Playground that shows propertyLevel encryption for Blockstack (Byte option not included yet)

PropertyLevelEncryption.swift

import Cocoa

protocol Identifiable {
    var uuid: String { get set }
}

protocol Encryptable {
    var encrypted: Bool { get }
    
    func encrypt()
    func decrypt()
}

public class EncryptableProperty<T: LosslessStringConvertible>: Encryptable {
    var value: T
    var encryptedValue: String
    var encrypted: Bool
    
    init(value: T, encrypted: Bool) {
        self.value = value
        self.encrypted = encrypted
        self.encryptedValue = ""
    }
    
    func encrypt() {
        self.encryptedValue = value.description
    }
    
    func decrypt() {
        guard let convertedValue = T(self.encryptedValue) else {
            return
        }
        self.value = convertedValue
    }
}

protocol EncryptableObject {
    func encryptObject()
    func decryptObject()
}

struct Test: EncryptableObject, Identifiable {
    
    public let testString: EncryptableProperty<String>
    public let testInt: EncryptableProperty<Int>
    var uuid: String
    
    init(uuid: String = UUID().uuidString) {
        self.testString = EncryptableProperty<String>(value: "Blockstack", encrypted: true)
        self.testInt = EncryptableProperty<Int>(value: 5, encrypted: true)
        self.uuid = uuid
    }
    
    func encryptObject() {
        print("\nEncryption happens")
        Mirror(reflecting: self)
            .children
            .forEach { (property) in
                if let encryptableValue = property.value as? Encryptable {
                    encryptableValue.encrypt()
                }
        }
    }
    
    func decryptObject() {
        print("\nDecryption happens")
        Mirror(reflecting: self)
            .children
            .forEach { (property) in
                if let encryptableValue = property.value as? Encryptable {
                    encryptableValue.decrypt()
                }
        }
    }
}

let test = Test()

print("Value= \(test.testInt.value)    EncryptedValue= \(test.testInt.encryptedValue)")
test.encryptObject()
print("Value= \(test.testInt.value)    EncryptedValue= \(test.testInt.encryptedValue)")
print("\nDecrypted value gets updated")
test.testInt.encryptedValue = "6"
print("Value= \(test.testInt.value)    EncryptedValue= \(test.testInt.encryptedValue)")
test.decryptObject()
print("Value= \(test.testInt.value)    EncryptedValue= \(test.testInt.encryptedValue)")