在SWIFT中加密和解密
在SWIFT中搜索加密和解密代码。在SWIFT中加密和解密
但我在SWIFT中找不到解决方案。我需要通过密钥加密/解密MD5并转换为BASE64在ECB模式下!
我有这样的代码在C#:
public static string MD5Cripto(string texto, string chave)
{
try
{
TripleDESCryptoServiceProvider sObCripto
= new TripleDESCryptoServiceProvider();
MD5CryptoServiceProvider sObjcriptoMd5 = new MD5CryptoServiceProvider();
byte[] sByteHash, sByteBuff;
string sTempKey = chave;
sByteHash = sObjcriptoMd5.ComputeHash(ASCIIEncoding
.UTF8.GetBytes(sTempKey));
sObjcriptoMd5 = null;
sObCriptografaSenha.Key = sByteHash;
sObCriptografaSenha.Mode = CipherMode.ECB;
sByteBuff = ASCIIEncoding.UTF8.GetBytes(texto);
return Convert.ToBase64String(sObCripto.CreateEncryptor()
.TransformFinalBlock(sByteBuff, 0, sByteBuff.Length));
}
catch (Exception ex)
{
return "Digite os valores Corretamente." + ex.Message;
}
}
UPDATE:
我尝试这一点,但仍然没有工作。什么林做错了什么? (忽略我的打印..)
func myEncrypt(encryptData:String) -> NSData?
{
let myKeyData : NSData = ("mykey" as NSString)
.dataUsingEncoding(NSUTF8StringEncoding)!
let myKeyDataMD5 = "mykey".md5()
let sArrayByte = myKeyDataMD5.hexToByteArray()
let myRawData : NSData = encryptData.dataUsingEncoding(NSUTF8StringEncoding)!
let buffer_size:size_t = myRawData.length + kCCBlockSize3DES
let buffer = UnsafeMutablePointer<NSData>.alloc(buffer_size)
var num_bytes_encrypted : size_t = 0
let operation:CCOperation = UInt32(kCCEncrypt)
let algoritm:CCAlgorithm = UInt32(kCCAlgorithm3DES)
let options:CCOptions = UInt32(kCCOptionECBMode + kCCOptionPKCS7Padding)
let keyLength = size_t(kCCKeySize3DES)
let Crypto_status: CCCryptorStatus = CCCrypt(operation, algoritm,
options, sArrayByte, keyLength, nil,
myRawData.bytes, myRawData.length, buffer,
buffer_size, &num_bytes_encrypted)
if Int32(Crypto_status) == Int32(kCCSuccess)
{
let myResult: NSData = NSData(bytes: buffer, length: num_bytes_encrypted)
print("buffer")
let count = myResult.length/sizeof(UInt32)
var array = [UInt32](count: count, repeatedValue: 0)
myResult.getBytes(&array, length:count * sizeof(UInt32))
print(array)
free(buffer)
print("myResult")
print(myResult)
let resultNSString = NSString(data: myResult,
encoding: NSUnicodeStringEncoding)!
let resultString = resultNSString as String
print("resultString")
print(resultString)
let sBase64 = toBase64(String(resultString))
print("sBase64")
print(sBase64)
let data : NSData! = resultNSString
.dataUsingEncoding(NSUnicodeStringEncoding)
let count2 = data.length/sizeof(UInt32)
var array2 = [UInt32](count: count, repeatedValue: 0)
data.getBytes(&array2, length:count2 * sizeof(UInt32))
print("array2")
print(array2)
return myResult
}
else
{
free(buffer)
return nil
}
}
例问题代码更新。
不确定问题中的输出格式代码试图完成什么。
请注意,3DES使用24字节密钥(kCCKeySize3DES
为24),MD5提供16字节(CC_MD5_DIGEST_LENGTH
为16)结果,因此密钥长度不匹配。
func encrypt(dataString:String, keyString:String) -> NSData?
{
let keyData = md5(keyString)
let data : NSData = dataString.dataUsingEncoding(NSUTF8StringEncoding)!
var numBytesEncrypted : size_t = 0
var encryptedData: NSMutableData! = NSMutableData(length: Int(data.length) + kCCBlockSize3DES)
let encryptedPointer = UnsafeMutablePointer<UInt8>(encryptedData.mutableBytes)
let encryptedLength = size_t(encryptedData.length)
let operation:CCOperation = UInt32(kCCEncrypt)
let algoritm:CCAlgorithm = UInt32(kCCAlgorithm3DES)
let options:CCOptions = UInt32(kCCOptionECBMode + kCCOptionPKCS7Padding)
let keyLength = size_t(kCCKeySize3DES)
let status: CCCryptorStatus = CCCrypt(operation, algoritm, options,
keyData, keyLength,
nil,
data.bytes, data.length,
encryptedPointer, encryptedLength,
&numBytesEncrypted)
if Int32(status) == Int32(kCCSuccess) {
encryptedData.length = Int(numBytesEncrypted)
}
else {
encryptedData = nil
}
return encryptedData;
}
func md5(string: String) -> [UInt8] {
var digest = [UInt8](count: Int(CC_MD5_DIGEST_LENGTH), repeatedValue: 0)
if let data = string.dataUsingEncoding(NSUTF8StringEncoding) {
CC_MD5(data.bytes, CC_LONG(data.length), &digest)
}
return digest
}
测试:
let dataString = "Now is the time"
let keyString = "mykey"
let encryptedData = encrypt(dataString, keyString:keyString)
print("encryptedData: \(encryptedData!)")
let encryptedBase64 = encryptedData!.base64EncodedStringWithOptions(NSDataBase64EncodingOptions())
print("encryptedBase64: \(encryptedBase64)")
输出:
的EncryptedData:8d88a2bc 00beb021 f37917c3 75b0ba1a
encryptedBase64:jYiivAC + sCHzeRfDdbC6Gg ==
注:
不推荐使用3DES,ECB模式和MD5,不应在新代码中使用,而应该使用AES,CBC模式以及随机的iv和PBKDF2。
这个函数总是给出不同的数据,我怎么解密这个? –
@PiyushSanepara不清楚,用[mcve]问一个新问题并描述问题。 – zaph
请格式化您的代码,使其适合不滚动。 – zhon
MD5是一种(弱)散列算法,不是加密算法。 – zhon
我不能编辑没有松散的格式化代码!而且我知道散列很弱,但我需要用这种方式,该代码在C#,Android和VB6的其他版本的应用程序中使用。 –