const crypto/tls.serverSignatureContext

3 uses

	crypto/tls (current package)
		auth.go#L64: 	serverSignatureContext = "TLS 1.3, server CertificateVerify\x00"
		handshake_client_tls13.go#L485: 	signed := signedMessage(sigHash, serverSignatureContext, hs.transcript)
		handshake_server_tls13.go#L617: 	signed := signedMessage(sigHash, serverSignatureContext, hs.transcript)