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rework ecdsa_address_to_hash160 into ecdsa_address_decode

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This commit is contained in:
Pavol Rusnak 2014-01-31 15:26:51 +01:00
parent 2e4ec7fe0a
commit a40a077613
3 changed files with 55 additions and 17 deletions
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13
ecdsa.c
View File

@ -342,12 +342,12 @@ void ecdsa_get_address(const uint8_t *pub_key, uint8_t version, char *addr)
}
}
int ecdsa_address_to_hash160(const char *addr, uint8_t *hash)
int ecdsa_address_decode(const char *addr, uint8_t *out)
{
if (!addr) return 0;
const char code[] = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
bignum256 num;
uint8_t buf[32];
uint8_t buf[32], check[32];
bn_zero(&num);
uint32_t k;
int i;
@ -364,7 +364,14 @@ int ecdsa_address_to_hash160(const char *addr, uint8_t *hash)
}
}
bn_write_be(&num, buf);
memcpy(hash, buf + 8, 20);
// compute address hash
SHA256_Raw(buf + 7, 21, check);
SHA256_Raw(check, 32, check);
// check if valid
if (memcmp(buf + 7 + 21, check, 4) != 0) {
return 0;
}
memcpy(out, buf + 7, 21);
return 1;
}

2
ecdsa.h
View File

@ -40,7 +40,7 @@ int ecdsa_sign(const uint8_t *priv_key, const uint8_t *msg, uint32_t msg_len, ui
void ecdsa_get_public_key33(const uint8_t *priv_key, uint8_t *pub_key);
void ecdsa_get_public_key65(const uint8_t *priv_key, uint8_t *pub_key);
void ecdsa_get_address(const uint8_t *pub_key, uint8_t version, char *addr);
int ecdsa_address_to_hash160(const char *addr, uint8_t *hash);
int ecdsa_address_decode(const char *addr, uint8_t *out);
int ecdsa_read_pubkey(const uint8_t *pub_key, curve_point *pub);
int ecdsa_verify(const uint8_t *pub_key, const uint8_t *sig, const uint8_t *msg, uint32_t msg_len);

57
tests.c
View File

@ -491,23 +491,54 @@ START_TEST(test_address)
}
END_TEST
START_TEST(test_address_to_hash)
START_TEST(test_address_decode)
{
uint8_t hash[20];
int res;
uint8_t decode[21];
// byte 0 : address type
// bytes 1-20 : pubkey hash 160
res = ecdsa_address_decode("1JwSSubhmg6iPtRjtyqhUYYH7bZg3Lfy1T", decode);
ck_assert_int_eq(res, 1);
ck_assert_mem_eq(decode, fromhex("00c4c5d791fcb4654a1ef5e03fe0ad3d9c598f9827"), 21);
ecdsa_address_to_hash160("1JwSSubhmg6iPtRjtyqhUYYH7bZg3Lfy1T", hash); ck_assert_mem_eq(hash, fromhex("c4c5d791fcb4654a1ef5e03fe0ad3d9c598f9827"), 20);
ecdsa_address_to_hash160("myTPjxggahXyAzuMcYp5JTkbybANyLsYBW", hash); ck_assert_mem_eq(hash, fromhex("c4c5d791fcb4654a1ef5e03fe0ad3d9c598f9827"), 20);
ecdsa_address_to_hash160("NEWoeZ6gh4CGvRgFAoAGh4hBqpxizGT6gZ", hash); ck_assert_mem_eq(hash, fromhex("c4c5d791fcb4654a1ef5e03fe0ad3d9c598f9827"), 20);
ecdsa_address_to_hash160("LdAPi7uXrLLmeh7u57pzkZc3KovxEDYRJq", hash); ck_assert_mem_eq(hash, fromhex("c4c5d791fcb4654a1ef5e03fe0ad3d9c598f9827"), 20);
res = ecdsa_address_decode("myTPjxggahXyAzuMcYp5JTkbybANyLsYBW", decode);
ck_assert_int_eq(res, 1);
ck_assert_mem_eq(decode, fromhex("6fc4c5d791fcb4654a1ef5e03fe0ad3d9c598f9827"), 21);
ecdsa_address_to_hash160("1C7zdTfnkzmr13HfA2vNm5SJYRK6nEKyq8", hash); ck_assert_mem_eq(hash, fromhex("79fbfc3f34e7745860d76137da68f362380c606c"), 20);
ecdsa_address_to_hash160("mrdwvWkma2D6n9mGsbtkazedQQuoksnqJV", hash); ck_assert_mem_eq(hash, fromhex("79fbfc3f34e7745860d76137da68f362380c606c"), 20);
ecdsa_address_to_hash160("N7hMq7AmgNsQXaYARrEwybbDGei9mcPNqr", hash); ck_assert_mem_eq(hash, fromhex("79fbfc3f34e7745860d76137da68f362380c606c"), 20);
ecdsa_address_to_hash160("LWLwtfycqf1uFqypLAug36W4kdgNwrZdNs", hash); ck_assert_mem_eq(hash, fromhex("79fbfc3f34e7745860d76137da68f362380c606c"), 20);
res = ecdsa_address_decode("NEWoeZ6gh4CGvRgFAoAGh4hBqpxizGT6gZ", decode);
ck_assert_int_eq(res, 1);
ck_assert_mem_eq(decode, fromhex("34c4c5d791fcb4654a1ef5e03fe0ad3d9c598f9827"), 21);
res = ecdsa_address_decode("LdAPi7uXrLLmeh7u57pzkZc3KovxEDYRJq", decode);
ck_assert_int_eq(res, 1);
ck_assert_mem_eq(decode, fromhex("30c4c5d791fcb4654a1ef5e03fe0ad3d9c598f9827"), 21);
res = ecdsa_address_decode("1C7zdTfnkzmr13HfA2vNm5SJYRK6nEKyq8", decode);
ck_assert_int_eq(res, 1);
ck_assert_mem_eq(decode, fromhex("0079fbfc3f34e7745860d76137da68f362380c606c"), 21);
res = ecdsa_address_decode("mrdwvWkma2D6n9mGsbtkazedQQuoksnqJV", decode);
ck_assert_int_eq(res, 1);
ck_assert_mem_eq(decode, fromhex("6f79fbfc3f34e7745860d76137da68f362380c606c"), 21);
res = ecdsa_address_decode("N7hMq7AmgNsQXaYARrEwybbDGei9mcPNqr", decode);
ck_assert_int_eq(res, 1);
ck_assert_mem_eq(decode, fromhex("3479fbfc3f34e7745860d76137da68f362380c606c"), 21);
res = ecdsa_address_decode("LWLwtfycqf1uFqypLAug36W4kdgNwrZdNs", decode);
ck_assert_int_eq(res, 1);
ck_assert_mem_eq(decode, fromhex("3079fbfc3f34e7745860d76137da68f362380c606c"), 21);
// invalid char
res = ecdsa_address_decode("1JwSSubhmg6i000jtyqhUYYH7bZg3Lfy1T", decode);
ck_assert_int_eq(res, 0);
// invalid address
res = ecdsa_address_decode("1111Subhmg6iPtRjtyqhUYYH7bZg3Lfy1T", decode);
ck_assert_int_eq(res, 0);
}
END_TEST
// define test suite and cases
Suite *test_suite(void)
{
@ -532,8 +563,8 @@ Suite *test_suite(void)
tcase_add_test(tc, test_address);
suite_add_tcase(s, tc);
tc = tcase_create("address_to_hash");
tcase_add_test(tc, test_address_to_hash);
tc = tcase_create("address_decode");
tcase_add_test(tc, test_address_decode);
suite_add_tcase(s, tc);
tc = tcase_create("rijndael");