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Add EIP 1191 checksum support (RSK)

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This commit is contained in:
BTChip github
2018-08-02 11:16:25 +02:00
parent 6603fa6972
commit b9e1e4e42d
1 changed files with 19 additions and 4 deletions
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23
src_common/ethUtils.c
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@@ -27,6 +27,9 @@
#include "cx.h"
#include <stdbool.h>
#include "ethUtils.h"
#include "chainConfig.h"
extern chain_config_t *chainConfig;
bool rlpCanDecode(uint8_t *buffer, uint32_t bufferLength, bool *valid) {
if (*buffer <= 0x7f) {
@@ -184,15 +187,27 @@ void getEthAddressStringFromKey(cx_ecfp_public_key_t *publicKey, uint8_t *out,
void getEthAddressStringFromBinary(uint8_t *address, uint8_t *out,
cx_sha3_t *sha3Context) {
uint8_t hashChecksum[32];
uint8_t tmp[40];
uint8_t tmp[100];
uint8_t i;
bool eip1191 = false;
uint32_t offset = 0;
switch(chainConfig->chainId) {
case 30:
case 31:
eip1191 = true;
break;
}
if (eip1191) {
snprintf(tmp, sizeof(tmp), "%d0x", chainConfig->chainId);
offset = strlen(tmp);
}
for (i = 0; i < 20; i++) {
uint8_t digit = address[i];
tmp[2 * i] = HEXDIGITS[(digit >> 4) & 0x0f];
tmp[2 * i + 1] = HEXDIGITS[digit & 0x0f];
tmp[offset + 2 * i] = HEXDIGITS[(digit >> 4) & 0x0f];
tmp[offset + 2 * i + 1] = HEXDIGITS[digit & 0x0f];
}
cx_keccak_init(sha3Context, 256);
cx_hash((cx_hash_t*)sha3Context, CX_LAST, tmp, 40, hashChecksum);
cx_hash((cx_hash_t*)sha3Context, CX_LAST, tmp, offset + 40, hashChecksum);
for (i = 0; i < 40; i++) {
uint8_t hashDigit = hashChecksum[i / 2];
if ((i % 2) == 0) {