libressl-PKCS7_decrypt3
Decrypt content from a pkcs#7 envelopeddata structure
Usage
Crypto Library (libcrypto, -lcrypto)
#include <openssl/pkcs7.h>
int
PKCS7_decrypt(PKCS7 *p7, EVP_PKEY *pkey, X509 *cert, BIO *data, int flags);
Overview
PKCS7_decrypt() extracts and decrypts the content from a PKCS#7 envelopedData structure. pkey is the private key of the recipient, cert is the recipient's certificate, data is a BIO to write the content to and flags is an optional set of flags.
Although the recipient's certificate is not needed to decrypt the data, it is needed to locate the appropriate recipients in the PKCS#7 structure.
If the PKCS7_TEXT flag is set, MIME headers for type text/plain are deleted from the content. If the content is not of type text/plain, an error is returned.
Return values
PKCS7_decrypt() returns 1 for success or 0 for failure.
The error can be obtained from ERR_get_error(3).