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(Xojo Plugin) AES Encryption

AES encryption. The Chilkat encryption component supports 128-bit, 192-bit, and 256-bit AES encryption in ECB (Electronic Cookbook), CBC (Cipher-Block Chaining), and other modes.

Chilkat Xojo Plugin Download

Xojo Plugin for Windows, Linux, Mac OS X, and ARM

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

Dim crypt As New Chilkat.Crypt2

// AES is also known as Rijndael.		
crypt.CryptAlgorithm = "aes"

// CipherMode may be "ecb", "cbc", "ofb", "cfb", "gcm", etc.
// Note: Check the online reference documentation to see the Chilkat versions
// when certain cipher modes were introduced.
crypt.CipherMode = "cbc"

// KeyLength may be 128, 192, 256
crypt.KeyLength = 256

// The padding scheme determines the contents of the bytes
// that are added to pad the result to a multiple of the
// encryption algorithm's block size.  AES has a block
// size of 16 bytes, so encrypted output is always
// a multiple of 16.
crypt.PaddingScheme = 0

// EncodingMode specifies the encoding of the output for
// encryption, and the input for decryption.
// It may be "hex", "url", "base64", or "quoted-printable".
crypt.EncodingMode = "hex"

// An initialization vector is required if using CBC mode.
// ECB mode does not use an IV.
// The length of the IV is equal to the algorithm's block size.
// It is NOT equal to the length of the key.
Dim ivHex As String
ivHex = "000102030405060708090A0B0C0D0E0F"
crypt.SetEncodedIV ivHex,"hex"

// The secret key must equal the size of the key.  For
// 256-bit encryption, the binary secret key is 32 bytes.
// For 128-bit encryption, the binary secret key is 16 bytes.
Dim keyHex As String
keyHex = "000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F"
crypt.SetEncodedKey keyHex,"hex"

// Encrypt a string...
// The input string is 44 ANSI characters (i.e. 44 bytes), so
// the output should be 48 bytes (a multiple of 16).
// Because the output is a hex string, it should
// be 96 characters long (2 chars per byte).
Dim encStr As String
encStr = crypt.EncryptStringENC("The quick brown fox jumps over the lazy dog.")
System.DebugLog(encStr)

// Now decrypt:
Dim decStr As String
decStr = crypt.DecryptStringENC(encStr)
System.DebugLog(decStr)

 

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