如何使用 Xcode 在 Swift 中对字符串进行 AES 128 加密并将其作为 POST 发送到服务器？
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How to do AES 128 encryption of a string in Swift using Xcode and send it as POST to the server?
提问by M J A
How to do AES 128 encryption of a string in Swift using Xcode and send it as POST to the server?... I am new to Xcode and am learning to encrypt the string data and want to send to HTTP server. It is a basic iOS app for sending Latitude and Longitude of the device.
如何使用 Xcode 在 Swift 中对字符串进行 AES 128 加密并将其作为 POST 发送到服务器？...我是 Xcode 的新手，正在学习加密字符串数据并想发送到 HTTP 服务器。它是一个基本的 iOS 应用程序，用于发送设备的纬度和经度。
回答by Au Ris
Based on examples from: https://github.com/krzyzanowskim/CryptoSwift
基于以下示例：https: //github.com/krzyzanowskim/CryptoSwift
To encrypt a string using CryptoSwift:
使用 CryptoSwift 加密字符串：
func encrypt(text: String) -> String? {
if let aes = try? AES(key: "passwordpassword", iv: "drowssapdrowssap"),
let encrypted = try? aes.encrypt(Array(text.utf8)) {
return encrypted.toHexString()
}
return nil
}
To decrypt:
解密：
func decrypt(hexString: String) -> String? {
if let aes = try? AES(key: "passwordpassword", iv: "drowssapdrowssap"),
let decrypted = try? aes.decrypt(Array<UInt8>(hex: hexString)) {
return String(data: Data(bytes: decrypted), encoding: .utf8)
}
return nil
}
To send the values to server look up: HTTP Request in Swift with POST methodor any one of the thousands of posts how to send data to server.
要将值发送到服务器查找： 使用 POST 方法的 Swift 中的 HTTP 请求或如何将数据发送到服务器的数千个帖子中的任何一个。
回答by Brandon
Add #import <CommonCrypto/CommonCryptor.h>to your Bridging Header then use the following:
添加#import <CommonCrypto/CommonCryptor.h>到您的桥接头，然后使用以下内容：
func encryptAES128(data: NSData, key: NSString, iv: NSString) -> NSData? {
let keyPtr = UnsafeMutablePointer<CChar>.allocate(capacity: Int(kCCKeySizeAES128) + 1)
defer {
keyPtr.deallocate(capacity: Int(kCCKeySizeAES128) + 1)
}
let ivPtr = iv.utf8String
bzero(keyPtr, 0)
key.getCString(keyPtr, maxLength: Int(kCCKeySizeAES128) + 1, encoding: String.Encoding.utf8.rawValue)
let bufferSize = data.length + kCCBlockSizeAES128
let buffer = UnsafeMutableRawPointer.allocate(bytes: bufferSize, alignedTo: MemoryLayout.alignment(ofValue: CChar.self))
var numBytesEncrypted = 0
let cryptStatus = CCCrypt(CCOperation(kCCEncrypt), CCAlgorithm(kCCAlgorithmAES128), CCOptions(kCCOptionPKCS7Padding), keyPtr, kCCKeySizeAES128, ivPtr, data.bytes, data.length, buffer, bufferSize, &numBytesEncrypted)
if cryptStatus == kCCSuccess {
return NSData(bytesNoCopy: buffer, length: numBytesEncrypted, freeWhenDone: true)
}
buffer.deallocate(bytes: bufferSize, alignedTo: MemoryLayout.alignment(ofValue: CChar.self))
return nil
}
To send it to the server, base64-encode the result, and send that. Then on the server side, base64-decode the result and decrypt it.
要将其发送到服务器，对结果进行 base64 编码，然后发送。然后在服务器端，对结果进行 base64 解码并解密。
