NAME

       EVP_PKEY2PKCS8, EVP_PKCS82PKEY_ex, EVP_PKCS82PKEY - Convert a private key to/from PKCS8

SYNOPSIS

        #include <openssl/x509.h>

        PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(const EVP_PKEY *pkey);
        EVP_PKEY *EVP_PKCS82PKEY(const PKCS8_PRIV_KEY_INFO *p8);
        EVP_PKEY *EVP_PKCS82PKEY_ex(const PKCS8_PRIV_KEY_INFO *p8, OSSL_LIB_CTX *libctx,
                                    const char *propq);

DESCRIPTION

       EVP_PKEY2PKCS8() converts a private key pkey into a returned PKCS8 object.

       EVP_PKCS82PKEY_ex() converts a PKCS8 object p8 into a returned private key.  It uses
       libctx and propq when fetching algorithms.

       EVP_PKCS82PKEY() is similar to EVP_PKCS82PKEY_ex() but uses default values of NULL for the
       libctx and propq.

RETURN VALUES

       EVP_PKEY2PKCS8() returns a PKCS8 object on success.  EVP_PKCS82PKEY() and
       EVP_PKCS82PKEY_ex() return a private key on success.

       All functions return NULL if the operation fails.

SEE ALSO

       PKCS8_pkey_add1_attr(3),

COPYRIGHT

       Copyright 2020-2023 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>.