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compute fingerprints

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This commit is contained in:
Pavol Rusnak 2014-01-14 15:29:46 +01:00
parent ed7e2e5058
commit 8764a03453
2 changed files with 25 additions and 0 deletions
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12
bip32.c
View File

@ -4,6 +4,8 @@
#include "hmac.h"
#include "ecdsa.h"
#include "bip32.h"
#include "sha2.h"
#include "ripemd160.h"
uint8_t hdnode_coin_version = 0x00;
@ -36,6 +38,7 @@ int hdnode_private_ckd(HDNode *inout, uint32_t i)
{
uint8_t data[1 + 32 + 4];
uint8_t I[32 + 32];
uint8_t fingerprint[32];
bignum256 a, b;
if (i & 0x80000000) { // private derivation
@ -46,6 +49,10 @@ int hdnode_private_ckd(HDNode *inout, uint32_t i)
}
write_be(data + 33, i);
SHA256_Raw(inout->public_key, 33, fingerprint);
ripemd160(fingerprint, 32, fingerprint);
inout->fingerprint = (fingerprint[0] << 24) + (fingerprint[1] << 16) + (fingerprint[2] << 8) + fingerprint[3];
bn_read_be(inout->private_key, &a);
hmac_sha512(inout->chain_code, 32, data, sizeof(data), I);
@ -68,6 +75,7 @@ int hdnode_public_ckd(HDNode *inout, uint32_t i)
{
uint8_t data[1 + 32 + 4];
uint8_t I[32 + 32];
uint8_t fingerprint[32];
curve_point a, b;
bignum256 c;
@ -78,6 +86,10 @@ int hdnode_public_ckd(HDNode *inout, uint32_t i)
}
write_be(data + 33, i);
SHA256_Raw(inout->public_key, 33, fingerprint);
ripemd160(fingerprint, 32, fingerprint);
inout->fingerprint = (fingerprint[0] << 24) + (fingerprint[1] << 16) + (fingerprint[2] << 8) + fingerprint[3];
memset(inout->private_key, 0, 32);
if (!ecdsa_read_pubkey(inout->public_key, &a)) {
return 0;

13
tests.c
View File

@ -83,6 +83,7 @@ START_TEST(test_bip32_vector_1)
hdnode_from_seed(fromhex("000102030405060708090a0b0c0d0e0f"), 16, &node);
// [Chain m]
ck_assert_int_eq(node.fingerprint, 0x00000000);
ck_assert_mem_eq(node.chain_code, fromhex("873dff81c02f525623fd1fe5167eac3a55a049de3d314bb42ee227ffed37d508"), 32);
ck_assert_mem_eq(node.private_key, fromhex("e8f32e723decf4051aefac8e2c93c9c5b214313817cdb01a1494b917c8436b35"), 32);
ck_assert_mem_eq(node.public_key, fromhex("0339a36013301597daef41fbe593a02cc513d0b55527ec2df1050e2e8ff49c85c2"), 33);
@ -90,6 +91,7 @@ START_TEST(test_bip32_vector_1)
// [Chain m/0']
hdnode_private_ckd_prime(&node, 0);
ck_assert_int_eq(node.fingerprint, 0x3442193e);
ck_assert_mem_eq(node.chain_code, fromhex("47fdacbd0f1097043b78c63c20c34ef4ed9a111d980047ad16282c7ae6236141"), 32);
ck_assert_mem_eq(node.private_key, fromhex("edb2e14f9ee77d26dd93b4ecede8d16ed408ce149b6cd80b0715a2d911a0afea"), 32);
ck_assert_mem_eq(node.public_key, fromhex("035a784662a4a20a65bf6aab9ae98a6c068a81c52e4b032c0fb5400c706cfccc56"), 33);
@ -97,6 +99,7 @@ START_TEST(test_bip32_vector_1)
// [Chain m/0'/1]
hdnode_private_ckd(&node, 1);
ck_assert_int_eq(node.fingerprint, 0x5c1bd648);
ck_assert_mem_eq(node.chain_code, fromhex("2a7857631386ba23dacac34180dd1983734e444fdbf774041578e9b6adb37c19"), 32);
ck_assert_mem_eq(node.private_key, fromhex("3c6cb8d0f6a264c91ea8b5030fadaa8e538b020f0a387421a12de9319dc93368"), 32);
ck_assert_mem_eq(node.public_key, fromhex("03501e454bf00751f24b1b489aa925215d66af2234e3891c3b21a52bedb3cd711c"), 33);
@ -104,6 +107,7 @@ START_TEST(test_bip32_vector_1)
// [Chain m/0'/1/2']
hdnode_private_ckd_prime(&node, 2);
ck_assert_int_eq(node.fingerprint, 0xbef5a2f9);
ck_assert_mem_eq(node.chain_code, fromhex("04466b9cc8e161e966409ca52986c584f07e9dc81f735db683c3ff6ec7b1503f"), 32);
ck_assert_mem_eq(node.private_key, fromhex("cbce0d719ecf7431d88e6a89fa1483e02e35092af60c042b1df2ff59fa424dca"), 32);
ck_assert_mem_eq(node.public_key, fromhex("0357bfe1e341d01c69fe5654309956cbea516822fba8a601743a012a7896ee8dc2"), 33);
@ -111,6 +115,7 @@ START_TEST(test_bip32_vector_1)
// [Chain m/0'/1/2'/2]
hdnode_private_ckd(&node, 2);
ck_assert_int_eq(node.fingerprint, 0xee7ab90c);
ck_assert_mem_eq(node.chain_code, fromhex("cfb71883f01676f587d023cc53a35bc7f88f724b1f8c2892ac1275ac822a3edd"), 32);
ck_assert_mem_eq(node.private_key, fromhex("0f479245fb19a38a1954c5c7c0ebab2f9bdfd96a17563ef28a6a4b1a2a764ef4"), 32);
ck_assert_mem_eq(node.public_key, fromhex("02e8445082a72f29b75ca48748a914df60622a609cacfce8ed0e35804560741d29"), 33);
@ -118,6 +123,7 @@ START_TEST(test_bip32_vector_1)
// [Chain m/0'/1/2'/2/1000000000]
hdnode_private_ckd(&node, 1000000000);
ck_assert_int_eq(node.fingerprint, 0xd880d7d8);
ck_assert_mem_eq(node.chain_code, fromhex("c783e67b921d2beb8f6b389cc646d7263b4145701dadd2161548a8b078e65e9e"), 32);
ck_assert_mem_eq(node.private_key, fromhex("471b76e389e528d6de6d816857e012c5455051cad6660850e58372a6c3e6e7c8"), 32);
ck_assert_mem_eq(node.public_key, fromhex("022a471424da5e657499d1ff51cb43c47481a03b1e77f951fe64cec9f5a48f7011"), 33);
@ -135,6 +141,7 @@ START_TEST(test_bip32_vector_2)
hdnode_from_seed(fromhex("fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e7b7875726f6c696663605d5a5754514e4b484542"), 64, &node);
// [Chain m]
ck_assert_int_eq(node.fingerprint, 0x00000000);
ck_assert_mem_eq(node.chain_code, fromhex("60499f801b896d83179a4374aeb7822aaeaceaa0db1f85ee3e904c4defbd9689"), 32);
ck_assert_mem_eq(node.private_key, fromhex("4b03d6fc340455b363f51020ad3ecca4f0850280cf436c70c727923f6db46c3e"), 32);
ck_assert_mem_eq(node.public_key, fromhex("03cbcaa9c98c877a26977d00825c956a238e8dddfbd322cce4f74b0b5bd6ace4a7"), 33);
@ -143,6 +150,7 @@ START_TEST(test_bip32_vector_2)
// [Chain m/0]
r = hdnode_private_ckd(&node, 0);
ck_assert_int_eq(r, 1);
ck_assert_int_eq(node.fingerprint, 0xbd16bee5);
ck_assert_mem_eq(node.chain_code, fromhex("f0909affaa7ee7abe5dd4e100598d4dc53cd709d5a5c2cac40e7412f232f7c9c"), 32);
ck_assert_mem_eq(node.private_key, fromhex("abe74a98f6c7eabee0428f53798f0ab8aa1bd37873999041703c742f15ac7e1e"), 32);
ck_assert_mem_eq(node.public_key, fromhex("02fc9e5af0ac8d9b3cecfe2a888e2117ba3d089d8585886c9c826b6b22a98d12ea"), 33);
@ -151,6 +159,7 @@ START_TEST(test_bip32_vector_2)
// [Chain m/0/2147483647']
r = hdnode_private_ckd_prime(&node, 2147483647);
ck_assert_int_eq(r, 1);
ck_assert_int_eq(node.fingerprint, 0x5a61ff8e);
ck_assert_mem_eq(node.chain_code, fromhex("be17a268474a6bb9c61e1d720cf6215e2a88c5406c4aee7b38547f585c9a37d9"), 32);
ck_assert_mem_eq(node.private_key, fromhex("877c779ad9687164e9c2f4f0f4ff0340814392330693ce95a58fe18fd52e6e93"), 32);
ck_assert_mem_eq(node.public_key, fromhex("03c01e7425647bdefa82b12d9bad5e3e6865bee0502694b94ca58b666abc0a5c3b"), 33);
@ -159,6 +168,7 @@ START_TEST(test_bip32_vector_2)
// [Chain m/0/2147483647'/1]
r = hdnode_private_ckd(&node, 1);
ck_assert_int_eq(r, 1);
ck_assert_int_eq(node.fingerprint, 0xd8ab4937);
ck_assert_mem_eq(node.chain_code, fromhex("f366f48f1ea9f2d1d3fe958c95ca84ea18e4c4ddb9366c336c927eb246fb38cb"), 32);
ck_assert_mem_eq(node.private_key, fromhex("704addf544a06e5ee4bea37098463c23613da32020d604506da8c0518e1da4b7"), 32);
ck_assert_mem_eq(node.public_key, fromhex("03a7d1d856deb74c508e05031f9895dab54626251b3806e16b4bd12e781a7df5b9"), 33);
@ -167,6 +177,7 @@ START_TEST(test_bip32_vector_2)
// [Chain m/0/2147483647'/1/2147483646']
r = hdnode_private_ckd_prime(&node, 2147483646);
ck_assert_int_eq(r, 1);
ck_assert_int_eq(node.fingerprint, 0x78412e3a);
ck_assert_mem_eq(node.chain_code, fromhex("637807030d55d01f9a0cb3a7839515d796bd07706386a6eddf06cc29a65a0e29"), 32);
ck_assert_mem_eq(node.private_key, fromhex("f1c7c871a54a804afe328b4c83a1c33b8e5ff48f5087273f04efa83b247d6a2d"), 32);
ck_assert_mem_eq(node.public_key, fromhex("02d2b36900396c9282fa14628566582f206a5dd0bcc8d5e892611806cafb0301f0"), 33);
@ -175,6 +186,7 @@ START_TEST(test_bip32_vector_2)
// [Chain m/0/2147483647'/1/2147483646'/2]
r = hdnode_private_ckd(&node, 2);
ck_assert_int_eq(r, 1);
ck_assert_int_eq(node.fingerprint, 0x31a507b8);
ck_assert_mem_eq(node.chain_code, fromhex("9452b549be8cea3ecb7a84bec10dcfd94afe4d129ebfd3b3cb58eedf394ed271"), 32);
ck_assert_mem_eq(node.private_key, fromhex("bb7d39bdb83ecf58f2fd82b6d918341cbef428661ef01ab97c28a4842125ac23"), 32);
ck_assert_mem_eq(node.public_key, fromhex("024d902e1a2fc7a8755ab5b694c575fce742c48d9ff192e63df5193e4c7afe1f9c"), 33);
@ -187,6 +199,7 @@ START_TEST(test_bip32_vector_2)
// [Chain m/0]
r = hdnode_public_ckd(&node, 0);
ck_assert_int_eq(r, 1);
ck_assert_int_eq(node.fingerprint, 0xbd16bee5);
ck_assert_mem_eq(node.chain_code, fromhex("f0909affaa7ee7abe5dd4e100598d4dc53cd709d5a5c2cac40e7412f232f7c9c"), 32);
ck_assert_mem_eq(node.private_key, fromhex("0000000000000000000000000000000000000000000000000000000000000000"), 32);
ck_assert_mem_eq(node.public_key, fromhex("02fc9e5af0ac8d9b3cecfe2a888e2117ba3d089d8585886c9c826b6b22a98d12ea"), 33);