openssl_pkcs7_decrypt Decrypts an S/MIME encrypted message &reftitle.description; boolopenssl_pkcs7_decrypt stringinfilename stringoutfilename mixedrecipcert mixedrecipkey Decrypts the S/MIME encrypted message contained in the file specified by infilename using the certificate and its associated private key specified by recipcert and recipkey. &reftitle.parameters; infilename outfilename The decrypted message is written to the file specified by outfilename. recipcert recipkey &reftitle.returnvalues; &return.success; &reftitle.examples; ]]>