AES XTS mode and java.security.InvalidKeyException: java.security.InvalidAlgorithmParameterException: Algorithm parameters required
2 years ago
Originally Published: 2007-09-17
Article Number
000053124
Applies To
RSA Key Manager Server

RSA Key Manager Client

Issue
Exception is thrown when trying to encrypt

com.rsa.kmc.KMException: java.security.InvalidKeyException: java.security.InvalidAlgorithmParameterException: Algorithm parameters required.

Cause
When creating a Key Class on the RKM Server and specifying the Cipher, if AES is selected for the Algorithm and 256 or 512 is selected for the Key Size, one of the choices for the Mode is XTS.  AES XTS mode is only used for the EMC PowerPath product and not supported by RKM Client.

Resolution
When creating a Key Class on the RKM Server, ensure that XTS mode is not specified unless the Key Class is going to be used by a product that supports it (such as EMC PowerPath).
Notes
For most applications, CBC mode should be used.  For more information about the block cipher modes, see the Security Concepts document that is included with RKM Client and RKM Server (doc\security_concepts.pdf) > Symmetric Key Cryptography > Block Ciphers > Modes of Operation.

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