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(PHP 4 >= 4.0.6, PHP 5)

openssl_pkcs7_decrypt -- Decrypts an S/MIME encrypted message

Description

bool openssl_pkcs7_decrypt ( 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 its 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

<?php
// $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 "decrypted!";
} else {
    echo "failed to decrypt!";
}
?>