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Diffstat (limited to 'src/vppinfra/md5.c')
| -rw-r--r-- | src/vppinfra/md5.c | 317 |
1 files changed, 0 insertions, 317 deletions
diff --git a/src/vppinfra/md5.c b/src/vppinfra/md5.c deleted file mode 100644 index 9ac1efc708d..00000000000 --- a/src/vppinfra/md5.c +++ /dev/null @@ -1,317 +0,0 @@ -/* - * Copyright (c) 2015 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -/* MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm */ - -/* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All -rights reserved. - -License to copy and use this software is granted provided that it -is identified as the "RSA Data Security, Inc. MD5 Message-Digest -Algorithm" in all material mentioning or referencing this software -or this function. - -License is also granted to make and use derivative works provided -that such works are identified as "derived from the RSA Data -Security, Inc. MD5 Message-Digest Algorithm" in all material -mentioning or referencing the derived work. - -RSA Data Security, Inc. makes no representations concerning either -the merchantability of this software or the suitability of this -software for any particular purpose. It is provided "as is" -without express or implied warranty of any kind. - -These notices must be retained in any copies of any part of this -documentation and/or software. - */ - -#include <vppinfra/string.h> /* for memset */ -#include <vppinfra/byte_order.h> -#include <vppinfra/md5.h> - -/* F, G, H and I are basic MD5 functions. */ -#define F(b, c, d) (d ^ (b & (c ^ d))) -#define G(b, c, d) F (d, b, c) -#define H(b, c, d) (b ^ c ^ d) -#define I(b, c, d) (c ^ (b | ~d)) - -/* 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) \ -do { \ - a += F (b, c, d) + x + ac; \ - a = ROTATE_LEFT (a, s); \ - a += b; \ -} while (0) - -#define GG(a,b,c,d,x,s,ac) \ -do { \ - a += G (b, c, d) + x + ac; \ - a = ROTATE_LEFT (a, s); \ - a += b; \ -} while (0) - -#define HH(a,b,c,d,x,s,ac) \ -do { \ - a += H (b, c, d) + x + ac; \ - a = ROTATE_LEFT (a, s); \ - a += b; \ -} while (0) - -#define II(a,b,c,d,x,s,ac) \ -do { \ - a += I (b, c, d) + x + ac; \ - a = ROTATE_LEFT (a, s); \ - a += b; \ -} while (0) - -#undef _ - -/* MD5 basic transformation. Transforms state based on block. */ -static void -md5_transform (md5_context_t * m, u32 * data, u32 * result, int zero_buffer) -{ - u32 a = m->state[0], b = m->state[1], c = m->state[2], d = m->state[3]; - u32 *x = data; - -/* Constants for 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 - - /* Round 1 */ - FF (a, b, c, d, clib_host_to_little_u32 (x[0]), S11, 0xd76aa478); /* 1 */ - FF (d, a, b, c, clib_host_to_little_u32 (x[1]), S12, 0xe8c7b756); /* 2 */ - FF (c, d, a, b, clib_host_to_little_u32 (x[2]), S13, 0x242070db); /* 3 */ - FF (b, c, d, a, clib_host_to_little_u32 (x[3]), S14, 0xc1bdceee); /* 4 */ - FF (a, b, c, d, clib_host_to_little_u32 (x[4]), S11, 0xf57c0faf); /* 5 */ - FF (d, a, b, c, clib_host_to_little_u32 (x[5]), S12, 0x4787c62a); /* 6 */ - FF (c, d, a, b, clib_host_to_little_u32 (x[6]), S13, 0xa8304613); /* 7 */ - FF (b, c, d, a, clib_host_to_little_u32 (x[7]), S14, 0xfd469501); /* 8 */ - FF (a, b, c, d, clib_host_to_little_u32 (x[8]), S11, 0x698098d8); /* 9 */ - FF (d, a, b, c, clib_host_to_little_u32 (x[9]), S12, 0x8b44f7af); /* 10 */ - FF (c, d, a, b, clib_host_to_little_u32 (x[10]), S13, 0xffff5bb1); /* 11 */ - FF (b, c, d, a, clib_host_to_little_u32 (x[11]), S14, 0x895cd7be); /* 12 */ - FF (a, b, c, d, clib_host_to_little_u32 (x[12]), S11, 0x6b901122); /* 13 */ - FF (d, a, b, c, clib_host_to_little_u32 (x[13]), S12, 0xfd987193); /* 14 */ - FF (c, d, a, b, clib_host_to_little_u32 (x[14]), S13, 0xa679438e); /* 15 */ - FF (b, c, d, a, clib_host_to_little_u32 (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, 0x02441453); /* 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, 0x04881d05); /* 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 */ - - a += m->state[0]; - b += m->state[1]; - c += m->state[2]; - d += m->state[3]; - - if (result) - { - result[0] = clib_host_to_little_u32 (a); - result[1] = clib_host_to_little_u32 (b); - result[2] = clib_host_to_little_u32 (c); - result[3] = clib_host_to_little_u32 (d); - } - else - { - m->state[0] = a; - m->state[1] = b; - m->state[2] = c; - m->state[3] = d; - } - - /* Zero sensitive information. */ - if (result) - memset (m, ~0, sizeof (m[0])); - else if (zero_buffer) - memset (m->input_buffer.b8, 0, sizeof (m->input_buffer)); -} - -/* MD5 initialization. Begins an MD5 operation, writing a new context. */ -void -md5_init (md5_context_t * c) -{ - memset (c, 0, sizeof (c[0])); - - /* Load magic initialization constants. */ - c->state[0] = 0x67452301; - c->state[1] = 0xefcdab89; - c->state[2] = 0x98badcfe; - c->state[3] = 0x10325476; -} - -always_inline void __attribute__ ((unused)) -md5_fill_buffer_aligned (md5_context_t * c, u32 * d32) -{ - int i; - for (i = 0; i < ARRAY_LEN (c->input_buffer.b32); i++) - c->input_buffer.b32[i] = d32[i]; -} - -/* MD5 block update operation. Continues an MD5 message-digest - operation, processing another message block, and updating the - context. - */ -void -md5_add (md5_context_t * c, void *data, int data_bytes) -{ - u32 data_bytes_left; - void *d; - - if (data_bytes == 0) - return; - - d = data; - data_bytes_left = data_bytes; - - if ((pointer_to_uword (d) % sizeof (u32)) == 0 - && (c->n_bits % BITS (c->input_buffer)) == 0 - && data_bytes >= sizeof (c->input_buffer)) - { - int is_last_iteration; - /* Fast aligned version. */ - do - { - data_bytes_left -= sizeof (c->input_buffer); - is_last_iteration = data_bytes_left < sizeof (c->input_buffer); - md5_transform (c, d, /* result */ 0, /* zero_buffer */ - is_last_iteration); - d += sizeof (c->input_buffer); - } - while (!is_last_iteration); - } - - /* Slow unaligned version. */ - { - int bi; - u8 *d8 = d; - - bi = (c->n_bits / BITS (u8)) % ARRAY_LEN (c->input_buffer.b8); - - while (data_bytes_left > 0) - { - c->input_buffer.b8[bi] = d8[0]; - data_bytes_left -= 1; - d8++; - bi++; - if (bi == ARRAY_LEN (c->input_buffer.b8)) - { - bi = 0; - md5_transform (c, c->input_buffer.b32, - /* result */ 0, - /* zero_buffer */ 1); - } - } - } - - c->n_bits += data_bytes * BITS (u8); -} - -void -md5_finish (md5_context_t * c, u8 * digest) -{ - u64 n_bits_save; - int bi, n_pad; - static u8 padding[sizeof (c->input_buffer)] = { 0x80, 0, }; - - n_bits_save = c->n_bits; - bi = (n_bits_save / BITS (u8)) % ARRAY_LEN (c->input_buffer.b8); - - n_pad = sizeof (c->input_buffer) - (bi + sizeof (u64)); - if (n_pad <= 0) - n_pad += sizeof (c->input_buffer); - md5_add (c, padding, n_pad); - - c->input_buffer.b64[ARRAY_LEN (c->input_buffer.b64) - 1] - = clib_host_to_little_u64 (n_bits_save); - - md5_transform (c, c->input_buffer.b32, (u32 *) digest, - /* zero_buffer */ 1); -} - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |