8 #include <botan/blake2b.h>
9 #include <botan/exceptn.h>
10 #include <botan/mem_ops.h>
11 #include <botan/loadstor.h>
12 #include <botan/rotate.h>
20 0x6a09e667f3bcc908ULL, 0xbb67ae8584caa73bULL,
21 0x3c6ef372fe94f82bULL, 0xa54ff53a5f1d36f1ULL,
22 0x510e527fade682d1ULL, 0x9b05688c2b3e6c1fULL,
23 0x1f83d9abfb41bd6bULL, 0x5be0cd19137e2179ULL
26 const uint64_t blake2b_sigma[12][16] = {
27 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 } ,
28 { 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 } ,
29 { 11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4 } ,
30 { 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8 } ,
31 { 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13 } ,
32 { 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9 } ,
33 { 12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11 } ,
34 { 13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10 } ,
35 { 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5 } ,
36 { 10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13 , 0 } ,
37 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 } ,
38 { 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 }
43 m_output_bits(output_bits),
48 if(output_bits == 0 || output_bits % 8 != 0
57 void Blake2b::state_init()
59 std::copy(std::begin(blake2b_IV), std::end(blake2b_IV), m_H.begin());
65 void Blake2b::compress(
bool lastblock)
69 uint64_t*
const H = m_H.data();
70 const uint8_t*
const block = m_buffer.data();
77 for(
int i = 0; i < 16; i++)
82 for(
int i = 0; i < 8; i++)
85 v[i + 8] = blake2b_IV[i];
93 #define G(r, i, a, b, c, d) \
95 a = a + b + m[blake2b_sigma[r][2 * i + 0]]; \
96 d = rotate_right<uint64_t>(d ^ a, 32); \
98 b = rotate_right<uint64_t>(b ^ c, 24); \
99 a = a + b + m[blake2b_sigma[r][2 * i + 1]]; \
100 d = rotate_right<uint64_t>(d ^ a, 16); \
102 b = rotate_right<uint64_t>(b ^ c, 63); \
107 G(r, 0, v[0], v[4], v[8], v[12]); \
108 G(r, 1, v[1], v[5], v[9], v[13]); \
109 G(r, 2, v[2], v[6], v[10], v[14]); \
110 G(r, 3, v[3], v[7], v[11], v[15]); \
111 G(r, 4, v[0], v[5], v[10], v[15]); \
112 G(r, 5, v[1], v[6], v[11], v[12]); \
113 G(r, 6, v[2], v[7], v[8], v[13]); \
114 G(r, 7, v[3], v[4], v[9], v[14]); \
130 for(
int i = 0; i < 8; i++)
132 H[i] ^= v[i] ^ v[i + 8];
139 void Blake2b::increment_counter(
const uint64_t inc)
148 void Blake2b::add_data(
const uint8_t input[],
size_t length)
150 if(!input || length == 0)
155 uint8_t*
const buffer = m_buffer.data();
163 std::memcpy(buffer + m_buflen, input, length);
168 std::memcpy(buffer + m_buflen, input, fill);
178 void Blake2b::final_result(uint8_t output[])
185 uint8_t*
const buffer = m_buffer.data();
186 const uint64_t*
const H =
static_cast<const uint64_t*
>(m_H.data());
190 increment_counter(m_buflen);
193 for (uint16_t i = 0; i < outlen; i++)
195 output[i] = (H[i >> 3] >> (8 * (i & 7))) & 0xFF;
208 return new Blake2b(m_output_bits);
HashFunction * clone() const override
Blake2b(size_t output_bits=512)
std::string to_string(const BER_Object &obj)
uint64_t load_le< uint64_t >(const uint8_t in[], size_t off)
std::string name() const override
size_t output_length() const override
void zeroise(std::vector< T, Alloc > &vec)