func supportedSignatureAlgorithms() []SignatureScheme {
	if !needFIPS() {
		return defaultSupportedSignatureAlgorithms
	}
	return defaultSupportedSignatureAlgorithmsFIPS
}

func isSupportedSignatureAlgorithm(sigAlg SignatureScheme, supportedSignatureAlgorithms []SignatureScheme) bool {
	for _, s := range supportedSignatureAlgorithms {
		if s == sigAlg {
			return true
		}
	}
	return false
}