openssl_sign
PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8
openssl_sign - Generate signature
Manual
openssl_sign(
string$data,
stringsignature ,
OpenSSLAsymmetricKey|OpenSSLCertificate|array|string$private_key,
[string|int$algorithm = OPENSSL_ALGO_SHA1]
): bool
string$data,
string
OpenSSLAsymmetricKey|OpenSSLCertificate|array|string$private_key,
[string|int$algorithm = OPENSSL_ALGO_SHA1]
): bool
openssl_sign computes a signature for the specified data by generating a cryptographic digital signature using the private key associated with private_key. Note that the data itself is not encrypted.
Parameters
- data
-
The string of data you wish to sign
- signature
-
If the call was successful the signature is returned in signature.
- private_key
-
OpenSSLAsymmetricKey - a key, returned by openssl_get_privatekey
string - a PEM formatted key
- algorithm
-
int - one of these Signature Algorithms.
string - a valid string returned by openssl_get_md_methods example, "sha256WithRSAEncryption" or "sha384".
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. |