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I'd suggest taking a look at Crypto++ (<a href="http://www.cryptopp.com/" rel="ugc">http://www.cryptopp.com/</a>) - it is a great library for all cryptographic purposes. I'm mostly using it for RSA at the moment, but also used it for AES, though that's a while ago.
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I'd suggest taking a look at Crypto++ (http://www.cryptopp.com/ [http://www.cryptopp.com/]) - it is a great library for all cryptographic purposes. I'm mostly using it for RSA at the moment, but also used it for AES, though that's a while ago.

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This library does not support key length longer than 256 bit. That does not meet my requirements.
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This library does not support key length longer than 256 bit. That does not meet my requirements.

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I am looking for any commercial or non-commercial encryption libraries that support AES with 512 bit key length. Is anyone aware of such libraries ? We need libraries as native Win32 DLLs as well as Java libraries.<br />
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Does anyone has experience in using AES with key length longer than 256 bit ?
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I am looking for any commercial or non-commercial encryption libraries that support AES with 512 bit key length. Is anyone aware of such libraries ? We need libraries as native Win32 DLLs as well as Java libraries.

Does anyone has experience in using AES with key length longer than 256 bit ?

AES 512 Bit Encryption Library

Security is the protection of information systems from theft or damage to the hardware, the software, and the information on them, as well as from disruption or misdirection of the services they provide. The main goal of security is protecting assets, and an asset is anything of value and worthy of protection.  Information Security is a discipline of protecting information assets from threats through safeguards to achieve the objectives of confidentiality, integrity, and availability or CIA for short. On the other hand, disclosure, alteration, and disruption (DAD) compromise the security objectives.

Security

Encryption is the process of encoding messages or information in such a way that only authorized parties can read it. In an encryption scheme, the intended communication information or message, referred to as plaintext, is encrypted using an encryption algorithm, generating ciphertext that can only be read if decrypted. For technical reasons, an encryption scheme usually uses a pseudo-random encryption key generated by an algorithm. An authorized recipient can easily decrypt the message with the key provided by the originator to recipients, but not to unauthorized interceptors.

Encryption

C++ is an intermediate-level general-purpose programming language, not to be confused with C or C#. It was developed as a set of extensions to the C programming language to improve type-safety and add support for automatic resource management, object-orientation, generic programming, and exception handling, among other features.