PHP Manual: openssl_private

Description

function openssl_private_encrypt(
    #[\SensitiveParameter] string $data,
    string &$encrypted_data,
    #[\SensitiveParameter] OpenSSLAsymmetricKey|OpenSSLCertificate|array|string $private_key,
    int $padding = OPENSSL_PKCS1_PADDING
): bool

openssl_private_encrypt() encrypts data with private private_key and stores the result into encrypted_data. 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.

Parameters

data
encrypted_data
private_key: private_key must be the private key that corresponds to the public key that will be used to decrypt the data.
padding: padding can be one of OPENSSL_PKCS1_PADDING, OPENSSL_NO_PADDING.

Return Values

Returns true on success or false on failure.

Changelog

Version	Description
8.0.0	`private_key` accepts an OpenSSLAsymmetricKey or OpenSSLCertificate instance now; previously, a resource of type `OpenSSL key` or `OpenSSL X.509` was accepted.

openssl_private_encrypt

Description

Parameters

Return Values

Changelog

See Also