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# openssl_pkcs7_decrypt

(PHP 4 >= 4.0.6)

openssl_pkcs7_decrypt -- Decrypts an S/MIME encrypted message

## Description

bool openssl_pkcs7_decrypt ( string infilename, string outfilename, mixed recipcert, mixed recipkey)

Warning
This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.

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 "decrypted!";
    else
        echo "failed to decrypt!";

> Note: This function was added in 4.0.6.

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