Muldersoft/SlunkCrypt
Muldersoft/SlunkCrypt
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Small fix to rotation code.

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This commit is contained in:
LoRd_MuldeR 2021-04-01 00:36:04 +02:00
parent 26cfd32d24
commit 75b10acd6a
Signed by: mulder
GPG Key ID: 2B5913365F57E03F
1 changed files with 4 additions and 2 deletions
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6
libslunkcrypt/src/slunkcrypt.c
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@ -297,7 +297,8 @@ static FORCE_INLINE uint8_t process_encrypt(crypt_state_t* const crypt_state, ui
size_t i;
for (i = 0U; i < 256U; ++i)
{
value = crypt_state->wheel_fwd[i][(value + crypt_state->rotation_fwd[i]) & 0xFF];
const uint8_t rotation = crypt_state->rotation_fwd[i];
value = (crypt_state->wheel_fwd[i][(value + rotation) & 0xFF] - rotation) & 0xFF;
}
++crypt_state->rotation_fwd[crypt_state->step_fwd[crypt_state->counter]];
odometer_step(crypt_state->rotation_fwd, 0);
@ -310,7 +311,8 @@ static FORCE_INLINE uint8_t process_decrypt(crypt_state_t* const crypt_state, ui
size_t i;
for (i = 0U; i < 256U; ++i)
{
value = (crypt_state->wheel_bwd[i][value] - crypt_state->rotation_bwd[i]) & 0xFF;
const uint8_t rotation = crypt_state->rotation_bwd[i];
value = (crypt_state->wheel_bwd[i][(value + rotation) & 0xFF] - rotation) & 0xFF;
}
++crypt_state->rotation_bwd[crypt_state->step_bwd[crypt_state->counter]];
odometer_step(crypt_state->rotation_bwd, 1);