INNER CODE UNIT · Go

signFile

andrearaponi/dito · cmd/plugin-signer/main.go:50

func signFile(filename string) error {
	data, err := os.ReadFile(filename)
	if err != nil {
		return fmt.Errorf("failed to read file: %w", err)
	}

	hash := sha256.Sum256(data)
	privateKey, err := os.ReadFile("ed25519_private.key")
	if err != nil {
		return fmt.Errorf("failed to read private key: %w", err)
	}

	signature := ed25519.Sign(privateKey, hash[:])
	if err := os.WriteFile(filename+".sig", []byte(hex.EncodeToString(signature)), 0644); err != nil {
		return fmt.Errorf("failed to save signature: %w", err)
	}

	fmt.Println("File signed successfully:", filename+".sig")

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