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# openssl_private_encrypt

(PHP 4 >= 4.0.6, PHP 5)

openssl_private_encrypt -- Encrypts data with private key

## Description

bool openssl_private_encrypt ( string data, string &crypted, mixed key [, int padding] )

警告
這個函數是實驗性質的。這個函數的行為、名稱、和關於此函數的任何其他文件在未來PHP的發行中可能會在不通知的情況下改變。 使用此延伸需自行承擔風險。

openssl_private_encrypt() encrypts data with private key and stores the result into crypted. Encrypted data can be decrypted via openssl_public_decrypt(). padding defaults to `OPENSSL_PKCS1_PADDING`, but can also be `OPENSSL_NO_PADDING`.

成功回傳`TRUE`失敗回傳`FALSE`。

This function can be used e.g. to sign data (or its hash) to prove that it is not written by someone else.

See also openssl_public_decrypt() and openssl_public_encrypt().

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