--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libtomcrypt/src/hashes/blake2s.c	Fri Feb 09 21:44:05 2018 +0800
@@ -0,0 +1,563 @@
+/* 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.
+ */
+
+/*
+   BLAKE2 reference source code package - reference C implementations
+
+   Copyright 2012, Samuel Neves <[email protected]>.  You may use this under the
+   terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
+   your option.  The terms of these licenses can be found at:
+
+   - CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
+   - OpenSSL license   : https://www.openssl.org/source/license.html
+   - Apache 2.0        : http://www.apache.org/licenses/LICENSE-2.0
+
+   More information about the BLAKE2 hash function can be found at
+   https://blake2.net.
+*/
+/* see also https://www.ietf.org/rfc/rfc7693.txt */
+
+#include "tomcrypt.h"
+
+#ifdef LTC_BLAKE2S
+
+enum blake2s_constant {
+   BLAKE2S_BLOCKBYTES = 64,
+   BLAKE2S_OUTBYTES = 32,
+   BLAKE2S_KEYBYTES = 32,
+   BLAKE2S_SALTBYTES = 8,
+   BLAKE2S_PERSONALBYTES = 8,
+   BLAKE2S_PARAM_SIZE = 32
+};
+
+/* param offsets */
+enum {
+   O_DIGEST_LENGTH = 0,
+   O_KEY_LENGTH = 1,
+   O_FANOUT = 2,
+   O_DEPTH = 3,
+   O_LEAF_LENGTH = 4,
+   O_NODE_OFFSET = 8,
+   O_XOF_LENGTH = 12,
+   O_NODE_DEPTH = 14,
+   O_INNER_LENGTH = 15,
+   O_SALT = 16,
+   O_PERSONAL = 24
+};
+
+/*
+struct blake2s_param {
+   unsigned char digest_length;
+   unsigned char key_length;
+   unsigned char fanout;
+   unsigned char depth;
+   ulong32 leaf_length;
+   ulong32 node_offset;
+   ushort16 xof_length;
+   unsigned char node_depth;
+   unsigned char inner_length;
+   unsigned char salt[BLAKE2S_SALTBYTES];
+   unsigned char personal[BLAKE2S_PERSONALBYTES];
+};
+*/
+
+const struct ltc_hash_descriptor blake2s_128_desc =
+{
+    "blake2s-128",
+    21,
+    16,
+    64,
+    { 1, 3, 6, 1, 4, 1, 1722, 12, 2, 2, 4 },
+    11,
+    &blake2s_128_init,
+    &blake2s_process,
+    &blake2s_done,
+    &blake2s_128_test,
+    NULL
+};
+
+const struct ltc_hash_descriptor blake2s_160_desc =
+{
+    "blake2s-160",
+    22,
+    20,
+    64,
+    { 1, 3, 6, 1, 4, 1, 1722, 12, 2, 2, 5 },
+    11,
+    &blake2s_160_init,
+    &blake2s_process,
+    &blake2s_done,
+    &blake2s_160_test,
+    NULL
+};
+
+const struct ltc_hash_descriptor blake2s_224_desc =
+{
+    "blake2s-224",
+    23,
+    28,
+    64,
+    { 1, 3, 6, 1, 4, 1, 1722, 12, 2, 2, 7 },
+    11,
+    &blake2s_224_init,
+    &blake2s_process,
+    &blake2s_done,
+    &blake2s_224_test,
+    NULL
+};
+
+const struct ltc_hash_descriptor blake2s_256_desc =
+{
+    "blake2s-256",
+    24,
+    32,
+    64,
+    { 1, 3, 6, 1, 4, 1, 1722, 12, 2, 2, 8 },
+    11,
+    &blake2s_256_init,
+    &blake2s_process,
+    &blake2s_done,
+    &blake2s_256_test,
+    NULL
+};
+
+static const ulong32 blake2s_IV[8] = {
+    0x6A09E667UL, 0xBB67AE85UL, 0x3C6EF372UL, 0xA54FF53AUL,
+    0x510E527FUL, 0x9B05688CUL, 0x1F83D9ABUL, 0x5BE0CD19UL
+};
+
+static const unsigned char blake2s_sigma[10][16] = {
+    { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
+    { 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 },
+    { 11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4 },
+    { 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8 },
+    { 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13 },
+    { 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9 },
+    { 12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11 },
+    { 13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10 },
+    { 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5 },
+    { 10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13, 0 },
+};
+
+static void blake2s_set_lastnode(hash_state *md) { md->blake2s.f[1] = 0xffffffffUL; }
+
+/* Some helper functions, not necessarily useful */
+static int blake2s_is_lastblock(const hash_state *md) { return md->blake2s.f[0] != 0; }
+
+static void blake2s_set_lastblock(hash_state *md)
+{
+   if (md->blake2s.last_node)
+      blake2s_set_lastnode(md);
+
+   md->blake2s.f[0] = 0xffffffffUL;
+}
+
+static void blake2s_increment_counter(hash_state *md, const ulong32 inc)
+{
+   md->blake2s.t[0] += inc;
+   if (md->blake2s.t[0] < inc) md->blake2s.t[1]++;
+}
+
+static int blake2s_init0(hash_state *md)
+{
+   int i;
+   XMEMSET(&md->blake2s, 0, sizeof(struct blake2s_state));
+
+   for (i = 0; i < 8; ++i)
+      md->blake2s.h[i] = blake2s_IV[i];
+
+   return CRYPT_OK;
+}
+
+/* init2 xors IV with input parameter block */
+static int blake2s_init_param(hash_state *md, const unsigned char *P)
+{
+   unsigned long i;
+
+   blake2s_init0(md);
+
+   /* IV XOR ParamBlock */
+   for (i = 0; i < 8; ++i) {
+      ulong32 tmp;
+      LOAD32L(tmp, P + i * 4);
+      md->blake2s.h[i] ^= tmp;
+   }
+
+   md->blake2s.outlen = P[O_DIGEST_LENGTH];
+   return CRYPT_OK;
+}
+
+int blake2s_init(hash_state *md, unsigned long outlen, const unsigned char *key, unsigned long keylen)
+{
+   unsigned char P[BLAKE2S_PARAM_SIZE];
+   int err;
+
+   LTC_ARGCHK(md != NULL);
+
+   if ((!outlen) || (outlen > BLAKE2S_OUTBYTES))
+      return CRYPT_INVALID_ARG;
+
+   if ((key && !keylen) || (keylen && !key) || (keylen > BLAKE2S_KEYBYTES))
+      return CRYPT_INVALID_ARG;
+
+   XMEMSET(P, 0, sizeof(P));
+
+   P[O_DIGEST_LENGTH] = (unsigned char)outlen;
+   P[O_KEY_LENGTH] = (unsigned char)keylen;
+   P[O_FANOUT] = 1;
+   P[O_DEPTH] = 1;
+
+   err = blake2s_init_param(md, P);
+   if (err != CRYPT_OK) return err;
+
+   if (key) {
+      unsigned char block[BLAKE2S_BLOCKBYTES];
+
+      XMEMSET(block, 0, BLAKE2S_BLOCKBYTES);
+      XMEMCPY(block, key, keylen);
+      blake2s_process(md, block, BLAKE2S_BLOCKBYTES);
+
+#ifdef LTC_CLEAN_STACK
+      zeromem(block, sizeof(block));
+#endif
+   }
+   return CRYPT_OK;
+}
+
+int blake2s_128_init(hash_state *md) { return blake2s_init(md, 16, NULL, 0); }
+
+int blake2s_160_init(hash_state *md) { return blake2s_init(md, 20, NULL, 0); }
+
+int blake2s_224_init(hash_state *md) { return blake2s_init(md, 28, NULL, 0); }
+
+int blake2s_256_init(hash_state *md) { return blake2s_init(md, 32, NULL, 0); }
+
+#define G(r, i, a, b, c, d)                                                                                            \
+   do {                                                                                                                \
+      a = a + b + m[blake2s_sigma[r][2 * i + 0]];                                                                      \
+      d = ROR(d ^ a, 16);                                                                                              \
+      c = c + d;                                                                                                       \
+      b = ROR(b ^ c, 12);                                                                                              \
+      a = a + b + m[blake2s_sigma[r][2 * i + 1]];                                                                      \
+      d = ROR(d ^ a, 8);                                                                                               \
+      c = c + d;                                                                                                       \
+      b = ROR(b ^ c, 7);                                                                                               \
+   } while (0)
+#define ROUND(r)                                                                                                       \
+   do {                                                                                                                \
+      G(r, 0, v[0], v[4], v[8], v[12]);                                                                                \
+      G(r, 1, v[1], v[5], v[9], v[13]);                                                                                \
+      G(r, 2, v[2], v[6], v[10], v[14]);                                                                               \
+      G(r, 3, v[3], v[7], v[11], v[15]);                                                                               \
+      G(r, 4, v[0], v[5], v[10], v[15]);                                                                               \
+      G(r, 5, v[1], v[6], v[11], v[12]);                                                                               \
+      G(r, 6, v[2], v[7], v[8], v[13]);                                                                                \
+      G(r, 7, v[3], v[4], v[9], v[14]);                                                                                \
+   } while (0)
+
+#ifdef LTC_CLEAN_STACK
+static int _blake2s_compress(hash_state *md, const unsigned char *buf)
+#else
+static int blake2s_compress(hash_state *md, const unsigned char *buf)
+#endif
+{
+   unsigned long i;
+   ulong32 m[16];
+   ulong32 v[16];
+
+   for (i = 0; i < 16; ++i) {
+      LOAD32L(m[i], buf + i * sizeof(m[i]));
+   }
+
+   for (i = 0; i < 8; ++i)
+      v[i] = md->blake2s.h[i];
+
+   v[8] = blake2s_IV[0];
+   v[9] = blake2s_IV[1];
+   v[10] = blake2s_IV[2];
+   v[11] = blake2s_IV[3];
+   v[12] = md->blake2s.t[0] ^ blake2s_IV[4];
+   v[13] = md->blake2s.t[1] ^ blake2s_IV[5];
+   v[14] = md->blake2s.f[0] ^ blake2s_IV[6];
+   v[15] = md->blake2s.f[1] ^ blake2s_IV[7];
+
+   ROUND(0);
+   ROUND(1);
+   ROUND(2);
+   ROUND(3);
+   ROUND(4);
+   ROUND(5);
+   ROUND(6);
+   ROUND(7);
+   ROUND(8);
+   ROUND(9);
+
+   for (i = 0; i < 8; ++i)
+      md->blake2s.h[i] = md->blake2s.h[i] ^ v[i] ^ v[i + 8];
+
+   return CRYPT_OK;
+}
+#undef G
+#undef ROUND
+
+#ifdef LTC_CLEAN_STACK
+static int blake2s_compress(hash_state *md, const unsigned char *buf)
+{
+   int err;
+   err = _blake2s_compress(md, buf);
+   burn_stack(sizeof(ulong32) * (32) + sizeof(unsigned long));
+   return err;
+}
+#endif
+
+int blake2s_process(hash_state *md, const unsigned char *in, unsigned long inlen)
+{
+   LTC_ARGCHK(md != NULL);
+   LTC_ARGCHK(in != NULL);
+
+   if (md->blake2s.curlen > sizeof(md->blake2s.buf)) {
+      return CRYPT_INVALID_ARG;
+   }
+
+   if (inlen > 0) {
+      unsigned long left = md->blake2s.curlen;
+      unsigned long fill = BLAKE2S_BLOCKBYTES - left;
+      if (inlen > fill) {
+         md->blake2s.curlen = 0;
+         XMEMCPY(md->blake2s.buf + (left % sizeof(md->blake2s.buf)), in, fill); /* Fill buffer */
+         blake2s_increment_counter(md, BLAKE2S_BLOCKBYTES);
+         blake2s_compress(md, md->blake2s.buf); /* Compress */
+         in += fill;
+         inlen -= fill;
+         while (inlen > BLAKE2S_BLOCKBYTES) {
+            blake2s_increment_counter(md, BLAKE2S_BLOCKBYTES);
+            blake2s_compress(md, in);
+            in += BLAKE2S_BLOCKBYTES;
+            inlen -= BLAKE2S_BLOCKBYTES;
+         }
+      }
+      XMEMCPY(md->blake2s.buf + md->blake2s.curlen, in, inlen);
+      md->blake2s.curlen += inlen;
+   }
+   return CRYPT_OK;
+}
+
+int blake2s_done(hash_state *md, unsigned char *out)
+{
+   unsigned char buffer[BLAKE2S_OUTBYTES] = { 0 };
+   unsigned long i;
+
+   LTC_ARGCHK(md != NULL);
+   LTC_ARGCHK(out != NULL);
+
+   /* if(md->blake2s.outlen != outlen) return CRYPT_INVALID_ARG; */
+
+   if (blake2s_is_lastblock(md))
+      return CRYPT_ERROR;
+
+   blake2s_increment_counter(md, md->blake2s.curlen);
+   blake2s_set_lastblock(md);
+   XMEMSET(md->blake2s.buf + md->blake2s.curlen, 0, BLAKE2S_BLOCKBYTES - md->blake2s.curlen); /* Padding */
+   blake2s_compress(md, md->blake2s.buf);
+
+   for (i = 0; i < 8; ++i) /* Output full hash to temp buffer */
+      STORE32L(md->blake2s.h[i], buffer + i * 4);
+
+   XMEMCPY(out, buffer, md->blake2s.outlen);
+   zeromem(md, sizeof(hash_state));
+#ifdef LTC_CLEAN_STACK
+   zeromem(buffer, sizeof(buffer));
+#endif
+   return CRYPT_OK;
+}
+
+/**
+  Self-test the hash
+  @return CRYPT_OK if successful, CRYPT_NOP if self-tests have been disabled
+*/
+int blake2s_256_test(void)
+{
+#ifndef LTC_TEST
+   return CRYPT_NOP;
+#else
+   static const struct {
+      const char *msg;
+      unsigned char hash[32];
+  } tests[] = {
+    { "",
+      { 0x69, 0x21, 0x7a, 0x30, 0x79, 0x90, 0x80, 0x94,
+        0xe1, 0x11, 0x21, 0xd0, 0x42, 0x35, 0x4a, 0x7c,
+        0x1f, 0x55, 0xb6, 0x48, 0x2c, 0xa1, 0xa5, 0x1e,
+        0x1b, 0x25, 0x0d, 0xfd, 0x1e, 0xd0, 0xee, 0xf9 } },
+    { "abc",
+      { 0x50, 0x8c, 0x5e, 0x8c, 0x32, 0x7c, 0x14, 0xe2,
+        0xe1, 0xa7, 0x2b, 0xa3, 0x4e, 0xeb, 0x45, 0x2f,
+        0x37, 0x45, 0x8b, 0x20, 0x9e, 0xd6, 0x3a, 0x29,
+        0x4d, 0x99, 0x9b, 0x4c, 0x86, 0x67, 0x59, 0x82 } },
+    { "12345678901234567890123456789012345678901234567890"
+      "12345678901234567890123456789012345678901234567890"
+      "12345678901234567890123456789012345678901234567890"
+      "12345678901234567890123456789012345678901234567890"
+      "12345678901234567890123456789012345678901234567890"
+      "12345678901234567890123456789012345678901234567890",
+      { 0xa3, 0x78, 0x8b, 0x5b, 0x59, 0xee, 0xe4, 0x41,
+        0x95, 0x23, 0x58, 0x00, 0xa4, 0xf9, 0xfa, 0x41,
+        0x86, 0x0c, 0x7b, 0x1c, 0x35, 0xa2, 0x42, 0x70,
+        0x50, 0x80, 0x79, 0x56, 0xe3, 0xbe, 0x31, 0x74 } },
+
+    { NULL, { 0 } }
+  };
+
+   int i;
+   unsigned char tmp[32];
+   hash_state md;
+
+   for (i = 0; tests[i].msg != NULL; i++) {
+      blake2s_256_init(&md);
+      blake2s_process(&md, (unsigned char *)tests[i].msg, (unsigned long)strlen(tests[i].msg));
+      blake2s_done(&md, tmp);
+      if (compare_testvector(tmp, sizeof(tmp), tests[i].hash, sizeof(tests[i].hash), "BLAKE2S_256", i)) {
+         return CRYPT_FAIL_TESTVECTOR;
+      }
+
+   }
+   return CRYPT_OK;
+#endif
+}
+
+/**
+  Self-test the hash
+  @return CRYPT_OK if successful, CRYPT_NOP if self-tests have been disabled
+*/
+int blake2s_224_test(void)
+{
+#ifndef LTC_TEST
+   return CRYPT_NOP;
+#else
+   static const struct {
+      const char *msg;
+      unsigned char hash[28];
+  } tests[] = {
+    { "",
+      { 0x1f, 0xa1, 0x29, 0x1e, 0x65, 0x24, 0x8b, 0x37,
+        0xb3, 0x43, 0x34, 0x75, 0xb2, 0xa0, 0xdd, 0x63,
+        0xd5, 0x4a, 0x11, 0xec, 0xc4, 0xe3, 0xe0, 0x34,
+        0xe7, 0xbc, 0x1e, 0xf4 } },
+    { "abc",
+      { 0x0b, 0x03, 0x3f, 0xc2, 0x26, 0xdf, 0x7a, 0xbd,
+        0xe2, 0x9f, 0x67, 0xa0, 0x5d, 0x3d, 0xc6, 0x2c,
+        0xf2, 0x71, 0xef, 0x3d, 0xfe, 0xa4, 0xd3, 0x87,
+        0x40, 0x7f, 0xbd, 0x55 } },
+
+    { NULL, { 0 } }
+  };
+
+   int i;
+   unsigned char tmp[28];
+   hash_state md;
+
+   for (i = 0; tests[i].msg != NULL; i++) {
+      blake2s_224_init(&md);
+      blake2s_process(&md, (unsigned char *)tests[i].msg, (unsigned long)strlen(tests[i].msg));
+      blake2s_done(&md, tmp);
+      if (compare_testvector(tmp, sizeof(tmp), tests[i].hash, sizeof(tests[i].hash), "BLAKE2S_224", i)) {
+         return CRYPT_FAIL_TESTVECTOR;
+      }
+
+   }
+   return CRYPT_OK;
+#endif
+}
+
+/**
+  Self-test the hash
+  @return CRYPT_OK if successful, CRYPT_NOP if self-tests have been disabled
+*/
+int blake2s_160_test(void)
+{
+#ifndef LTC_TEST
+   return CRYPT_NOP;
+#else
+   static const struct {
+      const char *msg;
+      unsigned char hash[20];
+  } tests[] = {
+    { "",
+      { 0x35, 0x4c, 0x9c, 0x33, 0xf7, 0x35, 0x96, 0x24,
+        0x18, 0xbd, 0xac, 0xb9, 0x47, 0x98, 0x73, 0x42,
+        0x9c, 0x34, 0x91, 0x6f} },
+    { "abc",
+      { 0x5a, 0xe3, 0xb9, 0x9b, 0xe2, 0x9b, 0x01, 0x83,
+        0x4c, 0x3b, 0x50, 0x85, 0x21, 0xed, 0xe6, 0x04,
+        0x38, 0xf8, 0xde, 0x17 } },
+
+    { NULL, { 0 } }
+  };
+
+   int i;
+   unsigned char tmp[20];
+   hash_state md;
+
+   for (i = 0; tests[i].msg != NULL; i++) {
+      blake2s_160_init(&md);
+      blake2s_process(&md, (unsigned char *)tests[i].msg, (unsigned long)strlen(tests[i].msg));
+      blake2s_done(&md, tmp);
+      if (compare_testvector(tmp, sizeof(tmp), tests[i].hash, sizeof(tests[i].hash), "BLAKE2S_160", i)) {
+         return CRYPT_FAIL_TESTVECTOR;
+      }
+
+   }
+   return CRYPT_OK;
+#endif
+}
+
+/**
+  Self-test the hash
+  @return CRYPT_OK if successful, CRYPT_NOP if self-tests have been disabled
+*/
+int blake2s_128_test(void)
+{
+#ifndef LTC_TEST
+   return CRYPT_NOP;
+#else
+   static const struct {
+      const char *msg;
+      unsigned char hash[16];
+  } tests[] = {
+    { "",
+      { 0x64, 0x55, 0x0d, 0x6f, 0xfe, 0x2c, 0x0a, 0x01,
+        0xa1, 0x4a, 0xba, 0x1e, 0xad, 0xe0, 0x20, 0x0c } },
+    { "abc",
+      { 0xaa, 0x49, 0x38, 0x11, 0x9b, 0x1d, 0xc7, 0xb8,
+        0x7c, 0xba, 0xd0, 0xff, 0xd2, 0x00, 0xd0, 0xae } },
+
+    { NULL, { 0 } }
+  };
+
+   int i;
+   unsigned char tmp[16];
+   hash_state md;
+
+   for (i = 0; tests[i].msg != NULL; i++) {
+      blake2s_128_init(&md);
+      blake2s_process(&md, (unsigned char *)tests[i].msg, (unsigned long)strlen(tests[i].msg));
+      blake2s_done(&md, tmp);
+      if (compare_testvector(tmp, sizeof(tmp), tests[i].hash, sizeof(tests[i].hash), "BLAKE2S_128", i)) {
+         return CRYPT_FAIL_TESTVECTOR;
+      }
+   }
+   return CRYPT_OK;
+#endif
+}
+
+#endif
+
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */