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Add eddsa from ref10 implementation (with some modifications).

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This commit is contained in:
EinMByte 2015-08-27 22:16:12 +02:00
parent 2fcc91a755
commit 93d60152d5
84 changed files with 5798 additions and 567 deletions
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34
core/crypto/ed25519/sign.cpp Normal file
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@ -0,0 +1,34 @@
#include <string.h>
#include "crypto_sign.h"
#include "crypto_hash_sha512.h"
#include "ge.h"
#include "sc.h"
int crypto_sign(
unsigned char *sig,
const unsigned char* m, unsigned long long mlen,
const unsigned char* sk, const unsigned char* pk
)
{
unsigned char az[64];
unsigned char nonce[64];
unsigned char hram[64];
ge_p3 R;
crypto_hash_sha512(az,sk,32);
az[0] &= 248;
az[31] &= 63;
az[31] |= 64;
crypto_hash_sha512_2(nonce, az + 32, 32, m, mlen);
sc_reduce(nonce);
ge_scalarmult_base(&R,nonce);
ge_p3_tobytes(sig,&R);
crypto_hash_sha512_3(hram, sig, 32, pk, 32, m, mlen);
sc_reduce(hram);
sc_muladd(sig + 32,hram,az,nonce);
return 0;
}