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legacy/firmware: fix ethereum message signing (#153)

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If the length of the message was exactly a power of `10` the initial `1` was omitted.
This commit is contained in:
Alex Dupre 2019-05-16 18:07:43 +02:00 committed by Pavol Rusnak
parent f7d41cbbd7
commit fc3a93dc47
1 changed files with 9 additions and 9 deletions
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18
legacy/firmware/ethereum.c
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@ -630,39 +630,39 @@ static void ethereum_message_hash(const uint8_t *message, size_t message_len,
sha3_256_Init(&ctx); sha3_256_Init(&ctx);
sha3_Update(&ctx, (const uint8_t *)"\x19" "Ethereum Signed Message:\n", 26); sha3_Update(&ctx, (const uint8_t *)"\x19" "Ethereum Signed Message:\n", 26);
uint8_t c; uint8_t c;
if (message_len > 1000000000) { if (message_len >= 1000000000) {
c = '0' + message_len / 1000000000 % 10; c = '0' + message_len / 1000000000 % 10;
sha3_Update(&ctx, &c, 1); sha3_Update(&ctx, &c, 1);
} }
if (message_len > 100000000) { if (message_len >= 100000000) {
c = '0' + message_len / 100000000 % 10; c = '0' + message_len / 100000000 % 10;
sha3_Update(&ctx, &c, 1); sha3_Update(&ctx, &c, 1);
} }
if (message_len > 10000000) { if (message_len >= 10000000) {
c = '0' + message_len / 10000000 % 10; c = '0' + message_len / 10000000 % 10;
sha3_Update(&ctx, &c, 1); sha3_Update(&ctx, &c, 1);
} }
if (message_len > 1000000) { if (message_len >= 1000000) {
c = '0' + message_len / 1000000 % 10; c = '0' + message_len / 1000000 % 10;
sha3_Update(&ctx, &c, 1); sha3_Update(&ctx, &c, 1);
} }
if (message_len > 100000) { if (message_len >= 100000) {
c = '0' + message_len / 100000 % 10; c = '0' + message_len / 100000 % 10;
sha3_Update(&ctx, &c, 1); sha3_Update(&ctx, &c, 1);
} }
if (message_len > 10000) { if (message_len >= 10000) {
c = '0' + message_len / 10000 % 10; c = '0' + message_len / 10000 % 10;
sha3_Update(&ctx, &c, 1); sha3_Update(&ctx, &c, 1);
} }
if (message_len > 1000) { if (message_len >= 1000) {
c = '0' + message_len / 1000 % 10; c = '0' + message_len / 1000 % 10;
sha3_Update(&ctx, &c, 1); sha3_Update(&ctx, &c, 1);
} }
if (message_len > 100) { if (message_len >= 100) {
c = '0' + message_len / 100 % 10; c = '0' + message_len / 100 % 10;
sha3_Update(&ctx, &c, 1); sha3_Update(&ctx, &c, 1);
} }
if (message_len > 10) { if (message_len >= 10) {
c = '0' + message_len / 10 % 10; c = '0' + message_len / 10 % 10;
sha3_Update(&ctx, &c, 1); sha3_Update(&ctx, &c, 1);
} }