Generating AES 256 bit key using seed
843811Nov 25 2008 — edited Nov 25 2008Hi
As part of encryption requirements for encrypting the body of the SOAP Message while calling an external Web Service, it is requried to encrypt using a shared symmetric key.
First step is to create a password digest
Base64(sha1(nonce + createdTimestamp + password)) - This step is working completely fine and produces a 160 bit Hash
The next step is to generate an AES 256 bit key using the above hash as the Seed. This should generate a 256 bit encrytpion key which can then be used to encrypt the message body.
Would appreciate if anyone who knows how to generate AES 256 bit key using a hash seed in Java (v1.4.2) can provide some guidance.
P:S. I am using WSS4J API to use WS-Security