1PKCS7_DECRYPT(3)                    OpenSSL                   PKCS7_DECRYPT(3)
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NAME

6       PKCS7_decrypt - decrypt content from a PKCS#7 envelopedData structure
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SYNOPSIS

9        #include <openssl/pkcs7.h>
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11        int PKCS7_decrypt(PKCS7 *p7, EVP_PKEY *pkey, X509 *cert, BIO *data, int flags);
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DESCRIPTION

14       PKCS7_decrypt() extracts and decrypts the content from a PKCS#7
15       envelopedData structure. pkey is the private key of the recipient, cert
16       is the recipients certificate, data is a BIO to write the content to
17       and flags is an optional set of flags.
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NOTES

20       Although the recipients certificate is not needed to decrypt the data
21       it is needed to locate the appropriate (of possible several) recipients
22       in the PKCS#7 structure.
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24       The following flags can be passed in the flags parameter.
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26       If the PKCS7_TEXT flag is set MIME headers for type text/plain are
27       deleted from the content. If the content is not of type text/plain then
28       an error is returned.
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RETURN VALUES

31       PKCS7_decrypt() returns either 1 for success or 0 for failure.  The
32       error can be obtained from ERR_get_error(3)
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BUGS

35       PKCS7_decrypt() must be passed the correct recipient key and
36       certificate. It would be better if it could look up the correct key and
37       certificate from a database.
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39       The lack of single pass processing and need to hold all data in memory
40       as mentioned in PKCS7_sign() also applies to PKCS7_verify().
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SEE ALSO

43       ERR_get_error(3), PKCS7_encrypt(3)
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46       Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
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48       Licensed under the OpenSSL license (the "License").  You may not use
49       this file except in compliance with the License.  You can obtain a copy
50       in the file LICENSE in the source distribution or at
51       <https://www.openssl.org/source/license.html>.
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551.1.1d                            2019-10-03                  PKCS7_DECRYPT(3)
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