5 PKCS7_decrypt - decrypt content from a PKCS#7 envelopedData structure
9 #include <openssl/pkcs7.h>
11 int PKCS7_decrypt(PKCS7 *p7, EVP_PKEY *pkey, X509 *cert, BIO *data, int flags);
15 PKCS7_decrypt() extracts and decrypts the content from a PKCS#7 envelopedData
16 structure. B<pkey> is the private key of the recipient, B<cert> is the
17 recipients certificate, B<data> is a BIO to write the content to and
18 B<flags> is an optional set of flags.
22 Although the recipients certificate is not needed to decrypt the data it is needed
23 to locate the appropriate (of possible several) recipients in the PKCS#7 structure.
25 The following flags can be passed in the B<flags> parameter.
27 If the B<PKCS7_TEXT> flag is set MIME headers for type B<text/plain> are deleted
28 from the content. If the content is not of type B<text/plain> then an error is
33 PKCS7_decrypt() returns either 1 for success or 0 for failure.
34 The error can be obtained from ERR_get_error(3)
38 PKCS7_decrypt() must be passed the correct recipient key and certificate. It would
39 be better if it could look up the correct key and certificate from a database.
41 The lack of single pass processing and need to hold all data in memory as
42 mentioned in PKCS7_sign() also applies to PKCS7_verify().
46 L<ERR_get_error(3)>, L<PKCS7_encrypt(3)>
50 Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
52 Licensed under the Apache License 2.0 (the "License"). You may not use
53 this file except in compliance with the License. You can obtain a copy
54 in the file LICENSE in the source distribution or at
55 L<https://www.openssl.org/source/license.html>.