path: root/crypto/rsa/rsa_lib.c

/*
 * Copyright 1995-2022 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
 */

/*
 * RSA low level APIs are deprecated for public use, but still ok for
 * internal use.
 */
#include "internal/deprecated.h"

#include <openssl/crypto.h>
#include <openssl/core_names.h>
#ifndef FIPS_MODULE
# include <openssl/engine.h>
#endif
#include <openssl/evp.h>
#include <openssl/param_build.h>
#include "internal/cryptlib.h"
#include "internal/refcount.h"
#include "crypto/bn.h"
#include "crypto/evp.h"
#include "crypto/rsa.h"
#include "crypto/security_bits.h"
#include "rsa_local.h"

static RSA *rsa_new_intern(ENGINE *engine, OSSL_LIB_CTX *libctx);

#ifndef FIPS_MODULE
RSA *RSA_new(void)
{
    return rsa_new_intern(NULL, NULL);
}

const RSA_METHOD *RSA_get_method(const RSA *rsa)
{
    return rsa->meth;
}

int RSA_set_method(RSA *rsa, const RSA_METHOD *meth)
{
    /*
     * NB: The caller is specifically setting a method, so it's not up to us
     * to deal with which ENGINE it comes from.
     */
    const RSA_METHOD *mtmp;
    mtmp = rsa->meth;
    if (mtmp->finish)
        mtmp->finish(rsa);
#ifndef OPENSSL_NO_ENGINE
    ENGINE_finish(rsa->engine);
    rsa->engine = NULL;
#endif
    rsa->meth = meth;
    if (meth->init)
        meth->init(rsa);
    return 1;
}

RSA *RSA_new_method(ENGINE *engine)
{
    return rsa_new_intern(engine, NULL);
}
#endif

RSA *ossl_rsa_new_with_ctx(OSSL_LIB_CTX *libctx)
{
    return rsa_new_intern(NULL, libctx);
}

static RSA *rsa_new_intern(ENGINE *engine, OSSL_LIB_CTX *libctx)
{
    RSA *ret = OPENSSL_zalloc(sizeof(*ret));

    if (ret == NULL) {
        ERR_raise(ERR_LIB_RSA, ERR_R_MALLOC_FAILURE);
        return NULL;
    }

    ret->references = 1;
    ret->lock = CRYPTO_THREAD_lock_new();
    if (ret->lock == NULL) <