Tuesday, 2 October 2012

openssl private encrypt

bool openssl_private_encrypt ( string $data , string &$crypted , mixed $key [, int $padding = OPENSSL_PKCS1_PADDING ] )
Encrypts data with private key
openssl_private_encrypt() encrypts data with private key and stores the result into crypted. Encrypted data can be decrypted via openssl_public_decrypt().

Encrypt using private key, decrypt using public key.
Use this for posting signed messages: Anyone with access to your public key can read it, but they can't create one with your signature.

Example of openssl_private_encrypt

echo "Source: $source";
// $passphrase is required if your key is encoded (suggested)
$res = openssl_get_privatekey($priv_key,$passphrase);
 * NOTE:  Here you use the returned resource value
echo "String crypted: $crypttext";

$fp=fopen ("/path/to/certificate.crt","r");
 * NOTE:  Here you use the $pub_key value (converted, I guess)
echo "String decrypt : $newsource";