const github.com/refraction-networking/utls/dicttls.SigScheme_ecdsa_brainpoolP256r1tls13_sha256

one use

	github.com/refraction-networking/utls/dicttls (current package)
		signaturescheme.go#L38: 	SigScheme_ecdsa_brainpoolP256r1tls13_sha256 uint16 = 0x081A