mirror of
https://github.com/taigrr/arduinolibs
synced 2025-01-18 04:33:12 -08:00
2decb74161
SHA1 is on the cusp of being utterly broken so no new software should be making use of it for any reason.
257 lines
7.9 KiB
C++
257 lines
7.9 KiB
C++
/*
|
|
* Copyright (C) 2015 Southern Storm Software, Pty Ltd.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included
|
|
* in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
* DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#include "BLAKE2b.h"
|
|
#include "Crypto.h"
|
|
#include "utility/EndianUtil.h"
|
|
#include "utility/RotateUtil.h"
|
|
#include "utility/ProgMemUtil.h"
|
|
#include <string.h>
|
|
|
|
/**
|
|
* \class BLAKE2b BLAKE2b.h <BLAKE2b.h>
|
|
* \brief BLAKE2b hash algorithm.
|
|
*
|
|
* BLAKE2b is a variation on the ChaCha stream cipher, designed for hashing,
|
|
* with a 512-bit hash output. It is intended as a high performance
|
|
* replacement for SHA512 for when speed is critical but exact SHA512
|
|
* compatibility is not.
|
|
*
|
|
* Reference: https://blake2.net/
|
|
*
|
|
* \sa BLAKE2s, SHA512, SHA3_512
|
|
*/
|
|
|
|
/**
|
|
* \brief Constructs a BLAKE2b hash object.
|
|
*/
|
|
BLAKE2b::BLAKE2b()
|
|
{
|
|
reset();
|
|
}
|
|
|
|
/**
|
|
* \brief Destroys this BLAKE2b hash object after clearing
|
|
* sensitive information.
|
|
*/
|
|
BLAKE2b::~BLAKE2b()
|
|
{
|
|
clean(state);
|
|
}
|
|
|
|
size_t BLAKE2b::hashSize() const
|
|
{
|
|
return 64;
|
|
}
|
|
|
|
size_t BLAKE2b::blockSize() const
|
|
{
|
|
return 128;
|
|
}
|
|
|
|
// Initialization vectors for BLAKE2b.
|
|
#define BLAKE2b_IV0 0x6a09e667f3bcc908ULL
|
|
#define BLAKE2b_IV1 0xbb67ae8584caa73bULL
|
|
#define BLAKE2b_IV2 0x3c6ef372fe94f82bULL
|
|
#define BLAKE2b_IV3 0xa54ff53a5f1d36f1ULL
|
|
#define BLAKE2b_IV4 0x510e527fade682d1ULL
|
|
#define BLAKE2b_IV5 0x9b05688c2b3e6c1fULL
|
|
#define BLAKE2b_IV6 0x1f83d9abfb41bd6bULL
|
|
#define BLAKE2b_IV7 0x5be0cd19137e2179ULL
|
|
|
|
void BLAKE2b::reset()
|
|
{
|
|
state.h[0] = BLAKE2b_IV0 ^ 0x01010040; // Default output length of 64.
|
|
state.h[1] = BLAKE2b_IV1;
|
|
state.h[2] = BLAKE2b_IV2;
|
|
state.h[3] = BLAKE2b_IV3;
|
|
state.h[4] = BLAKE2b_IV4;
|
|
state.h[5] = BLAKE2b_IV5;
|
|
state.h[6] = BLAKE2b_IV6;
|
|
state.h[7] = BLAKE2b_IV7;
|
|
state.chunkSize = 0;
|
|
state.lengthLow = 0;
|
|
state.lengthHigh = 0;
|
|
}
|
|
|
|
/**
|
|
* \brief Resets the hash ready for a new hashing process with a specified
|
|
* output length.
|
|
*
|
|
* \param outputLength The output length to use for the final hash in bytes,
|
|
* between 1 and 64.
|
|
*/
|
|
void BLAKE2b::reset(uint8_t outputLength)
|
|
{
|
|
state.h[0] = BLAKE2b_IV0 ^ 0x01010000 ^ outputLength;
|
|
state.h[1] = BLAKE2b_IV1;
|
|
state.h[2] = BLAKE2b_IV2;
|
|
state.h[3] = BLAKE2b_IV3;
|
|
state.h[4] = BLAKE2b_IV4;
|
|
state.h[5] = BLAKE2b_IV5;
|
|
state.h[6] = BLAKE2b_IV6;
|
|
state.h[7] = BLAKE2b_IV7;
|
|
state.chunkSize = 0;
|
|
state.lengthLow = 0;
|
|
state.lengthHigh = 0;
|
|
}
|
|
|
|
void BLAKE2b::update(const void *data, size_t len)
|
|
{
|
|
// Break the input up into 1024-bit chunks and process each in turn.
|
|
const uint8_t *d = (const uint8_t *)data;
|
|
while (len > 0) {
|
|
if (state.chunkSize == 128) {
|
|
// Previous chunk was full and we know that it wasn't the
|
|
// last chunk, so we can process it now with f0 set to zero.
|
|
processChunk(0);
|
|
state.chunkSize = 0;
|
|
}
|
|
uint8_t size = 128 - state.chunkSize;
|
|
if (size > len)
|
|
size = len;
|
|
memcpy(((uint8_t *)state.m) + state.chunkSize, d, size);
|
|
state.chunkSize += size;
|
|
uint64_t temp = state.lengthLow;
|
|
state.lengthLow += size;
|
|
if (state.lengthLow < temp)
|
|
++state.lengthHigh;
|
|
len -= size;
|
|
d += size;
|
|
}
|
|
}
|
|
|
|
void BLAKE2b::finalize(void *hash, size_t len)
|
|
{
|
|
// Pad the last chunk and hash it with f0 set to all-ones.
|
|
memset(((uint8_t *)state.m) + state.chunkSize, 0, 128 - state.chunkSize);
|
|
processChunk(0xFFFFFFFFFFFFFFFFULL);
|
|
|
|
// Convert the hash into little-endian in the message buffer.
|
|
for (uint8_t posn = 0; posn < 8; ++posn)
|
|
state.m[posn] = htole64(state.h[posn]);
|
|
|
|
// Copy the hash to the caller's return buffer.
|
|
if (len > 64)
|
|
len = 64;
|
|
memcpy(hash, state.m, len);
|
|
}
|
|
|
|
void BLAKE2b::clear()
|
|
{
|
|
clean(state);
|
|
reset();
|
|
}
|
|
|
|
void BLAKE2b::resetHMAC(const void *key, size_t keyLen)
|
|
{
|
|
formatHMACKey(state.m, key, keyLen, 0x36);
|
|
state.lengthLow += 128;
|
|
processChunk(0);
|
|
}
|
|
|
|
void BLAKE2b::finalizeHMAC(const void *key, size_t keyLen, void *hash, size_t hashLen)
|
|
{
|
|
uint8_t temp[64];
|
|
finalize(temp, sizeof(temp));
|
|
formatHMACKey(state.m, key, keyLen, 0x5C);
|
|
state.lengthLow += 128;
|
|
processChunk(0);
|
|
update(temp, sizeof(temp));
|
|
finalize(hash, hashLen);
|
|
clean(temp);
|
|
}
|
|
|
|
// Permutation on the message input state for BLAKE2b.
|
|
static const uint8_t sigma[12][16] PROGMEM = {
|
|
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15},
|
|
{14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3},
|
|
{11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4},
|
|
{ 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8},
|
|
{ 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13},
|
|
{ 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9},
|
|
{12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11},
|
|
{13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10},
|
|
{ 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5},
|
|
{10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13 , 0},
|
|
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15},
|
|
{14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3},
|
|
};
|
|
|
|
// Perform a BLAKE2b quarter round operation.
|
|
#define quarterRound(a, b, c, d, i) \
|
|
do { \
|
|
uint64_t _b = (b); \
|
|
uint64_t _a = (a) + _b + state.m[pgm_read_byte(&(sigma[index][2 * (i)]))]; \
|
|
uint64_t _d = rightRotate32_64((d) ^ _a); \
|
|
uint64_t _c = (c) + _d; \
|
|
_b = rightRotate24_64(_b ^ _c); \
|
|
_a += _b + state.m[pgm_read_byte(&(sigma[index][2 * (i) + 1]))]; \
|
|
(d) = _d = rightRotate16_64(_d ^ _a); \
|
|
_c += _d; \
|
|
(a) = _a; \
|
|
(b) = rightRotate63_64(_b ^ _c); \
|
|
(c) = _c; \
|
|
} while (0)
|
|
|
|
void BLAKE2b::processChunk(uint64_t f0)
|
|
{
|
|
uint8_t index;
|
|
uint64_t v[16];
|
|
|
|
// Byte-swap the message buffer into little-endian if necessary.
|
|
#if !defined(CRYPTO_LITTLE_ENDIAN)
|
|
for (index = 0; index < 16; ++index)
|
|
state.m[index] = le64toh(state.m[index]);
|
|
#endif
|
|
|
|
// Format the block to be hashed.
|
|
memcpy(v, state.h, sizeof(state.h));
|
|
v[8] = BLAKE2b_IV0;
|
|
v[9] = BLAKE2b_IV1;
|
|
v[10] = BLAKE2b_IV2;
|
|
v[11] = BLAKE2b_IV3;
|
|
v[12] = BLAKE2b_IV4 ^ state.lengthLow;
|
|
v[13] = BLAKE2b_IV5 ^ state.lengthHigh;
|
|
v[14] = BLAKE2b_IV6 ^ f0;
|
|
v[15] = BLAKE2b_IV7;
|
|
|
|
// Perform the 12 BLAKE2b rounds.
|
|
for (index = 0; index < 12; ++index) {
|
|
// Column round.
|
|
quarterRound(v[0], v[4], v[8], v[12], 0);
|
|
quarterRound(v[1], v[5], v[9], v[13], 1);
|
|
quarterRound(v[2], v[6], v[10], v[14], 2);
|
|
quarterRound(v[3], v[7], v[11], v[15], 3);
|
|
|
|
// Diagonal round.
|
|
quarterRound(v[0], v[5], v[10], v[15], 4);
|
|
quarterRound(v[1], v[6], v[11], v[12], 5);
|
|
quarterRound(v[2], v[7], v[8], v[13], 6);
|
|
quarterRound(v[3], v[4], v[9], v[14], 7);
|
|
}
|
|
|
|
// Combine the new and old hash values.
|
|
for (index = 0; index < 8; ++index)
|
|
state.h[index] ^= (v[index] ^ v[index + 8]);
|
|
}
|