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/* (Modified by Tor to generate detached signatures.) */
#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, size_t mlen,
const unsigned char *sk,const unsigned char *pk
)
{
unsigned char nonce[64];
unsigned char hram[64];
ge_p3 R;
crypto_hash_sha512_2(nonce, sk+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,sk,nonce);
return 0;
}
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