--- a/whirl.c	Tue Jun 15 14:34:07 2004 +0000
+++ b/whirl.c	Tue Jun 15 16:47:55 2004 +0000
@@ -0,0 +1,280 @@
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis
+ *
+ * LibTomCrypt is a library that provides various cryptographic
+ * algorithms in a highly modular and flexible manner.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ *
+ * Tom St Denis, [email protected], http://libtomcrypt.org
+ */
+
+/* WHIRLPOOL (using their new sbox) hash function by Tom St Denis */
+
+#include "mycrypt.h"
+
+#ifdef WHIRLPOOL
+
+const struct _hash_descriptor whirlpool_desc =
+{
+    "whirlpool",
+    11,
+    64,
+    64,
+
+    /* DER encoding (not yet supported) */
+    { 0x00 },
+    0,
+
+    &whirlpool_init,
+    &whirlpool_process,
+    &whirlpool_done,
+    &whirlpool_test
+};
+
+/* the sboxes */
+#include "whirltab.c"
+
+/* get a_{i,j} */
+#define GB(a,i,j) ((a[(i) & 7] >> (8 * (j))) & 255)
+
+/* shortcut macro to perform three functions at once */
+#define theta_pi_gamma(a, i)             \
+    SB0(GB(a, i-0, 7)) ^                 \
+    SB1(GB(a, i-1, 6)) ^                 \
+    SB2(GB(a, i-2, 5)) ^                 \
+    SB3(GB(a, i-3, 4)) ^                 \
+    SB4(GB(a, i-4, 3)) ^                 \
+    SB5(GB(a, i-5, 2)) ^                 \
+    SB6(GB(a, i-6, 1)) ^                 \
+    SB7(GB(a, i-7, 0))
+
+#ifdef CLEAN_STACK
+static void _whirlpool_compress(hash_state *md, unsigned char *buf)
+#else
+static void whirlpool_compress(hash_state *md, unsigned char *buf)
+#endif
+{
+   ulong64 K[2][8], T[3][8];
+   int x, y;
+   
+   /* load the block/state */
+   for (x = 0; x < 8; x++) {
+      K[0][x] = md->whirlpool.state[x];
+
+      LOAD64H(T[0][x], buf + (8 * x));
+      T[2][x]  = T[0][x];
+      T[0][x] ^= K[0][x];
+   }
+  
+   /* do rounds 1..10 */
+   for (x = 0; x < 10; x += 2) {
+       /* odd round */
+       /* apply main transform to K[0] into K[1] */
+       for (y = 0; y < 8; y++) {
+           K[1][y] = theta_pi_gamma(K[0], y);
+       }
+       /* xor the constant */
+       K[1][0] ^= cont[x];
+       
+       /* apply main transform to T[0] into T[1] */
+       for (y = 0; y < 8; y++) {
+           T[1][y] = theta_pi_gamma(T[0], y) ^ K[1][y];
+       }
+
+       /* even round */
+       /* apply main transform to K[1] into K[0] */
+       for (y = 0; y < 8; y++) {
+           K[0][y] = theta_pi_gamma(K[1], y);
+       }
+       /* xor the constant */
+       K[0][0] ^= cont[x+1];
+       
+       /* apply main transform to T[0] into T[1] */
+       for (y = 0; y < 8; y++) {
+           T[0][y] = theta_pi_gamma(T[1], y) ^ K[0][y];
+       }
+   }
+   
+   /* store state */
+   for (x = 0; x < 8; x++) {
+      md->whirlpool.state[x] ^= T[0][x] ^ T[2][x];
+   }
+}
+
+
+#ifdef CLEAN_STACK
+static void whirlpool_compress(hash_state *md, unsigned char *buf)
+{
+   _whirlpool_compress(md, buf);
+   burn_stack((5 * 8 * sizeof(ulong64)) + (2 * sizeof(int)));
+}
+#endif
+
+
+void whirlpool_init(hash_state * md)
+{
+   _ARGCHK(md != NULL);
+   zeromem(&md->whirlpool, sizeof(md->whirlpool));
+}
+
+HASH_PROCESS(whirlpool_process, whirlpool_compress, whirlpool, 64)
+
+int whirlpool_done(hash_state * md, unsigned char *hash)
+{
+    int i;
+
+    _ARGCHK(md   != NULL);
+    _ARGCHK(hash != NULL);
+
+    if (md->whirlpool.curlen >= sizeof(md->whirlpool.buf)) {
+       return CRYPT_INVALID_ARG;
+    }
+
+    /* increase the length of the message */
+    md->whirlpool.length += md->whirlpool.curlen * 8;
+
+    /* append the '1' bit */
+    md->whirlpool.buf[md->whirlpool.curlen++] = (unsigned char)0x80;
+
+    /* if the length is currently above 32 bytes we append zeros
+     * then compress.  Then we can fall back to padding zeros and length
+     * encoding like normal.
+     */
+    if (md->whirlpool.curlen > 32) {
+        while (md->whirlpool.curlen < 64) {
+            md->whirlpool.buf[md->whirlpool.curlen++] = (unsigned char)0;
+        }
+        whirlpool_compress(md, md->whirlpool.buf);
+        md->whirlpool.curlen = 0;
+    }
+
+    /* pad upto 56 bytes of zeroes (should be 32 but we only support 64-bit lengths)  */
+    while (md->whirlpool.curlen < 56) {
+        md->whirlpool.buf[md->whirlpool.curlen++] = (unsigned char)0;
+    }
+
+    /* store length */
+    STORE64H(md->whirlpool.length, md->whirlpool.buf+56);
+    whirlpool_compress(md, md->whirlpool.buf);
+
+    /* copy output */
+    for (i = 0; i < 8; i++) {
+        STORE64H(md->whirlpool.state[i], hash+(8*i));
+    }
+#ifdef CLEAN_STACK
+    zeromem(md, sizeof(*md));
+#endif
+    return CRYPT_OK;
+}
+
+
+int  whirlpool_test(void)
+{
+ #ifndef LTC_TEST
+    return CRYPT_NOP;
+ #else    
+  static const struct {
+      int len;
+      unsigned char msg[128], hash[64];
+  } tests[] = {
+  
+  /* NULL Message */
+{
+  0, 
+  { 0x00 },
+  { 0x19, 0xFA, 0x61, 0xD7, 0x55, 0x22, 0xA4, 0x66, 0x9B, 0x44, 0xE3, 0x9C, 0x1D, 0x2E, 0x17, 0x26,
+    0xC5, 0x30, 0x23, 0x21, 0x30, 0xD4, 0x07, 0xF8, 0x9A, 0xFE, 0xE0, 0x96, 0x49, 0x97, 0xF7, 0xA7,
+    0x3E, 0x83, 0xBE, 0x69, 0x8B, 0x28, 0x8F, 0xEB, 0xCF, 0x88, 0xE3, 0xE0, 0x3C, 0x4F, 0x07, 0x57,
+    0xEA, 0x89, 0x64, 0xE5, 0x9B, 0x63, 0xD9, 0x37, 0x08, 0xB1, 0x38, 0xCC, 0x42, 0xA6, 0x6E, 0xB3 }
+},
+
+
+   /* 448-bits of 0 bits */
+{
+
+  56,
+  { 0x00 },
+  { 0x0B, 0x3F, 0x53, 0x78, 0xEB, 0xED, 0x2B, 0xF4, 0xD7, 0xBE, 0x3C, 0xFD, 0x81, 0x8C, 0x1B, 0x03,
+    0xB6, 0xBB, 0x03, 0xD3, 0x46, 0x94, 0x8B, 0x04, 0xF4, 0xF4, 0x0C, 0x72, 0x6F, 0x07, 0x58, 0x70,
+    0x2A, 0x0F, 0x1E, 0x22, 0x58, 0x80, 0xE3, 0x8D, 0xD5, 0xF6, 0xED, 0x6D, 0xE9, 0xB1, 0xE9, 0x61,
+    0xE4, 0x9F, 0xC1, 0x31, 0x8D, 0x7C, 0xB7, 0x48, 0x22, 0xF3, 0xD0, 0xE2, 0xE9, 0xA7, 0xE7, 0xB0 }
+},
+
+   /* 520-bits of 0 bits */
+{
+  65,
+  { 0x00 },
+  { 0x85, 0xE1, 0x24, 0xC4, 0x41, 0x5B, 0xCF, 0x43, 0x19, 0x54, 0x3E, 0x3A, 0x63, 0xFF, 0x57, 0x1D,
+    0x09, 0x35, 0x4C, 0xEE, 0xBE, 0xE1, 0xE3, 0x25, 0x30, 0x8C, 0x90, 0x69, 0xF4, 0x3E, 0x2A, 0xE4,
+    0xD0, 0xE5, 0x1D, 0x4E, 0xB1, 0xE8, 0x64, 0x28, 0x70, 0x19, 0x4E, 0x95, 0x30, 0xD8, 0xD8, 0xAF,
+    0x65, 0x89, 0xD1, 0xBF, 0x69, 0x49, 0xDD, 0xF9, 0x0A, 0x7F, 0x12, 0x08, 0x62, 0x37, 0x95, 0xB9 }
+},
+
+   /* 512-bits, leading set */
+{
+  64,
+  { 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+  { 0x10, 0x3E, 0x00, 0x55, 0xA9, 0xB0, 0x90, 0xE1, 0x1C, 0x8F, 0xDD, 0xEB, 0xBA, 0x06, 0xC0, 0x5A,
+    0xCE, 0x8B, 0x64, 0xB8, 0x96, 0x12, 0x8F, 0x6E, 0xED, 0x30, 0x71, 0xFC, 0xF3, 0xDC, 0x16, 0x94,
+    0x67, 0x78, 0xE0, 0x72, 0x23, 0x23, 0x3F, 0xD1, 0x80, 0xFC, 0x40, 0xCC, 0xDB, 0x84, 0x30, 0xA6,
+    0x40, 0xE3, 0x76, 0x34, 0x27, 0x1E, 0x65, 0x5C, 0xA1, 0x67, 0x4E, 0xBF, 0xF5, 0x07, 0xF8, 0xCB }
+},
+
+   /* 512-bits, leading set of second byte */
+{
+  64,
+  { 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
+  { 0x35, 0x7B, 0x42, 0xEA, 0x79, 0xBC, 0x97, 0x86, 0x97, 0x5A, 0x3C, 0x44, 0x70, 0xAA, 0xB2, 0x3E,
+    0x62, 0x29, 0x79, 0x7B, 0xAD, 0xBD, 0x54, 0x36, 0x5B, 0x54, 0x96, 0xE5, 0x5D, 0x9D, 0xD7, 0x9F,
+    0xE9, 0x62, 0x4F, 0xB4, 0x22, 0x66, 0x93, 0x0A, 0x62, 0x8E, 0xD4, 0xDB, 0x08, 0xF9, 0xDD, 0x35,
+    0xEF, 0x1B, 0xE1, 0x04, 0x53, 0xFC, 0x18, 0xF4, 0x2C, 0x7F, 0x5E, 0x1F, 0x9B, 0xAE, 0x55, 0xE0 }
+},
+
+   /* 512-bits, leading set of last byte */
+{
+  64,
+  { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80 },
+  { 0x8B, 0x39, 0x04, 0xDD, 0x19, 0x81, 0x41, 0x26, 0xFD, 0x02, 0x74, 0xAB, 0x49, 0xC5, 0x97, 0xF6,
+    0xD7, 0x75, 0x33, 0x52, 0xA2, 0xDD, 0x91, 0xFD, 0x8F, 0x9F, 0x54, 0x05, 0x4C, 0x54, 0xBF, 0x0F,
+    0x06, 0xDB, 0x4F, 0xF7, 0x08, 0xA3, 0xA2, 0x8B, 0xC3, 0x7A, 0x92, 0x1E, 0xEE, 0x11, 0xED, 0x7B,
+    0x6A, 0x53, 0x79, 0x32, 0xCC, 0x5E, 0x94, 0xEE, 0x1E, 0xA6, 0x57, 0x60, 0x7E, 0x36, 0xC9, 0xF7 }
+},
+   
+};
+
+  int i;
+  unsigned char tmp[64];
+  hash_state md;
+
+  for (i = 0; i < (int)(sizeof(tests)/sizeof(tests[0])); i++) {
+      whirlpool_init(&md);
+      whirlpool_process(&md, (unsigned char *)tests[i].msg, tests[i].len);
+      whirlpool_done(&md, tmp);
+      if (memcmp(tmp, tests[i].hash, 64) != 0) {
+#if 0      
+         printf("\nFailed test %d\n", i);
+         for (i = 0; i < 64; ) {
+            printf("%02x ", tmp[i]);
+            if (!(++i & 15)) printf("\n");
+         }
+#endif         
+         return CRYPT_FAIL_TESTVECTOR;
+      }
+  }
+  return CRYPT_OK;
+ #endif
+}
+
+
+#endif
+