(PHP 4 >= 4.0.6)
openssl_pkcs7_decrypt -- Decrypts an S/MIME encrypted message
( string infilename, string outfilename, mixed recipcert [, mixed recipkey])
Decrypts the S/MIME encrypted message contained in the file specified by infilename using the certificate and it's associated private key specified by recipcert and recipkey.
The decrypted message is output to the file specified by outfilename
Example 1. openssl_pkcs7_decrypt() example
// $cert and $key are assumed to contain your personal certificate and private
// key pair, and that you are the recipient of an S/MIME message
$infilename = "encrypted.msg"; // this file holds your encrypted message
$outfilename = "decrypted.msg"; // make sure you can write to this file
if (openssl_pkcs7_decrypt($infilename, $outfilename, $cert, $key))
echo "failed to decrypt!";
Note: This function was added in 4.0.6.