/**
* @param string $message
* @param string $signature
* @param string $signer_public
* @return bool
* @throws SignatureException
* @throws InvalidTypeException
*/
public static function verify($message, $signature, $signer_public)
{
# Test to make sure all the required variables are strings.
Helpers::isString($message, 'PublicKeyEncryption', 'verify');
Helpers::isString($signature, 'PublicKeyEncryption', 'verify');
Helpers::isString($signer_public, 'PublicKeyEncryption', 'verify');
# Decode the signature from hex
$signature = base64_decode(Helpers::hex2bin($signature));
# Decode the signer's public key from hex
$signer_public = Helpers::hex2bin($signer_public);
if (\Sodium\crypto_sign_verify_detached($signature, $message, $signer_public)) {
return true;
} else {
throw new SignatureException('Signature for message invalid.');
}
}
