that the string does not appear // elsewhere in normal binaries, just as a precaution. const fipsMagic = " Go fipsinfo \xff\x00" var zeroSum [32]byte func init() { if !fips140.Enabled { return } if err := fips140.Supported(); err != nil { panic("fips140: " + err.Error()) } if Linkinfo.Magic[0] != 0xff || string(Linkinfo.Magic[1:]) != fipsMagic || Linkinfo.Sum == zeroSum { panic("fips140: no verification checksum found") } h := hmac.New(sha256.New, make([]byte, 32)) w := io.Writer(h) /* // Uncomment...