/*
 * Created by victoria on 2021-05-13.
 */

#include "crypto.h"

extern "C" {
#include <openssl/rand.h>
}

#include "aes_openssl.h"
#include "hmac_sha256_openssl.h"
#include "sha512_digest_openssl.h"

int random_func(uint8_t *data, size_t len, void *) {
    if (RAND_bytes(data, len)) {
        return 0;
    } else {
        return SG_ERR_UNKNOWN;
    }
}

signal_crypto_provider Signal::Crypto::createProvider() {
    signal_crypto_provider result{};

    result.random_func = random_func;
    result.hmac_sha256_init_func = HmacSha256::init;
    result.hmac_sha256_update_func = HmacSha256::update;
    result.hmac_sha256_final_func = HmacSha256::final;
    result.hmac_sha256_cleanup_func = HmacSha256::cleanup;
    result.sha512_digest_init_func = Sha512::init;
    result.sha512_digest_update_func = Sha512::update;
    result.sha512_digest_final_func = Sha512::final;
    result.sha512_digest_cleanup_func = Sha512::cleanup;
    result.encrypt_func = Aes::encrypt;
    result.decrypt_func = Aes::decrypt;
    result.user_data = nullptr;

    return result;
}