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fix(crypto): fix fingerprints for curve25519 and ed25519

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This commit is contained in:
Ondřej Vejpustek 2024-08-06 15:20:17 +02:00
parent 5912c1e820
commit 865ca5f0a9
4 changed files with 42 additions and 7 deletions
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1
core/.changelog.d/4093.fixed Normal file
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@ -0,0 +1 @@
Fixed SLIP-10 fingerprints for ed25519 and curve25519.

5
crypto/bip32.c
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@ -186,6 +186,11 @@ uint32_t hdnode_fingerprint(HDNode *node) {
uint32_t fingerprint = 0;
hdnode_fill_public_key(node);
if (node->public_key[0] == 0x01) {
// The prefix 0x01 indicates curve25519 or ed25519
// In this case, SLIP-10 uses the prefix 0x00 to calculate the fingerprint
node->public_key[0] = 0x00;
}
hasher_Raw(node->curve->hasher_pubkey, node->public_key, 33, digest);
fingerprint = ((uint32_t)digest[0] << 24) + (digest[1] << 16) +
(digest[2] << 8) + digest[3];

42
crypto/tests/test_check.c
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@ -2633,9 +2633,11 @@ START_TEST(test_bip32_nist_repeat) {
}
END_TEST
// test vector 1 from https://en.bitcoin.it/wiki/BIP_0032_TestVectors
// https://github.com/satoshilabs/slips/blob/master/slip-0010.md#test-vector-1-for-ed25519
START_TEST(test_bip32_ed25519_vector_1) {
HDNode node;
uint32_t fingerprint;
int r;
// init m
hdnode_from_seed(fromhex("000102030405060708090a0b0c0d0e0f"), 16,
@ -2660,7 +2662,10 @@ START_TEST(test_bip32_ed25519_vector_1) {
33);
// [Chain m/0']
hdnode_private_ckd_prime(&node, 0);
fingerprint = hdnode_fingerprint(&node);
ck_assert_uint_eq(fingerprint, 0xddebc675);
r = hdnode_private_ckd_prime(&node, 0);
ck_assert_int_eq(r, 1);
ck_assert_mem_eq(
node.chain_code,
fromhex(
@ -2679,7 +2684,10 @@ START_TEST(test_bip32_ed25519_vector_1) {
33);
// [Chain m/0'/1']
hdnode_private_ckd_prime(&node, 1);
fingerprint = hdnode_fingerprint(&node);
ck_assert_uint_eq(fingerprint, 0x13dab143);
r = hdnode_private_ckd_prime(&node, 1);
ck_assert_int_eq(r, 1);
ck_assert_mem_eq(
node.chain_code,
fromhex(
@ -2698,7 +2706,10 @@ START_TEST(test_bip32_ed25519_vector_1) {
33);
// [Chain m/0'/1'/2']
hdnode_private_ckd_prime(&node, 2);
fingerprint = hdnode_fingerprint(&node);
ck_assert_uint_eq(fingerprint, 0xebe4cb29);
r = hdnode_private_ckd_prime(&node, 2);
ck_assert_int_eq(r, 1);
ck_assert_mem_eq(
node.chain_code,
fromhex(
@ -2717,7 +2728,10 @@ START_TEST(test_bip32_ed25519_vector_1) {
33);
// [Chain m/0'/1'/2'/2']
hdnode_private_ckd_prime(&node, 2);
fingerprint = hdnode_fingerprint(&node);
ck_assert_uint_eq(fingerprint, 0x316ec1c6);
r = hdnode_private_ckd_prime(&node, 2);
ck_assert_int_eq(r, 1);
ck_assert_mem_eq(
node.chain_code,
fromhex(
@ -2736,7 +2750,10 @@ START_TEST(test_bip32_ed25519_vector_1) {
33);
// [Chain m/0'/1'/2'/2'/1000000000']
hdnode_private_ckd_prime(&node, 1000000000);
fingerprint = hdnode_fingerprint(&node);
ck_assert_uint_eq(fingerprint, 0xd6322ccd);
r = hdnode_private_ckd_prime(&node, 1000000000);
ck_assert_int_eq(r, 1);
ck_assert_mem_eq(
node.chain_code,
fromhex(
@ -2756,9 +2773,10 @@ START_TEST(test_bip32_ed25519_vector_1) {
}
END_TEST
// test vector 2 from https://en.bitcoin.it/wiki/BIP_0032_TestVectors
// https://github.com/satoshilabs/slips/blob/master/slip-0010.md#test-vector-2-for-ed25519
START_TEST(test_bip32_ed25519_vector_2) {
HDNode node;
uint32_t fingerprint;
int r;
// init m
@ -2787,6 +2805,8 @@ START_TEST(test_bip32_ed25519_vector_2) {
33);
// [Chain m/0']
fingerprint = hdnode_fingerprint(&node);
ck_assert_uint_eq(fingerprint, 0x31981b50);
r = hdnode_private_ckd_prime(&node, 0);
ck_assert_int_eq(r, 1);
ck_assert_mem_eq(
@ -2807,6 +2827,8 @@ START_TEST(test_bip32_ed25519_vector_2) {
33);
// [Chain m/0'/2147483647']
fingerprint = hdnode_fingerprint(&node);
ck_assert_uint_eq(fingerprint, 0x1e9411b1);
r = hdnode_private_ckd_prime(&node, 2147483647);
ck_assert_int_eq(r, 1);
ck_assert_mem_eq(
@ -2827,6 +2849,8 @@ START_TEST(test_bip32_ed25519_vector_2) {
33);
// [Chain m/0'/2147483647'/1']
fingerprint = hdnode_fingerprint(&node);
ck_assert_uint_eq(fingerprint, 0xfcadf38c);
r = hdnode_private_ckd_prime(&node, 1);
ck_assert_int_eq(r, 1);
ck_assert_mem_eq(
@ -2847,6 +2871,8 @@ START_TEST(test_bip32_ed25519_vector_2) {
33);
// [Chain m/0'/2147483647'/1'/2147483646']
fingerprint = hdnode_fingerprint(&node);
ck_assert_uint_eq(fingerprint, 0xaca70953);
r = hdnode_private_ckd_prime(&node, 2147483646);
ck_assert_int_eq(r, 1);
ck_assert_mem_eq(
@ -2867,6 +2893,8 @@ START_TEST(test_bip32_ed25519_vector_2) {
33);
// [Chain m/0'/2147483647'/1'/2147483646'/2']
fingerprint = hdnode_fingerprint(&node);
ck_assert_uint_eq(fingerprint, 0x422c654b);
r = hdnode_private_ckd_prime(&node, 2);
ck_assert_int_eq(r, 1);
ck_assert_mem_eq(

1
legacy/firmware/.changelog.d/4093.fixed Normal file
View File

@ -0,0 +1 @@
Fixed SLIP-10 fingerprints for ed25519 and curve25519.