Visual FoxPro

AES Encryption ECB Mode with PKCS7 Padding

See more Encryption Examples

Duplicates the following C# code:

public static byte[] DecryptBySymmetricKey(string encryptedText, byte[] key)
  {
     string keyAsBase64 = Convert.ToBase64String(key);

     byte[] dataToDecrypt = Convert.FromBase64String(encryptedText);
     var keyBytes = key;
     AesManaged tdes = new AesManaged();
     tdes.KeySize = 256;
     tdes.BlockSize = 128;
     tdes.Key = keyBytes;
     tdes.Mode = CipherMode.ECB;
     tdes.Padding = PaddingMode.PKCS7;
     ICryptoTransform decrypt__1 = tdes.CreateDecryptor();
     byte[] deCipher = decrypt__1.TransformFinalBlock(dataToDecrypt, 0, dataToDecrypt.Length);
     tdes.Clear();
     string EK_result = Convert.ToBase64String(deCipher);
     return EK_result;
}

Visual FoxPro

LOCAL loCrypt
LOCAL lcKeyAsBase64
LOCAL lcEncryptedBytesAsBase64
LOCAL lcEK_result

* This example requires the Chilkat API to have been previously unlocked.
* See Global Unlock Sample for sample code.

loCrypt = CreateObject('Chilkat.Crypt2')

* In the C# code above that is to be duplicated here, use the base64 encoded key.
lcKeyAsBase64 = "..."
lcEncryptedBytesAsBase64 = "...."

loCrypt.KeyLength = 256
loCrypt.CryptAlgorithm = "AES"
loCrypt.CipherMode = "ecb"
loCrypt.PaddingScheme = 0
loCrypt.SetEncodedKey(lcKeyAsBase64,"base64")

loCrypt.EncodingMode = "base64"

* Pass the base64 representation of the encrypted data.
* (The EncodingMode indicates you are passing base64.)
lcEK_result = loCrypt.DecryptStringENC(lcEncryptedBytesAsBase64)

? lcEK_result

RELEASE loCrypt