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fix: error in reference

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This commit is contained in:
Thomas Florian 2022-06-29 19:10:43 +02:00
parent 331ed1750f
commit 9133601088
1 changed files with 21 additions and 18 deletions
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5
Implementierung/src/md2.c
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@ -37,7 +37,8 @@ void md2_checksum(size_t len, uint8_t* buf) {
for (int i = 0; i < len / 16; i++) { for (int i = 0; i < len / 16; i++) {
for (int j = 0; j < 16; j++) { for (int j = 0; j < 16; j++) {
u_int8_t c = buf[i * 16 + j]; u_int8_t c = buf[i * 16 + j];
l = buf[len + j] = PI_SUBST[c ^ l]; // reference is wrong. It says: Set C[j] to S[c xor L]. But it should be:
l = buf[len + j] ^= PI_SUBST[c ^ l];
} }
} }
} }
@ -54,6 +55,8 @@ void md2_hash(size_t len, const uint8_t buf[len], uint8_t out[16]) {
uint8_t* newBuf = calloc(len + 16, sizeof(uint8_t)); uint8_t* newBuf = calloc(len + 16, sizeof(uint8_t));
memcpy(newBuf, buf, len - paddingNeeded); memcpy(newBuf, buf, len - paddingNeeded);
printBuf(len + 16, newBuf);
while (paddingNeeded > 0) { while (paddingNeeded > 0) {
newBuf[len - paddingNeeded] = originalPadding; newBuf[len - paddingNeeded] = originalPadding;
paddingNeeded--; paddingNeeded--;