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author | Jonas Smedegaard <dr@jones.dk> | 2017-06-24 09:21:37 +0200 |
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committer | Jonas Smedegaard <dr@jones.dk> | 2017-06-24 09:21:37 +0200 |
commit | 3d39f109ba8ea7ae9778c58bd1665b9e8e0f45cb (patch) | |
tree | 9a5684babcd16d302fbe59c56b6045660ad62488 /louloulibs/utils/sha1.cpp | |
parent | f9cee98aacd6aea8ccb7f5677b4ff1e1e234e4d1 (diff) | |
parent | c21cbbf9667991d2b928562a9c199e625d3f9bba (diff) | |
download | biboumi-3d39f109ba8ea7ae9778c58bd1665b9e8e0f45cb.tar.gz biboumi-3d39f109ba8ea7ae9778c58bd1665b9e8e0f45cb.tar.bz2 biboumi-3d39f109ba8ea7ae9778c58bd1665b9e8e0f45cb.tar.xz biboumi-3d39f109ba8ea7ae9778c58bd1665b9e8e0f45cb.zip |
Updated version 5.0 from 'upstream/5.0'
with Debian dir 2ae31d03ffb1d79153a692af23c7b2b097cc4b2b
Diffstat (limited to 'louloulibs/utils/sha1.cpp')
-rw-r--r-- | louloulibs/utils/sha1.cpp | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/louloulibs/utils/sha1.cpp b/louloulibs/utils/sha1.cpp deleted file mode 100644 index f75bc2a..0000000 --- a/louloulibs/utils/sha1.cpp +++ /dev/null @@ -1,121 +0,0 @@ -/* This code is public-domain - it is based on libcrypt - * placed in the public domain by Wei Dai and other contributors. - */ - -#include "sha1.hpp" - -#define SHA1_K0 0x5a827999 -#define SHA1_K20 0x6ed9eba1 -#define SHA1_K40 0x8f1bbcdc -#define SHA1_K60 0xca62c1d6 - -const uint8_t sha1InitState[] = { - 0x01,0x23,0x45,0x67, // H0 - 0x89,0xab,0xcd,0xef, // H1 - 0xfe,0xdc,0xba,0x98, // H2 - 0x76,0x54,0x32,0x10, // H3 - 0xf0,0xe1,0xd2,0xc3 // H4 -}; - -void sha1_init(sha1nfo *s) { - memcpy(s->state.b,sha1InitState,HASH_LENGTH); - s->byteCount = 0; - s->bufferOffset = 0; -} - -uint32_t sha1_rol32(uint32_t number, uint8_t bits) { - return ((number << bits) | (number >> (32-bits))); -} - -void sha1_hashBlock(sha1nfo *s) { - uint8_t i; - uint32_t a,b,c,d,e,t; - - a=s->state.w[0]; - b=s->state.w[1]; - c=s->state.w[2]; - d=s->state.w[3]; - e=s->state.w[4]; - for (i=0; i<80; i++) { - if (i>=16) { - t = s->buffer.w[(i+13)&15] ^ s->buffer.w[(i+8)&15] ^ s->buffer.w[(i+2)&15] ^ s->buffer.w[i&15]; - s->buffer.w[i&15] = sha1_rol32(t,1); - } - if (i<20) { - t = (d ^ (b & (c ^ d))) + SHA1_K0; - } else if (i<40) { - t = (b ^ c ^ d) + SHA1_K20; - } else if (i<60) { - t = ((b & c) | (d & (b | c))) + SHA1_K40; - } else { - t = (b ^ c ^ d) + SHA1_K60; - } - t+=sha1_rol32(a,5) + e + s->buffer.w[i&15]; - e=d; - d=c; - c=sha1_rol32(b,30); - b=a; - a=t; - } - s->state.w[0] += a; - s->state.w[1] += b; - s->state.w[2] += c; - s->state.w[3] += d; - s->state.w[4] += e; -} - -void sha1_addUncounted(sha1nfo *s, uint8_t data) { - s->buffer.b[s->bufferOffset ^ 3] = data; - s->bufferOffset++; - if (s->bufferOffset == BLOCK_LENGTH) { - sha1_hashBlock(s); - s->bufferOffset = 0; - } -} - -void sha1_writebyte(sha1nfo *s, uint8_t data) { - ++s->byteCount; - sha1_addUncounted(s, data); -} - -void sha1_write(sha1nfo *s, const char *data, size_t len) { - for (;len--;) sha1_writebyte(s, (uint8_t) *data++); -} - -void sha1_pad(sha1nfo *s) { - // Implement SHA-1 padding (fips180-2 §5.1.1) - - // Pad with 0x80 followed by 0x00 until the end of the block - sha1_addUncounted(s, 0x80); - while (s->bufferOffset != 56) sha1_addUncounted(s, 0x00); - - // Append length in the last 8 bytes - sha1_addUncounted(s, 0); // We're only using 32 bit lengths - sha1_addUncounted(s, 0); // But SHA-1 supports 64 bit lengths - sha1_addUncounted(s, 0); // So zero pad the top bits - sha1_addUncounted(s, s->byteCount >> 29); // Shifting to multiply by 8 - sha1_addUncounted(s, s->byteCount >> 21); // as SHA-1 supports bitstreams as well as - sha1_addUncounted(s, s->byteCount >> 13); // byte. - sha1_addUncounted(s, s->byteCount >> 5); - sha1_addUncounted(s, s->byteCount << 3); -} - -uint8_t* sha1_result(sha1nfo *s) { - int i; - // Pad to complete the last block - sha1_pad(s); - - // Swap byte order back - for (i=0; i<5; i++) { - uint32_t a,b; - a=s->state.w[i]; - b=a<<24; - b|=(a<<8) & 0x00ff0000; - b|=(a>>8) & 0x0000ff00; - b|=a>>24; - s->state.w[i]=b; - } - - // Return pointer to hash (20 characters) - return s->state.b; -} |