48
edits
Changes
Jump to navigation
Jump to search
Edited with easier to read code
Line 146:
Line 146:
if (halfCount) {+ size_t i;+ for (i = halfCount - 1; i > 0; i--) {
− plain[i] = cipher[i] ^ cipher[i - 1];
− }
−
uint16_t * plain = (uint16_t *) voidplain;
uint16_t * plain = (uint16_t *) voidplain;
uint16_t * cipher = (uint16_t *) voidcipher;
uint16_t * cipher = (uint16_t *) voidcipher;
− size_t halfCount = size / sizeof(uint16_t);
+ size_t halfCount = size >> 1; // Divide by 2 rounding towards zero
uint16_t xorval = htobe16(0xE963);
uint16_t xorval = htobe16(0xE963);
Line 160:
Line 160:
uint16_t * cipher = (uint16_t *) voidcipher;
uint16_t * cipher = (uint16_t *) voidcipher;
uint16_t * plain = (uint16_t *) voidplain;
uint16_t * plain = (uint16_t *) voidplain;
− size_t halfCount = size / sizeof(uint16_t);
+ size_t halfCount = size >> 1; // Divide by 2 rounding towards zero
− uint16_t xorval = htobe16(0xE963);
− size_t i;
− plain[0] = cipher[0] ^ htobe16(0xE963);
+ for (i = 0; i < halfCount; i++) {
+ uint16_t word = plain[i];
+ cipher[i] = xorval ^ word;
+ xorval = word;
}
}
}</nowiki>
}</nowiki>