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| /** @file md5.c
| *
| * @brief This file defines the function for md5
| *
| * Copyright (C) 2014-2017, Marvell International Ltd.
| *
| * This software file (the "File") is distributed by Marvell International
| * Ltd. under the terms of the GNU General Public License Version 2, June 1991
| * (the "License"). You may use, redistribute and/or modify this File in
| * accordance with the terms and conditions of the License, a copy of which
| * is available by writing to the Free Software Foundation, Inc.,
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
| * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
| *
| * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
| * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
| * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
| * this warranty disclaimer.
| */
|
| /******************************************************
| Change log:
| 03/07/2014: Initial version
| ******************************************************/
| #include "wltypes.h"
| #include "md5.h"
|
| #include "hostsa_ext_def.h"
| #include "authenticator.h"
|
| /* Constants for wpa_MD5Transform routine.
| */
| #define S11 7
| #define S12 12
| #define S13 17
| #define S14 22
| #define S21 5
| #define S22 9
| #define S23 14
| #define S24 20
| #define S31 4
| #define S32 11
| #define S33 16
| #define S34 23
| #define S41 6
| #define S42 10
| #define S43 15
| #define S44 21
|
| #define Mrvl_MD5_memcpy(utils, output, input, len) memcpy(utils, output, input, len)
| #define Mrvl_MD5_memset(utils, output, value, len) memset(utils, output, value, len)
| #define Encode(utils, output, input, len) memcpy(utils, output, input, len)
|
| static void wpa_MD5Transform(void *priv, UINT32 *state, unsigned int *block);
|
| static const unsigned char PADDING[64] = {
| 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
| };
|
| /* F, G, H and I are basic MD5 functions.
| */
| #define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
| #define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
| #define H(x, y, z) ((x) ^ (y) ^ (z))
| #define I(x, y, z) ((y) ^ ((x) | (~z)))
|
| /* ROTATE_LEFT rotates x left n bits.
| */
| #define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
|
| /* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
| Rotation is separate from addition to prevent recomputation.
| */
| #define FF(a, b, c, d, x, s, ac) { \
| (a) += F ((b), (c), (d)) + (x) + (UINT32)(ac); \
| (a) = ROTATE_LEFT ((a), (s)); \
| (a) += (b);}
|
| #define GG(a, b, c, d, x, s, ac) { \
| (a) += G ((b), (c), (d)) + (x) + (UINT32)(ac); \
| (a) = ROTATE_LEFT ((a), (s)); \
| (a) += (b); \
| }
| #define HH(a, b, c, d, x, s, ac) { \
| (a) += H ((b), (c), (d)) + (x) + (UINT32)(ac); \
| (a) = ROTATE_LEFT ((a), (s)); \
| (a) += (b); \
| }
| #define II(a, b, c, d, x, s, ac) { \
| (a) += I ((b), (c), (d)) + (x) + (UINT32)(ac); \
| (a) = ROTATE_LEFT ((a), (s)); \
| (a) += (b); \
| }
|
| /* MD5 initialization. Begins an MD5 operation, writing a new context.
| */
| void
| wpa_MD5Init(Mrvl_MD5_CTX *context)
| {
| context->count[0] = context->count[1] = 0;
| /* Load magic initialization constants. */
| context->state[0] = 0x67452301;
| context->state[1] = 0xefcdab89;
| context->state[2] = 0x98badcfe;
| context->state[3] = 0x10325476;
| }
|
| /* MD5 block update operation. Continues an MD5 message-digest
| operation, processing another message block, and updating the
| context.
| */
| void
| wpa_MD5Update(void *priv, Mrvl_MD5_CTX *context, UINT8 *input, UINT32 inputLen)
| {
| phostsa_private psapriv = (phostsa_private)priv;
| hostsa_util_fns *util_fns = &psapriv->util_fns;
| unsigned int i, index, partLen;
|
| /* Compute number of bytes mod 64 */
| index = (unsigned int)((context->count[0] >> 3) & 0x3F);
|
| /* Update number of bits */
| if ((context->count[0] += ((UINT32)inputLen << 3))
| < ((UINT32)inputLen << 3)) {
| context->count[1]++;
| }
| context->count[1] += ((UINT32)inputLen >> 29);
|
| partLen = 64 - index;
|
| /* Transform as many times as possible. */
| if (inputLen >= partLen) {
| Mrvl_MD5_memcpy(util_fns, &context->buffer[index], input,
| partLen);
| wpa_MD5Transform((void *)priv, context->state,
| (UINT32 *)context->buffer);
|
| for (i = partLen; i + 63 < inputLen; i += 64) {
| Mrvl_MD5_memcpy(util_fns, context->scratch, (input + i),
| 64);
| wpa_MD5Transform((void *)priv, context->state,
| context->scratch);
| }
| index = 0;
| } else {
| i = 0;
| }
|
| /* Buffer remaining input */
| Mrvl_MD5_memcpy(util_fns, &context->buffer[index], &input[i],
| inputLen - i);
| }
|
| /* MD5 finalization. Ends an MD5 message-digest operation, writing the
| the message digest and zeroizing the context.
| */
| void
| wpa_MD5Final(void *priv, unsigned char digest[16], Mrvl_MD5_CTX *context)
| {
| phostsa_private psapriv = (phostsa_private)priv;
| hostsa_util_fns *util_fns = &psapriv->util_fns;
| unsigned char bits[8];
| unsigned int index, padLen;
|
| /* Save number of bits */
| Encode(util_fns, bits, context->count, 8);
|
| /* Pad out to 56 mod 64. */
| index = (unsigned int)((context->count[0] >> 3) & 0x3f);
| padLen = (index < 56) ? (56 - index) : (120 - index);
| wpa_MD5Update(priv, context, (UINT8 *)PADDING, padLen);
|
| /* Append length (before padding) */
| wpa_MD5Update(priv, context, bits, 8);
|
| /* Store state in digest */
| Encode(util_fns, digest, context->state, 16);
|
| /* Zeroize sensitive information. */
| Mrvl_MD5_memset(util_fns, context, 0, sizeof(*context));
| }
|
| /* MD5 basic transformation. Transforms state based on block.
| */
| static void
| wpa_MD5Transform(void *priv, UINT32 *state, unsigned int *block)
| {
| phostsa_private psapriv = (phostsa_private)priv;
| hostsa_util_fns *util_fns = &psapriv->util_fns;
| UINT32 a = state[0], b = state[1], c = state[2], d = state[3], *x;
|
| /* Decode (x, block, 64); */
| x = block;
|
| /* Round 1 */
| FF(a, b, c, d, x[0], S11, 0xd76aa478); /* 1 */
| FF(d, a, b, c, x[1], S12, 0xe8c7b756); /* 2 */
| FF(c, d, a, b, x[2], S13, 0x242070db); /* 3 */
| FF(b, c, d, a, x[3], S14, 0xc1bdceee); /* 4 */
| FF(a, b, c, d, x[4], S11, 0xf57c0faf); /* 5 */
| FF(d, a, b, c, x[5], S12, 0x4787c62a); /* 6 */
| FF(c, d, a, b, x[6], S13, 0xa8304613); /* 7 */
| FF(b, c, d, a, x[7], S14, 0xfd469501); /* 8 */
| FF(a, b, c, d, x[8], S11, 0x698098d8); /* 9 */
| FF(d, a, b, c, x[9], S12, 0x8b44f7af); /* 10 */
| FF(c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
| FF(b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
| FF(a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
| FF(d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
| FF(c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
| FF(b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
|
| /* Round 2 */
| GG(a, b, c, d, x[1], S21, 0xf61e2562); /* 17 */
| GG(d, a, b, c, x[6], S22, 0xc040b340); /* 18 */
| GG(c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
| GG(b, c, d, a, x[0], S24, 0xe9b6c7aa); /* 20 */
| GG(a, b, c, d, x[5], S21, 0xd62f105d); /* 21 */
| GG(d, a, b, c, x[10], S22, 0x2441453); /* 22 */
| GG(c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
| GG(b, c, d, a, x[4], S24, 0xe7d3fbc8); /* 24 */
| GG(a, b, c, d, x[9], S21, 0x21e1cde6); /* 25 */
| GG(d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
| GG(c, d, a, b, x[3], S23, 0xf4d50d87); /* 27 */
|
| GG(b, c, d, a, x[8], S24, 0x455a14ed); /* 28 */
| GG(a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
| GG(d, a, b, c, x[2], S22, 0xfcefa3f8); /* 30 */
| GG(c, d, a, b, x[7], S23, 0x676f02d9); /* 31 */
| GG(b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
|
| /* Round 3 */
| HH(a, b, c, d, x[5], S31, 0xfffa3942); /* 33 */
| HH(d, a, b, c, x[8], S32, 0x8771f681); /* 34 */
| HH(c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
| HH(b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
| HH(a, b, c, d, x[1], S31, 0xa4beea44); /* 37 */
| HH(d, a, b, c, x[4], S32, 0x4bdecfa9); /* 38 */
| HH(c, d, a, b, x[7], S33, 0xf6bb4b60); /* 39 */
| HH(b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
| HH(a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
| HH(d, a, b, c, x[0], S32, 0xeaa127fa); /* 42 */
| HH(c, d, a, b, x[3], S33, 0xd4ef3085); /* 43 */
| HH(b, c, d, a, x[6], S34, 0x4881d05); /* 44 */
| HH(a, b, c, d, x[9], S31, 0xd9d4d039); /* 45 */
| HH(d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
| HH(c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
| HH(b, c, d, a, x[2], S34, 0xc4ac5665); /* 48 */
|
| /* Round 4 */
| II(a, b, c, d, x[0], S41, 0xf4292244); /* 49 */
| II(d, a, b, c, x[7], S42, 0x432aff97); /* 50 */
| II(c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
| II(b, c, d, a, x[5], S44, 0xfc93a039); /* 52 */
| II(a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
| II(d, a, b, c, x[3], S42, 0x8f0ccc92); /* 54 */
| II(c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
| II(b, c, d, a, x[1], S44, 0x85845dd1); /* 56 */
| II(a, b, c, d, x[8], S41, 0x6fa87e4f); /* 57 */
| II(d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
| II(c, d, a, b, x[6], S43, 0xa3014314); /* 59 */
| II(b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
| II(a, b, c, d, x[4], S41, 0xf7537e82); /* 61 */
| II(d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
| II(c, d, a, b, x[2], S43, 0x2ad7d2bb); /* 63 */
| II(b, c, d, a, x[9], S44, 0xeb86d391); /* 64 */
| state[0] += a;
| state[1] += b;
| state[2] += c;
| state[3] += d;
|
| /* Zeroize sensitive information. */
| Mrvl_MD5_memset(util_fns, x, 0, sizeof(x));
| }
|
|
