/*
 * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include <openssl/evp.h>
#include <openssl/provider.h>
#include <openssl/params.h>
#include <openssl/core_names.h>
#include "internal/nelem.h"
#include "crypto/evp.h"          /* For the internal API */
#include "testutil.h"

/* Array indexes used in test_fromdata_rsa */
#define N       0
#define E       1
#define D       2
#define P       3
#define Q       4
#define DP      5
#define DQ      6
#define QINV    7

static int test_fromdata_rsa(void)
{
    int ret = 0;
    EVP_PKEY_CTX *ctx = NULL;
    EVP_PKEY *pk = NULL;
    /*
     * 32-bit RSA key, extracted from this command,
     * executed with OpenSSL 1.0.2:
     *
     * openssl genrsa 32 | openssl rsa -text
     */
    static unsigned long key_numbers[] = {
        0xbc747fc5,              /* N */
        0x10001,                 /* E */
        0x7b133399,              /* D */
        0xe963,                  /* P */
        0xceb7,                  /* Q */
        0x8599,                  /* DP */
        0xbd87,                  /* DQ */
        0xcc3b,                  /* QINV */
    };
    OSSL_PARAM fromdata_params[] = {
        OSSL_PARAM_ulong(OSSL_PKEY_PARAM_RSA_N, &key_numbers[N]),
        OSSL_PARAM_ulong(OSSL_PKEY_PARAM_RSA_E, &key_numbers[E]),
        OSSL_PARAM_ulong(OSSL_PKEY_PARAM_RSA_D, &key_numbers[D]),
        OSSL_PARAM_ulong(OSSL_PKEY_PARAM_RSA_FACTOR, &key_numbers[P]),
        OSSL_PARAM_ulong(OSSL_PKEY_PARAM_RSA_FACTOR, &key_numbers[Q]),
        OSSL_PARAM_ulong(OSSL_PKEY_PARAM_RSA_EXPONENT, &key_numbers[DP]),
        OSSL_PARAM_ulong(OSSL_PKEY_PARAM_RSA_EXPONENT, &key_numbers[DQ]),
        OSSL_PARAM_ulong(OSSL_PKEY_PARAM_RSA_COEFFICIENT, &key_numbers[QINV]),
        OSSL_PARAM_END
    };

    if (!TEST_ptr(ctx = EVP_PKEY_CTX_new_provided(NULL, "RSA", NULL)))
        goto err;

    if (!TEST_true(EVP_PKEY_key_fromdata_init(ctx))
        || !TEST_true(EVP_PKEY_fromdata(ctx, &pk, fromdata_params)))
        goto err;

    /*
     * TODO(3.0) We can't do much more at this point without using internals,
     * because RSA functionality is still missing.  When the time comes, it
     * would be nice to try and do something "useful" with this key, such
     * as signing a small piece of data.
     */
    ret = 1;

 err:
    EVP_PKEY_free(pk);
    EVP_PKEY_CTX_free(ctx);

    return ret;
}

int setup_tests(void)
{
    ADD_TEST(test_fromdata_rsa);
    return 1;
}