我写了一个
swift应用程序,我需要AES加密和解密功能,我从另一个.Net解决方案收到加密数据,但我找不到要做的事情.
这是我的.net加密：
public static byte[] AES_Encrypt(byte[] bytesToBeEncrypted,byte[] passwordBytes)
{
byte[] encryptedBytes = null;
byte[] saltBytes = new byte[] { 1,2,3,4,5,6,7,8 };
using (MemoryStream ms = new MemoryStream())
{
using (RijndaelManaged AES = new RijndaelManaged())
{
AES.KeySize = 256;
AES.BlockSize = 128;
var key = new Rfc2898DeriveBytes(passwordBytes,saltBytes,1000);
AES.Key = key.GetBytes(AES.KeySize / 8);
AES.IV = key.GetBytes(AES.BlockSize / 8);
AES.Mode = CipherMode.CBC;
using (var cs = new CryptoStream(ms,AES.CreateEncryptor(),CryptoStreamMode.Write))
{
cs.Write(bytesToBeEncrypted,bytesToBeEncrypted.Length);
cs.Close();
}
encryptedBytes = ms.ToArray();
}
}
return encryptedBytes;
}
我需要在swift中解密功能.
解决方法
CryptoSwift
Example
更新到Swift 2
import Foundation
import CryptoSwift
extension String {
func aesEncrypt(key: String,iv: String) throws -> String{
let data = self.dataUsingEncoding(NSUTF8StringEncoding)
let enc = try AES(key: key,iv: iv,blockMode:.CBC).encrypt(data!.arrayOfBytes(),padding: PKCS7())
let encData = NSData(bytes: enc,length: Int(enc.count))
let base64String: String = encData.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0));
let result = String(base64String)
return result
}
func aesDecrypt(key: String,iv: String) throws -> String {
let data = NSData(base64EncodedString: self,options: NSDataBase64DecodingOptions(rawValue: 0))
let dec = try AES(key: key,blockMode:.CBC).decrypt(data!.arrayOfBytes(),padding: PKCS7())
let decData = NSData(bytes: dec,length: Int(dec.count))
let result = NSString(data: decData,encoding: NSUTF8StringEncoding)
return String(result!)
}
}
用法：
let key = "bbC2H19lkVbQDfakxcrtNMQdd0FloLyw" // length == 32
let iv = "gqLOHUioQ0QjhuvI" // length == 16
let s = "string to encrypt"
let enc = try! s.aesEncrypt(key,iv: iv)
let dec = try! enc.aesDecrypt(key,iv: iv)
print(s) // string to encrypt
print("enc:\(enc)") // 2r0+KirTTegQfF4wI8rws0LuV8h82rHyyYz7xBpXIpM=
print("dec:\(dec)") // string to encrypt
print("\(s == dec)") // true
确保你有正确的长度iv(16)和键(32),那么你不会打“块大小和初始化矢量必须是相同的长度！错误.
