openssl_public_decrypt

(PHP 4 >= 4.0.6, PHP 5)

openssl_public_decrypt — Decrypts data with public key

bool openssl_public_decrypt ( string $data , string &$decrypted , mixed $key [, int $padding=OPENSSL_PKCS1_PADDING ] )

openssl_public_decrypt() decrypts data that was previous encrypted via openssl_private_encrypt() and stores the result into decrypted .

You can use this function e.g. to check if the message was written by the owner of the private key.

data
decrypted
key: key must be the public key corresponding that was used to encrypt the data.
padding: padding defaults to OPENSSL_PKCS1_PADDING, but can also be OPENSSL_NO_PADDING.

如果成功则返回 TRUE，失败则返回 FALSE。