const crypto/ed25519.SeedSize

5 uses

	crypto/ed25519 (current package)
		ed25519.go#L37: 	SeedSize = 32
		ed25519.go#L78: 	return append(make([]byte, 0, SeedSize), priv[:SeedSize]...)
		ed25519.go#L142: 	seed := make([]byte, SeedSize)

	crypto/x509
		pkcs8.go#L77: 		if l := len(curvePrivateKey); l != ed25519.SeedSize {