openssl_pkcs12_read
If you want to decrypt a received email, keep in mind that you need the full encrypted message including the mime header.
<?php
// Get the full message
$encrypted = imap_fetchmime($stream, $msg_number, "1", FT_UID);
$encrypted .= imap_fetchbody($stream, $msg_number, "1", FT_UID);
// Write the needed temporary files
$infile = tempnam("", "enc");
file_put_contents($infile, $encrypted);
$outfile = tempnam("", "dec");
// The certification stuff
$public = file_get_contents("/path/to/your/cert.pem");
$private = array(file_get_contents("/path/to/your/cert.pem"), "password");
// Ready? Go!
if(openssl_pkcs7_decrypt($infile, $outfile, $public, $private))
{
// Decryption successful
echo file_get_contents($outfile);
}
else
{
// Decryption failed
echo "Oh oh! Decryption failed!";
}
// Remove the temp files
@unlink($infile);
@unlink($outfile);
?>
openssl_pkcs7_decrypt
(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.
Parameters
-
infilename -
-
outfilename -
The decrypted message is written to the file specified by
outfilename. -
recipcert -
-
recipkey -
Return Values
Returns TRUE on success or FALSE on failure.
Examples
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!";
}
?>
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User Contributed Notes
openssl_pkcs7_decrypt - [1 notes]
oliver at anonsphere dot com ¶
2 years ago