   #PHP Manual OpenSSL functions openssl_open openssl_pkcs7_encrypt

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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])

   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
   <?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!";
   }
   ?>

     Note: This function was added in 4.0.6.
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