return false
		}
		if len(data) < int(sigAndHashLen) {
			return false
		}
		numSigAlgos := sigAndHashLen / 2
		m.supportedSignatureAlgorithms = make([]SignatureScheme, numSigAlgos)
		for i := range m.supportedSignatureAlgorithms {
			m.supportedSignatureAlgorithms[i] = SignatureScheme(data[0])<<8 | SignatureScheme(data[1])
			data = data[2:]
		}
	}

	if len(data) < 2 {
		return false
	}

}

// supportedSignatureAlgorithms returns the supported signature algorithms.
func supportedSignatureAlgorithms() []SignatureScheme {
	if !needFIPS() {
		return defaultSupportedSignatureAlgorithms
	}
	return defaultSupportedSignatureAlgorithmsFIPS
}

func isSupportedSignatureAlgorithm(sigAlg SignatureScheme, supportedSignatureAlgorithms []SignatureScheme) bool {

		PrivateKey:  testRSAPrivateKey,
	}
	pkcs1Cert := &Certificate{
		Certificate:                  [][]byte{testRSACertificate},
		PrivateKey:                   testRSAPrivateKey,
		SupportedSignatureAlgorithms: []SignatureScheme{PKCS1WithSHA1, PKCS1WithSHA256},
	}
	ecdsaCert := &Certificate{
		// ECDSA P-256 certificate
		Certificate: [][]byte{testP256Certificate},
		PrivateKey:  testP256PrivateKey,
	}