mirror of https://github.com/oxen-io/lokinet
49 lines
805 B
C
49 lines
805 B
C
#ifdef KAT
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#include <stdio.h>
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#endif
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#include <string.h>
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#include "params.h"
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#include "small.h"
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#include "rq.h"
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#include "crypto_hash_sha512.h"
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#include "crypto_kem.h"
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int crypto_kem_enc_avx2(
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unsigned char *cstr,
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unsigned char *k,
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const unsigned char *pk
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)
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{
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small r[768];
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modq h[768];
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modq c[768];
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unsigned char rstr[small_encode_len];
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unsigned char hash[64];
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small_random_weightw(r);
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#ifdef KAT
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{
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int i;
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printf("encrypt r:");
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for (i = 0;i < p;++i)
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if (r[i] == 1) printf(" +%d",i);
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else if (r[i] == -1) printf(" -%d",i);
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printf("\n");
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}
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#endif
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small_encode(rstr,r);
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crypto_hash_sha512(hash,rstr,sizeof rstr);
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rq_decode(h,pk);
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rq_mult(c,h,r);
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memcpy(k,hash + 32,32);
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memcpy(cstr,hash,32);
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rq_roundencode(cstr + 32,c);
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return 0;
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}
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