] = combs_buf[il_pos].i[6];
-    wordr1[3] = combs_buf[il_pos].i[7];
-
-    u32 wordr2[4];
-
-    wordr2[0] = 0;
-    wordr2[1] = 0;
-    wordr2[2] = 0;
-    wordr2[3] = 0;
-
-    u32 wordr3[4];
-
-    wordr3[0] = 0;
-    wordr3[1] = 0;
-    wordr3[2] = 0;
-    wordr3[3] = 0;
+    const u32x pw_r_len = pwlenx_create_combt (combs_buf, il_pos);
+
+    const u32x pw_len = pw_l_len + pw_r_len;
+
+    /**
+     * concat password candidate
+     */
+
+    u32x wordl0[4] = { 0 };
+    u32x wordl1[4] = { 0 };
+    u32x wordl2[4] = { 0 };
+    u32x wordl3[4] = { 0 };
+
+    wordl0[0] = pw_buf0[0];
+    wordl0[1] = pw_buf0[1];
+    wordl0[2] = pw_buf0[2];
+    wordl0[3] = pw_buf0[3];
+    wordl1[0] = pw_buf1[0];
+    wordl1[1] = pw_buf1[1];
+    wordl1[2] = pw_buf1[2];
+    wordl1[3] = pw_buf1[3];
+
+    u32x wordr0[4] = { 0 };
+    u32x wordr1[4] = { 0 };
+    u32x wordr2[4] = { 0 };
+    u32x wordr3[4] = { 0 };
+
+    wordr0[0] = ix_create_combt (combs_buf, il_pos, 0);
+    wordr0[1] = ix_create_combt (combs_buf, il_pos, 1);
+    wordr0[2] = ix_create_combt (combs_buf, il_pos, 2);
+    wordr0[3] = ix_create_combt (combs_buf, il_pos, 3);
+    wordr1[0] = ix_create_combt (combs_buf, il_pos, 4);
+    wordr1[1] = ix_create_combt (combs_buf, il_pos, 5);
+    wordr1[2] = ix_create_combt (combs_buf, il_pos, 6);
+    wordr1[3] = ix_create_combt (combs_buf, il_pos, 7);
 
     if (combs_mode == COMBINATOR_MODE_BASE_LEFT)
     {
-      switch_buffer_by_offset_le (wordr0, wordr1, wordr2, wordr3, pw_l_len);
+      switch_buffer_by_offset_le_VV (wordr0, wordr1, wordr2, wordr3, pw_l_len);
+    }
+    else
+    {
+      switch_buffer_by_offset_le_VV (wordl0, wordl1, wordl2, wordl3, pw_r_len);
     }
 
-    u32 w0[2];
+    u32x w0[4];
 
     w0[0] = wordl0[0] | wordr0[0];
     w0[1] = wordl0[1] | wordr0[1];
+    w0[2] = 0;
+    w0[3] = 0;
 
-    // now the RC4 part
+    /**
+     * pdf
+     */
 
-    u32 key[4];
-
-    key[0] = w0[0];
-    key[1] = w0[1];
-    key[2] = 0;
-    key[3] = 0;
-
-    rc4_init_16 (rc4_key, key);
+    rc4_init_16 (rc4_key, w0);
 
     u32 out[4];
 
     rc4_next_16 (rc4_key, 0, 0, padding, out);
 
-    const u32 r0 = out[0];
-    const u32 r1 = out[1];
-    const u32 r2 = out[2];
-    const u32 r3 = out[3];
-
-    #include COMPARE_S
+    COMPARE_S_SIMD (out[0], out[1], out[2], out[3]);
   }
 }
 
diff --git a/OpenCL/m10410_a3.cl b/OpenCL/m10410_a3.cl
index 990987ec3..459d3f4b4 100644
--- a/OpenCL/m10410_a3.cl
+++ b/OpenCL/m10410_a3.cl
@@ -7,6 +7,9 @@
 
 #define _MD5_
 
+//too much register pressure
+//#define NEW_SIMD_CODE
+
 #include "include/constants.h"
 #include "include/kernel_vendor.h"
 
@@ -85,6 +88,7 @@ static void rc4_init_16 (__local RC4_KEY *rc4_key, const u32 data[4])
 
 static u8 rc4_next_16 (__local RC4_KEY *rc4_key, u8 i, u8 j, __constant u32 *in, u32 out[4])
 {
+  #pragma unroll 4
   for (u32 k = 0; k < 4; k++)
   {
     u32 xor4 = 0;
@@ -142,6 +146,10 @@ static void m10410m (__local RC4_KEY *rc4_keys, u32 w0[4], u32 w1[4], u32 w2[4],
   const u32 gid = get_global_id (0);
   const u32 lid = get_local_id (0);
 
+  /**
+   * shared
+   */
+
   __local RC4_KEY *rc4_key = &rc4_keys[lid];
 
   /**
@@ -156,16 +164,13 @@ static void m10410m (__local RC4_KEY *rc4_keys, u32 w0[4], u32 w1[4], u32 w2[4],
 
     const u32 w0lr = w0l | w0r;
 
-    // now the RC4 part
-
-    u32 key[4];
+    w0[0] = w0lr;
 
-    key[0] = w0lr;
-    key[1] = w0[1];
-    key[2] = 0;
-    key[3] = 0;
+    /**
+     * pdf
+     */
 
-    rc4_init_16 (rc4_key, key);
+    rc4_init_16 (rc4_key, w0);
 
     u32 out[4];
 
@@ -184,6 +189,10 @@ static void m10410s (__local RC4_KEY *rc4_keys, u32 w0[4], u32 w1[4], u32 w2[4],
   const u32 gid = get_global_id (0);
   const u32 lid = get_local_id (0);
 
+  /**
+   * shared
+   */
+
   __local RC4_KEY *rc4_key = &rc4_keys[lid];
 
   /**
@@ -210,16 +219,13 @@ static void m10410s (__local RC4_KEY *rc4_keys, u32 w0[4], u32 w1[4], u32 w2[4],
 
     const u32 w0lr = w0l | w0r;
 
-    // now the RC4 part
-
-    u32 key[4];
+    w0[0] = w0lr;
 
-    key[0] = w0lr;
-    key[1] = w0[1];
-    key[2] = 0;
-    key[3] = 0;
+    /**
+     * pdf
+     */
 
-    rc4_init_16 (rc4_key, key);
+    rc4_init_16 (rc4_key, w0);
 
     u32 out[4];