openssl_pkey_derive
PHP 7 >= 7.3.0, PHP 8
openssl_pkey_derive - Computes shared secret for public value of remote and local DH or ECDH key
Manual
openssl_pkey_derive(
OpenSSLAsymmetricKey|OpenSSLCertificate|array|string$public_key,
OpenSSLAsymmetricKey|OpenSSLCertificate|array|string$private_key,
[int$key_length = 0]
): string|false
OpenSSLAsymmetricKey|OpenSSLCertificate|array|string$public_key,
OpenSSLAsymmetricKey|OpenSSLCertificate|array|string$private_key,
[int$key_length = 0]
): string|false
openssl_pkey_derive takes a set of a public_key and private_key and derives a shared secret, for either DH or EC keys.
Parameters
- public_key
-
public_key is the public key for the derivation. See Public/Private Key parameters for a list of valid values.
- private_key
-
private_key is the private key for the derivation. See Public/Private Key parameters for a list of valid values.
- key_length
-
If not zero, will set the desired length of the derived secret.
Return Values
The derived secret on success or false on failure.