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switching from unreliable typedefs to precisely sized uint32_t and uint64_t

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This commit is contained in:
SlowRiot 2014-11-20 02:03:08 +00:00
parent 76cc2bf7b4
commit 4aae465867
2 changed files with 16 additions and 19 deletions
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24
libs/sha1/sha1.cpp
View file

@ -54,7 +54,7 @@ void SHA1::update(std::istream &is)
while (is)
{
uint32 block[BLOCK_INTS];
uint32_t block[BLOCK_INTS];
buffer_to_block(buffer, block);
transform(block);
read(is, buffer, BLOCK_BYTES);
@ -69,7 +69,7 @@ void SHA1::update(std::istream &is)
std::string SHA1::final()
{
/* Total number of hashed bits */
uint64 total_bits = (transforms*BLOCK_BYTES + buffer.size()) * 8;
uint64_t total_bits = (transforms*BLOCK_BYTES + buffer.size()) * 8;
/* Padding */
buffer += 0x80;
@ -79,7 +79,7 @@ std::string SHA1::final()
buffer += (char)0x00;
}
uint32 block[BLOCK_INTS];
uint32_t block[BLOCK_INTS];
buffer_to_block(buffer, block);
if (orig_size > BLOCK_BYTES - 8)
@ -91,7 +91,7 @@ std::string SHA1::final()
}
}
/* Append total_bits, split this uint64 into two uint32 */
/* Append total_bits, split this uint64_t into two uint32_t */
block[BLOCK_INTS - 1] = total_bits;
block[BLOCK_INTS - 2] = (total_bits >> 32);
transform(block);
@ -139,14 +139,14 @@ void SHA1::reset()
* Hash a single 512-bit block. This is the core of the algorithm.
*/
void SHA1::transform(uint32 block[BLOCK_BYTES])
void SHA1::transform(uint32_t block[BLOCK_BYTES])
{
/* Copy digest[] to working vars */
uint32 a = digest[0];
uint32 b = digest[1];
uint32 c = digest[2];
uint32 d = digest[3];
uint32 e = digest[4];
uint32_t a = digest[0];
uint32_t b = digest[1];
uint32_t c = digest[2];
uint32_t d = digest[3];
uint32_t e = digest[4];
/* 4 rounds of 20 operations each. Loop unrolled. */
@ -243,9 +243,9 @@ void SHA1::transform(uint32 block[BLOCK_BYTES])
}
void SHA1::buffer_to_block(const std::string &buffer, uint32 block[BLOCK_INTS])
void SHA1::buffer_to_block(const std::string &buffer, uint32_t block[BLOCK_INTS])
{
/* Convert the std::string (byte buffer) to a uint32 array (MSB) */
/* Convert the std::string (byte buffer) to a uint32_t array (MSB) */
for (unsigned int i = 0; i < BLOCK_INTS; i++)
{
block[i] = (buffer[4*i+3] & 0xff)

11
libs/sha1/sha1.h
View file

@ -34,22 +34,19 @@ public:
static std::string from_file(const std::string &filename);
private:
typedef unsigned long int uint32; /* just needs to be at least 32bit */
typedef unsigned long long uint64; /* just needs to be at least 64bit */
static const unsigned int DIGEST_INTS = 5; /* number of 32bit integers per SHA1 digest */
static const unsigned int BLOCK_INTS = 16; /* number of 32bit integers per SHA1 block */
static const unsigned int BLOCK_BYTES = BLOCK_INTS * 4;
uint32 digest[DIGEST_INTS];
uint32_t digest[DIGEST_INTS];
std::string buffer;
uint64 transforms;
uint64_t transforms;
void reset();
void transform(uint32 block[BLOCK_BYTES]);
void transform(uint32_t block[BLOCK_BYTES]);
static void read(std::istream &is, std::string &s, size_t max);
static void buffer_to_block(const std::string &buffer, uint32 block[BLOCK_INTS]);
static void buffer_to_block(const std::string &buffer, uint32_t block[BLOCK_INTS]);
};
std::string sha1(const std::string &string);