diff --git a/OpenCL/m28600-pure.cl b/OpenCL/m28600-pure.cl
new file mode 100644
index 000000000..5689bf430
--- /dev/null
+++ b/OpenCL/m28600-pure.cl
@@ -0,0 +1,354 @@
+/**
+ * Author......: See docs/credits.txt
+ * License.....: MIT
+ */
+
+#define NEW_SIMD_CODE
+
+#ifdef KERNEL_STATIC
+#include "inc_vendor.h"
+#include "inc_types.h"
+#include "inc_platform.cl"
+#include "inc_common.cl"
+#include "inc_simd.cl"
+#include "inc_hash_sha256.cl"
+#endif
+
+#define COMPARE_S "inc_comp_single.cl"
+#define COMPARE_M "inc_comp_multi.cl"
+
+typedef struct postgres_sha256_tmp
+{
+  u32  ipad[8];
+  u32  opad[8];
+
+  u32  dgst[8];
+  u32  out[8];
+
+} postgres_sha256_tmp_t;
+
+typedef struct postgres_sha256
+{
+  u32 salt[16];
+  u32 storedKey[16];
+
+  u32 salt_len;
+  u32 storedKey_len;
+
+} postgres_sha256_t;
+
+DECLSPEC void hmac_sha256_run_V (u32x *w0, u32x *w1, u32x *w2, u32x *w3, u32x *ipad, u32x *opad, u32x *digest)
+{
+  digest[0] = ipad[0];
+  digest[1] = ipad[1];
+  digest[2] = ipad[2];
+  digest[3] = ipad[3];
+  digest[4] = ipad[4];
+  digest[5] = ipad[5];
+  digest[6] = ipad[6];
+  digest[7] = ipad[7];
+
+  sha256_transform_vector (w0, w1, w2, w3, digest);
+
+  w0[0] = digest[0];
+  w0[1] = digest[1];
+  w0[2] = digest[2];
+  w0[3] = digest[3];
+  w1[0] = digest[4];
+  w1[1] = digest[5];
+  w1[2] = digest[6];
+  w1[3] = digest[7];
+  w2[0] = 0x80000000;
+  w2[1] = 0;
+  w2[2] = 0;
+  w2[3] = 0;
+  w3[0] = 0;
+  w3[1] = 0;
+  w3[2] = 0;
+  w3[3] = (64 + 32) * 8;
+
+  digest[0] = opad[0];
+  digest[1] = opad[1];
+  digest[2] = opad[2];
+  digest[3] = opad[3];
+  digest[4] = opad[4];
+  digest[5] = opad[5];
+  digest[6] = opad[6];
+  digest[7] = opad[7];
+
+  sha256_transform_vector (w0, w1, w2, w3, digest);
+}
+
+KERNEL_FQ void m28600_init (KERN_ATTR_TMPS_ESALT (postgres_sha256_tmp_t, postgres_sha256_t))
+{
+  /**
+   * base
+   */
+
+  const u64 gid = get_global_id (0);
+
+  if (gid >= GID_CNT) return;
+
+  sha256_hmac_ctx_t sha256_hmac_ctx;
+
+  sha256_hmac_init_global_swap (&sha256_hmac_ctx, pws[gid].i, pws[gid].pw_len);
+
+  tmps[gid].ipad[0] = sha256_hmac_ctx.ipad.h[0];
+  tmps[gid].ipad[1] = sha256_hmac_ctx.ipad.h[1];
+  tmps[gid].ipad[2] = sha256_hmac_ctx.ipad.h[2];
+  tmps[gid].ipad[3] = sha256_hmac_ctx.ipad.h[3];
+  tmps[gid].ipad[4] = sha256_hmac_ctx.ipad.h[4];
+  tmps[gid].ipad[5] = sha256_hmac_ctx.ipad.h[5];
+  tmps[gid].ipad[6] = sha256_hmac_ctx.ipad.h[6];
+  tmps[gid].ipad[7] = sha256_hmac_ctx.ipad.h[7];
+
+  tmps[gid].opad[0] = sha256_hmac_ctx.opad.h[0];
+  tmps[gid].opad[1] = sha256_hmac_ctx.opad.h[1];
+  tmps[gid].opad[2] = sha256_hmac_ctx.opad.h[2];
+  tmps[gid].opad[3] = sha256_hmac_ctx.opad.h[3];
+  tmps[gid].opad[4] = sha256_hmac_ctx.opad.h[4];
+  tmps[gid].opad[5] = sha256_hmac_ctx.opad.h[5];
+  tmps[gid].opad[6] = sha256_hmac_ctx.opad.h[6];
+  tmps[gid].opad[7] = sha256_hmac_ctx.opad.h[7];
+
+  sha256_hmac_update_global (&sha256_hmac_ctx, esalt_bufs[DIGESTS_OFFSET_HOST].salt, esalt_bufs[DIGESTS_OFFSET_HOST].salt_len);
+
+  for (u32 i = 0, j = 1; i < 8; i += 8, j += 1)
+  {
+    sha256_hmac_ctx_t sha256_hmac_ctx2 = sha256_hmac_ctx;
+
+    u32 w0[4];
+    u32 w1[4];
+    u32 w2[4];
+    u32 w3[4];
+
+    w0[0] = j;
+    w0[1] = 0;
+    w0[2] = 0;
+    w0[3] = 0;
+    w1[0] = 0;
+    w1[1] = 0;
+    w1[2] = 0;
+    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] = 0;
+
+    sha256_hmac_update_64 (&sha256_hmac_ctx2, w0, w1, w2, w3, 4);
+
+    sha256_hmac_final (&sha256_hmac_ctx2);
+
+    tmps[gid].dgst[i + 0] = sha256_hmac_ctx2.opad.h[0];
+    tmps[gid].dgst[i + 1] = sha256_hmac_ctx2.opad.h[1];
+    tmps[gid].dgst[i + 2] = sha256_hmac_ctx2.opad.h[2];
+    tmps[gid].dgst[i + 3] = sha256_hmac_ctx2.opad.h[3];
+    tmps[gid].dgst[i + 4] = sha256_hmac_ctx2.opad.h[4];
+    tmps[gid].dgst[i + 5] = sha256_hmac_ctx2.opad.h[5];
+    tmps[gid].dgst[i + 6] = sha256_hmac_ctx2.opad.h[6];
+    tmps[gid].dgst[i + 7] = sha256_hmac_ctx2.opad.h[7];
+
+    tmps[gid].out[i + 0] = tmps[gid].dgst[i + 0];
+    tmps[gid].out[i + 1] = tmps[gid].dgst[i + 1];
+    tmps[gid].out[i + 2] = tmps[gid].dgst[i + 2];
+    tmps[gid].out[i + 3] = tmps[gid].dgst[i + 3];
+    tmps[gid].out[i + 4] = tmps[gid].dgst[i + 4];
+    tmps[gid].out[i + 5] = tmps[gid].dgst[i + 5];
+    tmps[gid].out[i + 6] = tmps[gid].dgst[i + 6];
+    tmps[gid].out[i + 7] = tmps[gid].dgst[i + 7];
+  }
+}
+
+KERNEL_FQ void m28600_loop (KERN_ATTR_TMPS_ESALT (postgres_sha256_tmp_t, postgres_sha256_t))
+{
+  const u64 gid = get_global_id (0);
+
+  if ((gid * VECT_SIZE) >= GID_CNT) return;
+
+  u32x ipad[8];
+  u32x opad[8];
+
+  ipad[0] = packv (tmps, ipad, gid, 0);
+  ipad[1] = packv (tmps, ipad, gid, 1);
+  ipad[2] = packv (tmps, ipad, gid, 2);
+  ipad[3] = packv (tmps, ipad, gid, 3);
+  ipad[4] = packv (tmps, ipad, gid, 4);
+  ipad[5] = packv (tmps, ipad, gid, 5);
+  ipad[6] = packv (tmps, ipad, gid, 6);
+  ipad[7] = packv (tmps, ipad, gid, 7);
+
+  opad[0] = packv (tmps, opad, gid, 0);
+  opad[1] = packv (tmps, opad, gid, 1);
+  opad[2] = packv (tmps, opad, gid, 2);
+  opad[3] = packv (tmps, opad, gid, 3);
+  opad[4] = packv (tmps, opad, gid, 4);
+  opad[5] = packv (tmps, opad, gid, 5);
+  opad[6] = packv (tmps, opad, gid, 6);
+  opad[7] = packv (tmps, opad, gid, 7);
+
+  for (u32 i = 0; i < 8; i += 8)
+  {
+    u32x dgst[8];
+    u32x out[8];
+
+    dgst[0] = packv (tmps, dgst, gid, i + 0);
+    dgst[1] = packv (tmps, dgst, gid, i + 1);
+    dgst[2] = packv (tmps, dgst, gid, i + 2);
+    dgst[3] = packv (tmps, dgst, gid, i + 3);
+    dgst[4] = packv (tmps, dgst, gid, i + 4);
+    dgst[5] = packv (tmps, dgst, gid, i + 5);
+    dgst[6] = packv (tmps, dgst, gid, i + 6);
+    dgst[7] = packv (tmps, dgst, gid, i + 7);
+
+    out[0] = packv (tmps, out, gid, i + 0);
+    out[1] = packv (tmps, out, gid, i + 1);
+    out[2] = packv (tmps, out, gid, i + 2);
+    out[3] = packv (tmps, out, gid, i + 3);
+    out[4] = packv (tmps, out, gid, i + 4);
+    out[5] = packv (tmps, out, gid, i + 5);
+    out[6] = packv (tmps, out, gid, i + 6);
+    out[7] = packv (tmps, out, gid, i + 7);
+
+    for (u32 j = 0; j < LOOP_CNT; j++)
+    {
+      u32x w0[4];
+      u32x w1[4];
+      u32x w2[4];
+      u32x w3[4];
+
+      w0[0] = dgst[0];
+      w0[1] = dgst[1];
+      w0[2] = dgst[2];
+      w0[3] = dgst[3];
+      w1[0] = dgst[4];
+      w1[1] = dgst[5];
+      w1[2] = dgst[6];
+      w1[3] = dgst[7];
+      w2[0] = 0x80000000;
+      w2[1] = 0;
+      w2[2] = 0;
+      w2[3] = 0;
+      w3[0] = 0;
+      w3[1] = 0;
+      w3[2] = 0;
+      w3[3] = (64 + 32) * 8;
+
+      hmac_sha256_run_V (w0, w1, w2, w3, ipad, opad, dgst);
+
+      out[0] ^= dgst[0];
+      out[1] ^= dgst[1];
+      out[2] ^= dgst[2];
+      out[3] ^= dgst[3];
+      out[4] ^= dgst[4];
+      out[5] ^= dgst[5];
+      out[6] ^= dgst[6];
+      out[7] ^= dgst[7];
+    }
+
+    unpackv (tmps, dgst, gid, i + 0, dgst[0]);
+    unpackv (tmps, dgst, gid, i + 1, dgst[1]);
+    unpackv (tmps, dgst, gid, i + 2, dgst[2]);
+    unpackv (tmps, dgst, gid, i + 3, dgst[3]);
+    unpackv (tmps, dgst, gid, i + 4, dgst[4]);
+    unpackv (tmps, dgst, gid, i + 5, dgst[5]);
+    unpackv (tmps, dgst, gid, i + 6, dgst[6]);
+    unpackv (tmps, dgst, gid, i + 7, dgst[7]);
+
+    unpackv (tmps, out, gid, i + 0, out[0]);
+    unpackv (tmps, out, gid, i + 1, out[1]);
+    unpackv (tmps, out, gid, i + 2, out[2]);
+    unpackv (tmps, out, gid, i + 3, out[3]);
+    unpackv (tmps, out, gid, i + 4, out[4]);
+    unpackv (tmps, out, gid, i + 5, out[5]);
+    unpackv (tmps, out, gid, i + 6, out[6]);
+    unpackv (tmps, out, gid, i + 7, out[7]);
+  }
+}
+
+KERNEL_FQ void m28600_comp (KERN_ATTR_TMPS_ESALT (postgres_sha256_tmp_t, postgres_sha256_t))
+{
+  /**
+   * base
+   */
+
+  const u64 gid = get_global_id (0);
+
+  if (gid >= GID_CNT) return;
+
+  const u64 lid = get_local_id (0);
+
+  u32 out[8];
+
+  out[0] = tmps[gid].out[0];
+  out[1] = tmps[gid].out[1];
+  out[2] = tmps[gid].out[2];
+  out[3] = tmps[gid].out[3];
+  out[4] = tmps[gid].out[4];
+  out[5] = tmps[gid].out[5];
+  out[6] = tmps[gid].out[6];
+  out[7] = tmps[gid].out[7];
+
+  // HMAC-SHA256 with "Server Key" salt:
+
+  u32 w0[4];
+  u32 w1[4];
+  u32 w2[4];
+  u32 w3[4];
+
+  w0[0] = out[0];
+  w0[1] = out[1];
+  w0[2] = out[2];
+  w0[3] = out[3];
+  w1[0] = out[4];
+  w1[1] = out[5];
+  w1[2] = out[6];
+  w1[3] = out[7];
+  w2[0] = 0;
+  w2[1] = 0;
+  w2[2] = 0;
+  w2[3] = 0;
+  w3[0] = 0;
+  w3[1] = 0;
+  w3[2] = 0;
+  w3[3] = 0;
+
+  sha256_hmac_ctx_t sha256_hmac_ctx;
+
+  sha256_hmac_init_64 (&sha256_hmac_ctx, w0, w1, w2, w3);
+
+  w0[0] = 0x53657276; // Serv
+  w0[1] = 0x6572204b; // er K
+  w0[2] = 0x65790000; // ey
+  w0[3] = 0;
+  w1[0] = 0;
+  w1[1] = 0;
+  w1[2] = 0;
+  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] = 0;
+
+  sha256_hmac_update_64 (&sha256_hmac_ctx, w0, w1, w2, w3, 10);
+
+  sha256_hmac_final (&sha256_hmac_ctx);
+
+  const u32 r0 = sha256_hmac_ctx.opad.h[DGST_R0];
+  const u32 r1 = sha256_hmac_ctx.opad.h[DGST_R1];
+  const u32 r2 = sha256_hmac_ctx.opad.h[DGST_R2];
+  const u32 r3 = sha256_hmac_ctx.opad.h[DGST_R3];
+
+  #define il_pos 0
+
+  #ifdef KERNEL_STATIC
+  #include COMPARE_M
+  #endif
+}
diff --git a/docs/changes.txt b/docs/changes.txt
index 4768fc3ae..77e087ea7 100644
--- a/docs/changes.txt
+++ b/docs/changes.txt
@@ -7,6 +7,7 @@
 - Added hash-mode: Exodus Desktop Wallet (scrypt)
 - Added hash-mode: Teamspeak 3 (channel hash)
 - Added hash-mode: sha256($salt.sha256_bin($pass))
+- Added hash-mode: PostgreSQL SCRAM-SHA-256
 
 ##
 ## Features
diff --git a/src/modules/module_28600.c b/src/modules/module_28600.c
new file mode 100644
index 000000000..653e78bbb
--- /dev/null
+++ b/src/modules/module_28600.c
@@ -0,0 +1,397 @@
+/**
+ * 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 "emu_inc_hash_sha256.h"
+
+static const u32 ATTACK_EXEC = ATTACK_EXEC_OUTSIDE_KERNEL;
+static const u32 DGST_POS0 = 0;
+static const u32 DGST_POS1 = 1;
+static const u32 DGST_POS2 = 2;
+static const u32 DGST_POS3 = 3;
+static const u32 DGST_SIZE = DGST_SIZE_4_8;
+static const u32 HASH_CATEGORY = HASH_CATEGORY_DATABASE_SERVER;
+static const char *HASH_NAME = "PostgreSQL SCRAM-SHA-256";
+static const u64 KERN_TYPE = 28600;
+static const u32 OPTI_TYPE =
+    OPTI_TYPE_ZERO_BYTE | OPTI_TYPE_SLOW_HASH_SIMD_LOOP;
+static const u64 OPTS_TYPE = OPTS_TYPE_PT_GENERATE_LE | OPTS_TYPE_ST_BASE64;
+static const u32 SALT_TYPE = SALT_TYPE_EMBEDDED;
+static const char *ST_PASS = "hashcat";
+static const char *ST_HASH = "SCRAM-SHA-256$4096:IKfxzJ8Nq4PkLJCfgKcPmA==$"
+                             "iRw3qwTp18uaBnsTOEExbtgWdKeBMbSSnZvqD4sdqLQ=:"
+                             "hPciC1CcnBna3szR8Mf3MVc8t0W7QPbIHoMMrh4zRV0=";
+
+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 postgres_sha256_tmp {
+  u32 ipad[8];
+  u32 opad[8];
+
+  u32 dgst[8];
+  u32 out[8];
+
+} postgres_sha256_tmp_t;
+
+typedef struct postgres_sha256 {
+  u32 salt[16];
+  u32 storedKey[16];
+
+  u32 salt_len;
+  u32 storedKey_len;
+
+} postgres_sha256_t;
+
+static const char *SIGNATURE_POSTGRES_SHA256 = "SCRAM-SHA-256";
+
+char *module_jit_build_options (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hashes_t *hashes, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+  char *jit_build_options = NULL;
+
+  // Extra treatment for Apple systems
+  if (device_param->opencl_platform_vendor_id == VENDOR_ID_APPLE) {
+    return jit_build_options;
+  }
+
+  // NVIDIA GPU
+  if (device_param->opencl_device_vendor_id == VENDOR_ID_NV) {
+    hc_asprintf(&jit_build_options, "-D _unroll");
+  }
+
+  // HIP
+  if (device_param->opencl_device_vendor_id == VENDOR_ID_AMD_USE_HIP) {
+    hc_asprintf(&jit_build_options, "-D _unroll");
+  }
+
+  // ROCM
+  if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) &&
+      (device_param->has_vperm == true)) {
+    hc_asprintf(&jit_build_options, "-D _unroll");
+  }
+
+  return jit_build_options;
+}
+
+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(postgres_sha256_t);
+
+  return esalt_size;
+}
+
+u64 module_tmp_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 tmp_size = (const u64)sizeof(postgres_sha256_tmp_t);
+
+  return tmp_size;
+}
+
+u32 module_pw_max (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
+{
+  // this overrides the reductions of PW_MAX in case optimized kernel is
+  // selected IOW, even in optimized kernel mode it support length 256
+
+  const u32 pw_max = PW_MAX;
+
+  return pw_max;
+}
+
+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;
+
+  postgres_sha256_t *postgres_sha256 = (postgres_sha256_t *)esalt_buf;
+
+  hc_token_t token;
+
+  token.token_cnt = 5;
+
+  token.signatures_cnt = 1;
+  token.signatures_buf[0] = SIGNATURE_POSTGRES_SHA256;
+
+  token.sep[0] = '$';
+  token.len_min[0] = 13;
+  token.len_max[0] = 13;
+  token.attr[0] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_SIGNATURE;
+
+  token.sep[1] = ':';
+  token.len_min[1] = 1;
+  token.len_max[1] = 7;
+  token.attr[1] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_DIGIT;
+
+  token.sep[2] = '$';
+  token.len_min[2] = 0;
+  token.len_max[2] = 88; 
+  token.attr[2] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_BASE64A;
+
+  token.sep[3] = ':';
+  token.len_min[3] = 44;
+  token.len_max[3] = 44;
+  token.attr[3] = TOKEN_ATTR_VERIFY_LENGTH | TOKEN_ATTR_VERIFY_BASE64A;
+
+  token.len[4] = 44;
+  token.attr[4] = TOKEN_ATTR_FIXED_LENGTH | TOKEN_ATTR_VERIFY_BASE64A;
+
+  const int rc_tokenizer =
+      input_tokenizer((const u8 *)line_buf, line_len, &token);
+
+  if (rc_tokenizer != PARSER_OK)
+    return (rc_tokenizer);
+
+  // iter
+
+  const u8 *iter_pos = token.buf[1];
+
+  const u32 iter = hc_strtoul((const char *)iter_pos, NULL, 10);
+
+  if (iter < 1)
+    return (PARSER_SALT_ITERATION);
+
+  salt->salt_iter = iter - 1;
+
+  // salt
+  u8 tmp_buf[100] = {0};
+
+  const u8 *salt_pos = token.buf[2];
+  const int salt_len = token.len[2];
+
+  int tmp_len = base64_decode(base64_to_int, salt_pos, salt_len, tmp_buf);
+
+  if (tmp_len > 64)
+    return (PARSER_SALT_LENGTH);
+
+  memcpy(postgres_sha256->salt, tmp_buf, tmp_len);
+
+  postgres_sha256->salt[0] = byte_swap_32(postgres_sha256->salt[0]);
+  postgres_sha256->salt[1] = byte_swap_32(postgres_sha256->salt[1]);
+  postgres_sha256->salt[2] = byte_swap_32(postgres_sha256->salt[2]);
+  postgres_sha256->salt[3] = byte_swap_32(postgres_sha256->salt[3]);
+  postgres_sha256->salt[4] = byte_swap_32(postgres_sha256->salt[4]);
+  postgres_sha256->salt[5] = byte_swap_32(postgres_sha256->salt[5]);
+  postgres_sha256->salt[6] = byte_swap_32(postgres_sha256->salt[6]);
+  postgres_sha256->salt[7] = byte_swap_32(postgres_sha256->salt[7]);
+  postgres_sha256->salt[8] = byte_swap_32(postgres_sha256->salt[8]);
+  postgres_sha256->salt[9] = byte_swap_32(postgres_sha256->salt[9]);
+  postgres_sha256->salt[10] = byte_swap_32(postgres_sha256->salt[10]);
+  postgres_sha256->salt[11] = byte_swap_32(postgres_sha256->salt[11]);
+  postgres_sha256->salt[12] = byte_swap_32(postgres_sha256->salt[12]);
+  postgres_sha256->salt[13] = byte_swap_32(postgres_sha256->salt[13]);
+  postgres_sha256->salt[14] = byte_swap_32(postgres_sha256->salt[14]);
+  postgres_sha256->salt[15] = byte_swap_32(postgres_sha256->salt[15]);
+
+  postgres_sha256->salt_len = tmp_len;
+  salt->salt_len = tmp_len;
+
+  salt->salt_buf[0] = postgres_sha256->salt[0];
+  salt->salt_buf[1] = postgres_sha256->salt[1];
+  salt->salt_buf[2] = postgres_sha256->salt[2];
+  salt->salt_buf[3] = postgres_sha256->salt[3];
+  salt->salt_buf[4] = postgres_sha256->salt[4];
+  salt->salt_buf[5] = postgres_sha256->salt[5];
+  salt->salt_buf[6] = postgres_sha256->salt[6];
+  salt->salt_buf[7] = postgres_sha256->salt[7];
+  salt->salt_buf[8] = postgres_sha256->salt[8];
+  salt->salt_buf[9] = postgres_sha256->salt[9];
+  salt->salt_buf[10] = postgres_sha256->salt[10];
+  salt->salt_buf[11] = postgres_sha256->salt[11];
+  salt->salt_buf[12] = postgres_sha256->salt[12];
+  salt->salt_buf[13] = postgres_sha256->salt[13];
+  salt->salt_buf[14] = postgres_sha256->salt[14];
+  salt->salt_buf[15] = postgres_sha256->salt[15];
+
+  // stored key
+  const u8 *stored_key_pos = token.buf[3];
+  const int stored_key_len = token.len[3];
+
+  memset(tmp_buf, 0, sizeof(tmp_buf));
+
+  tmp_len = base64_decode(base64_to_int, stored_key_pos, stored_key_len, tmp_buf);
+
+  memcpy(postgres_sha256->storedKey, tmp_buf, tmp_len);
+
+  postgres_sha256->storedKey_len = tmp_len;
+
+  // server key
+
+  const u8 *hash_pos = token.buf[4];
+  const int hash_len = token.len[4];
+
+  memset(tmp_buf, 0, sizeof(tmp_buf));
+
+  tmp_len = base64_decode(base64_to_int, hash_pos, hash_len, tmp_buf);
+
+  if (tmp_len != 32)
+    return (PARSER_HASH_LENGTH);
+
+  memcpy(digest, tmp_buf, 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]);
+  digest[5] = byte_swap_32(digest[5]);
+  digest[6] = byte_swap_32(digest[6]);
+  digest[7] = byte_swap_32(digest[7]);
+
+  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)
+{
+  u32 *digest = (u32 *)digest_buf;
+
+  postgres_sha256_t *postgres_sha256 = (postgres_sha256_t *)esalt_buf;
+
+  // salt
+
+  u32 salt_buf[8] = {0}; // make the buffer large enough for base64_encode ()
+
+  salt_buf[0] = byte_swap_32(postgres_sha256->salt[0]);
+  salt_buf[1] = byte_swap_32(postgres_sha256->salt[1]);
+  salt_buf[2] = byte_swap_32(postgres_sha256->salt[2]);
+  salt_buf[3] = byte_swap_32(postgres_sha256->salt[3]);
+  salt_buf[4] = byte_swap_32(postgres_sha256->salt[4]);
+  salt_buf[5] = byte_swap_32(postgres_sha256->salt[5]);
+  salt_buf[6] = byte_swap_32(postgres_sha256->salt[6]);
+  salt_buf[7] = byte_swap_32(postgres_sha256->salt[7]);
+
+  u8 salt_base64[64] = {0};
+
+  base64_encode(int_to_base64, (const u8 *)salt_buf, salt->salt_len,
+                salt_base64);
+
+  // server key
+
+  u32 hash[8] = {0}; // make the buffer large enough for base64_encode ()
+
+  hash[0] = byte_swap_32(digest[0]);
+  hash[1] = byte_swap_32(digest[1]);
+  hash[2] = byte_swap_32(digest[2]);
+  hash[3] = byte_swap_32(digest[3]);
+  hash[4] = byte_swap_32(digest[4]);
+  hash[5] = byte_swap_32(digest[5]);
+  hash[6] = byte_swap_32(digest[6]);
+  hash[7] = byte_swap_32(digest[7]);
+
+  u8 server_key_base64[64] = {0};
+
+  base64_encode(int_to_base64, (const u8 *)hash, 32, server_key_base64);
+
+  // stored key
+
+  u8 stored_key_bin[100] = { 0 };
+
+  memcpy (stored_key_bin, (char *) postgres_sha256->storedKey, postgres_sha256->storedKey_len);
+
+  u8 stored_key_base64[64] = {0};
+
+  base64_encode(int_to_base64, stored_key_bin, postgres_sha256->storedKey_len, stored_key_base64);
+
+  // print final line
+
+  const int line_len =
+      snprintf(line_buf, line_size, "%s$%u:%s$%s:%s", SIGNATURE_POSTGRES_SHA256,
+               salt->salt_iter + 1, salt_base64, stored_key_base64, server_key_base64);
+  return line_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_deprecated_notice = 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_extra_tuningdb_block = 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_postprocess = MODULE_DEFAULT;
+  module_ctx->module_hash_decode_potfile = 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_potfile = 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_hashes_count_min = MODULE_DEFAULT;
+  module_ctx->module_hashes_count_max = MODULE_DEFAULT;
+  module_ctx->module_hlfmt_disable = MODULE_DEFAULT;
+  module_ctx->module_hook_extra_param_size = MODULE_DEFAULT;
+  module_ctx->module_hook_extra_param_init = MODULE_DEFAULT;
+  module_ctx->module_hook_extra_param_term = 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_jit_build_options;
+  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_custom_check = 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_pw_max;
+  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_tmp_size;
+  module_ctx->module_unstable_warning = MODULE_DEFAULT;
+  module_ctx->module_warmup_disable = MODULE_DEFAULT;
+}
diff --git a/tools/test_modules/m28600.pm b/tools/test_modules/m28600.pm
new file mode 100644
index 000000000..52e832edb
--- /dev/null
+++ b/tools/test_modules/m28600.pm
@@ -0,0 +1,78 @@
+#!/usr/bin/env perl
+
+##
+## Author......: See docs/credits.txt
+## License.....: MIT
+##
+
+use strict;
+use warnings;
+
+use MIME::Base64 qw (decode_base64 encode_base64);
+use Digest::SHA  qw (sha256);
+use Digest::HMAC qw (hmac);
+use Crypt::PBKDF2;
+
+sub module_constraints { [[0, 256], [28, 28], [-1, -1], [-1, -1], [-1, -1]] }
+
+my $ITERATIONS = 4096;
+my $HMAC_SALT  = "Server Key";
+my $HMAC_SALT_2  = "Client Key";
+
+sub module_generate_hash
+{
+  my $word = shift;
+  my $salt = shift;
+  my $iter = shift // $ITERATIONS;
+
+  my $pbkdf = Crypt::PBKDF2->new
+  (
+    hasher     => Crypt::PBKDF2->hasher_from_algorithm ('HMACSHA2', 256),
+    iterations => $iter,
+    output_len => 32
+  );
+
+  my $pbkdf2_dgst = $pbkdf->PBKDF2 ($salt, $word);
+
+  my $server_key = hmac ($HMAC_SALT, $pbkdf2_dgst, \&sha256);
+  my $stored_key = hmac ($HMAC_SALT_2, $pbkdf2_dgst, \&sha256);
+
+  my $hash = sprintf ('SCRAM-SHA-256$%i:%s$%s:%s', $iter, encode_base64 ($salt, ""), encode_base64 ($stored_key, ""), encode_base64 ($server_key, ""));
+
+  return $hash;
+}
+
+sub module_verify_hash
+{
+  my $line = shift;
+
+  my $idx = index ($line, '$');
+
+  return unless $idx >= 0;
+
+  my $hash = substr ($line, 0, $idx);
+  my $word = substr ($line, $idx + 1);
+
+  return unless substr ($hash, 0, 13) eq 'SCRAM-SHA-256';
+
+  my (undef, $iter, $salt) = split ('\*|\$', $hash);
+
+  return unless defined ($iter);
+  return unless defined ($salt);
+
+  return unless ($iter =~ m/^[1-9][0-9]{0,7}$/);
+
+  $iter = int ($iter);
+
+  return unless ($salt =~ m/^[A-Za-z0-9+\/=]{0,88}$/);
+
+  $salt = decode_base64 ($salt);
+
+  my $word_packed = pack_if_HEX_notation ($word);
+
+  my $new_hash = module_generate_hash ($word_packed, $salt, $iter);
+
+  return ($new_hash, $word);
+}
+
+1;