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Merge pull request #540 from reicast/skmp/gdtool 

hash support on gdtool
This commit is contained in:
Stefanos Kornilios Mitsis Poiitidis 2014-10-05 23:28:55 +03:00
parent 97c487b06d 0825ca5a4b
commit 286d6372b5
6 changed files with 250 additions and 3 deletions
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161
core/deps/crypto/sha256.cpp Normal file
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@ -0,0 +1,161 @@
/*********************************************************************
* Filename: sha256.c
* Author: Brad Conte (brad AT bradconte.com)
* Copyright:
* Disclaimer: This code is presented "as is" without any guarantees.
* Details: Implementation of the SHA-256 hashing algorithm.
SHA-256 is one of the three algorithms in the SHA2
specification. The others, SHA-384 and SHA-512, are not
offered in this implementation.
Algorithm specification can be found here:
* http://csrc.nist.gov/publications/fips/fips180-2/fips180-2withchangenotice.pdf
This implementation uses little endian byte order.
*********************************************************************/
/*************************** HEADER FILES ***************************/
#include <stdlib.h>
#include <memory.h>
#include "sha256.h"
#define WORD uint32_t
#define BYTE uint8_t
/****************************** MACROS ******************************/
#define ROTLEFT(a,b) (((a) << (b)) | ((a) >> (32-(b))))
#define ROTRIGHT(a,b) (((a) >> (b)) | ((a) << (32-(b))))
#define CH(x,y,z) (((x) & (y)) ^ (~(x) & (z)))
#define MAJ(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
#define EP0(x) (ROTRIGHT(x,2) ^ ROTRIGHT(x,13) ^ ROTRIGHT(x,22))
#define EP1(x) (ROTRIGHT(x,6) ^ ROTRIGHT(x,11) ^ ROTRIGHT(x,25))
#define SIG0(x) (ROTRIGHT(x,7) ^ ROTRIGHT(x,18) ^ ((x) >> 3))
#define SIG1(x) (ROTRIGHT(x,17) ^ ROTRIGHT(x,19) ^ ((x) >> 10))
/**************************** VARIABLES *****************************/
static const WORD k[64] = {
0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5,0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5,
0xd807aa98,0x12835b01,0x243185be,0x550c7dc3,0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174,
0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc,0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da,
0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7,0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967,
0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13,0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85,
0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3,0xd192e819,0xd6990624,0xf40e3585,0x106aa070,
0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5,0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3,
0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208,0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
};
/*********************** FUNCTION DEFINITIONS ***********************/
void sha256_transform(SHA256_CTX *ctx, const BYTE data[])
{
WORD a, b, c, d, e, f, g, h, i, j, t1, t2, m[64];
for (i = 0, j = 0; i < 16; ++i, j += 4)
m[i] = (data[j] << 24) | (data[j + 1] << 16) | (data[j + 2] << 8) | (data[j + 3]);
for ( ; i < 64; ++i)
m[i] = SIG1(m[i - 2]) + m[i - 7] + SIG0(m[i - 15]) + m[i - 16];
a = ctx->state[0];
b = ctx->state[1];
c = ctx->state[2];
d = ctx->state[3];
e = ctx->state[4];
f = ctx->state[5];
g = ctx->state[6];
h = ctx->state[7];
for (i = 0; i < 64; ++i) {
t1 = h + EP1(e) + CH(e,f,g) + k[i] + m[i];
t2 = EP0(a) + MAJ(a,b,c);
h = g;
g = f;
f = e;
e = d + t1;
d = c;
c = b;
b = a;
a = t1 + t2;
}
ctx->state[0] += a;
ctx->state[1] += b;
ctx->state[2] += c;
ctx->state[3] += d;
ctx->state[4] += e;
ctx->state[5] += f;
ctx->state[6] += g;
ctx->state[7] += h;
}
void sha256_init(SHA256_CTX *ctx)
{
ctx->datalen = 0;
ctx->bitlen = 0;
ctx->state[0] = 0x6a09e667;
ctx->state[1] = 0xbb67ae85;
ctx->state[2] = 0x3c6ef372;
ctx->state[3] = 0xa54ff53a;
ctx->state[4] = 0x510e527f;
ctx->state[5] = 0x9b05688c;
ctx->state[6] = 0x1f83d9ab;
ctx->state[7] = 0x5be0cd19;
}
void sha256_update(SHA256_CTX *ctx, const BYTE data[], size_t len)
{
WORD i;
for (i = 0; i < len; ++i) {
ctx->data[ctx->datalen] = data[i];
ctx->datalen++;
if (ctx->datalen == 64) {
sha256_transform(ctx, ctx->data);
ctx->bitlen += 512;
ctx->datalen = 0;
}
}
}
void sha256_final(SHA256_CTX *ctx, BYTE hash[])
{
WORD i;
i = ctx->datalen;
// Pad whatever data is left in the buffer.
if (ctx->datalen < 56) {
ctx->data[i++] = 0x80;
while (i < 56)
ctx->data[i++] = 0x00;
}
else {
ctx->data[i++] = 0x80;
while (i < 64)
ctx->data[i++] = 0x00;
sha256_transform(ctx, ctx->data);
memset(ctx->data, 0, 56);
}
// Append to the padding the total message's length in bits and transform.
ctx->bitlen += ctx->datalen * 8;
ctx->data[63] = (BYTE)(ctx->bitlen);
ctx->data[62] = (BYTE)(ctx->bitlen >> 8);
ctx->data[61] = (BYTE)(ctx->bitlen >> 16);
ctx->data[60] = (BYTE)(ctx->bitlen >> 24);
ctx->data[59] = (BYTE)(ctx->bitlen >> 32);
ctx->data[58] = (BYTE)(ctx->bitlen >> 40);
ctx->data[57] = (BYTE)(ctx->bitlen >> 48);
ctx->data[56] = (BYTE)(ctx->bitlen >> 56);
sha256_transform(ctx, ctx->data);
// Since this implementation uses little endian byte ordering and SHA uses big endian,
// reverse all the bytes when copying the final state to the output hash.
for (i = 0; i < 4; ++i) {
hash[i] = (ctx->state[0] >> (24 - i * 8)) & 0x000000ff;
hash[i + 4] = (ctx->state[1] >> (24 - i * 8)) & 0x000000ff;
hash[i + 8] = (ctx->state[2] >> (24 - i * 8)) & 0x000000ff;
hash[i + 12] = (ctx->state[3] >> (24 - i * 8)) & 0x000000ff;
hash[i + 16] = (ctx->state[4] >> (24 - i * 8)) & 0x000000ff;
hash[i + 20] = (ctx->state[5] >> (24 - i * 8)) & 0x000000ff;
hash[i + 24] = (ctx->state[6] >> (24 - i * 8)) & 0x000000ff;
hash[i + 28] = (ctx->state[7] >> (24 - i * 8)) & 0x000000ff;
}
}

37
core/deps/crypto/sha256.h Normal file
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@ -0,0 +1,37 @@
/*********************************************************************
* Filename: sha256.h
* Author: Brad Conte (brad AT bradconte.com)
* Copyright:
* Disclaimer: This code is presented "as is" without any guarantees.
* Details: Defines the API for the corresponding SHA1 implementation.
*********************************************************************/
#ifndef SHA256_H
#define SHA256_H
/*************************** HEADER FILES ***************************/
#include <stddef.h>
#include <stdint.h>
/****************************** MACROS ******************************/
#define SHA256_BLOCK_SIZE 32 // SHA256 outputs a 32 byte digest
/**************************** DATA TYPES ****************************/
/*
typedef uint8_t BYTE; // 8-bit byte
typedef uint32_t WORD; // 32-bit word, change to "long" for 16-bit machines
*/
typedef struct {
uint8_t data[64];
uint32_t datalen;
uint64_t bitlen;
uint32_t state[8];
} SHA256_CTX;
/*********************** FUNCTION DECLARATIONS **********************/
void sha256_init(SHA256_CTX *ctx);
void sha256_update(SHA256_CTX *ctx, const uint8_t data[], size_t len);
void sha256_final(SHA256_CTX *ctx, uint8_t hash[]);
#endif // SHA256_H

2
gdtool/gdtool.vcxproj
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@ -69,6 +69,7 @@
<ClCompile Include="..\core\deps\coreio\coreio.cpp" />
<ClCompile Include="..\core\deps\crypto\md5.cpp" />
<ClCompile Include="..\core\deps\crypto\sha1.cpp" />
<ClCompile Include="..\core\deps\crypto\sha256.cpp" />
<ClCompile Include="..\core\deps\libpng\png.c" />
<ClCompile Include="..\core\deps\libpng\pngerror.c" />
<ClCompile Include="..\core\deps\libpng\pngget.c" />
@ -114,6 +115,7 @@
<ClInclude Include="..\core\deps\coreio\coreio.h" />
<ClInclude Include="..\core\deps\crypto\md5.h" />
<ClInclude Include="..\core\deps\crypto\sha1.h" />
<ClInclude Include="..\core\deps\crypto\sha256.h" />
<ClInclude Include="..\core\deps\libpng\config.h" />
<ClInclude Include="..\core\deps\libpng\png.h" />
<ClInclude Include="..\core\deps\libpng\pngconf.h" />

6
gdtool/gdtool.vcxproj.filters
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@ -118,6 +118,9 @@
<ClCompile Include="..\core\deps\coreio\coreio.cpp">
<Filter>deps\coreio</Filter>
</ClCompile>
<ClCompile Include="..\core\deps\crypto\sha256.cpp">
<Filter>deps\crypto</Filter>
</ClCompile>
</ItemGroup>
<ItemGroup>
<ClInclude Include="..\core\imgread\SCSIDEFS.H">
@ -201,6 +204,9 @@
<ClInclude Include="..\core\deps\coreio\coreio.h">
<Filter>deps\coreio</Filter>
</ClInclude>
<ClInclude Include="..\core\deps\crypto\sha256.h">
<Filter>deps\crypto</Filter>
</ClInclude>
</ItemGroup>
<ItemGroup>
<Filter Include="imgread">

2
gdtool/gdtool.vcxproj.user
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@ -1,7 +1,7 @@
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
<LocalDebuggerCommandArguments>q:\ika.chd</LocalDebuggerCommandArguments>
<LocalDebuggerCommandArguments>-hash q:\ika.chd</LocalDebuggerCommandArguments>
<DebuggerFlavor>WindowsLocalDebugger</DebuggerFlavor>
</PropertyGroup>
</Project>

45
gdtool/src/main.cpp
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@ -7,6 +7,8 @@
#include "imgread/common.h"
#include "cdromfs.h"
#include "crypto/sha256.h"
int msgboxf(const wchar* text,unsigned int type,...) {
return MBX_OK;
}
@ -185,8 +187,46 @@ void extract_data(FILE* w, bool first, Disc* d, int start_fad, int size) {
}
}
void hash_track() {
void compute_disc_hash(FILE* w, bool first, Disc* d, const string& basename) {
SHA256_CTX ctx;
sha256_init(&ctx);
u8 temp[4096];
u32 fads = 0;
for (size_t i = 0; i < d->tracks.size(); i++) {
u32 fmt = d->tracks[i].CTRL==4?2048:2352;
u32 fad = d->tracks[i].StartFAD;
while (fad <= d->tracks[i].EndFAD) {
fads++;
d->ReadSectors(fad++,1,temp,fmt);
sha256_update(&ctx,temp,fmt);
if (0 == (fads % 32768 )) {
printf("hashed 64 megs ...\n");
}
}
}
BYTE hash[32];
sha256_final(&ctx, hash);
fprintf(w, first?"\n{":",\n{");
fprintf(w, "\n\t\"disc_hash\":\"sha256-");
for (int i=0; i<16; i++)
fprintf(w, "%02x", hash[i]);
fprintf(w, "\"");
if (has_info_basename) {
data_kvp(w, "basename", basename.c_str(), false);
}
fprintf(w, "\n}");
}
bool jsarray;
@ -214,7 +254,8 @@ void exec_cmd(FILE* w, bool first, Disc* d, const string& basename) {
break;
case 'h':
printf("hashes not supported yet");
//printf("hashes not supported yet");
compute_disc_hash(w, first, d, basename);
break;
case 'f':