openssl_private_encrypt

PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8
openssl_private_encrypt - Encrypts data with private key
Manual

openssl_private_encrypt(
     string$data,
     stringencrypted_data,
     OpenSSLAsymmetricKey|OpenSSLCertificate|array|string$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

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.

Related Functions

Function openssl_private_encrypt:

  • Manual

OpenSSL Functions

Most used PHP functions