Ejemplos de _crypto_sign_ed25519_ref10_hinit en C++ (Cpp)

Ejemplo n.º 1

Archivo: sign.c Proyecto: Asunaya/RefinedGunz

int
_crypto_sign_ed25519_detached(unsigned char *sig, unsigned long long *siglen_p,
                              const unsigned char *m, unsigned long long mlen,
                              const unsigned char *sk, int prehashed)
{
    crypto_hash_sha512_state hs;
    unsigned char            az[64];
    unsigned char            nonce[64];
    unsigned char            hram[64];
    ge_p3                    R;

    _crypto_sign_ed25519_ref10_hinit(&hs, prehashed);

#ifdef ED25519_NONDETERMINISTIC
    memcpy(az, sk, 32);
    _crypto_sign_ed25519_synthetic_r_hv(&hs, nonce, az);
#else
    crypto_hash_sha512(az, sk, 32);
    crypto_hash_sha512_update(&hs, az + 32, 32);
#endif

    crypto_hash_sha512_update(&hs, m, mlen);
    crypto_hash_sha512_final(&hs, nonce);

    memmove(sig + 32, sk + 32, 32);

    sc_reduce(nonce);
    ge_scalarmult_base(&R, nonce);
    ge_p3_tobytes(sig, &R);

    _crypto_sign_ed25519_ref10_hinit(&hs, prehashed);
    crypto_hash_sha512_update(&hs, sig, 64);
    crypto_hash_sha512_update(&hs, m, mlen);
    crypto_hash_sha512_final(&hs, hram);

    sc_reduce(hram);
    _crypto_sign_ed25519_clamp(az);
    sc_muladd(sig + 32, hram, az, nonce);

    sodium_memzero(az, sizeof az);
    sodium_memzero(nonce, sizeof nonce);

    if (siglen_p != NULL) {
        *siglen_p = 64U;
    }
    return 0;
}

Ejemplo n.º 2

Archivo: sign.c Proyecto: chengang9527/BankexWalletIOS

int
_crypto_sign_ed25519_detached(unsigned char *sig, unsigned long long *siglen_p,
                              const unsigned char *m, unsigned long long mlen,
                              const unsigned char *sk, int prehashed)
{
    crypto_hash_sha512_state hs;
    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_sign_ed25519_ref10_hinit(&hs, prehashed);
    crypto_hash_sha512_update(&hs, az + 32, 32);
    crypto_hash_sha512_update(&hs, m, mlen);
    crypto_hash_sha512_final(&hs, nonce);

    memmove(sig + 32, sk + 32, 32);

    sc_reduce(nonce);
    ge_scalarmult_base(&R, nonce);
    ge_p3_tobytes(sig, &R);

    _crypto_sign_ed25519_ref10_hinit(&hs, prehashed);
    crypto_hash_sha512_update(&hs, sig, 64);
    crypto_hash_sha512_update(&hs, m, mlen);
    crypto_hash_sha512_final(&hs, hram);

    sc_reduce(hram);
    sc_muladd(sig + 32, hram, az, nonce);

    sodium_memzero(az, sizeof az);

    if (siglen_p != NULL) {
        *siglen_p = 64U;
    }
    return 0;
}