NAME

       PKCS12_create, PKCS12_create_ex - create a PKCS#12 structure

SYNOPSIS

        #include <openssl/pkcs12.h>

        PKCS12 *PKCS12_create(const char *pass, const char *name, EVP_PKEY *pkey,
                              X509 *cert, STACK_OF(X509) *ca,
                              int nid_key, int nid_cert, int iter, int mac_iter, int keytype);
        PKCS12 *PKCS12_create_ex(const char *pass, const char *name, EVP_PKEY *pkey,
                                 X509 *cert, STACK_OF(X509) *ca, int nid_key, int nid_cert,
                                 int iter, int mac_iter, int keytype,
                                 OSSL_LIB_CTX *ctx, const char *propq);

DESCRIPTION

       PKCS12_create() creates a PKCS#12 structure.

       pass is the passphrase to use. name is the friendlyName to use for the supplied
       certificate and key. pkey is the private key to include in the structure and cert its
       corresponding certificates. ca, if not NULL is an optional set of certificates to also
       include in the structure.

       nid_key and nid_cert are the encryption algorithms that should be used for the key and
       certificate respectively. The modes GCM, CCM, XTS, and OCB are unsupported. iter is the
       encryption algorithm iteration count to use and mac_iter is the MAC iteration count to
       use.  keytype is the type of key.

       PKCS12_create_ex() is identical to PKCS12_create() but allows for a library context ctx
       and property query propq to be used to select algorithm implementations.

NOTES

       The parameters nid_key, nid_cert, iter, mac_iter and keytype can all be set to zero and
       sensible defaults will be used.

       These defaults are: AES password based encryption (PBES2 with PBKDF2 and AES-256-CBC) for
       private keys and certificates, the PBKDF2 and MAC key derivation iteration count of
       PKCS12_DEFAULT_ITER (currently 2048), and MAC algorithm HMAC with SHA2-256.

       The default MAC iteration count is 1 in order to retain compatibility with old software
       which did not interpret MAC iteration counts. If such compatibility is not required then
       mac_iter should be set to PKCS12_DEFAULT_ITER.

       keytype adds a flag to the store private key. This is a non standard extension that is
       only currently interpreted by MSIE. If set to zero the flag is omitted, if set to KEY_SIG
       the key can be used for signing only, if set to KEY_EX it can be used for signing and
       encryption. This option was useful for old export grade software which could use signing
       only keys of arbitrary size but had restrictions on the permissible sizes of keys which
       could be used for encryption.

       If a certificate contains an alias or keyid then this will be used for the corresponding
       friendlyName or localKeyID in the PKCS12 structure.

       Either pkey, cert or both can be NULL to indicate that no key or certificate is required.
       In previous versions both had to be present or a fatal error is returned.

       nid_key or nid_cert can be set to -1 indicating that no encryption should be used.

       mac_iter can be set to -1 and the MAC will then be omitted entirely.

       PKCS12_create() makes assumptions regarding the encoding of the given pass phrase.  See
       passphrase-encoding(7) for more information.

RETURN VALUES

       PKCS12_create() returns a valid PKCS12 structure or NULL if an error occurred.

CONFORMING TO

       IETF RFC 7292 (<https://tools.ietf.org/html/rfc7292>)

SEE ALSO

       d2i_PKCS12(3), passphrase-encoding(7)

HISTORY

       PKCS12_create_ex() was added in OpenSSL 3.0.

       The defaults for encryption algorithms, MAC algorithm, and the MAC key derivation
       iteration count were changed in OpenSSL 3.0 to more modern standards.

COPYRIGHT

       Copyright 2002-2021 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>.