74 lines
2.3 KiB
Swift
74 lines
2.3 KiB
Swift
//
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// File.swift
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//
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//
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// Created by Victor BODINAUD on 31/03/2021.
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//
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import Foundation
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class Transaction: Codable {
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let sender: String
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let receiver: String
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let amount: Int
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let type: String
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var signature: Data?
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var senderPublicKey: Data?
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init(sender: String, receiver: String, amount: Int, type: String) {
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self.sender = sender
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self.receiver = receiver
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self.amount = amount
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self.type = type
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}
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// Pour encoder/décoder les Data optionnels
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enum CodingKeys: String, CodingKey {
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case sender, receiver, amount, type, signature, senderPublicKey
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}
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// Données à signer
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func messageToSign() -> Data {
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return "\(sender)\(receiver)\(amount)\(type)".data(using: .utf8)!
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}
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required init(from decoder: Decoder) throws {
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let container = try decoder.container(keyedBy: CodingKeys.self)
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sender = try container.decode(String.self, forKey: .sender)
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receiver = try container.decode(String.self, forKey: .receiver)
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amount = try container.decode(Int.self, forKey: .amount)
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type = try container.decode(String.self, forKey: .type)
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signature = try container.decodeIfPresent(Data.self, forKey: .signature)
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senderPublicKey = try container.decodeIfPresent(Data.self, forKey: .senderPublicKey)
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}
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func encode(to encoder: Encoder) throws {
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var container = encoder.container(keyedBy: CodingKeys.self)
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try container.encode(sender, forKey: .sender)
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try container.encode(receiver, forKey: .receiver)
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try container.encode(amount, forKey: .amount)
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try container.encode(type, forKey: .type)
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try container.encodeIfPresent(signature, forKey: .signature)
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try container.encodeIfPresent(senderPublicKey, forKey: .senderPublicKey)
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}
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// Vérifier la validité de la signature
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func isSignatureValid() -> Bool {
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guard let signature = signature,
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let publicKeyData = senderPublicKey else {
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return false
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}
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// Pas besoin de vérifier la signature pour les récompenses de minage
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if type == "MINING_REWARD" {
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return true
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}
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return Wallet.verifySignature(
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for: self,
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signature: signature,
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publicKeyData: publicKeyData
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)
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}
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}
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