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path: root/challange_tls_sni.go
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package acme

import "errors"

var errZ = errors.New("invalid Z")

func SNIName(z string) (string, error) {
	if len(z) != 64 {
		return "", errZ
	}
	return z[0:32] + "." + z[32:64] + ".acme.invalid", nil
}