func generateV1SigTlvEc()

in image/v1.go [235:266]

• 27 lines of code
• 5 McCabe index (conditional complexity)

func generateV1SigTlvEc(key sec.PrivSignKey, hash []byte) (ImageTlv, error) {
	sig, err := GenerateSigEc(key, hash)
	if err != nil {
		return ImageTlv{}, err
	}

	sigLen := key.SigLen()
	if len(sig) > int(sigLen) {
		return ImageTlv{}, errors.Errorf("signature truncated")
	}

	b := &bytes.Buffer{}

	if _, err := b.Write(sig); err != nil {
		return ImageTlv{}, errors.Wrapf(err, "failed to append sig")
	}

	pad := make([]byte, int(sigLen)-len(sig))
	if _, err := b.Write(pad); err != nil {
		return ImageTlv{}, errors.Wrapf(err,
			"failed to serialize image trailer")
	}

	return ImageTlv{
		Header: ImageTlvHdr{
			Type: sigTlvTypeV1(key),
			Pad:  0,
			Len:  sigLen + uint16(len(pad)),
		},
		Data: b.Bytes(),
	}, nil
}