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Starkex v2 integration

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This commit is contained in:
BTChip github
2020-11-24 00:11:55 +01:00
committed by TamtamHero
parent 61424e7907
commit 9854d12753
24 changed files with 1056 additions and 183 deletions
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24
src/stark_crypto.c
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@@ -9,21 +9,21 @@ static unsigned char const C_cx_Stark256_n[] = {
//n: 0x0800000000000010ffffffffffffffffb781126dcae7b2321e66a241adc64d2f
0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xb7, 0x81, 0x12, 0x6d, 0xca, 0xe7, 0xb2, 0x32, 0x1e, 0x66, 0xa2, 0x41, 0xad, 0xc6, 0x4d, 0x2f};
// C_cx_secp256k1_n - (C_cx_secp256k1_n % C_cx_Stark256_n)
static unsigned char const STARK_DERIVE_BIAS[] = {
0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x0e, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf7,
0x38, 0xa1, 0x3b, 0x4b, 0x92, 0x0e, 0x94, 0x11, 0xae, 0x6d, 0xa5, 0xf4, 0x0b, 0x03, 0x58, 0xb1
};
};
void starkDerivePrivateKey(uint32_t *bip32Path, uint32_t bip32PathLength, uint8_t *privateKeyData) {
#if 0
// Sanity check
void starkDerivePrivateKey(uint32_t *bip32Path, uint32_t bip32PathLength, uint8_t *privateKeyData) {
#if 0
// Sanity check
if (bip32Path[0] != STARK_BIP32_PATH_0) {
PRINTF("Invalid Stark derivation path %d\n", bip32Path[0]);
THROW(0x6a80);
}
os_perso_derive_node_bip32(CX_CURVE_256K1, bip32Path, bip32PathLength, privateKeyData, NULL);
os_perso_derive_node_bip32(CX_CURVE_256K1, bip32Path, bip32PathLength, privateKeyData, NULL);
PRINTF("Private key before processing %.*H\n", 32, privateKeyData);
// TODO - support additional schemes
cx_math_modm(privateKeyData, 32, C_cx_Stark256_n, 32);
@@ -31,30 +31,32 @@ void starkDerivePrivateKey(uint32_t *bip32Path, uint32_t bip32PathLength, uint8_
#else
uint8_t tmp[33];
uint8_t index = 0;
// Sanity check
// Sanity check
if ((bip32PathLength < 2) || (bip32Path[0] != STARK_BIP32_PATH_0) || (bip32Path[1] != STARK_BIP32_PATH_1)) {
PRINTF("Invalid Stark derivation path %d %d\n", bip32Path[0], bip32Path[1]);
THROW(0x6a80);
}
os_perso_derive_node_bip32(CX_CURVE_256K1, bip32Path, bip32PathLength, tmp, NULL);
os_perso_derive_node_bip32(CX_CURVE_256K1, bip32Path, bip32PathLength, tmp, NULL);
PRINTF("Private key before processing %.*H\n", 32, tmp);
for(;;) {
tmp[32] = index;
cx_hash_sha256(tmp, 33, privateKeyData, 32);
PRINTF("Key hash %.*H\n", 32, privateKeyData);
if (cx_math_cmp(privateKeyData, STARK_DERIVE_BIAS, 32) < 0) {
cx_math_modm(privateKeyData, 32, C_cx_Stark256_n, 32);
break;
}
index++;
}
PRINTF("Key result %.*H\n", 32, privateKeyData);
#endif
#endif
}
void stark_get_amount_string(uint8_t *contractAddress, uint8_t *quantum256, uint8_t *amount64, char *tmp100, char *target100) {
uint256_t amountPre, quantum, amount;
uint8_t decimals;
char *ticker = (char*)PIC(chainConfig->coinName);
uint8_t decimals;
char *ticker = (char*)PIC(chainConfig->coinName);
PRINTF("stark_get_amount_string %.*H\n", 20, contractAddress);