openssl_private_encrypt
(PHP 4 >= 4.0.6, PHP 5)
openssl_private_encrypt — Encrypts data with private key
說明
bool openssl_private_encrypt
( string $data
, string &$crypted
, mixed $key
[, int $padding
] )
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.
參數
- data
-
- crypted
-
- key
-
- padding
-
padding defaults to OPENSSL_PKCS1_PADDING, but can also be OPENSSL_NO_PADDING.
Return值
如果成功則回傳 TRUE，失敗則回傳 FALSE。