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se: fix infinite loop in shift_left_xor_rb (#21)

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Merry 2018-02-23 02:03:05 +00:00 committed by SciresM
parent 220e574ff7
commit a6c91ffe4e
1 changed files with 3 additions and 3 deletions
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6
exosphere/se.c
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@ -469,9 +469,9 @@ void se_aes_ecb_decrypt_block(unsigned int keyslot, void *dst, size_t dst_size,
void shift_left_xor_rb(uint8_t *key) {
uint8_t prev_high_bit = 0;
for (unsigned int i = 0xF; i >= 0; i--) {
uint8_t cur_byte = key[i];
key[i] = (cur_byte << 1) | (prev_high_bit);
for (unsigned int i = 0; i < 0x10; i++) {
uint8_t cur_byte = key[0xF - i];
key[0xF - i] = (cur_byte << 1) | (prev_high_bit);
prev_high_bit = cur_byte >> 7;
}
if (prev_high_bit) {