kris/pqcrypto
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Code Issues 1 Releases Wiki Activity

Add SHA224 for completeness

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This commit is contained in:
Joost Rijneveld 2019-03-11 16:48:29 +01:00
parent 83810dcc47
commit f0ffc59696
No known key found for this signature in database
GPG Key ID: A4FE39CF49CBC553
3 changed files with 72 additions and 1 deletions
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37
common/sha2.c
View File

@ -460,11 +460,18 @@ static size_t crypto_hashblocks_sha512(uint8_t *statebytes,
return inlen;
}
static const uint8_t iv_224[32] = {
0xc1, 0x05, 0x9e, 0xd8, 0x36, 0x7c, 0xd5, 0x07,
0x30, 0x70, 0xdd, 0x17, 0xf7, 0x0e, 0x59, 0x39,
0xff, 0xc0, 0x0b, 0x31, 0x68, 0x58, 0x15, 0x11,
0x64, 0xf9, 0x8f, 0xa7, 0xbe, 0xfa, 0x4f, 0xa4
};
static const uint8_t iv_256[32] = {
0x6a, 0x09, 0xe6, 0x67, 0xbb, 0x67, 0xae, 0x85,
0x3c, 0x6e, 0xf3, 0x72, 0xa5, 0x4f, 0xf5, 0x3a,
0x51, 0x0e, 0x52, 0x7f, 0x9b, 0x05, 0x68, 0x8c,
0x1f, 0x83, 0xd9, 0xab, 0x5b, 0xe0, 0xcd, 0x19,
0x1f, 0x83, 0xd9, 0xab, 0x5b, 0xe0, 0xcd, 0x19
};
static const uint8_t iv_384[64] = {
@ -485,6 +492,15 @@ static const uint8_t iv_512[64] = {
0x6b, 0x5b, 0xe0, 0xcd, 0x19, 0x13, 0x7e, 0x21, 0x79
};
void sha224_inc_init(uint8_t *state) {
for (size_t i = 0; i < 32; ++i) {
state[i] = iv_224[i];
}
for (size_t i = 32; i < 40; ++i) {
state[i] = 0;
}
}
void sha256_inc_init(uint8_t *state) {
for (size_t i = 0; i < 32; ++i) {
state[i] = iv_256[i];
@ -521,6 +537,10 @@ void sha256_inc_blocks(uint8_t *state, const uint8_t *in, size_t inblocks) {
store_bigendian_64(state + 32, bytes);
}
void sha224_inc_blocks(uint8_t *state, const uint8_t *in, size_t inblocks) {
sha256_inc_blocks(state, in, inblocks);
}
void sha512_inc_blocks(uint8_t *state, const uint8_t *in, size_t inblocks) {
uint64_t bytes = load_bigendian_64(state + 64);
@ -581,6 +601,14 @@ void sha256_inc_finalize(uint8_t *out, uint8_t *state, const uint8_t *in, size_t
}
}
void sha224_inc_finalize(uint8_t *out, uint8_t *state, const uint8_t *in, size_t inlen) {
sha256_inc_finalize(state, state, in, inlen);
for (size_t i = 0; i < 28; ++i) {
out[i] = state[i];
}
}
void sha512_inc_finalize(uint8_t *out, uint8_t *state, const uint8_t *in, size_t inlen) {
uint8_t padded[256];
uint64_t bytes = load_bigendian_64(state + 64) + inlen;
@ -638,6 +666,13 @@ void sha384_inc_finalize(uint8_t *out, uint8_t *state, const uint8_t *in, size_t
}
}
void sha224(uint8_t *out, const uint8_t *in, size_t inlen) {
uint8_t state[40];
sha224_inc_init(state);
sha224_inc_finalize(out, state, in, inlen);
}
void sha256(uint8_t *out, const uint8_t *in, size_t inlen) {
uint8_t state[40];

5
common/sha2.h
View File

@ -4,6 +4,11 @@
#include <stddef.h>
#include <stdint.h>
void sha224_inc_init(uint8_t *state);
void sha224_inc_blocks(uint8_t *state, const uint8_t *in, size_t inblocks);
void sha224_inc_finalize(uint8_t *out, uint8_t *state, const uint8_t *in, size_t inlen);
void sha224(uint8_t *out, const uint8_t *in, size_t inlen);
void sha256_inc_init(uint8_t *state);
void sha256_inc_blocks(uint8_t *state, const uint8_t *in, size_t inblocks);
void sha256_inc_finalize(uint8_t *out, uint8_t *state, const uint8_t *in, size_t inlen);

31
test/common/sha2.c
View File

@ -7,6 +7,12 @@
const unsigned char plaintext[113] = "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu";
const unsigned char expected_224[28] = {
0xc9, 0x7c, 0xa9, 0xa5, 0x59, 0x85, 0x0c, 0xe9, 0x7a, 0x04, 0xa9, 0x6d,
0xef, 0x6d, 0x99, 0xa9, 0xe0, 0xe0, 0xe2, 0xab, 0x14, 0xe6, 0xb8, 0xdf,
0x26, 0x5f, 0xc0, 0xb3
};
const unsigned char expected_256[32] = {
0xcf, 0x5b, 0x16, 0xa7, 0x78, 0xaf, 0x83, 0x80, 0x03, 0x6c, 0xe5, 0x9e,
0x7b, 0x04, 0x92, 0x37, 0x0b, 0x24, 0x9b, 0x11, 0xe8, 0xf0, 0x7a, 0x51,
@ -56,6 +62,30 @@ static int test_sha256_incremental(void) {
return 0;
}
static int test_sha224(void) {
unsigned char output[28];
int i = 0;
sha224(output, plaintext, 112);
if (memcmp(expected_224, output, 28)) {
printf("ERROR sha224 output did not match test vector.\n");
printf("Expected: ");
for (i = 0; i < 28; i++) {
printf("%02X", expected_224[i]);
}
printf("\n");
printf("Received: ");
for (i = 0; i < 28; i++) {
printf("%02X", output[i]);
}
printf("\n");
return 1;
}
return 0;
}
static int test_sha256(void) {
unsigned char output[32];
int i = 0;
@ -130,6 +160,7 @@ static int test_sha512(void) {
int main(void) {
int result = 0;
result += test_sha224();
result += test_sha256();
result += test_sha256_incremental();
result += test_sha384();