func Encrypt()

in image/image.go [682:716]

• 29 lines of code
• 7 McCabe index (conditional complexity)

func Encrypt(img Image, pubEncKey sec.PubEncKey) (Image, error) {
	dup := img.Clone()

	tlvp, err := dup.FindUniqueTlv(IMAGE_TLV_ENC_RSA)
	if err != nil {
		return dup, err
	}
	if tlvp != nil {
		return dup, errors.Errorf("image already contains an ENC_RSA TLV")
	}

	plainSecret, err := GeneratePlainSecret()
	if err != nil {
		return dup, err
	}

	cipherSecret, err := pubEncKey.Encrypt(plainSecret)
	if err != nil {
		return dup, err
	}

	body, err := sec.EncryptAES(dup.Body, plainSecret, nil)
	if err != nil {
		return dup, err
	}
	dup.Body = body

	tlv, err := GenerateEncTlv(cipherSecret)
	if err != nil {
		return dup, err
	}
	dup.Tlvs = append(dup.Tlvs, tlv)

	return dup, nil
}