mirror of https://github.com/openssl/openssl
126 lines
5.0 KiB
Plaintext
126 lines
5.0 KiB
Plaintext
=pod
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=head1 NAME
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PKCS12_create, PKCS12_create_ex, PKCS12_create_cb, PKCS12_create_ex2 - create a PKCS#12 structure
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=head1 SYNOPSIS
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#include <openssl/pkcs12.h>
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PKCS12 *PKCS12_create(const char *pass, const char *name, EVP_PKEY *pkey,
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X509 *cert, STACK_OF(X509) *ca,
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int nid_key, int nid_cert, int iter, int mac_iter, int keytype);
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PKCS12 *PKCS12_create_ex(const char *pass, const char *name, EVP_PKEY *pkey,
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X509 *cert, STACK_OF(X509) *ca, int nid_key, int nid_cert,
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int iter, int mac_iter, int keytype,
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OSSL_LIB_CTX *ctx, const char *propq);
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typedef int PKCS12_create_cb(PKCS12_SAFEBAG *bag, void *cbarg);
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PKCS12 *PKCS12_create_ex2(const char *pass, const char *name, EVP_PKEY *pkey,
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X509 *cert, STACK_OF(X509) *ca, int nid_key, int nid_cert,
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int iter, int mac_iter, int keytype,
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OSSL_LIB_CTX *ctx, const char *propq,
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PKCS12_create_cb *cb, void *cbarg);
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=head1 DESCRIPTION
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PKCS12_create() creates a PKCS#12 structure.
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I<pass> is the passphrase to use. I<name> is the B<friendlyName> to use for
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the supplied certificate and key. I<pkey> is the private key to include in
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the structure and I<cert> its corresponding certificates. I<ca>, if not B<NULL>
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is an optional set of certificates to also include in the structure.
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I<nid_key> and I<nid_cert> are the encryption algorithms that should be used
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for the key and certificate respectively. The modes
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GCM, CCM, XTS, and OCB are unsupported. I<iter> is the encryption algorithm
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iteration count to use and I<mac_iter> is the MAC iteration count to use.
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I<keytype> is the type of key.
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PKCS12_create_ex() is identical to PKCS12_create() but allows for a library context
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I<ctx> and property query I<propq> to be used to select algorithm implementations.
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PKCS12_create_ex2() is identical to PKCS12_create_ex() but allows for a user defined
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callback I<cb> of type B<PKCS12_create_cb> to be specified and also allows for an
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optional argument I<cbarg> to be passed back to the callback.
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The I<cb> if specified will be called for every safebag added to the
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PKCS12 structure and allows for optional application processing on the associated
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safebag. For example one such use could be to add attributes to the safebag.
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=head1 NOTES
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The parameters I<nid_key>, I<nid_cert>, I<iter>, I<mac_iter> and I<keytype>
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can all be set to zero and sensible defaults will be used.
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These defaults are: AES password based encryption (PBES2 with PBKDF2 and
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AES-256-CBC) for private keys and certificates, the PBKDF2 and MAC key
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derivation iteration count of B<PKCS12_DEFAULT_ITER> (currently 2048), and
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MAC algorithm HMAC with SHA2-256.
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The default MAC iteration count is 1 in order to retain compatibility with
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old software which did not interpret MAC iteration counts. If such compatibility
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is not required then I<mac_iter> should be set to PKCS12_DEFAULT_ITER.
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I<keytype> adds a flag to the store private key. This is a non standard extension
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that is only currently interpreted by MSIE. If set to zero the flag is omitted,
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if set to B<KEY_SIG> the key can be used for signing only, if set to B<KEY_EX>
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it can be used for signing and encryption. This option was useful for old
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export grade software which could use signing only keys of arbitrary size but
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had restrictions on the permissible sizes of keys which could be used for
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encryption.
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If a certificate contains an I<alias> or I<keyid> then this will be
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used for the corresponding B<friendlyName> or B<localKeyID> in the
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PKCS12 structure.
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Either I<pkey>, I<cert> or both can be B<NULL> to indicate that no key or
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certificate is required. In previous versions both had to be present or
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a fatal error is returned.
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I<nid_key> or I<nid_cert> can be set to -1 indicating that no encryption
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should be used.
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I<mac_iter> can be set to -1 and the MAC will then be omitted entirely.
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PKCS12_create() makes assumptions regarding the encoding of the given pass
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phrase.
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See L<passphrase-encoding(7)> for more information.
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If I<cb> is specified, then it should return 1 for success and -1 for a fatal error.
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A return of 0 is intended to mean to not add the bag after all.
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=head1 RETURN VALUES
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PKCS12_create() returns a valid B<PKCS12> structure or NULL if an error occurred.
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=head1 CONFORMING TO
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IETF RFC 7292 (L<https://tools.ietf.org/html/rfc7292>)
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=head1 SEE ALSO
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L<d2i_PKCS12(3)>,
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L<passphrase-encoding(7)>
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=head1 HISTORY
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PKCS12_create_ex() was added in OpenSSL 3.0.
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PKCS12_create_ex2() was added in OpenSSL 3.2.
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The defaults for encryption algorithms, MAC algorithm, and the MAC key
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derivation iteration count were changed in OpenSSL 3.0 to more modern
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standards.
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=head1 COPYRIGHT
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Copyright 2002-2021 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the Apache License 2.0 (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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