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PKCS7_decrypt.pod
=pod =head1 NAME PKCS7_decrypt - decrypt content from a PKCS#7 envelopedData structure =head1 SYNOPSIS #include <openssl/pkcs7.h> int PKCS7_decrypt(PKCS7 *p7, EVP_PKEY *pkey, X509 *cert, BIO *data, int flags); =head1 DESCRIPTION PKCS7_decrypt() extracts and decrypts the content from a PKCS#7 envelopedData structure. B<pkey> is the private key of the recipient, B<cert> is the recipients certificate, B<data> is a BIO to write the content to and B<flags> is an optional set of flags. =head1 NOTES Although the recipients certificate is not needed to decrypt the data it is needed to locate the appropriate (of possible several) recipients in the PKCS#7 structure. The following flags can be passed in the B<flags> parameter. If the B<PKCS7_TEXT> flag is set MIME headers for type B<text/plain> are deleted from the content. If the content is not of type B<text/plain> then an error is returned. =head1 RETURN VALUES PKCS7_decrypt() returns either 1 for success or 0 for failure. The error can be obtained from ERR_get_error(3) =head1 BUGS PKCS7_decrypt() must be passed the correct recipient key and certificate. It would be better if it could look up the correct key and certificate from a database. The lack of single pass processing and need to hold all data in memory as mentioned in PKCS7_sign() also applies to PKCS7_verify(). =head1 SEE ALSO L<ERR_get_error(3)>, L<PKCS7_encrypt(3)> =head1 COPYRIGHT Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved. Licensed under the OpenSSL license (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