+++ /dev/null
-/*
- * Cryptographic API. {{{
- *
- * SHA-256, as specified in
- * http://csrc.nist.gov/cryptval/shs/sha256-384-512.pdf
- *
- * SHA-256 code by Jean-Luc Cooke <jlcooke@certainkey.com>.
- *
- * Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com>
- * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
- * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
- *
- * Ported from the Linux kernel to Apt by Anthony Towns <ajt@debian.org>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- */ /*}}}*/
-
-#ifdef __GNUG__
-#pragma implementation "apt-pkg/sha256.h"
-#endif
-
-
-#define SHA256_DIGEST_SIZE 32
-#define SHA256_HMAC_BLOCK_SIZE 64
-
-#define ror32(value,bits) (((value) >> (bits)) | ((value) << (32 - (bits))))
-
-#include <apt-pkg/sha256.h>
-#include <apt-pkg/strutl.h>
-#include <string.h>
-#include <unistd.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <arpa/inet.h>
-
-typedef uint32_t u32;
-typedef uint8_t u8;
-
-static inline u32 Ch(u32 x, u32 y, u32 z)
-{
- return z ^ (x & (y ^ z));
-}
-
-static inline u32 Maj(u32 x, u32 y, u32 z)
-{
- return (x & y) | (z & (x | y));
-}
-
-#define e0(x) (ror32(x, 2) ^ ror32(x,13) ^ ror32(x,22))
-#define e1(x) (ror32(x, 6) ^ ror32(x,11) ^ ror32(x,25))
-#define s0(x) (ror32(x, 7) ^ ror32(x,18) ^ (x >> 3))
-#define s1(x) (ror32(x,17) ^ ror32(x,19) ^ (x >> 10))
-
-#define H0 0x6a09e667
-#define H1 0xbb67ae85
-#define H2 0x3c6ef372
-#define H3 0xa54ff53a
-#define H4 0x510e527f
-#define H5 0x9b05688c
-#define H6 0x1f83d9ab
-#define H7 0x5be0cd19
-
-static inline void LOAD_OP(int I, u32 *W, const u8 *input) /*{{{*/
-{
- W[I] = ( ((u32) input[I * 4 + 0] << 24)
- | ((u32) input[I * 4 + 1] << 16)
- | ((u32) input[I * 4 + 2] << 8)
- | ((u32) input[I * 4 + 3]));
-}
- /*}}}*/
-static inline void BLEND_OP(int I, u32 *W)
-{
- W[I] = s1(W[I-2]) + W[I-7] + s0(W[I-15]) + W[I-16];
-}
-
-static void sha256_transform(u32 *state, const u8 *input) /*{{{*/
-{
- u32 a, b, c, d, e, f, g, h, t1, t2;
- u32 W[64];
- int i;
-
- /* load the input */
- for (i = 0; i < 16; i++)
- LOAD_OP(i, W, input);
-
- /* now blend */
- for (i = 16; i < 64; i++)
- BLEND_OP(i, W);
-
- /* load the state into our registers */
- a=state[0]; b=state[1]; c=state[2]; d=state[3];
- e=state[4]; f=state[5]; g=state[6]; h=state[7];
-
- /* now iterate */
- t1 = h + e1(e) + Ch(e,f,g) + 0x428a2f98 + W[ 0];
- t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
- t1 = g + e1(d) + Ch(d,e,f) + 0x71374491 + W[ 1];
- t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
- t1 = f + e1(c) + Ch(c,d,e) + 0xb5c0fbcf + W[ 2];
- t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
- t1 = e + e1(b) + Ch(b,c,d) + 0xe9b5dba5 + W[ 3];
- t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
- t1 = d + e1(a) + Ch(a,b,c) + 0x3956c25b + W[ 4];
- t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
- t1 = c + e1(h) + Ch(h,a,b) + 0x59f111f1 + W[ 5];
- t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
- t1 = b + e1(g) + Ch(g,h,a) + 0x923f82a4 + W[ 6];
- t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
- t1 = a + e1(f) + Ch(f,g,h) + 0xab1c5ed5 + W[ 7];
- t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
-
- t1 = h + e1(e) + Ch(e,f,g) + 0xd807aa98 + W[ 8];
- t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
- t1 = g + e1(d) + Ch(d,e,f) + 0x12835b01 + W[ 9];
- t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
- t1 = f + e1(c) + Ch(c,d,e) + 0x243185be + W[10];
- t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
- t1 = e + e1(b) + Ch(b,c,d) + 0x550c7dc3 + W[11];
- t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
- t1 = d + e1(a) + Ch(a,b,c) + 0x72be5d74 + W[12];
- t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
- t1 = c + e1(h) + Ch(h,a,b) + 0x80deb1fe + W[13];
- t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
- t1 = b + e1(g) + Ch(g,h,a) + 0x9bdc06a7 + W[14];
- t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
- t1 = a + e1(f) + Ch(f,g,h) + 0xc19bf174 + W[15];
- t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
-
- t1 = h + e1(e) + Ch(e,f,g) + 0xe49b69c1 + W[16];
- t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
- t1 = g + e1(d) + Ch(d,e,f) + 0xefbe4786 + W[17];
- t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
- t1 = f + e1(c) + Ch(c,d,e) + 0x0fc19dc6 + W[18];
- t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
- t1 = e + e1(b) + Ch(b,c,d) + 0x240ca1cc + W[19];
- t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
- t1 = d + e1(a) + Ch(a,b,c) + 0x2de92c6f + W[20];
- t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
- t1 = c + e1(h) + Ch(h,a,b) + 0x4a7484aa + W[21];
- t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
- t1 = b + e1(g) + Ch(g,h,a) + 0x5cb0a9dc + W[22];
- t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
- t1 = a + e1(f) + Ch(f,g,h) + 0x76f988da + W[23];
- t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
-
- t1 = h + e1(e) + Ch(e,f,g) + 0x983e5152 + W[24];
- t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
- t1 = g + e1(d) + Ch(d,e,f) + 0xa831c66d + W[25];
- t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
- t1 = f + e1(c) + Ch(c,d,e) + 0xb00327c8 + W[26];
- t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
- t1 = e + e1(b) + Ch(b,c,d) + 0xbf597fc7 + W[27];
- t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
- t1 = d + e1(a) + Ch(a,b,c) + 0xc6e00bf3 + W[28];
- t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
- t1 = c + e1(h) + Ch(h,a,b) + 0xd5a79147 + W[29];
- t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
- t1 = b + e1(g) + Ch(g,h,a) + 0x06ca6351 + W[30];
- t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
- t1 = a + e1(f) + Ch(f,g,h) + 0x14292967 + W[31];
- t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
-
- t1 = h + e1(e) + Ch(e,f,g) + 0x27b70a85 + W[32];
- t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
- t1 = g + e1(d) + Ch(d,e,f) + 0x2e1b2138 + W[33];
- t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
- t1 = f + e1(c) + Ch(c,d,e) + 0x4d2c6dfc + W[34];
- t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
- t1 = e + e1(b) + Ch(b,c,d) + 0x53380d13 + W[35];
- t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
- t1 = d + e1(a) + Ch(a,b,c) + 0x650a7354 + W[36];
- t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
- t1 = c + e1(h) + Ch(h,a,b) + 0x766a0abb + W[37];
- t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
- t1 = b + e1(g) + Ch(g,h,a) + 0x81c2c92e + W[38];
- t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
- t1 = a + e1(f) + Ch(f,g,h) + 0x92722c85 + W[39];
- t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
-
- t1 = h + e1(e) + Ch(e,f,g) + 0xa2bfe8a1 + W[40];
- t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
- t1 = g + e1(d) + Ch(d,e,f) + 0xa81a664b + W[41];
- t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
- t1 = f + e1(c) + Ch(c,d,e) + 0xc24b8b70 + W[42];
- t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
- t1 = e + e1(b) + Ch(b,c,d) + 0xc76c51a3 + W[43];
- t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
- t1 = d + e1(a) + Ch(a,b,c) + 0xd192e819 + W[44];
- t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
- t1 = c + e1(h) + Ch(h,a,b) + 0xd6990624 + W[45];
- t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
- t1 = b + e1(g) + Ch(g,h,a) + 0xf40e3585 + W[46];
- t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
- t1 = a + e1(f) + Ch(f,g,h) + 0x106aa070 + W[47];
- t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
-
- t1 = h + e1(e) + Ch(e,f,g) + 0x19a4c116 + W[48];
- t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
- t1 = g + e1(d) + Ch(d,e,f) + 0x1e376c08 + W[49];
- t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
- t1 = f + e1(c) + Ch(c,d,e) + 0x2748774c + W[50];
- t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
- t1 = e + e1(b) + Ch(b,c,d) + 0x34b0bcb5 + W[51];
- t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
- t1 = d + e1(a) + Ch(a,b,c) + 0x391c0cb3 + W[52];
- t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
- t1 = c + e1(h) + Ch(h,a,b) + 0x4ed8aa4a + W[53];
- t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
- t1 = b + e1(g) + Ch(g,h,a) + 0x5b9cca4f + W[54];
- t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
- t1 = a + e1(f) + Ch(f,g,h) + 0x682e6ff3 + W[55];
- t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
-
- t1 = h + e1(e) + Ch(e,f,g) + 0x748f82ee + W[56];
- t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
- t1 = g + e1(d) + Ch(d,e,f) + 0x78a5636f + W[57];
- t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
- t1 = f + e1(c) + Ch(c,d,e) + 0x84c87814 + W[58];
- t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
- t1 = e + e1(b) + Ch(b,c,d) + 0x8cc70208 + W[59];
- t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
- t1 = d + e1(a) + Ch(a,b,c) + 0x90befffa + W[60];
- t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
- t1 = c + e1(h) + Ch(h,a,b) + 0xa4506ceb + W[61];
- t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
- t1 = b + e1(g) + Ch(g,h,a) + 0xbef9a3f7 + W[62];
- t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
- t1 = a + e1(f) + Ch(f,g,h) + 0xc67178f2 + W[63];
- t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
-
- state[0] += a; state[1] += b; state[2] += c; state[3] += d;
- state[4] += e; state[5] += f; state[6] += g; state[7] += h;
-
- /* clear any sensitive info... */
- a = b = c = d = e = f = g = h = t1 = t2 = 0;
- memset(W, 0, 64 * sizeof(u32));
-}
- /*}}}*/
-SHA256Summation::SHA256Summation() /*{{{*/
-{
- Sum.state[0] = H0;
- Sum.state[1] = H1;
- Sum.state[2] = H2;
- Sum.state[3] = H3;
- Sum.state[4] = H4;
- Sum.state[5] = H5;
- Sum.state[6] = H6;
- Sum.state[7] = H7;
- Sum.count[0] = Sum.count[1] = 0;
- memset(Sum.buf, 0, sizeof(Sum.buf));
- Done = false;
-}
- /*}}}*/
-bool SHA256Summation::Add(const u8 *data, unsigned long len) /*{{{*/
-{
- struct sha256_ctx *sctx = ∑
- unsigned int i, index, part_len;
-
- if (Done) return false;
-
- /* Compute number of bytes mod 128 */
- index = (unsigned int)((sctx->count[0] >> 3) & 0x3f);
-
- /* Update number of bits */
- if ((sctx->count[0] += (len << 3)) < (len << 3)) {
- sctx->count[1]++;
- sctx->count[1] += (len >> 29);
- }
-
- part_len = 64 - index;
-
- /* Transform as many times as possible. */
- if (len >= part_len) {
- memcpy(&sctx->buf[index], data, part_len);
- sha256_transform(sctx->state, sctx->buf);
-
- for (i = part_len; i + 63 < len; i += 64)
- sha256_transform(sctx->state, &data[i]);
- index = 0;
- } else {
- i = 0;
- }
-
- /* Buffer remaining input */
- memcpy(&sctx->buf[index], &data[i], len-i);
-
- return true;
-}
- /*}}}*/
-SHA256SumValue SHA256Summation::Result() /*{{{*/
-{
- struct sha256_ctx *sctx = ∑
- if (!Done) {
- u8 bits[8];
- unsigned int index, pad_len, t;
- static const u8 padding[64] = { 0x80, };
-
- /* Save number of bits */
- t = sctx->count[0];
- bits[7] = t; t >>= 8;
- bits[6] = t; t >>= 8;
- bits[5] = t; t >>= 8;
- bits[4] = t;
- t = sctx->count[1];
- bits[3] = t; t >>= 8;
- bits[2] = t; t >>= 8;
- bits[1] = t; t >>= 8;
- bits[0] = t;
-
- /* Pad out to 56 mod 64. */
- index = (sctx->count[0] >> 3) & 0x3f;
- pad_len = (index < 56) ? (56 - index) : ((64+56) - index);
- Add(padding, pad_len);
-
- /* Append length (before padding) */
- Add(bits, 8);
- }
-
- Done = true;
-
- /* Store state in digest */
-
- SHA256SumValue res;
- u8 *out = res.Sum;
-
- int i, j;
- unsigned int t;
- for (i = j = 0; i < 8; i++, j += 4) {
- t = sctx->state[i];
- out[j+3] = t; t >>= 8;
- out[j+2] = t; t >>= 8;
- out[j+1] = t; t >>= 8;
- out[j ] = t;
- }
-
- return res;
-}
- /*}}}*/
-// SHA256SumValue::SHA256SumValue - Constructs the sum from a string /*{{{*/
-// ---------------------------------------------------------------------
-/* The string form of a SHA256 is a 64 character hex number */
-SHA256SumValue::SHA256SumValue(string Str)
-{
- memset(Sum,0,sizeof(Sum));
- Set(Str);
-}
- /*}}}*/
-// SHA256SumValue::SHA256SumValue - Default constructor /*{{{*/
-// ---------------------------------------------------------------------
-/* Sets the value to 0 */
-SHA256SumValue::SHA256SumValue()
-{
- memset(Sum,0,sizeof(Sum));
-}
- /*}}}*/
-// SHA256SumValue::Set - Set the sum from a string /*{{{*/
-// ---------------------------------------------------------------------
-/* Converts the hex string into a set of chars */
-bool SHA256SumValue::Set(string Str)
-{
- return Hex2Num(Str,Sum,sizeof(Sum));
-}
- /*}}}*/
-// SHA256SumValue::Value - Convert the number into a string /*{{{*/
-// ---------------------------------------------------------------------
-/* Converts the set of chars into a hex string in lower case */
-string SHA256SumValue::Value() const
-{
- char Conv[16] =
- { '0','1','2','3','4','5','6','7','8','9','a','b',
- 'c','d','e','f'
- };
- char Result[65];
- Result[64] = 0;
-
- // Convert each char into two letters
- int J = 0;
- int I = 0;
- for (; I != 64; J++,I += 2)
- {
- Result[I] = Conv[Sum[J] >> 4];
- Result[I + 1] = Conv[Sum[J] & 0xF];
- }
-
- return string(Result);
-}
- /*}}}*/
-// SHA256SumValue::operator == - Comparator /*{{{*/
-// ---------------------------------------------------------------------
-/* Call memcmp on the buffer */
-bool SHA256SumValue::operator == (const SHA256SumValue & rhs) const
-{
- return memcmp(Sum,rhs.Sum,sizeof(Sum)) == 0;
-}
- /*}}}*/
-// SHA256Summation::AddFD - Add content of file into the checksum /*{{{*/
-// ---------------------------------------------------------------------
-/* */
-bool SHA256Summation::AddFD(int Fd,unsigned long Size)
-{
- unsigned char Buf[64 * 64];
- int Res = 0;
- int ToEOF = (Size == 0);
- while (Size != 0 || ToEOF)
- {
- unsigned n = sizeof(Buf);
- if (!ToEOF) n = min(Size,(unsigned long)n);
- Res = read(Fd,Buf,n);
- if (Res < 0 || (!ToEOF && (unsigned) Res != n)) // error, or short read
- return false;
- if (ToEOF && Res == 0) // EOF
- break;
- Size -= Res;
- Add(Buf,Res);
- }
- return true;
-}
- /*}}}*/
-
projects / apt.git / blobdiff