(PHP 4 >= 4.0.6, PHP 5)
openssl_private_encrypt — 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().
This function can be used e.g. to sign data (or its hash) to prove that it is not written by someone else.
padding defaults to OPENSSL_PKCS1_PADDING, but can also be OPENSSL_NO_PADDING.
Returns TRUE on success or FALSE on failure.