diff options
author | Nicolas "Pixel" Noble <pixel@nobis-crew.org> | 2013-12-26 20:41:24 +0100 |
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committer | Nicolas "Pixel" Noble <pixel@nobis-crew.org> | 2013-12-26 20:41:24 +0100 |
commit | 1059e14a4316e47d739fd66e5f148fcd83381f36 (patch) | |
tree | 78f71cec4f36ac2cb081b7d77d0dd1078cef0996 /src | |
parent | d0b856cfbb99b1f1833a18ff556d517a7e3f04d8 (diff) |
Removing duplicated sha1 code.
Diffstat (limited to 'src')
-rw-r--r-- | src/BSHA1.cc | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/src/BSHA1.cc b/src/BSHA1.cc deleted file mode 100644 index 68c7853..0000000 --- a/src/BSHA1.cc +++ /dev/null @@ -1,147 +0,0 @@ -// based of public domain implementation found here: http://svn.ghostscript.com/jbig2dec/trunk/sha1.c - -/* -Test Vectors (from FIPS PUB 180-1) -"abc" - A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D -"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" - 84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1 -A million repetitions of "a" - 34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F -*/ - -#include "BSHA1.h" - -#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits)))) - -/* blk0() and blk() perform the initial expand. */ -/* I got the idea of expanding during the round function from SSLeay */ -/* FIXME: can we do this in an endian-proof way? */ -#ifdef WORDS_BIGENDIAN -#define blk0(i) block->l[i] -#else -#define blk0(i) (block->l[i] = (rol(block->l[i],24)&0xFF00FF00) \ - |(rol(block->l[i],8)&0x00FF00FF)) -#endif -#define blk(i) (block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \ - ^block->l[(i+2)&15]^block->l[i&15],1)) - -/* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */ -#define R0(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30); -#define R1(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30); -#define R2(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30); -#define R3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30); -#define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30); - -/* Hash a single 512-bit block. This is the core of the algorithm. */ -void Balau::SHA1::transform(uint32_t state[5], const uint8_t buffer[64]) -{ - uint32_t a, b, c, d, e; - typedef union { - uint8_t c[64]; - uint32_t l[16]; - } CHAR64LONG16; - CHAR64LONG16* block; - - block = (CHAR64LONG16*)buffer; - - /* Copy m_state[] to working vars */ - a = state[0]; - b = state[1]; - c = state[2]; - d = state[3]; - e = state[4]; - - /* 4 rounds of 20 operations each. Loop unrolled. */ - R0(a,b,c,d,e, 0); R0(e,a,b,c,d, 1); R0(d,e,a,b,c, 2); R0(c,d,e,a,b, 3); - R0(b,c,d,e,a, 4); R0(a,b,c,d,e, 5); R0(e,a,b,c,d, 6); R0(d,e,a,b,c, 7); - R0(c,d,e,a,b, 8); R0(b,c,d,e,a, 9); R0(a,b,c,d,e,10); R0(e,a,b,c,d,11); - R0(d,e,a,b,c,12); R0(c,d,e,a,b,13); R0(b,c,d,e,a,14); R0(a,b,c,d,e,15); - R1(e,a,b,c,d,16); R1(d,e,a,b,c,17); R1(c,d,e,a,b,18); R1(b,c,d,e,a,19); - R2(a,b,c,d,e,20); R2(e,a,b,c,d,21); R2(d,e,a,b,c,22); R2(c,d,e,a,b,23); - R2(b,c,d,e,a,24); R2(a,b,c,d,e,25); R2(e,a,b,c,d,26); R2(d,e,a,b,c,27); - R2(c,d,e,a,b,28); R2(b,c,d,e,a,29); R2(a,b,c,d,e,30); R2(e,a,b,c,d,31); - R2(d,e,a,b,c,32); R2(c,d,e,a,b,33); R2(b,c,d,e,a,34); R2(a,b,c,d,e,35); - R2(e,a,b,c,d,36); R2(d,e,a,b,c,37); R2(c,d,e,a,b,38); R2(b,c,d,e,a,39); - R3(a,b,c,d,e,40); R3(e,a,b,c,d,41); R3(d,e,a,b,c,42); R3(c,d,e,a,b,43); - R3(b,c,d,e,a,44); R3(a,b,c,d,e,45); R3(e,a,b,c,d,46); R3(d,e,a,b,c,47); - R3(c,d,e,a,b,48); R3(b,c,d,e,a,49); R3(a,b,c,d,e,50); R3(e,a,b,c,d,51); - R3(d,e,a,b,c,52); R3(c,d,e,a,b,53); R3(b,c,d,e,a,54); R3(a,b,c,d,e,55); - R3(e,a,b,c,d,56); R3(d,e,a,b,c,57); R3(c,d,e,a,b,58); R3(b,c,d,e,a,59); - R4(a,b,c,d,e,60); R4(e,a,b,c,d,61); R4(d,e,a,b,c,62); R4(c,d,e,a,b,63); - R4(b,c,d,e,a,64); R4(a,b,c,d,e,65); R4(e,a,b,c,d,66); R4(d,e,a,b,c,67); - R4(c,d,e,a,b,68); R4(b,c,d,e,a,69); R4(a,b,c,d,e,70); R4(e,a,b,c,d,71); - R4(d,e,a,b,c,72); R4(c,d,e,a,b,73); R4(b,c,d,e,a,74); R4(a,b,c,d,e,75); - R4(e,a,b,c,d,76); R4(d,e,a,b,c,77); R4(c,d,e,a,b,78); R4(b,c,d,e,a,79); - - /* Add the working vars back into context.state[] */ - state[0] += a; - state[1] += b; - state[2] += c; - state[3] += d; - state[4] += e; - - /* Wipe variables */ - a = b = c = d = e = 0; -} - -/* SHA1Init - Initialize new context */ -void Balau::SHA1::reset() -{ - /* SHA1 initialization constants */ - m_state[0] = 0x67452301; - m_state[1] = 0xEFCDAB89; - m_state[2] = 0x98BADCFE; - m_state[3] = 0x10325476; - m_state[4] = 0xC3D2E1F0; - m_count[0] = m_count[1] = 0; -} - -/* Run your data through this. */ -void Balau::SHA1::update(const uint8_t* data, const size_t len) -{ - size_t i, j; - - j = (m_count[0] >> 3) & 63; - if ((m_count[0] += len << 3) < (len << 3)) m_count[1]++; - m_count[1] += (len >> 29); - if ((j + len) > 63) { - memcpy(&m_buffer[j], data, (i = 64-j)); - transform(m_state, m_buffer); - for ( ; i + 63 < len; i += 64) { - transform(m_state, data + i); - } - j = 0; - } - else i = 0; - memcpy(&m_buffer[j], &data[i], len - i); - -} - -/* Add padding and return the message digest. */ -void Balau::SHA1::final(uint8_t * digest) -{ - uint32_t i; - uint8_t finalcount[8]; - - for (i = 0; i < 8; i++) { - finalcount[i] = (unsigned char)((m_count[(i >= 4 ? 0 : 1)] - >> ((3-(i & 3)) * 8) ) & 255); /* Endian independent */ - } - update((uint8_t *)"\200", 1); - while ((m_count[0] & 504) != 448) { - update((uint8_t *)"\0", 1); - } - update(finalcount, 8); /* Should cause a SHA1_Transform() */ - for (i = 0; i < DIGEST_SIZE; i++) { - digest[i] = (uint8_t) - ((m_state[i>>2] >> ((3-(i & 3)) * 8) ) & 255); - } - - /* Wipe variables */ - i = 0; - memset(m_buffer, 0, 64); - memset(m_state, 0, 20); - memset(m_count, 0, 8); - memset(finalcount, 0, 8); /* SWR */ -} |