fixes vector bug in -m 27800 = MurmurHash 3 with -a 3

OpenCL/m27800_a0-optimized.cl

@@ -18,6 +18,7 @@
 DECLSPEC u32 Murmur32_Scramble (u32 k)
 {
   k = (k * 0x16A88000) | ((k * 0xCC9E2D51) >> 17);
+
   return (k * 0x1B873593);
 }
 
@@ -26,11 +27,13 @@ DECLSPEC u32 MurmurHash3(const u32 seed, PRIVATE_AS const u32 *data, const u32 s
   u32 checksum = seed;
 
   const u32 nBlocks = (size / 4);
+
   if (size >= 4) // Hash blocks, sizes of 4
   {
     for (u32 i = 0; i < nBlocks; i++)
     {
       checksum ^= Murmur32_Scramble (data[i]);
+
       checksum = (checksum >> 19) | (checksum << 13); //rotateRight(checksum, 19)
       checksum = (checksum * 5) + 0xE6546B64;
     }
@@ -38,21 +41,23 @@ DECLSPEC u32 MurmurHash3(const u32 seed, PRIVATE_AS const u32 *data, const u32 s
 
   if (size % 4)
   {
-    PRIVATE_AS const u8 *remainder = (PRIVATE_AS u8 *)(data + nBlocks);
+    const u32 remainder = data[nBlocks];
+
     u32 val = 0;
 
     switch (size & 3) //Hash remaining bytes as size isn't always aligned by 4
     {
       case 3:
-        val ^= (remainder[2] << 16);
+        val ^= remainder & 0x00ff0000;
       case 2:
-        val ^= (remainder[1] << 8);
+        val ^= remainder & 0x0000ff00;
       case 1:
-        val ^= remainder[0];
+        val ^= remainder & 0x000000ff;
+
         checksum ^= Murmur32_Scramble (val);
       default:
         break;
-    };
+    }
   }
 
   checksum ^= size;
@@ -60,6 +65,7 @@ DECLSPEC u32 MurmurHash3(const u32 seed, PRIVATE_AS const u32 *data, const u32 s
   checksum *= 0x85EBCA6B;
   checksum ^= checksum >> 13;
   checksum *= 0xC2B2AE35;
+
   return checksum ^ (checksum >> 16);
 }
 

OpenCL/m27800_a1-optimized.cl

@@ -16,6 +16,7 @@
 DECLSPEC u32 Murmur32_Scramble (u32 k)
 {
   k = (k * 0x16A88000) | ((k * 0xCC9E2D51) >> 17);
+
   return (k * 0x1B873593);
 }
 
@@ -24,11 +25,13 @@ DECLSPEC u32 MurmurHash3(const u32 seed, PRIVATE_AS const u32 *data, const u32 s
   u32 checksum = seed;
 
   const u32 nBlocks = (size / 4);
+
   if (size >= 4) // Hash blocks, sizes of 4
   {
     for (u32 i = 0; i < nBlocks; i++)
     {
       checksum ^= Murmur32_Scramble (data[i]);
+
       checksum = (checksum >> 19) | (checksum << 13); //rotateRight(checksum, 19)
       checksum = (checksum * 5) + 0xE6546B64;
     }
@@ -36,21 +39,23 @@ DECLSPEC u32 MurmurHash3(const u32 seed, PRIVATE_AS const u32 *data, const u32 s
 
   if (size % 4)
   {
-    PRIVATE_AS const u8 *remainder = (PRIVATE_AS u8 *)(data + nBlocks);
+    const u32 remainder = data[nBlocks];
+
     u32 val = 0;
 
     switch (size & 3) //Hash remaining bytes as size isn't always aligned by 4
     {
       case 3:
-        val ^= (remainder[2] << 16);
+        val ^= remainder & 0x00ff0000;
       case 2:
-        val ^= (remainder[1] << 8);
+        val ^= remainder & 0x0000ff00;
       case 1:
-        val ^= remainder[0];
+        val ^= remainder & 0x000000ff;
+
         checksum ^= Murmur32_Scramble (val);
       default:
         break;
-    };
+    }
   }
 
   checksum ^= size;
@@ -58,6 +63,7 @@ DECLSPEC u32 MurmurHash3(const u32 seed, PRIVATE_AS const u32 *data, const u32 s
   checksum *= 0x85EBCA6B;
   checksum ^= checksum >> 13;
   checksum *= 0xC2B2AE35;
+
   return checksum ^ (checksum >> 16);
 }
 

OpenCL/m27800_a3-optimized.cl

@@ -16,6 +16,7 @@
 DECLSPEC u32x Murmur32_Scramble (u32x k)
 {
   k = (k * 0x16A88000) | ((k * 0xCC9E2D51) >> 17);
+
   return (k * 0x1B873593);
 }
 
@@ -23,62 +24,68 @@ DECLSPEC u32x MurmurHash3(const u32 seed, const u32x w0, PRIVATE_AS const u32 *d
 {
   u32x checksum = seed;
 
-  if (size >= 4)
+  if (size >= 4) // Hash blocks, sizes of 4
   {
     checksum ^= Murmur32_Scramble (w0);
+
     checksum = (checksum >> 19) | (checksum << 13); //rotateRight(checksum, 19)
     checksum = (checksum * 5) + 0xE6546B64;
 
     const u32 nBlocks = (size / 4);
-    if (size >= 4) //Hash blocks, sizes of 4
+
-    {
+    // if (size >= 4) // size didn't change, why should we check it again ?
+    // {
     for (u32 i = 1; i < nBlocks; i++)
     {
       checksum ^= Murmur32_Scramble (data[i]);
+
       checksum = (checksum >> 19) | (checksum << 13); //rotateRight(checksum, 19)
       checksum = (checksum * 5) + 0xE6546B64;
     }
-    }
+    //}
 
     if (size % 4)
     {
-      PRIVATE_AS const u8 *remainder = (PRIVATE_AS u8 *)(data + nBlocks);
+      const u32x remainder = data[nBlocks];
+
       u32x val = 0;
 
       switch (size & 3) //Hash remaining bytes as size isn't always aligned by 4
       {
         case 3:
-          val ^= (remainder[2] << 16);
+          val ^= remainder & 0x00ff0000;
         case 2:
-          val ^= (remainder[1] << 8);
+          val ^= remainder & 0x0000ff00;
         case 1:
-          val ^= remainder[0];
+          val ^= remainder & 0x000000ff;
+
           checksum ^= Murmur32_Scramble (val);
         default:
           break;
-      };
       }
     }
-
+  }
   else
   {
     if (size % 4)
     {
-      PRIVATE_AS const u8 *remainder = (PRIVATE_AS u8 *)(&w0);
+      const u32x remainder = w0;
+
       u32x val = 0;
 
       switch (size & 3)
       {
         case 3:
-          val ^= (remainder[2] << 16);
+          val ^= remainder & 0x00ff0000;
         case 2:
-          val ^= (remainder[1] << 8);
+          val ^= remainder & 0x0000ff00;
         case 1:
-          val ^= remainder[0];
+          val ^= remainder & 0x000000ff;
+
           checksum ^= Murmur32_Scramble (val);
         default:
           break;
-      };
+      }
     }
   }
 
@@ -87,6 +94,7 @@ DECLSPEC u32x MurmurHash3(const u32 seed, const u32x w0, PRIVATE_AS const u32 *d
   checksum *= 0x85EBCA6B;
   checksum ^= checksum >> 13;
   checksum *= 0xC2B2AE35;
+
   return checksum ^ (checksum >> 16);
 }
 

docs/changes.txt

@@ -44,9 +44,10 @@
 - Fixed display problem of incorrect negative values in case of large numbers
 - Fixed display problem of the "Optimizers applied" list for algorithms using Register-Limit
 - Fixed example password output of --hash-info: force uppercase if OPTS_TYPE_PT_UPPER is set
-- Fixed false negative on hash-types 4510 and 4710 for hashes with long salts
 - Fixed false negative on Unit Test in case of out-of-memory with grep in single mode
 - Fixed false negative on Unit Test with hash-type 25400
+- Fixed false negative on hash-type 27800 if using vector width greater than 1 and -a 3
+- Fixed false negative on hash-types 4510 and 4710 for hashes with long salts
 - Fixed false negative on hash-types 8900, 15700, 22700, 27700 and 28200 if using the HIP backend
 - Fixed functional error when nonce-error-corrections that were set on the command line in hash-mode 22000/22001 were not accepted
 - Fixed handling of devices in benchmark mode for "kernel build error". Instead of canceling, skip the device and move on to the next