const golang.org/x/sys/unix.KEYCTL_PKEY_SIGN

one use

	golang.org/x/sys/unix (current package)
		zerrors_linux.go#L1772: 	KEYCTL_PKEY_SIGN                            = 0x1b

The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)