AES Cipher Key Strength in BlackBerry -

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I need to create an application that decrypts encrypted data using a 512-bit key AES . What do I need to know that we can make length 512-bit AES key? Documentation says that we can make a key length of up to 256-bit. If that's the case, is there any way i can add my own implementation to the 512-bit AES key, or do I have to basically reduce the power used to encrypt the data?

Accept the keys of AES 128, 192 or 256 bits. If you hold a 512-bit key in the cipher then the cipher may not be AES.

In addition, if symmetric encryption is to use a 256-bit key then a real "power reduction" that comes with you is 512-bit key, it means that you know the physics Laws are in the habit of breaking. As a result, you are either a God, or something misleading.


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