Interface to low level AES encryption features.
This class provides access to AES encryption/decryption of raw data. Both AES-ECB and AES-CBC mode are supported. [codeblock] extends Node

var aes = AESContext.new()

func _ready(): var key = "My secret key!!!" # Key must be either 16 or 32 bytes. var data = "My secret text!!" # Data size must be multiple of 16 bytes, apply padding if needed. # Encrypt ECB aes.start(AESContext.MODE_ECB_ENCRYPT, key.to_utf8()) var encrypted = aes.update(data.to_utf8()) aes.finish() # Decrypt ECB aes.start(AESContext.MODE_ECB_DECRYPT, key.to_utf8()) var decrypted = aes.update(encrypted) aes.finish() # Check ECB assert(decrypted == data.to_utf8())

var iv = "My secret iv!!!!" # IV must be of exactly 16 bytes. # Encrypt CBC aes.start(AESContext.MODE_CBC_ENCRYPT, key.to_utf8(), iv.to_utf8()) encrypted = aes.update(data.to_utf8()) aes.finish() # Decrypt CBC aes.start(AESContext.MODE_CBC_DECRYPT, key.to_utf8(), iv.to_utf8()) decrypted = aes.update(encrypted) aes.finish() # Check CBC assert(decrypted == data.to_utf8()) [/codeblock]
Close this AES context so it can be started again. See [method start].
Get the current IV state for this context (IV gets updated when calling [method update]). You normally don't need this function. [b]Note:[/b] This function only makes sense when the context is started with [constant MODE_CBC_ENCRYPT] or [constant MODE_CBC_DECRYPT].
Start the AES context in the given [code]mode[/code]. A [code]key[/code] of either 16 or 32 bytes must always be provided, while an [code]iv[/code] (initialization vector) of exactly 16 bytes, is only needed when [code]mode[/code] is either [constant MODE_CBC_ENCRYPT] or [constant MODE_CBC_DECRYPT].
Run the desired operation for this AES context. Will return a [PoolByteArray] containing the result of encrypting (or decrypting) the given [code]src[/code]. See [method start] for mode of operation. [b]Note:[/b] The size of [code]src[/code] must be a multiple of 16. Apply some padding if needed.
AES electronic codebook encryption mode.
AES electronic codebook decryption mode.
AES cipher blocker chaining encryption mode.
AES cipher blocker chaining decryption mode.
Maximum value for the mode enum.