mirror of
https://github.com/libretro/RetroArch
synced 2025-03-03 04:14:00 +00:00
Move SHA-1 hashing to hash.c
This commit is contained in:
twinaphex
parent
343097fbd5
commit
d328e0fbd0
2
Makefile
2
Makefile
@ -54,7 +54,7 @@ JOYCONFIG_OBJ = tools/retroarch-joyconfig.o \
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tools/input_common_joyconfig.o
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RETROLAUNCH_OBJ = tools/retrolaunch/main.o \
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tools/retrolaunch/sha1.o \
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hash.o \
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tools/retrolaunch/parser.o \
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tools/retrolaunch/cd_detect.o \
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compat/rarch_fnmatch.o \
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250
hash.c
250
hash.c
@ -13,8 +13,46 @@
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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// SHA256 implementation from bSNES. Written by valditx.
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//
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/*
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* sha1.c
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*
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* Copyright (C) 1998, 2009
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* Paul E. Jones <paulej@packetizer.com>
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* All Rights Reserved
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*
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*****************************************************************************
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* $Id: sha1.c 12 2009-06-22 19:34:25Z paulej $
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*****************************************************************************
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*
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* Description:
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* This file implements the Secure Hashing Standard as defined
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* in FIPS PUB 180-1 published April 17, 1995.
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*
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* The Secure Hashing Standard, which uses the Secure Hashing
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* Algorithm (SHA), produces a 160-bit message digest for a
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* given data stream. In theory, it is highly improbable that
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* two messages will produce the same message digest. Therefore,
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* this algorithm can serve as a means of providing a "fingerprint"
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* for a message.
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*
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* Portability Issues:
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* SHA-1 is defined in terms of 32-bit "words". This code was
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* written with the expectation that the processor has at least
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* a 32-bit machine word size. If the machine word size is larger,
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* the code should still function properly. One caveat to that
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* is that the input functions taking characters and character
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* arrays assume that only 8 bits of information are stored in each
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* character.
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*
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* Caveats:
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* SHA-1 is designed to work with messages less than 2^64 bits
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* long. Although SHA-1 allows a message digest to be generated for
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* messages of any number of bits less than 2^64, this
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* implementation only works with messages with a length that is a
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* multiple of the size of an 8-bit character.
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*
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*/
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#include <string.h>
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#include <stdio.h>
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@ -59,6 +97,8 @@ static const uint32_t T_K[64] = {
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0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2,
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};
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/* SHA256 implementation from bSNES. Written by valditx. */
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struct sha256_ctx
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{
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union
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@ -115,7 +155,7 @@ static void sha256_block(struct sha256_ctx *p)
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p->h[0] += a; p->h[1] += b; p->h[2] += c; p->h[3] += d;
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p->h[4] += e; p->h[5] += f; p->h[6] += g; p->h[7] += h;
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// Next block
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/* Next block */
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p->inlen = 0;
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}
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@ -186,7 +226,7 @@ void sha256_hash(char *out, const uint8_t *in, size_t size)
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}
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#ifndef HAVE_ZLIB
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// Zlib crc32.
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/* Zlib CRC32. */
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static const uint32_t crc32_table[256] = {
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0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
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0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
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@ -248,3 +288,205 @@ uint32_t crc32_calculate(const uint8_t *data, size_t length)
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}
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#endif
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/* SHA-1 implementation. */
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/* Define the circular shift macro */
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#define SHA1CircularShift(bits,word) ((((word) << (bits)) & 0xFFFFFFFF) | ((word) >> (32-(bits))))
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void SHA1Reset(SHA1Context *context)
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{
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context->Length_Low = 0;
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context->Length_High = 0;
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context->Message_Block_Index = 0;
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context->Message_Digest[0] = 0x67452301;
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context->Message_Digest[1] = 0xEFCDAB89;
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context->Message_Digest[2] = 0x98BADCFE;
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context->Message_Digest[3] = 0x10325476;
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context->Message_Digest[4] = 0xC3D2E1F0;
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context->Computed = 0;
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context->Corrupted = 0;
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}
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void SHA1ProcessMessageBlock(SHA1Context *context)
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{
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const unsigned K[] = /* Constants defined in SHA-1 */
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{
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0x5A827999,
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0x6ED9EBA1,
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0x8F1BBCDC,
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0xCA62C1D6
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};
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int t; /* Loop counter */
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unsigned temp; /* Temporary word value */
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unsigned W[80]; /* Word sequence */
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unsigned A, B, C, D, E; /* Word buffers */
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/* Initialize the first 16 words in the array W */
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for(t = 0; t < 16; t++)
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{
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W[t] = ((unsigned) context->Message_Block[t * 4]) << 24;
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W[t] |= ((unsigned) context->Message_Block[t * 4 + 1]) << 16;
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W[t] |= ((unsigned) context->Message_Block[t * 4 + 2]) << 8;
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W[t] |= ((unsigned) context->Message_Block[t * 4 + 3]);
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}
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for(t = 16; t < 80; t++)
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W[t] = SHA1CircularShift(1,W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16]);
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A = context->Message_Digest[0];
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B = context->Message_Digest[1];
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C = context->Message_Digest[2];
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D = context->Message_Digest[3];
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E = context->Message_Digest[4];
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for(t = 0; t < 20; t++)
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{
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temp = SHA1CircularShift(5,A) +
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((B & C) | ((~B) & D)) + E + W[t] + K[0];
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temp &= 0xFFFFFFFF;
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E = D;
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D = C;
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C = SHA1CircularShift(30,B);
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B = A;
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A = temp;
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}
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for(t = 20; t < 40; t++)
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{
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temp = SHA1CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[1];
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temp &= 0xFFFFFFFF;
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E = D;
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D = C;
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C = SHA1CircularShift(30,B);
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B = A;
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A = temp;
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}
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for(t = 40; t < 60; t++)
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{
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temp = SHA1CircularShift(5,A) +
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((B & C) | (B & D) | (C & D)) + E + W[t] + K[2];
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temp &= 0xFFFFFFFF;
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E = D;
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D = C;
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C = SHA1CircularShift(30,B);
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B = A;
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A = temp;
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}
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for(t = 60; t < 80; t++)
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{
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temp = SHA1CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[3];
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temp &= 0xFFFFFFFF;
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E = D;
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D = C;
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C = SHA1CircularShift(30,B);
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B = A;
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A = temp;
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}
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context->Message_Digest[0] =
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(context->Message_Digest[0] + A) & 0xFFFFFFFF;
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context->Message_Digest[1] =
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(context->Message_Digest[1] + B) & 0xFFFFFFFF;
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context->Message_Digest[2] =
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(context->Message_Digest[2] + C) & 0xFFFFFFFF;
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context->Message_Digest[3] =
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(context->Message_Digest[3] + D) & 0xFFFFFFFF;
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context->Message_Digest[4] =
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(context->Message_Digest[4] + E) & 0xFFFFFFFF;
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context->Message_Block_Index = 0;
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}
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void SHA1PadMessage(SHA1Context *context)
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{
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/*
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* Check to see if the current message block is too small to hold
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* the initial padding bits and length. If so, we will pad the
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* block, process it, and then continue padding into a second
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* block.
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*/
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if (context->Message_Block_Index > 55)
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{
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context->Message_Block[context->Message_Block_Index++] = 0x80;
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while(context->Message_Block_Index < 64)
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context->Message_Block[context->Message_Block_Index++] = 0;
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SHA1ProcessMessageBlock(context);
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while(context->Message_Block_Index < 56)
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context->Message_Block[context->Message_Block_Index++] = 0;
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}
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else
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{
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context->Message_Block[context->Message_Block_Index++] = 0x80;
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while(context->Message_Block_Index < 56)
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context->Message_Block[context->Message_Block_Index++] = 0;
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}
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/* Store the message length as the last 8 octets */
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context->Message_Block[56] = (context->Length_High >> 24) & 0xFF;
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context->Message_Block[57] = (context->Length_High >> 16) & 0xFF;
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context->Message_Block[58] = (context->Length_High >> 8) & 0xFF;
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context->Message_Block[59] = (context->Length_High) & 0xFF;
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context->Message_Block[60] = (context->Length_Low >> 24) & 0xFF;
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context->Message_Block[61] = (context->Length_Low >> 16) & 0xFF;
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context->Message_Block[62] = (context->Length_Low >> 8) & 0xFF;
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context->Message_Block[63] = (context->Length_Low) & 0xFF;
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SHA1ProcessMessageBlock(context);
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}
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int SHA1Result(SHA1Context *context)
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{
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if (context->Corrupted)
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return 0;
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if (!context->Computed)
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{
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SHA1PadMessage(context);
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context->Computed = 1;
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}
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return 1;
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}
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void SHA1Input( SHA1Context *context,
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const unsigned char *message_array,
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unsigned length)
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{
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if (!length)
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return;
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if (context->Computed || context->Corrupted)
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{
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context->Corrupted = 1;
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return;
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}
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while(length-- && !context->Corrupted)
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{
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context->Message_Block[context->Message_Block_Index++] =
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(*message_array & 0xFF);
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context->Length_Low += 8;
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/* Force it to 32 bits */
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context->Length_Low &= 0xFFFFFFFF;
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if (context->Length_Low == 0)
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{
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context->Length_High++;
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/* Force it to 32 bits */
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context->Length_High &= 0xFFFFFFFF;
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if (context->Length_High == 0)
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context->Corrupted = 1; /* Message is too long */
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}
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if (context->Message_Block_Index == 64)
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SHA1ProcessMessageBlock(context);
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message_array++;
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}
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}
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42
hash.h
42
hash.h
@ -1,5 +1,6 @@
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/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
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* Copyright (C) 2011-2014 - Daniel De Matteis
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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@ -13,6 +14,29 @@
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* sha1.h
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*
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* Copyright (C) 1998, 2009
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* Paul E. Jones <paulej@packetizer.com>
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* All Rights Reserved
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*
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*****************************************************************************
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* $Id: sha1.h 12 2009-06-22 19:34:25Z paulej $
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*****************************************************************************
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*
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* Description:
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* This class implements the Secure Hashing Standard as defined
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* in FIPS PUB 180-1 published April 17, 1995.
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*
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* Many of the variable names in the SHA1Context, especially the
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* single character names, were used because those were the names
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* used in the publication.
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*
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* Please read the file sha1.c for more information.
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*
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*/
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#ifndef __RARCH_HASH_H
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#define __RARCH_HASH_H
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@ -45,5 +69,23 @@ uint32_t crc32_calculate(const uint8_t *data, size_t length);
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uint32_t crc32_adjust(uint32_t crc, uint8_t data);
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#endif
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typedef struct SHA1Context
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{
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unsigned Message_Digest[5]; /* Message Digest (output) */
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unsigned Length_Low; /* Message length in bits */
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unsigned Length_High; /* Message length in bits */
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unsigned char Message_Block[64]; /* 512-bit message blocks */
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int Message_Block_Index; /* Index into message block array */
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int Computed; /* Is the digest computed? */
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int Corrupted; /* Is the message digest corruped? */
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} SHA1Context;
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void SHA1Reset(SHA1Context *);
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int SHA1Result(SHA1Context *);
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void SHA1Input( SHA1Context *, const unsigned char *, unsigned);
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#endif
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@ -12,7 +12,7 @@
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#include <stdio.h>
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#include <limits.h>
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#include "sha1.h"
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#include "../../hash.h"
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#include "parser.h"
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#include "cd_detect.h"
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#include "../../compat/rarch_fnmatch.h"
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@ -1,242 +0,0 @@
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/*
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* sha1.c
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*
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* Copyright (C) 1998, 2009
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* Paul E. Jones <paulej@packetizer.com>
|
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* All Rights Reserved
|
||||
*
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*****************************************************************************
|
||||
* $Id: sha1.c 12 2009-06-22 19:34:25Z paulej $
|
||||
*****************************************************************************
|
||||
*
|
||||
* Description:
|
||||
* This file implements the Secure Hashing Standard as defined
|
||||
* in FIPS PUB 180-1 published April 17, 1995.
|
||||
*
|
||||
* The Secure Hashing Standard, which uses the Secure Hashing
|
||||
* Algorithm (SHA), produces a 160-bit message digest for a
|
||||
* given data stream. In theory, it is highly improbable that
|
||||
* two messages will produce the same message digest. Therefore,
|
||||
* this algorithm can serve as a means of providing a "fingerprint"
|
||||
* for a message.
|
||||
*
|
||||
* Portability Issues:
|
||||
* SHA-1 is defined in terms of 32-bit "words". This code was
|
||||
* written with the expectation that the processor has at least
|
||||
* a 32-bit machine word size. If the machine word size is larger,
|
||||
* the code should still function properly. One caveat to that
|
||||
* is that the input functions taking characters and character
|
||||
* arrays assume that only 8 bits of information are stored in each
|
||||
* character.
|
||||
*
|
||||
* Caveats:
|
||||
* SHA-1 is designed to work with messages less than 2^64 bits
|
||||
* long. Although SHA-1 allows a message digest to be generated for
|
||||
* messages of any number of bits less than 2^64, this
|
||||
* implementation only works with messages with a length that is a
|
||||
* multiple of the size of an 8-bit character.
|
||||
*
|
||||
*/
|
||||
|
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#include "sha1.h"
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|
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/* Define the circular shift macro */
|
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#define SHA1CircularShift(bits,word) ((((word) << (bits)) & 0xFFFFFFFF) | ((word) >> (32-(bits))))
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void SHA1Reset(SHA1Context *context)
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{
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context->Length_Low = 0;
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context->Length_High = 0;
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context->Message_Block_Index = 0;
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context->Message_Digest[0] = 0x67452301;
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context->Message_Digest[1] = 0xEFCDAB89;
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context->Message_Digest[2] = 0x98BADCFE;
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context->Message_Digest[3] = 0x10325476;
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context->Message_Digest[4] = 0xC3D2E1F0;
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context->Computed = 0;
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context->Corrupted = 0;
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}
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void SHA1ProcessMessageBlock(SHA1Context *context)
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{
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const unsigned K[] = /* Constants defined in SHA-1 */
|
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{
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||||
0x5A827999,
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0x6ED9EBA1,
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0x8F1BBCDC,
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0xCA62C1D6
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};
|
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int t; /* Loop counter */
|
||||
unsigned temp; /* Temporary word value */
|
||||
unsigned W[80]; /* Word sequence */
|
||||
unsigned A, B, C, D, E; /* Word buffers */
|
||||
|
||||
/* Initialize the first 16 words in the array W */
|
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for(t = 0; t < 16; t++)
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{
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W[t] = ((unsigned) context->Message_Block[t * 4]) << 24;
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W[t] |= ((unsigned) context->Message_Block[t * 4 + 1]) << 16;
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W[t] |= ((unsigned) context->Message_Block[t * 4 + 2]) << 8;
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W[t] |= ((unsigned) context->Message_Block[t * 4 + 3]);
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}
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|
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for(t = 16; t < 80; t++)
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W[t] = SHA1CircularShift(1,W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16]);
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A = context->Message_Digest[0];
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B = context->Message_Digest[1];
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C = context->Message_Digest[2];
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D = context->Message_Digest[3];
|
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E = context->Message_Digest[4];
|
||||
|
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for(t = 0; t < 20; t++)
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{
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temp = SHA1CircularShift(5,A) +
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||||
((B & C) | ((~B) & D)) + E + W[t] + K[0];
|
||||
temp &= 0xFFFFFFFF;
|
||||
E = D;
|
||||
D = C;
|
||||
C = SHA1CircularShift(30,B);
|
||||
B = A;
|
||||
A = temp;
|
||||
}
|
||||
|
||||
for(t = 20; t < 40; t++)
|
||||
{
|
||||
temp = SHA1CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[1];
|
||||
temp &= 0xFFFFFFFF;
|
||||
E = D;
|
||||
D = C;
|
||||
C = SHA1CircularShift(30,B);
|
||||
B = A;
|
||||
A = temp;
|
||||
}
|
||||
|
||||
for(t = 40; t < 60; t++)
|
||||
{
|
||||
temp = SHA1CircularShift(5,A) +
|
||||
((B & C) | (B & D) | (C & D)) + E + W[t] + K[2];
|
||||
temp &= 0xFFFFFFFF;
|
||||
E = D;
|
||||
D = C;
|
||||
C = SHA1CircularShift(30,B);
|
||||
B = A;
|
||||
A = temp;
|
||||
}
|
||||
|
||||
for(t = 60; t < 80; t++)
|
||||
{
|
||||
temp = SHA1CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[3];
|
||||
temp &= 0xFFFFFFFF;
|
||||
E = D;
|
||||
D = C;
|
||||
C = SHA1CircularShift(30,B);
|
||||
B = A;
|
||||
A = temp;
|
||||
}
|
||||
|
||||
context->Message_Digest[0] =
|
||||
(context->Message_Digest[0] + A) & 0xFFFFFFFF;
|
||||
context->Message_Digest[1] =
|
||||
(context->Message_Digest[1] + B) & 0xFFFFFFFF;
|
||||
context->Message_Digest[2] =
|
||||
(context->Message_Digest[2] + C) & 0xFFFFFFFF;
|
||||
context->Message_Digest[3] =
|
||||
(context->Message_Digest[3] + D) & 0xFFFFFFFF;
|
||||
context->Message_Digest[4] =
|
||||
(context->Message_Digest[4] + E) & 0xFFFFFFFF;
|
||||
|
||||
context->Message_Block_Index = 0;
|
||||
}
|
||||
|
||||
void SHA1PadMessage(SHA1Context *context)
|
||||
{
|
||||
/*
|
||||
* Check to see if the current message block is too small to hold
|
||||
* the initial padding bits and length. If so, we will pad the
|
||||
* block, process it, and then continue padding into a second
|
||||
* block.
|
||||
*/
|
||||
if (context->Message_Block_Index > 55)
|
||||
{
|
||||
context->Message_Block[context->Message_Block_Index++] = 0x80;
|
||||
while(context->Message_Block_Index < 64)
|
||||
context->Message_Block[context->Message_Block_Index++] = 0;
|
||||
|
||||
SHA1ProcessMessageBlock(context);
|
||||
|
||||
while(context->Message_Block_Index < 56)
|
||||
context->Message_Block[context->Message_Block_Index++] = 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
context->Message_Block[context->Message_Block_Index++] = 0x80;
|
||||
while(context->Message_Block_Index < 56)
|
||||
context->Message_Block[context->Message_Block_Index++] = 0;
|
||||
}
|
||||
|
||||
/* Store the message length as the last 8 octets */
|
||||
context->Message_Block[56] = (context->Length_High >> 24) & 0xFF;
|
||||
context->Message_Block[57] = (context->Length_High >> 16) & 0xFF;
|
||||
context->Message_Block[58] = (context->Length_High >> 8) & 0xFF;
|
||||
context->Message_Block[59] = (context->Length_High) & 0xFF;
|
||||
context->Message_Block[60] = (context->Length_Low >> 24) & 0xFF;
|
||||
context->Message_Block[61] = (context->Length_Low >> 16) & 0xFF;
|
||||
context->Message_Block[62] = (context->Length_Low >> 8) & 0xFF;
|
||||
context->Message_Block[63] = (context->Length_Low) & 0xFF;
|
||||
|
||||
SHA1ProcessMessageBlock(context);
|
||||
}
|
||||
|
||||
int SHA1Result(SHA1Context *context)
|
||||
{
|
||||
if (context->Corrupted)
|
||||
return 0;
|
||||
|
||||
if (!context->Computed)
|
||||
{
|
||||
SHA1PadMessage(context);
|
||||
context->Computed = 1;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
void SHA1Input( SHA1Context *context,
|
||||
const unsigned char *message_array,
|
||||
unsigned length)
|
||||
{
|
||||
if (!length)
|
||||
return;
|
||||
|
||||
if (context->Computed || context->Corrupted)
|
||||
{
|
||||
context->Corrupted = 1;
|
||||
return;
|
||||
}
|
||||
|
||||
while(length-- && !context->Corrupted)
|
||||
{
|
||||
context->Message_Block[context->Message_Block_Index++] =
|
||||
(*message_array & 0xFF);
|
||||
|
||||
context->Length_Low += 8;
|
||||
/* Force it to 32 bits */
|
||||
context->Length_Low &= 0xFFFFFFFF;
|
||||
if (context->Length_Low == 0)
|
||||
{
|
||||
context->Length_High++;
|
||||
/* Force it to 32 bits */
|
||||
context->Length_High &= 0xFFFFFFFF;
|
||||
if (context->Length_High == 0)
|
||||
context->Corrupted = 1; /* Message is too long */
|
||||
}
|
||||
|
||||
if (context->Message_Block_Index == 64)
|
||||
SHA1ProcessMessageBlock(context);
|
||||
|
||||
message_array++;
|
||||
}
|
||||
}
|
||||
@ -1,45 +0,0 @@
|
||||
/*
|
||||
* sha1.h
|
||||
*
|
||||
* Copyright (C) 1998, 2009
|
||||
* Paul E. Jones <paulej@packetizer.com>
|
||||
* All Rights Reserved
|
||||
*
|
||||
*****************************************************************************
|
||||
* $Id: sha1.h 12 2009-06-22 19:34:25Z paulej $
|
||||
*****************************************************************************
|
||||
*
|
||||
* Description:
|
||||
* This class implements the Secure Hashing Standard as defined
|
||||
* in FIPS PUB 180-1 published April 17, 1995.
|
||||
*
|
||||
* Many of the variable names in the SHA1Context, especially the
|
||||
* single character names, were used because those were the names
|
||||
* used in the publication.
|
||||
*
|
||||
* Please read the file sha1.c for more information.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef _SHA1_H_
|
||||
#define _SHA1_H_
|
||||
|
||||
typedef struct SHA1Context
|
||||
{
|
||||
unsigned Message_Digest[5]; /* Message Digest (output) */
|
||||
|
||||
unsigned Length_Low; /* Message length in bits */
|
||||
unsigned Length_High; /* Message length in bits */
|
||||
|
||||
unsigned char Message_Block[64]; /* 512-bit message blocks */
|
||||
int Message_Block_Index; /* Index into message block array */
|
||||
|
||||
int Computed; /* Is the digest computed? */
|
||||
int Corrupted; /* Is the message digest corruped? */
|
||||
} SHA1Context;
|
||||
|
||||
void SHA1Reset(SHA1Context *);
|
||||
int SHA1Result(SHA1Context *);
|
||||
void SHA1Input( SHA1Context *, const unsigned char *, unsigned);
|
||||
|
||||
#endif
|
||||
Loading…
x
Reference in New Issue
Block a user