## Example

`

     int openssl_verify ( string $data , string $signature , mixed $pub_key_id [, int $signature_alg = OPENSSL_ALGO_SHA1 ] )

`

## Description

openssl_verify() verifies that the signature is correct for the specified data using the public key associated with pub_key_id. This must be the public key corresponding to the private key used for signing.

## Return Values

Returns 1 if the signature is correct, 0 if it is incorrect, and -1 on error.