1
1
mirror of https://github.com/henrydcase/pqc.git synced 2024-11-27 01:41:40 +00:00
pqcrypto/crypto_kem/sntrup761/clean/crypto_decode_761x3.c
John M. Schanck 431dbada45 Add sntrup{653,761,857} and ntrulpr{653,761,857}
Exported from SUPERCOP-20200826 using the scripts at:
https://github.com/jschanck/pqclean-package-ntruprime
2021-03-24 21:02:46 +00:00

25 lines
505 B
C

#include "crypto_decode_761x3.h"
#define uint8 uint8_t
#define p 761
void PQCLEAN_SNTRUP761_CLEAN_crypto_decode_761x3(void *v, const unsigned char *s) {
uint8 *f = v;
uint8 x;
int i;
for (i = 0; i < p / 4; ++i) {
x = *s++;
*f++ = ((uint8)(x & 3)) - 1;
x >>= 2;
*f++ = ((uint8)(x & 3)) - 1;
x >>= 2;
*f++ = ((uint8)(x & 3)) - 1;
x >>= 2;
*f++ = ((uint8)(x & 3)) - 1;
}
x = *s++;
*f++ = ((uint8)(x & 3)) - 1;
}