Swift Language AES encryption AES encryption in ECB mode with PKCS7 padding
Example
From Apple documentation for IV,
This parameter is ignored if ECB mode is used or if a stream cipher algorithm is selected.
func AESEncryption(key: String) -> String? {
let keyData: NSData! = (key as NSString).data(using: String.Encoding.utf8.rawValue) as NSData!
let data: NSData! = (self as NSString).data(using: String.Encoding.utf8.rawValue) as NSData!
let cryptData = NSMutableData(length: Int(data.length) + kCCBlockSizeAES128)!
let keyLength = size_t(kCCKeySizeAES128)
let operation: CCOperation = UInt32(kCCEncrypt)
let algoritm: CCAlgorithm = UInt32(kCCAlgorithmAES128)
let options: CCOptions = UInt32(kCCOptionECBMode + kCCOptionPKCS7Padding)
var numBytesEncrypted :size_t = 0
let cryptStatus = CCCrypt(operation,
algoritm,
options,
keyData.bytes, keyLength,
nil,
data.bytes, data.length,
cryptData.mutableBytes, cryptData.length,
&numBytesEncrypted)
if UInt32(cryptStatus) == UInt32(kCCSuccess) {
cryptData.length = Int(numBytesEncrypted)
var bytes = [UInt8](repeating: 0, count: cryptData.length)
cryptData.getBytes(&bytes, length: cryptData.length)
var hexString = ""
for byte in bytes {
hexString += String(format:"%02x", UInt8(byte))
}
return hexString
}
return nil
}
