Swiftdiff options
Diffstat (limited to 'Swiften/StringCodecs/SHA1.cpp')
| -rw-r--r-- | Swiften/StringCodecs/SHA1.cpp | 69 |
1 files changed, 40 insertions, 29 deletions
diff --git a/Swiften/StringCodecs/SHA1.cpp b/Swiften/StringCodecs/SHA1.cpp index 9882f70..a78a7b0 100644 --- a/Swiften/StringCodecs/SHA1.cpp +++ b/Swiften/StringCodecs/SHA1.cpp @@ -4,10 +4,14 @@ * See Documentation/Licenses/GPLv3.txt for more information. */ +#include <Swiften/StringCodecs/SHA1.h> + #include "Swiften/Base/Platform.h" #pragma GCC diagnostic ignored "-Wold-style-cast" +using namespace Swift; + /* SHA-1 in C By Steve Reid <steve@edmweb.com> @@ -25,21 +29,9 @@ A million repetitions of "a" /* #define LITTLE_ENDIAN * This should be #define'd if true. */ /* #define SHA1HANDSOFF * Copies data before messing with it. */ -#include <boost/cstdint.hpp> #include <stdio.h> #include <string.h> -typedef struct { - boost::uint32_t state[5]; - boost::uint32_t count[2]; - boost::uint8_t buffer[64]; -} SHA1_CTX; - -void SHA1Transform(boost::uint32_t state[5], boost::uint8_t buffer[64]); -void SHA1Init(SHA1_CTX* context); -void SHA1Update(SHA1_CTX* context, boost::uint8_t* data, unsigned int len); -void SHA1Final(boost::uint8_t digest[20], SHA1_CTX* context); - #define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits)))) /* blk0() and blk() perform the initial expand. */ @@ -63,7 +55,7 @@ void SHA1Final(boost::uint8_t digest[20], SHA1_CTX* context); /* Hash a single 512-bit block. This is the core of the algorithm. */ -void SHA1Transform(boost::uint32_t state[5], boost::uint8_t buffer[64]) +void SHA1::Transform(boost::uint32_t state[5], boost::uint8_t buffer[64]) { boost::uint32_t a, b, c, d, e; typedef union { @@ -118,7 +110,7 @@ static boost::uint8_t workspace[64]; /* SHA1Init - Initialize new context */ -void SHA1Init(SHA1_CTX* context) +void SHA1::Init(SHA1::CTX* context) { /* SHA1 initialization constants */ context->state[0] = 0x67452301; @@ -132,7 +124,7 @@ void SHA1Init(SHA1_CTX* context) /* Run your data through this. */ -void SHA1Update(SHA1_CTX* context, boost::uint8_t* data, unsigned int len) +void SHA1::Update(SHA1::CTX* context, boost::uint8_t* data, unsigned int len) { unsigned int i, j; @@ -141,9 +133,9 @@ unsigned int i, j; context->count[1] += (len >> 29); if ((j + len) > 63) { memcpy(&context->buffer[j], data, (i = 64-j)); - SHA1Transform(context->state, context->buffer); + Transform(context->state, context->buffer); for ( ; i + 63 < len; i += 64) { - SHA1Transform(context->state, &data[i]); + Transform(context->state, &data[i]); } j = 0; } @@ -154,7 +146,7 @@ unsigned int i, j; /* Add padding and return the message digest. */ -void SHA1Final(boost::uint8_t digest[20], SHA1_CTX* context) +void SHA1::Final(boost::uint8_t digest[20], SHA1::CTX* context) { boost::uint32_t i, j; boost::uint8_t finalcount[8]; @@ -163,11 +155,11 @@ boost::uint8_t finalcount[8]; finalcount[i] = (boost::uint8_t) ((context->count[(i >= 4 ? 0 : 1)] >> ((3-(i & 3)) * 8) ) & 255); /* Endian independent */ } - SHA1Update(context, (boost::uint8_t *)("\200"), 1); + Update(context, (boost::uint8_t *)("\200"), 1); while ((context->count[0] & 504) != 448) { - SHA1Update(context, (boost::uint8_t *)("\0"), 1); + Update(context, (boost::uint8_t *)("\0"), 1); } - SHA1Update(context, finalcount, 8); /* Should cause a SHA1Transform() */ + Update(context, finalcount, 8); /* Should cause a SHA1Transform() */ for (i = 0; i < 20; i++) { digest[i] = (boost::uint8_t) ((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255); @@ -179,24 +171,43 @@ boost::uint8_t finalcount[8]; memset(context->count, 0, 8); memset(&finalcount, 0, 8); #ifdef SHA1HANDSOFF /* make SHA1Transform overwrite it's own static vars */ - SHA1Transform(context->state, context->buffer); + Transform(context->state, context->buffer); #endif } // ----------------------------------------------------------------------------- -#include "Swiften/StringCodecs/SHA1.h" - namespace Swift { +SHA1::SHA1() { + Init(&context); +} + +SHA1& SHA1::update(const std::vector<unsigned char>& input) { + std::vector<unsigned char> inputCopy(input); + Update(&context, (boost::uint8_t*) &inputCopy[0], inputCopy.size()); + return *this; +} + +std::vector<unsigned char> SHA1::getHash() const { + std::vector<unsigned char> digest; + digest.resize(20); + CTX contextCopy(context); + Final((boost::uint8_t*) &digest[0], &contextCopy); + return digest; +} + ByteArray SHA1::getHash(const ByteArray& input) { - ByteArray inputCopy(input); + CTX context; + Init(&context); + + std::vector<unsigned char> inputCopy(input.getVector()); + Update(&context, (boost::uint8_t*) &inputCopy[0], inputCopy.size()); + ByteArray digest; digest.resize(20); - SHA1_CTX context; - SHA1Init(&context); - SHA1Update(&context, (boost::uint8_t*) inputCopy.getData(), inputCopy.getSize()); - SHA1Final((boost::uint8_t*) digest.getData(), &context); + Final((boost::uint8_t*) digest.getData(), &context); + return digest; } |