diff --git a/OpenCL/m19500_a0-pure.cl b/OpenCL/m19500_a0-pure.cl
new file mode 100644
index 000000000..51d514be4
--- /dev/null
+++ b/OpenCL/m19500_a0-pure.cl
@@ -0,0 +1,321 @@
+/**
+ * Author......: See docs/credits.txt
+ * License.....: MIT
+ */
+
+//#define NEW_SIMD_CODE
+
+#include "inc_vendor.cl"
+#include "inc_hash_constants.h"
+#include "inc_hash_functions.cl"
+#include "inc_types.cl"
+#include "inc_common.cl"
+#include "inc_rp.h"
+#include "inc_rp.cl"
+#include "inc_scalar.cl"
+#include "inc_hash_sha1.cl"
+
+typedef struct devise_hash
+{
+  u32 salt_buf[64];
+  int salt_len;
+
+  u32 site_key_buf[64];
+  int site_key_len;
+
+} devise_hash_t;
+
+#if   VECT_SIZE == 1
+#define uint_to_hex_lower8_le(i) (u32x) (l_bin2asc[(i)])
+#elif VECT_SIZE == 2
+#define uint_to_hex_lower8_le(i) (u32x) (l_bin2asc[(i).s0], l_bin2asc[(i).s1])
+#elif VECT_SIZE == 4
+#define uint_to_hex_lower8_le(i) (u32x) (l_bin2asc[(i).s0], l_bin2asc[(i).s1], l_bin2asc[(i).s2], l_bin2asc[(i).s3])
+#elif VECT_SIZE == 8
+#define uint_to_hex_lower8_le(i) (u32x) (l_bin2asc[(i).s0], l_bin2asc[(i).s1], l_bin2asc[(i).s2], l_bin2asc[(i).s3], l_bin2asc[(i).s4], l_bin2asc[(i).s5], l_bin2asc[(i).s6], l_bin2asc[(i).s7])
+#elif VECT_SIZE == 16
+#define uint_to_hex_lower8_le(i) (u32x) (l_bin2asc[(i).s0], l_bin2asc[(i).s1], l_bin2asc[(i).s2], l_bin2asc[(i).s3], l_bin2asc[(i).s4], l_bin2asc[(i).s5], l_bin2asc[(i).s6], l_bin2asc[(i).s7], l_bin2asc[(i).s8], l_bin2asc[(i).s9], l_bin2asc[(i).sa], l_bin2asc[(i).sb], l_bin2asc[(i).sc], l_bin2asc[(i).sd], l_bin2asc[(i).se], l_bin2asc[(i).sf])
+#endif
+
+__kernel void m19500_mxx (KERN_ATTR_RULES_ESALT (devise_hash_t))
+{
+  /**
+   * modifier
+   */
+
+  const u64 gid = get_global_id (0);
+  const u64 lid = get_local_id (0);
+  const u64 lsz = get_local_size (0);
+
+  /**
+   * bin2asc table
+   */
+
+  __local u32 l_bin2asc[256];
+
+  for (u32 i = lid; i < 256; i += lsz)
+  {
+    const u32 i0 = (i >> 0) & 15;
+    const u32 i1 = (i >> 4) & 15;
+
+    l_bin2asc[i] = ((i0 < 10) ? '0' + i0 : 'a' - 10 + i0) << 0
+                 | ((i1 < 10) ? '0' + i1 : 'a' - 10 + i1) << 8;
+  }
+
+  barrier (CLK_LOCAL_MEM_FENCE);
+
+  if (gid >= gid_max) return;
+
+  /**
+   * base
+   */
+
+  COPY_PW (pws[gid]);
+
+  const int salt_len = esalt_bufs[digests_offset].salt_len;
+
+  const int site_key_len = esalt_bufs[digests_offset].site_key_len;
+
+  u32 s[64] = { 0 };
+  u32 k[64] = { 0 };
+
+  const u32 glue[16] = { 0x2d2d0000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
+
+  for (int i = 0, idx = 0; i < salt_len; i += 4, idx += 1)
+  {
+    s[idx] = swap32_S (esalt_bufs[salt_pos].salt_buf[idx]);
+  }
+
+  for (int i = 0, idx = 0; i < site_key_len; i += 4, idx += 1)
+  {
+    k[idx] = swap32_S (esalt_bufs[salt_pos].site_key_buf[idx]);
+  }
+
+  // precompute some stuff
+
+  sha1_ctx_t ctx0;
+
+  sha1_init (&ctx0);
+
+  sha1_update (&ctx0, k, site_key_len);
+  sha1_update (&ctx0, glue, 2);
+  sha1_update (&ctx0, s, salt_len);
+  sha1_update (&ctx0, glue, 2);
+
+  /**
+   * loop
+   */
+
+  for (u32 il_pos = 0; il_pos < il_cnt; il_pos++)
+  {
+    pw_t tmp = PASTE_PW;
+
+    tmp.pw_len = apply_rules (rules_buf[il_pos].cmds, tmp.i, tmp.pw_len);
+
+    sha1_ctx_t ctx = ctx0;
+
+    sha1_update_swap (&ctx, tmp.i, tmp.pw_len);
+    sha1_update      (&ctx, glue, 2);
+    sha1_update      (&ctx, k, site_key_len);
+
+    sha1_final (&ctx);
+
+    for (u32 iter = 0; iter < 9; iter++)
+    {
+      const u32 a = ctx.h[0];
+      const u32 b = ctx.h[1];
+      const u32 c = ctx.h[2];
+      const u32 d = ctx.h[3];
+      const u32 e = ctx.h[4];
+
+      sha1_init (&ctx);
+
+      ctx.w0[0] = uint_to_hex_lower8_le ((a >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((a >> 24) & 255) << 16;
+      ctx.w0[1] = uint_to_hex_lower8_le ((a >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((a >>  8) & 255) << 16;
+      ctx.w0[2] = uint_to_hex_lower8_le ((b >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((b >> 24) & 255) << 16;
+      ctx.w0[3] = uint_to_hex_lower8_le ((b >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((b >>  8) & 255) << 16;
+      ctx.w1[0] = uint_to_hex_lower8_le ((c >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((c >> 24) & 255) << 16;
+      ctx.w1[1] = uint_to_hex_lower8_le ((c >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((c >>  8) & 255) << 16;
+      ctx.w1[2] = uint_to_hex_lower8_le ((d >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((d >> 24) & 255) << 16;
+      ctx.w1[3] = uint_to_hex_lower8_le ((d >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((d >>  8) & 255) << 16;
+      ctx.w2[0] = uint_to_hex_lower8_le ((e >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((e >> 24) & 255) << 16;
+      ctx.w2[1] = uint_to_hex_lower8_le ((e >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((e >>  8) & 255) << 16;
+      ctx.w2[2] = glue[0];
+
+      ctx.len = 40 + 2;
+
+      sha1_update      (&ctx, s, salt_len);
+      sha1_update      (&ctx, glue, 2);
+      sha1_update_swap (&ctx, tmp.i, tmp.pw_len);
+      sha1_update      (&ctx, glue, 2);
+      sha1_update      (&ctx, k, site_key_len);
+
+      sha1_final (&ctx);
+    }
+
+    const u32 r0 = ctx.h[DGST_R0];
+    const u32 r1 = ctx.h[DGST_R1];
+    const u32 r2 = ctx.h[DGST_R2];
+    const u32 r3 = ctx.h[DGST_R3];
+
+    COMPARE_M_SCALAR (r0, r1, r2, r3);
+  }
+}
+
+__kernel void m19500_sxx (KERN_ATTR_RULES_ESALT (devise_hash_t))
+{
+  /**
+   * modifier
+   */
+
+  const u64 lid = get_local_id (0);
+  const u64 gid = get_global_id (0);
+  const u64 lsz = get_local_size (0);
+
+  /**
+   * bin2asc table
+   */
+
+  __local u32 l_bin2asc[256];
+
+  for (u32 i = lid; i < 256; i += lsz)
+  {
+    const u32 i0 = (i >> 0) & 15;
+    const u32 i1 = (i >> 4) & 15;
+
+    l_bin2asc[i] = ((i0 < 10) ? '0' + i0 : 'a' - 10 + i0) << 0
+                 | ((i1 < 10) ? '0' + i1 : 'a' - 10 + i1) << 8;
+  }
+
+  barrier (CLK_LOCAL_MEM_FENCE);
+
+  if (gid >= gid_max) return;
+
+  /**
+   * digest
+   */
+
+  const u32 search[4] =
+  {
+    digests_buf[digests_offset].digest_buf[DGST_R0],
+    digests_buf[digests_offset].digest_buf[DGST_R1],
+    digests_buf[digests_offset].digest_buf[DGST_R2],
+    digests_buf[digests_offset].digest_buf[DGST_R3]
+  };
+
+  /**
+   * base
+   */
+
+  COPY_PW (pws[gid]);
+
+  const int salt_len = esalt_bufs[digests_offset].salt_len;
+
+  const int site_key_len = esalt_bufs[digests_offset].site_key_len;
+
+  u32 s[64] = { 0 };
+  u32 k[64] = { 0 };
+
+  const u32 glue[16] = { 0x2d2d0000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
+
+  for (int i = 0, idx = 0; i < salt_len; i += 4, idx += 1)
+  {
+    s[idx] = swap32_S (esalt_bufs[salt_pos].salt_buf[idx]);
+  }
+
+  for (int i = 0, idx = 0; i < site_key_len; i += 4, idx += 1)
+  {
+    k[idx] = swap32_S (esalt_bufs[salt_pos].site_key_buf[idx]);
+  }
+
+  // precompute some stuff
+
+  sha1_ctx_t ctx0;
+
+  sha1_init (&ctx0);
+
+  sha1_update (&ctx0, k, site_key_len);
+  sha1_update (&ctx0, glue, 2);
+  sha1_update (&ctx0, s, salt_len);
+  sha1_update (&ctx0, glue, 2);
+
+  /**
+   * loop
+   */
+
+  for (u32 il_pos = 0; il_pos < il_cnt; il_pos++)
+  {
+    pw_t tmp = PASTE_PW;
+
+    tmp.pw_len = apply_rules (rules_buf[il_pos].cmds, tmp.i, tmp.pw_len);
+
+    sha1_ctx_t ctx = ctx0;
+
+    sha1_update_swap (&ctx, tmp.i, tmp.pw_len);
+    sha1_update      (&ctx, glue, 2);
+    sha1_update      (&ctx, k, site_key_len);
+
+    sha1_final (&ctx);
+
+    for (u32 iter = 0; iter < 9; iter++)
+    {
+      const u32 a = ctx.h[0];
+      const u32 b = ctx.h[1];
+      const u32 c = ctx.h[2];
+      const u32 d = ctx.h[3];
+      const u32 e = ctx.h[4];
+
+      sha1_init (&ctx);
+
+      ctx.w0[0] = uint_to_hex_lower8_le ((a >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((a >> 24) & 255) << 16;
+      ctx.w0[1] = uint_to_hex_lower8_le ((a >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((a >>  8) & 255) << 16;
+      ctx.w0[2] = uint_to_hex_lower8_le ((b >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((b >> 24) & 255) << 16;
+      ctx.w0[3] = uint_to_hex_lower8_le ((b >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((b >>  8) & 255) << 16;
+      ctx.w1[0] = uint_to_hex_lower8_le ((c >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((c >> 24) & 255) << 16;
+      ctx.w1[1] = uint_to_hex_lower8_le ((c >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((c >>  8) & 255) << 16;
+      ctx.w1[2] = uint_to_hex_lower8_le ((d >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((d >> 24) & 255) << 16;
+      ctx.w1[3] = uint_to_hex_lower8_le ((d >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((d >>  8) & 255) << 16;
+      ctx.w2[0] = uint_to_hex_lower8_le ((e >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((e >> 24) & 255) << 16;
+      ctx.w2[1] = uint_to_hex_lower8_le ((e >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((e >>  8) & 255) << 16;
+      ctx.w2[2] = glue[0];
+
+      ctx.len = 40 + 2;
+
+      sha1_update      (&ctx, s, salt_len);
+      sha1_update      (&ctx, glue, 2);
+      sha1_update_swap (&ctx, tmp.i, tmp.pw_len);
+      sha1_update      (&ctx, glue, 2);
+      sha1_update      (&ctx, k, site_key_len);
+
+      sha1_final (&ctx);
+    }
+
+    const u32 r0 = ctx.h[DGST_R0];
+    const u32 r1 = ctx.h[DGST_R1];
+    const u32 r2 = ctx.h[DGST_R2];
+    const u32 r3 = ctx.h[DGST_R3];
+
+    COMPARE_S_SCALAR (r0, r1, r2, r3);
+  }
+}
+
diff --git a/OpenCL/m19500_a1-pure.cl b/OpenCL/m19500_a1-pure.cl
new file mode 100644
index 000000000..b8908ca62
--- /dev/null
+++ b/OpenCL/m19500_a1-pure.cl
@@ -0,0 +1,310 @@
+/**
+ * Author......: See docs/credits.txt
+ * License.....: MIT
+ */
+
+//#define NEW_SIMD_CODE
+
+#include "inc_vendor.cl"
+#include "inc_hash_constants.h"
+#include "inc_hash_functions.cl"
+#include "inc_types.cl"
+#include "inc_common.cl"
+#include "inc_scalar.cl"
+#include "inc_hash_sha1.cl"
+
+typedef struct devise_hash
+{
+  u32 salt_buf[64];
+  int salt_len;
+
+  u32 site_key_buf[64];
+  int site_key_len;
+
+} devise_hash_t;
+
+#if   VECT_SIZE == 1
+#define uint_to_hex_lower8_le(i) (u32x) (l_bin2asc[(i)])
+#elif VECT_SIZE == 2
+#define uint_to_hex_lower8_le(i) (u32x) (l_bin2asc[(i).s0], l_bin2asc[(i).s1])
+#elif VECT_SIZE == 4
+#define uint_to_hex_lower8_le(i) (u32x) (l_bin2asc[(i).s0], l_bin2asc[(i).s1], l_bin2asc[(i).s2], l_bin2asc[(i).s3])
+#elif VECT_SIZE == 8
+#define uint_to_hex_lower8_le(i) (u32x) (l_bin2asc[(i).s0], l_bin2asc[(i).s1], l_bin2asc[(i).s2], l_bin2asc[(i).s3], l_bin2asc[(i).s4], l_bin2asc[(i).s5], l_bin2asc[(i).s6], l_bin2asc[(i).s7])
+#elif VECT_SIZE == 16
+#define uint_to_hex_lower8_le(i) (u32x) (l_bin2asc[(i).s0], l_bin2asc[(i).s1], l_bin2asc[(i).s2], l_bin2asc[(i).s3], l_bin2asc[(i).s4], l_bin2asc[(i).s5], l_bin2asc[(i).s6], l_bin2asc[(i).s7], l_bin2asc[(i).s8], l_bin2asc[(i).s9], l_bin2asc[(i).sa], l_bin2asc[(i).sb], l_bin2asc[(i).sc], l_bin2asc[(i).sd], l_bin2asc[(i).se], l_bin2asc[(i).sf])
+#endif
+
+__kernel void m19500_mxx (KERN_ATTR_ESALT (devise_hash_t))
+{
+  /**
+   * modifier
+   */
+
+  const u64 lid = get_local_id (0);
+  const u64 gid = get_global_id (0);
+  const u64 lsz = get_local_size (0);
+
+  /**
+   * bin2asc table
+   */
+
+  __local u32 l_bin2asc[256];
+
+  for (u32 i = lid; i < 256; i += lsz)
+  {
+    const u32 i0 = (i >> 0) & 15;
+    const u32 i1 = (i >> 4) & 15;
+
+    l_bin2asc[i] = ((i0 < 10) ? '0' + i0 : 'a' - 10 + i0) << 0
+                 | ((i1 < 10) ? '0' + i1 : 'a' - 10 + i1) << 8;
+  }
+
+  barrier (CLK_LOCAL_MEM_FENCE);
+
+  if (gid >= gid_max) return;
+
+  /**
+   * base
+   */
+
+  const int salt_len = esalt_bufs[digests_offset].salt_len;
+
+  const int site_key_len = esalt_bufs[digests_offset].site_key_len;
+
+  u32 s[64] = { 0 };
+  u32 k[64] = { 0 };
+
+  const u32 glue[16] = { 0x2d2d0000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
+
+  for (int i = 0, idx = 0; i < salt_len; i += 4, idx += 1)
+  {
+    s[idx] = swap32_S (esalt_bufs[salt_pos].salt_buf[idx]);
+  }
+
+  for (int i = 0, idx = 0; i < site_key_len; i += 4, idx += 1)
+  {
+    k[idx] = swap32_S (esalt_bufs[salt_pos].site_key_buf[idx]);
+  }
+
+  // precompute some stuff
+
+  sha1_ctx_t ctx0;
+
+  sha1_init (&ctx0);
+
+  sha1_update             (&ctx0, k, site_key_len);
+  sha1_update             (&ctx0, glue, 2);
+  sha1_update             (&ctx0, s, salt_len);
+  sha1_update             (&ctx0, glue, 2);
+  sha1_update_global_swap (&ctx0, pws[gid].i, pws[gid].pw_len);
+
+  /**
+   * loop
+   */
+
+  for (u32 il_pos = 0; il_pos < il_cnt; il_pos++)
+  {
+    sha1_ctx_t ctx = ctx0;
+
+    sha1_update_global_swap (&ctx, combs_buf[il_pos].i, combs_buf[il_pos].pw_len);
+    sha1_update             (&ctx, glue, 2);
+    sha1_update             (&ctx, k, site_key_len);
+
+    sha1_final (&ctx);
+
+    for (u32 iter = 0; iter < 9; iter++)
+    {
+      const u32 a = ctx.h[0];
+      const u32 b = ctx.h[1];
+      const u32 c = ctx.h[2];
+      const u32 d = ctx.h[3];
+      const u32 e = ctx.h[4];
+
+      sha1_init (&ctx);
+
+      ctx.w0[0] = uint_to_hex_lower8_le ((a >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((a >> 24) & 255) << 16;
+      ctx.w0[1] = uint_to_hex_lower8_le ((a >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((a >>  8) & 255) << 16;
+      ctx.w0[2] = uint_to_hex_lower8_le ((b >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((b >> 24) & 255) << 16;
+      ctx.w0[3] = uint_to_hex_lower8_le ((b >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((b >>  8) & 255) << 16;
+      ctx.w1[0] = uint_to_hex_lower8_le ((c >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((c >> 24) & 255) << 16;
+      ctx.w1[1] = uint_to_hex_lower8_le ((c >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((c >>  8) & 255) << 16;
+      ctx.w1[2] = uint_to_hex_lower8_le ((d >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((d >> 24) & 255) << 16;
+      ctx.w1[3] = uint_to_hex_lower8_le ((d >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((d >>  8) & 255) << 16;
+      ctx.w2[0] = uint_to_hex_lower8_le ((e >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((e >> 24) & 255) << 16;
+      ctx.w2[1] = uint_to_hex_lower8_le ((e >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((e >>  8) & 255) << 16;
+      ctx.w2[2] = glue[0];
+
+      ctx.len = 40 + 2;
+
+      sha1_update (&ctx, s, salt_len);
+      sha1_update (&ctx, glue, 2);
+      sha1_update_global_swap (&ctx, pws[gid].i, pws[gid].pw_len);
+      sha1_update_global_swap (&ctx, combs_buf[il_pos].i, combs_buf[il_pos].pw_len);
+      sha1_update (&ctx, glue, 2);
+      sha1_update (&ctx, k, site_key_len);
+
+      sha1_final (&ctx);
+    }
+
+    const u32 r0 = ctx.h[DGST_R0];
+    const u32 r1 = ctx.h[DGST_R1];
+    const u32 r2 = ctx.h[DGST_R2];
+    const u32 r3 = ctx.h[DGST_R3];
+
+    COMPARE_M_SCALAR (r0, r1, r2, r3);
+  }
+}
+
+__kernel void m19500_sxx (KERN_ATTR_ESALT (devise_hash_t))
+{
+  /**
+   * modifier
+   */
+
+  const u64 lid = get_local_id (0);
+  const u64 gid = get_global_id (0);
+  const u64 lsz = get_local_size (0);
+
+  /**
+   * bin2asc table
+   */
+
+  __local u32 l_bin2asc[256];
+
+  for (u32 i = lid; i < 256; i += lsz)
+  {
+    const u32 i0 = (i >> 0) & 15;
+    const u32 i1 = (i >> 4) & 15;
+
+    l_bin2asc[i] = ((i0 < 10) ? '0' + i0 : 'a' - 10 + i0) << 0
+                 | ((i1 < 10) ? '0' + i1 : 'a' - 10 + i1) << 8;
+  }
+
+  barrier (CLK_LOCAL_MEM_FENCE);
+
+  if (gid >= gid_max) return;
+
+  /**
+   * digest
+   */
+
+  const u32 search[4] =
+  {
+    digests_buf[digests_offset].digest_buf[DGST_R0],
+    digests_buf[digests_offset].digest_buf[DGST_R1],
+    digests_buf[digests_offset].digest_buf[DGST_R2],
+    digests_buf[digests_offset].digest_buf[DGST_R3]
+  };
+
+  /**
+   * base
+   */
+
+  const int salt_len = esalt_bufs[digests_offset].salt_len;
+
+  const int site_key_len = esalt_bufs[digests_offset].site_key_len;
+
+  u32 s[64] = { 0 };
+  u32 k[64] = { 0 };
+
+  const u32 glue[16] = { 0x2d2d0000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
+
+  for (int i = 0, idx = 0; i < salt_len; i += 4, idx += 1)
+  {
+    s[idx] = swap32_S (esalt_bufs[salt_pos].salt_buf[idx]);
+  }
+
+  for (int i = 0, idx = 0; i < site_key_len; i += 4, idx += 1)
+  {
+    k[idx] = swap32_S (esalt_bufs[salt_pos].site_key_buf[idx]);
+  }
+
+  // precompute some stuff
+
+  sha1_ctx_t ctx0;
+
+  sha1_init (&ctx0);
+
+  sha1_update             (&ctx0, k, site_key_len);
+  sha1_update             (&ctx0, glue, 2);
+  sha1_update             (&ctx0, s, salt_len);
+  sha1_update             (&ctx0, glue, 2);
+  sha1_update_global_swap (&ctx0, pws[gid].i, pws[gid].pw_len);
+
+  /**
+   * loop
+   */
+
+  for (u32 il_pos = 0; il_pos < il_cnt; il_pos++)
+  {
+    sha1_ctx_t ctx = ctx0;
+
+    sha1_update_global_swap (&ctx, combs_buf[il_pos].i, combs_buf[il_pos].pw_len);
+    sha1_update             (&ctx, glue, 2);
+    sha1_update             (&ctx, k, site_key_len);
+
+    sha1_final (&ctx);
+
+    for (u32 iter = 0; iter < 9; iter++)
+    {
+      const u32 a = ctx.h[0];
+      const u32 b = ctx.h[1];
+      const u32 c = ctx.h[2];
+      const u32 d = ctx.h[3];
+      const u32 e = ctx.h[4];
+
+      sha1_init (&ctx);
+
+      ctx.w0[0] = uint_to_hex_lower8_le ((a >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((a >> 24) & 255) << 16;
+      ctx.w0[1] = uint_to_hex_lower8_le ((a >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((a >>  8) & 255) << 16;
+      ctx.w0[2] = uint_to_hex_lower8_le ((b >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((b >> 24) & 255) << 16;
+      ctx.w0[3] = uint_to_hex_lower8_le ((b >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((b >>  8) & 255) << 16;
+      ctx.w1[0] = uint_to_hex_lower8_le ((c >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((c >> 24) & 255) << 16;
+      ctx.w1[1] = uint_to_hex_lower8_le ((c >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((c >>  8) & 255) << 16;
+      ctx.w1[2] = uint_to_hex_lower8_le ((d >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((d >> 24) & 255) << 16;
+      ctx.w1[3] = uint_to_hex_lower8_le ((d >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((d >>  8) & 255) << 16;
+      ctx.w2[0] = uint_to_hex_lower8_le ((e >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((e >> 24) & 255) << 16;
+      ctx.w2[1] = uint_to_hex_lower8_le ((e >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((e >>  8) & 255) << 16;
+      ctx.w2[2] = glue[0];
+
+      ctx.len = 40 + 2;
+
+      sha1_update (&ctx, s, salt_len);
+      sha1_update (&ctx, glue, 2);
+      sha1_update_global_swap (&ctx, pws[gid].i, pws[gid].pw_len);
+      sha1_update_global_swap (&ctx, combs_buf[il_pos].i, combs_buf[il_pos].pw_len);
+      sha1_update (&ctx, glue, 2);
+      sha1_update (&ctx, k, site_key_len);
+
+      sha1_final (&ctx);
+    }
+
+    const u32 r0 = ctx.h[DGST_R0];
+    const u32 r1 = ctx.h[DGST_R1];
+    const u32 r2 = ctx.h[DGST_R2];
+    const u32 r3 = ctx.h[DGST_R3];
+
+    COMPARE_S_SCALAR (r0, r1, r2, r3);
+  }
+}
diff --git a/OpenCL/m19500_a3-pure.cl b/OpenCL/m19500_a3-pure.cl
new file mode 100644
index 000000000..fb1176b35
--- /dev/null
+++ b/OpenCL/m19500_a3-pure.cl
@@ -0,0 +1,340 @@
+/**
+ * Author......: See docs/credits.txt
+ * License.....: MIT
+ */
+
+//#define NEW_SIMD_CODE
+
+#include "inc_vendor.cl"
+#include "inc_hash_constants.h"
+#include "inc_hash_functions.cl"
+#include "inc_types.cl"
+#include "inc_common.cl"
+#include "inc_simd.cl"
+#include "inc_hash_sha1.cl"
+
+typedef struct devise_hash
+{
+  u32 salt_buf[64];
+  int salt_len;
+
+  u32 site_key_buf[64];
+  int site_key_len;
+
+} devise_hash_t;
+
+#if   VECT_SIZE == 1
+#define uint_to_hex_lower8_le(i) (u32x) (l_bin2asc[(i)])
+#elif VECT_SIZE == 2
+#define uint_to_hex_lower8_le(i) (u32x) (l_bin2asc[(i).s0], l_bin2asc[(i).s1])
+#elif VECT_SIZE == 4
+#define uint_to_hex_lower8_le(i) (u32x) (l_bin2asc[(i).s0], l_bin2asc[(i).s1], l_bin2asc[(i).s2], l_bin2asc[(i).s3])
+#elif VECT_SIZE == 8
+#define uint_to_hex_lower8_le(i) (u32x) (l_bin2asc[(i).s0], l_bin2asc[(i).s1], l_bin2asc[(i).s2], l_bin2asc[(i).s3], l_bin2asc[(i).s4], l_bin2asc[(i).s5], l_bin2asc[(i).s6], l_bin2asc[(i).s7])
+#elif VECT_SIZE == 16
+#define uint_to_hex_lower8_le(i) (u32x) (l_bin2asc[(i).s0], l_bin2asc[(i).s1], l_bin2asc[(i).s2], l_bin2asc[(i).s3], l_bin2asc[(i).s4], l_bin2asc[(i).s5], l_bin2asc[(i).s6], l_bin2asc[(i).s7], l_bin2asc[(i).s8], l_bin2asc[(i).s9], l_bin2asc[(i).sa], l_bin2asc[(i).sb], l_bin2asc[(i).sc], l_bin2asc[(i).sd], l_bin2asc[(i).se], l_bin2asc[(i).sf])
+#endif
+
+__kernel void m19500_mxx (KERN_ATTR_VECTOR_ESALT (devise_hash_t))
+{
+  /**
+   * modifier
+   */
+
+  const u64 lid = get_local_id (0);
+  const u64 gid = get_global_id (0);
+  const u64 lsz = get_local_size (0);
+
+  /**
+   * bin2asc table
+   */
+
+  __local u32 l_bin2asc[256];
+
+  for (u32 i = lid; i < 256; i += lsz)
+  {
+    const u32 i0 = (i >> 0) & 15;
+    const u32 i1 = (i >> 4) & 15;
+
+    l_bin2asc[i] = ((i0 < 10) ? '0' + i0 : 'a' - 10 + i0) << 0
+                 | ((i1 < 10) ? '0' + i1 : 'a' - 10 + i1) << 8;
+  }
+
+  barrier (CLK_LOCAL_MEM_FENCE);
+
+  if (gid >= gid_max) return;
+
+  /**
+   * base
+   */
+
+  const u32 pw_len = pws[gid].pw_len;
+
+  u32x w[64] = { 0 };
+
+  for (int i = 0, idx = 0; i < pw_len; i += 4, idx += 1)
+  {
+    w[idx] = pws[gid].i[idx];
+  }
+
+  const int salt_len = esalt_bufs[digests_offset].salt_len;
+
+  const int site_key_len = esalt_bufs[digests_offset].site_key_len;
+
+  u32 s[64] = { 0 };
+  u32 k[64] = { 0 };
+
+  const u32 glue[16] = { 0x2d2d0000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
+
+  for (int i = 0, idx = 0; i < salt_len; i += 4, idx += 1)
+  {
+    s[idx] = swap32_S (esalt_bufs[salt_pos].salt_buf[idx]);
+  }
+
+  for (int i = 0, idx = 0; i < site_key_len; i += 4, idx += 1)
+  {
+    k[idx] = swap32_S (esalt_bufs[salt_pos].site_key_buf[idx]);
+  }
+
+  // precompute some stuff
+
+  sha1_ctx_t ctx0;
+
+  sha1_init (&ctx0);
+
+  sha1_update (&ctx0, k, site_key_len);
+  sha1_update (&ctx0, glue, 2);
+  sha1_update (&ctx0, s, salt_len);
+  sha1_update (&ctx0, glue, 2);
+
+  /**
+   * loop
+   */
+
+  u32x w0l = w[0];
+
+  for (u32 il_pos = 0; il_pos < il_cnt; il_pos += VECT_SIZE)
+  {
+    const u32x w0r = words_buf_r[il_pos / VECT_SIZE];
+
+    const u32x w0 = w0l | w0r;
+
+    w[0] = w0;
+
+    sha1_ctx_t ctx = ctx0;
+
+    sha1_update (&ctx, w, pw_len);
+    sha1_update (&ctx, glue, 2);
+    sha1_update (&ctx, k, site_key_len);
+
+    sha1_final (&ctx);
+
+    for (u32 iter = 0; iter < 9; iter++)
+    {
+      const u32 a = ctx.h[0];
+      const u32 b = ctx.h[1];
+      const u32 c = ctx.h[2];
+      const u32 d = ctx.h[3];
+      const u32 e = ctx.h[4];
+
+      sha1_init (&ctx);
+
+      ctx.w0[0] = uint_to_hex_lower8_le ((a >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((a >> 24) & 255) << 16;
+      ctx.w0[1] = uint_to_hex_lower8_le ((a >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((a >>  8) & 255) << 16;
+      ctx.w0[2] = uint_to_hex_lower8_le ((b >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((b >> 24) & 255) << 16;
+      ctx.w0[3] = uint_to_hex_lower8_le ((b >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((b >>  8) & 255) << 16;
+      ctx.w1[0] = uint_to_hex_lower8_le ((c >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((c >> 24) & 255) << 16;
+      ctx.w1[1] = uint_to_hex_lower8_le ((c >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((c >>  8) & 255) << 16;
+      ctx.w1[2] = uint_to_hex_lower8_le ((d >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((d >> 24) & 255) << 16;
+      ctx.w1[3] = uint_to_hex_lower8_le ((d >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((d >>  8) & 255) << 16;
+      ctx.w2[0] = uint_to_hex_lower8_le ((e >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((e >> 24) & 255) << 16;
+      ctx.w2[1] = uint_to_hex_lower8_le ((e >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((e >>  8) & 255) << 16;
+      ctx.w2[2] = glue[0];
+
+      ctx.len = 40 + 2;
+
+      sha1_update_vector (&ctx, s, salt_len);
+      sha1_update_vector (&ctx, glue, 2);
+      sha1_update_vector (&ctx, w, pw_len);
+      sha1_update_vector (&ctx, glue, 2);
+      sha1_update_vector (&ctx, k, site_key_len);
+
+      sha1_final (&ctx);
+    }
+
+    const u32 r0 = ctx.h[DGST_R0];
+    const u32 r1 = ctx.h[DGST_R1];
+    const u32 r2 = ctx.h[DGST_R2];
+    const u32 r3 = ctx.h[DGST_R3];
+
+    COMPARE_M_SIMD (r0, r1, r2, r3);
+  }
+}
+
+__kernel void m19500_sxx (KERN_ATTR_VECTOR_ESALT (devise_hash_t))
+{
+  /**
+   * modifier
+   */
+
+  const u64 lid = get_local_id (0);
+  const u64 gid = get_global_id (0);
+  const u64 lsz = get_local_size (0);
+
+  /**
+   * bin2asc table
+   */
+
+  __local u32 l_bin2asc[256];
+
+  for (u32 i = lid; i < 256; i += lsz)
+  {
+    const u32 i0 = (i >> 0) & 15;
+    const u32 i1 = (i >> 4) & 15;
+
+    l_bin2asc[i] = ((i0 < 10) ? '0' + i0 : 'a' - 10 + i0) << 0
+                 | ((i1 < 10) ? '0' + i1 : 'a' - 10 + i1) << 8;
+  }
+
+  barrier (CLK_LOCAL_MEM_FENCE);
+
+  if (gid >= gid_max) return;
+
+  /**
+   * digest
+   */
+
+  const u32 search[4] =
+  {
+    digests_buf[digests_offset].digest_buf[DGST_R0],
+    digests_buf[digests_offset].digest_buf[DGST_R1],
+    digests_buf[digests_offset].digest_buf[DGST_R2],
+    digests_buf[digests_offset].digest_buf[DGST_R3]
+  };
+
+  /**
+   * base
+   */
+
+  const u32 pw_len = pws[gid].pw_len;
+
+  u32x w[64] = { 0 };
+
+  for (int i = 0, idx = 0; i < pw_len; i += 4, idx += 1)
+  {
+    w[idx] = pws[gid].i[idx];
+  }
+
+  const int salt_len = esalt_bufs[digests_offset].salt_len;
+
+  const int site_key_len = esalt_bufs[digests_offset].site_key_len;
+
+  u32 s[64] = { 0 };
+  u32 k[64] = { 0 };
+
+  const u32 glue[16] = { 0x2d2d0000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
+
+  for (int i = 0, idx = 0; i < salt_len; i += 4, idx += 1)
+  {
+    s[idx] = swap32_S (esalt_bufs[salt_pos].salt_buf[idx]);
+  }
+
+  for (int i = 0, idx = 0; i < site_key_len; i += 4, idx += 1)
+  {
+    k[idx] = swap32_S (esalt_bufs[salt_pos].site_key_buf[idx]);
+  }
+
+  // precompute some stuff
+
+  sha1_ctx_t ctx0;
+
+  sha1_init (&ctx0);
+
+  sha1_update (&ctx0, k, site_key_len);
+  sha1_update (&ctx0, glue, 2);
+  sha1_update (&ctx0, s, salt_len);
+  sha1_update (&ctx0, glue, 2);
+
+  /**
+   * loop
+   */
+
+  u32x w0l = w[0];
+
+  for (u32 il_pos = 0; il_pos < il_cnt; il_pos += VECT_SIZE)
+  {
+    const u32x w0r = words_buf_r[il_pos / VECT_SIZE];
+
+    const u32x w0 = w0l | w0r;
+
+    w[0] = w0;
+
+    sha1_ctx_t ctx = ctx0;
+
+    sha1_update (&ctx, w, pw_len);
+    sha1_update (&ctx, glue, 2);
+    sha1_update (&ctx, k, site_key_len);
+
+    sha1_final (&ctx);
+
+    for (u32 iter = 0; iter < 9; iter++)
+    {
+      const u32 a = ctx.h[0];
+      const u32 b = ctx.h[1];
+      const u32 c = ctx.h[2];
+      const u32 d = ctx.h[3];
+      const u32 e = ctx.h[4];
+
+      sha1_init (&ctx);
+
+      ctx.w0[0] = uint_to_hex_lower8_le ((a >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((a >> 24) & 255) << 16;
+      ctx.w0[1] = uint_to_hex_lower8_le ((a >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((a >>  8) & 255) << 16;
+      ctx.w0[2] = uint_to_hex_lower8_le ((b >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((b >> 24) & 255) << 16;
+      ctx.w0[3] = uint_to_hex_lower8_le ((b >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((b >>  8) & 255) << 16;
+      ctx.w1[0] = uint_to_hex_lower8_le ((c >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((c >> 24) & 255) << 16;
+      ctx.w1[1] = uint_to_hex_lower8_le ((c >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((c >>  8) & 255) << 16;
+      ctx.w1[2] = uint_to_hex_lower8_le ((d >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((d >> 24) & 255) << 16;
+      ctx.w1[3] = uint_to_hex_lower8_le ((d >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((d >>  8) & 255) << 16;
+      ctx.w2[0] = uint_to_hex_lower8_le ((e >> 16) & 255) <<  0
+                | uint_to_hex_lower8_le ((e >> 24) & 255) << 16;
+      ctx.w2[1] = uint_to_hex_lower8_le ((e >>  0) & 255) <<  0
+                | uint_to_hex_lower8_le ((e >>  8) & 255) << 16;
+      ctx.w2[2] = glue[0];
+
+      ctx.len = 40 + 2;
+
+      sha1_update (&ctx, s, salt_len);
+      sha1_update (&ctx, glue, 2);
+      sha1_update (&ctx, w, pw_len);
+      sha1_update (&ctx, glue, 2);
+      sha1_update (&ctx, k, site_key_len);
+
+      sha1_final (&ctx);
+    }
+
+    const u32 r0 = ctx.h[DGST_R0];
+    const u32 r1 = ctx.h[DGST_R1];
+    const u32 r2 = ctx.h[DGST_R2];
+    const u32 r3 = ctx.h[DGST_R3];
+
+    COMPARE_S_SIMD (r0, r1, r2, r3);
+  }
+}
diff --git a/docs/changes.txt b/docs/changes.txt
index afd5e52f4..0e7035710 100644
--- a/docs/changes.txt
+++ b/docs/changes.txt
@@ -23,6 +23,7 @@
 - Added hash-mode: Kerberos 5 TGS-REP etype 18 (AES256-CTS-HMAC-SHA1-96)
 - Added hash-mode: sha1(md5(md5($pass)))
 - Added hash-mode: sha1($salt1.$pass.$salt2)
+- Added hash-mode: Ruby on Rails Restful-Authentication
 
 ##
 ## Bugs
diff --git a/src/modules/module_19500.c b/src/modules/module_19500.c
new file mode 100644
index 000000000..b9b6e3e21
--- /dev/null
+++ b/src/modules/module_19500.c
@@ -0,0 +1,255 @@
+/**
+ * Author......: See docs/credits.txt
+ * License.....: MIT
+ */
+
+#include "common.h"
+#include "types.h"
+#include "modules.h"
+#include "bitops.h"
+#include "convert.h"
+#include "shared.h"
+#include "inc_hash_constants.h"
+
+static const u32   ATTACK_EXEC    = ATTACK_EXEC_INSIDE_KERNEL;
+static const u32   DGST_POS0      = 3;
+static const u32   DGST_POS1      = 4;
+static const u32   DGST_POS2      = 2;
+static const u32   DGST_POS3      = 1;
+static const u32   DGST_SIZE      = DGST_SIZE_4_5;
+static const u32   HASH_CATEGORY  = HASH_CATEGORY_RAW_HASH_SALTED;
+static const char *HASH_NAME      = "Ruby on Rails Restful-Authentication";
+static const u64   KERN_TYPE      = 19500;
+static const u32   OPTI_TYPE      = OPTI_TYPE_ZERO_BYTE
+                                  | OPTI_TYPE_RAW_HASH;
+static const u64   OPTS_TYPE      = OPTS_TYPE_PT_GENERATE_BE;
+static const u32   SALT_TYPE      = SALT_TYPE_GENERIC;
+static const char *ST_PASS        = "hashcat";
+static const char *ST_HASH        = "d7d5ea3e09391da412b653ae6c8d7431ec273ea2:238769868762:8962783556527653675";
+
+u32         module_attack_exec    (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ATTACK_EXEC;     }
+u32         module_dgst_pos0      (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS0;       }
+u32         module_dgst_pos1      (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS1;       }
+u32         module_dgst_pos2      (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS2;       }
+u32         module_dgst_pos3      (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS3;       }
+u32         module_dgst_size      (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_SIZE;       }
+u32         module_hash_category  (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return HASH_CATEGORY;   }
+const char *module_hash_name      (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return HASH_NAME;       }
+u64         module_kern_type      (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return KERN_TYPE;       }
+u32         module_opti_type      (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return OPTI_TYPE;       }
+u64         module_opts_type      (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return OPTS_TYPE;       }
+u32         module_salt_type      (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return SALT_TYPE;       }
+const char *module_st_hash        (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_HASH;         }
+const char *module_st_pass        (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_PASS;         }
+
+typedef struct devise_hash
+{
+  u32 salt_buf[64];
+  int salt_len;
+
+  u32 site_key_buf[64];
+  int site_key_len;
+
+} devise_hash_t;
+
+u64 module_esalt_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
+{
+  const u64 esalt_size = (const u64) sizeof (devise_hash_t);
+
+  return esalt_size;
+}
+
+int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED void *digest_buf, MAYBE_UNUSED salt_t *salt, MAYBE_UNUSED void *esalt_buf, MAYBE_UNUSED void *hook_salt_buf, MAYBE_UNUSED hashinfo_t *hash_info, const char *line_buf, MAYBE_UNUSED const int line_len)
+{
+  u32 *digest = (u32 *) digest_buf;
+
+  devise_hash_t *devise_double_salt = (devise_hash_t *) esalt_buf;
+
+  token_t token;
+
+  token.token_cnt  = 3;
+
+  token.sep[0]     = hashconfig->separator;
+  token.len_min[0] = 40;
+  token.len_max[0] = 40;
+  token.attr[0]    = TOKEN_ATTR_VERIFY_LENGTH
+                   | TOKEN_ATTR_VERIFY_HEX;
+
+  token.sep[1]     = hashconfig->separator;
+  token.len_min[1] = SALT_MIN;
+  token.len_max[1] = SALT_MAX;
+  token.attr[1]    = TOKEN_ATTR_VERIFY_LENGTH;
+
+  token.sep[2]     = hashconfig->separator;
+  token.len_min[2] = SALT_MIN;
+  token.len_max[2] = SALT_MAX;
+  token.attr[2]    = TOKEN_ATTR_VERIFY_LENGTH;
+
+  if (hashconfig->opts_type & OPTS_TYPE_ST_HEX)
+  {
+    token.len_min[1] *= 2;
+    token.len_max[1] *= 2;
+
+    token.attr[1] |= TOKEN_ATTR_VERIFY_HEX;
+
+    token.len_min[2] *= 2;
+    token.len_max[2] *= 2;
+
+    token.attr[2] |= TOKEN_ATTR_VERIFY_HEX;
+  }
+
+  const int rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);
+
+  if (rc_tokenizer != PARSER_OK) return (rc_tokenizer);
+
+  const u8 *hash_pos = token.buf[0];
+
+  digest[0] = hex_to_u32 (hash_pos +  0);
+  digest[1] = hex_to_u32 (hash_pos +  8);
+  digest[2] = hex_to_u32 (hash_pos + 16);
+  digest[3] = hex_to_u32 (hash_pos + 24);
+  digest[4] = hex_to_u32 (hash_pos + 32);
+
+  digest[0] = byte_swap_32 (digest[0]);
+  digest[1] = byte_swap_32 (digest[1]);
+  digest[2] = byte_swap_32 (digest[2]);
+  digest[3] = byte_swap_32 (digest[3]);
+  digest[4] = byte_swap_32 (digest[4]);
+
+  const u8 *salt_pos = token.buf[1];
+  const int salt_len = token.len[1];
+
+  const bool parse_rc1 = generic_salt_decode (hashconfig, token.buf[1], token.len[1], (u8 *) devise_double_salt->salt_buf, (int *) &devise_double_salt->salt_len);
+
+  if (parse_rc1 == false) return (PARSER_SALT_LENGTH);
+
+  const bool parse_rc2 = generic_salt_decode (hashconfig, token.buf[2], token.len[2], (u8 *) devise_double_salt->site_key_buf, (int *) &devise_double_salt->site_key_len);
+
+  if (parse_rc2 == false) return (PARSER_SALT_LENGTH);
+
+  // make salt sorter happy
+
+  salt->salt_buf[0] = devise_double_salt->salt_buf[0];
+  salt->salt_buf[1] = devise_double_salt->salt_buf[1];
+
+  salt->salt_len = 8;
+
+  return (PARSER_OK);
+}
+
+int module_hash_encode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const void *digest_buf, MAYBE_UNUSED const salt_t *salt, MAYBE_UNUSED const void *esalt_buf, MAYBE_UNUSED const void *hook_salt_buf, MAYBE_UNUSED const hashinfo_t *hash_info, char *line_buf, MAYBE_UNUSED const int line_size)
+{
+  const u32 *digest = (const u32 *) digest_buf;
+
+  const devise_hash_t *devise_double_salt = (const devise_hash_t *) esalt_buf;
+
+  // we can not change anything in the original buffer, otherwise destroying sorting
+  // therefore create some local buffer
+
+  u32 tmp[5];
+
+  tmp[0] = digest[0];
+  tmp[1] = digest[1];
+  tmp[2] = digest[2];
+  tmp[3] = digest[3];
+  tmp[4] = digest[4];
+
+  tmp[0] = byte_swap_32 (tmp[0]);
+  tmp[1] = byte_swap_32 (tmp[1]);
+  tmp[2] = byte_swap_32 (tmp[2]);
+  tmp[3] = byte_swap_32 (tmp[3]);
+  tmp[4] = byte_swap_32 (tmp[4]);
+
+  u8 *out_buf = (u8 *) line_buf;
+
+  int out_len = 0;
+
+  u32_to_hex (tmp[0], out_buf + out_len); out_len += 8;
+  u32_to_hex (tmp[1], out_buf + out_len); out_len += 8;
+  u32_to_hex (tmp[2], out_buf + out_len); out_len += 8;
+  u32_to_hex (tmp[3], out_buf + out_len); out_len += 8;
+  u32_to_hex (tmp[4], out_buf + out_len); out_len += 8;
+
+  out_buf[out_len] = hashconfig->separator;
+
+  out_len += 1;
+
+  out_len += generic_salt_encode (hashconfig, (const u8 *) devise_double_salt->salt_buf, (const int) devise_double_salt->salt_len, out_buf + out_len);
+
+  out_buf[out_len] = hashconfig->separator;
+
+  out_len += 1;
+
+  out_len += generic_salt_encode (hashconfig, (const u8 *) devise_double_salt->site_key_buf, (const int) devise_double_salt->site_key_len, out_buf + out_len);
+
+  return out_len;
+}
+
+void module_init (module_ctx_t *module_ctx)
+{
+  module_ctx->module_context_size             = MODULE_CONTEXT_SIZE_CURRENT;
+  module_ctx->module_interface_version        = MODULE_INTERFACE_VERSION_CURRENT;
+
+  module_ctx->module_attack_exec              = module_attack_exec;
+  module_ctx->module_benchmark_esalt          = MODULE_DEFAULT;
+  module_ctx->module_benchmark_hook_salt      = MODULE_DEFAULT;
+  module_ctx->module_benchmark_mask           = MODULE_DEFAULT;
+  module_ctx->module_benchmark_salt           = MODULE_DEFAULT;
+  module_ctx->module_build_plain_postprocess  = MODULE_DEFAULT;
+  module_ctx->module_deep_comp_kernel         = MODULE_DEFAULT;
+  module_ctx->module_dgst_pos0                = module_dgst_pos0;
+  module_ctx->module_dgst_pos1                = module_dgst_pos1;
+  module_ctx->module_dgst_pos2                = module_dgst_pos2;
+  module_ctx->module_dgst_pos3                = module_dgst_pos3;
+  module_ctx->module_dgst_size                = module_dgst_size;
+  module_ctx->module_dictstat_disable         = MODULE_DEFAULT;
+  module_ctx->module_esalt_size               = module_esalt_size;
+  module_ctx->module_extra_buffer_size        = MODULE_DEFAULT;
+  module_ctx->module_extra_tmp_size           = MODULE_DEFAULT;
+  module_ctx->module_forced_outfile_format    = MODULE_DEFAULT;
+  module_ctx->module_hash_binary_count        = MODULE_DEFAULT;
+  module_ctx->module_hash_binary_parse        = MODULE_DEFAULT;
+  module_ctx->module_hash_binary_save         = MODULE_DEFAULT;
+  module_ctx->module_hash_decode_outfile      = MODULE_DEFAULT;
+  module_ctx->module_hash_decode_zero_hash    = MODULE_DEFAULT;
+  module_ctx->module_hash_decode              = module_hash_decode;
+  module_ctx->module_hash_encode_status       = MODULE_DEFAULT;
+  module_ctx->module_hash_encode              = module_hash_encode;
+  module_ctx->module_hash_init_selftest       = MODULE_DEFAULT;
+  module_ctx->module_hash_mode                = MODULE_DEFAULT;
+  module_ctx->module_hash_category            = module_hash_category;
+  module_ctx->module_hash_name                = module_hash_name;
+  module_ctx->module_hlfmt_disable            = MODULE_DEFAULT;
+  module_ctx->module_hook12                   = MODULE_DEFAULT;
+  module_ctx->module_hook23                   = MODULE_DEFAULT;
+  module_ctx->module_hook_salt_size           = MODULE_DEFAULT;
+  module_ctx->module_hook_size                = MODULE_DEFAULT;
+  module_ctx->module_jit_build_options        = MODULE_DEFAULT;
+  module_ctx->module_jit_cache_disable        = MODULE_DEFAULT;
+  module_ctx->module_kernel_accel_max         = MODULE_DEFAULT;
+  module_ctx->module_kernel_accel_min         = MODULE_DEFAULT;
+  module_ctx->module_kernel_loops_max         = MODULE_DEFAULT;
+  module_ctx->module_kernel_loops_min         = MODULE_DEFAULT;
+  module_ctx->module_kernel_threads_max       = MODULE_DEFAULT;
+  module_ctx->module_kernel_threads_min       = MODULE_DEFAULT;
+  module_ctx->module_kern_type                = module_kern_type;
+  module_ctx->module_kern_type_dynamic        = MODULE_DEFAULT;
+  module_ctx->module_opti_type                = module_opti_type;
+  module_ctx->module_opts_type                = module_opts_type;
+  module_ctx->module_outfile_check_disable    = MODULE_DEFAULT;
+  module_ctx->module_outfile_check_nocomp     = MODULE_DEFAULT;
+  module_ctx->module_potfile_disable          = MODULE_DEFAULT;
+  module_ctx->module_potfile_keep_all_hashes  = MODULE_DEFAULT;
+  module_ctx->module_pwdump_column            = MODULE_DEFAULT;
+  module_ctx->module_pw_max                   = MODULE_DEFAULT;
+  module_ctx->module_pw_min                   = MODULE_DEFAULT;
+  module_ctx->module_salt_max                 = MODULE_DEFAULT;
+  module_ctx->module_salt_min                 = MODULE_DEFAULT;
+  module_ctx->module_salt_type                = module_salt_type;
+  module_ctx->module_separator                = MODULE_DEFAULT;
+  module_ctx->module_st_hash                  = module_st_hash;
+  module_ctx->module_st_pass                  = module_st_pass;
+  module_ctx->module_tmp_size                 = MODULE_DEFAULT;
+  module_ctx->module_unstable_warning         = MODULE_DEFAULT;
+  module_ctx->module_warmup_disable           = MODULE_DEFAULT;
+}
diff --git a/tools/test_modules/m19500.pm b/tools/test_modules/m19500.pm
new file mode 100644
index 000000000..e351fd1bc
--- /dev/null
+++ b/tools/test_modules/m19500.pm
@@ -0,0 +1,50 @@
+#!/usr/bin/env perl
+
+##
+## Author......: See docs/credits.txt
+## License.....: MIT
+##
+
+use strict;
+use warnings;
+
+use Digest::SHA qw (sha1_hex);
+
+sub module_constraints { [[0, 256], [0, 256], [-1, -1], [-1, -1], [-1, -1]] }
+
+sub module_generate_hash
+{
+  my $word  = shift;
+  my $salt = shift;
+  my $site_key = shift || random_numeric_string (40);
+
+  my $digest = sha1_hex ($site_key . '--' . $salt . '--' . $word . '--'. $site_key);
+
+  for (my $i = 0; $i < 9; $i++) {
+    $digest = sha1_hex ($digest . '--' . $salt . '--' . $word . '--'. $site_key);
+  }
+
+  my $hash = sprintf ("%s:%s:%s", $digest, $salt, $site_key);
+
+  return $hash;
+}
+
+sub module_verify_hash
+{
+  my $line = shift;
+
+  my ($hash, $salt, $site_key, $word) = split (':', $line);
+
+  return unless defined $hash;
+  return unless defined $salt;
+  return unless defined $site_key;
+  return unless defined $word;
+
+  my $word_packed = pack_if_HEX_notation ($word);
+
+  my $new_hash = module_generate_hash ($word_packed, $salt, $site_key);
+
+  return ($new_hash, $word);
+}
+
+1;