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-rw-r--r--wolfcrypt/src/md4.c211
1 files changed, 211 insertions, 0 deletions
diff --git a/wolfcrypt/src/md4.c b/wolfcrypt/src/md4.c
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+/* md4.c
+ *
+ * Copyright (C) 2006-2020 wolfSSL Inc.
+ *
+ * This file is part of wolfSSL.
+ *
+ * wolfSSL is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * wolfSSL is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
+ */
+
+
+#ifdef HAVE_CONFIG_H
+ #include <config.h>
+#endif
+
+#include <wolfssl/wolfcrypt/settings.h>
+
+#ifndef NO_MD4
+
+#include <wolfssl/wolfcrypt/md4.h>
+#ifdef NO_INLINE
+ #include <wolfssl/wolfcrypt/misc.h>
+#else
+ #define WOLFSSL_MISC_INCLUDED
+ #include <wolfcrypt/src/misc.c>
+#endif
+
+
+void wc_InitMd4(Md4* md4)
+{
+ md4->digest[0] = 0x67452301L;
+ md4->digest[1] = 0xefcdab89L;
+ md4->digest[2] = 0x98badcfeL;
+ md4->digest[3] = 0x10325476L;
+
+ md4->buffLen = 0;
+ md4->loLen = 0;
+ md4->hiLen = 0;
+}
+
+
+static void Transform(Md4* md4)
+{
+#define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
+#define G(x, y, z) (((x) & (y)) | ((x) & (z)) | ((y) & (z)))
+#define H(x, y, z) ((x) ^ (y) ^ (z))
+
+ /* Copy context->state[] to working vars */
+ word32 A = md4->digest[0];
+ word32 B = md4->digest[1];
+ word32 C = md4->digest[2];
+ word32 D = md4->digest[3];
+
+#define function(a,b,c,d,k,s) a=rotlFixed(a+F(b,c,d)+md4->buffer[k],s);
+ function(A,B,C,D, 0, 3);
+ function(D,A,B,C, 1, 7);
+ function(C,D,A,B, 2,11);
+ function(B,C,D,A, 3,19);
+ function(A,B,C,D, 4, 3);
+ function(D,A,B,C, 5, 7);
+ function(C,D,A,B, 6,11);
+ function(B,C,D,A, 7,19);
+ function(A,B,C,D, 8, 3);
+ function(D,A,B,C, 9, 7);
+ function(C,D,A,B,10,11);
+ function(B,C,D,A,11,19);
+ function(A,B,C,D,12, 3);
+ function(D,A,B,C,13, 7);
+ function(C,D,A,B,14,11);
+ function(B,C,D,A,15,19);
+
+#undef function
+#define function(a,b,c,d,k,s) \
+ a=rotlFixed(a+G(b,c,d)+md4->buffer[k]+0x5a827999,s);
+
+ function(A,B,C,D, 0, 3);
+ function(D,A,B,C, 4, 5);
+ function(C,D,A,B, 8, 9);
+ function(B,C,D,A,12,13);
+ function(A,B,C,D, 1, 3);
+ function(D,A,B,C, 5, 5);
+ function(C,D,A,B, 9, 9);
+ function(B,C,D,A,13,13);
+ function(A,B,C,D, 2, 3);
+ function(D,A,B,C, 6, 5);
+ function(C,D,A,B,10, 9);
+ function(B,C,D,A,14,13);
+ function(A,B,C,D, 3, 3);
+ function(D,A,B,C, 7, 5);
+ function(C,D,A,B,11, 9);
+ function(B,C,D,A,15,13);
+
+#undef function
+#define function(a,b,c,d,k,s) \
+ a=rotlFixed(a+H(b,c,d)+md4->buffer[k]+0x6ed9eba1,s);
+
+ function(A,B,C,D, 0, 3);
+ function(D,A,B,C, 8, 9);
+ function(C,D,A,B, 4,11);
+ function(B,C,D,A,12,15);
+ function(A,B,C,D, 2, 3);
+ function(D,A,B,C,10, 9);
+ function(C,D,A,B, 6,11);
+ function(B,C,D,A,14,15);
+ function(A,B,C,D, 1, 3);
+ function(D,A,B,C, 9, 9);
+ function(C,D,A,B, 5,11);
+ function(B,C,D,A,13,15);
+ function(A,B,C,D, 3, 3);
+ function(D,A,B,C,11, 9);
+ function(C,D,A,B, 7,11);
+ function(B,C,D,A,15,15);
+
+ /* Add the working vars back into digest state[] */
+ md4->digest[0] += A;
+ md4->digest[1] += B;
+ md4->digest[2] += C;
+ md4->digest[3] += D;
+}
+
+
+static WC_INLINE void AddLength(Md4* md4, word32 len)
+{
+ word32 tmp = md4->loLen;
+ if ( (md4->loLen += len) < tmp)
+ md4->hiLen++; /* carry low to high */
+}
+
+
+void wc_Md4Update(Md4* md4, const byte* data, word32 len)
+{
+ /* do block size increments */
+ byte* local = (byte*)md4->buffer;
+
+ while (len) {
+ word32 add = min(len, MD4_BLOCK_SIZE - md4->buffLen);
+ XMEMCPY(&local[md4->buffLen], data, add);
+
+ md4->buffLen += add;
+ data += add;
+ len -= add;
+
+ if (md4->buffLen == MD4_BLOCK_SIZE) {
+ #ifdef BIG_ENDIAN_ORDER
+ ByteReverseWords(md4->buffer, md4->buffer, MD4_BLOCK_SIZE);
+ #endif
+ Transform(md4);
+ AddLength(md4, MD4_BLOCK_SIZE);
+ md4->buffLen = 0;
+ }
+ }
+}
+
+
+void wc_Md4Final(Md4* md4, byte* hash)
+{
+ byte* local = (byte*)md4->buffer;
+
+ AddLength(md4, md4->buffLen); /* before adding pads */
+
+ local[md4->buffLen++] = 0x80; /* add 1 */
+
+ /* pad with zeros */
+ if (md4->buffLen > MD4_PAD_SIZE) {
+ XMEMSET(&local[md4->buffLen], 0, MD4_BLOCK_SIZE - md4->buffLen);
+ md4->buffLen += MD4_BLOCK_SIZE - md4->buffLen;
+
+ #ifdef BIG_ENDIAN_ORDER
+ ByteReverseWords(md4->buffer, md4->buffer, MD4_BLOCK_SIZE);
+ #endif
+ Transform(md4);
+ md4->buffLen = 0;
+ }
+ XMEMSET(&local[md4->buffLen], 0, MD4_PAD_SIZE - md4->buffLen);
+
+ /* put lengths in bits */
+ md4->hiLen = (md4->loLen >> (8*sizeof(md4->loLen) - 3)) +
+ (md4->hiLen << 3);
+ md4->loLen = md4->loLen << 3;
+
+ /* store lengths */
+ #ifdef BIG_ENDIAN_ORDER
+ ByteReverseWords(md4->buffer, md4->buffer, MD4_BLOCK_SIZE);
+ #endif
+ /* ! length ordering dependent on digest endian type ! */
+ XMEMCPY(&local[MD4_PAD_SIZE], &md4->loLen, sizeof(word32));
+ XMEMCPY(&local[MD4_PAD_SIZE + sizeof(word32)], &md4->hiLen, sizeof(word32));
+
+ Transform(md4);
+ #ifdef BIG_ENDIAN_ORDER
+ ByteReverseWords(md4->digest, md4->digest, MD4_DIGEST_SIZE);
+ #endif
+ XMEMCPY(hash, md4->digest, MD4_DIGEST_SIZE);
+
+ wc_InitMd4(md4); /* reset state */
+}
+
+
+#endif /* NO_MD4 */
+
generated by cgit v1.2.3 (git 2.25.1) at 2026-03-11 04:41:47 +0000