mirror of
https://github.com/openssl/openssl.git
synced 2024-12-27 06:21:43 +08:00
25dd78048b
Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Paul Dale <pauli@openssl.org> Reviewed-by: David von Oheimb <david.von.oheimb@siemens.com> (Merged from https://github.com/openssl/openssl/pull/19222)
69 lines
2.4 KiB
Plaintext
69 lines
2.4 KiB
Plaintext
=pod
|
|
|
|
=head1 NAME
|
|
|
|
CMS_EncryptedData_decrypt, CMS_EnvelopedData_decrypt
|
|
- Decrypt CMS EncryptedData or EnvelopedData
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
#include <openssl/cms.h>
|
|
|
|
int CMS_EncryptedData_decrypt(CMS_ContentInfo *cms,
|
|
const unsigned char *key, size_t keylen,
|
|
BIO *dcont, BIO *out, unsigned int flags);
|
|
|
|
BIO *CMS_EnvelopedData_decrypt(CMS_EnvelopedData *env, BIO *detached_data,
|
|
EVP_PKEY *pkey, X509 *cert,
|
|
ASN1_OCTET_STRING *secret, unsigned int flags,
|
|
OSSL_LIB_CTX *libctx, const char *propq);
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
CMS_EncryptedData_decrypt() decrypts a I<cms> EncryptedData object using the
|
|
symmetric I<key> of size I<keylen> bytes. I<out> is a BIO to write the content
|
|
to and I<flags> is an optional set of flags.
|
|
I<dcont> is used in the rare case where the encrypted content is detached. It
|
|
will normally be set to NULL.
|
|
|
|
The following flags can be passed in the I<flags> parameter.
|
|
|
|
If the B<CMS_TEXT> flag is set MIME headers for type C<text/plain> are deleted
|
|
from the content. If the content is not of type C<text/plain> then an error is
|
|
returned.
|
|
|
|
CMS_EnvelopedData_decrypt() decrypts, similarly to CMS_decrypt(3),
|
|
a CMS EnvelopedData object I<env> using the symmetric key I<secret> if it
|
|
is not NULL, otherwise the private key of the recipient I<pkey>.
|
|
If I<pkey> is given, it is recommended to provide also the associated
|
|
certificate in I<cert> - see L<CMS_decrypt(3)> and the NOTES on I<cert> there.
|
|
The optional parameters I<flags> and I<dcont> are used as described above.
|
|
The optional parameters library context I<libctx> and property query I<propq>
|
|
are used when retrieving algorithms from providers.
|
|
|
|
=head1 RETURN VALUES
|
|
|
|
CMS_EncryptedData_decrypt() returns 0 if an error occurred otherwise returns 1.
|
|
|
|
CMS_EnvelopedData_decrypt() returns NULL if an error occurred,
|
|
otherwise a BIO containing the decypted content.
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<ERR_get_error(3)>, L<CMS_EncryptedData_encrypt(3)>, L<CMS_decrypt(3)>
|
|
|
|
=head1 HISTORY
|
|
|
|
CMS_EnvelopedData_decrypt() was added in OpenSSL 3.2.
|
|
|
|
=head1 COPYRIGHT
|
|
|
|
Copyright 2020 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
|
|
L<https://www.openssl.org/source/license.html>.
|
|
|
|
=cut
|