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I have some text that is in a file. I want to encrypt this file so that an end user can not read or write to this file, but the application can read it. There can be a stored secret in the application because it is being secured in another way.
What type of Encryption support these requirements?
I was thinking of AES. I do not know much about encryption, and was looking for a starting point. An algorithm or a framework suggestion would be great.
One last note, the code is in Java running on a Windows and Linux environment.
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RSA Security RSA is a public-key encryption algorithm and the standard for encrypting data sent over the internet. It also happens to be one of the methods used in PGP and GPG programs. Unlike Triple DES, RSA is considered an asymmetric algorithm due to its use of a pair of keys.
File encryption takes place through asymmetric or symmetric encryption. Some systems use both of them in a combination to strengthen security. Asymmetric encryption or public-key cryptography is a cryptographic system that employs two different keys: a public (or shared) key and a private (or secret) key.
Since you've tagged the post as "Java" - I'd recommend looking at the "Java Cryptography Extension" (JCE). Since J2SE 1.4 it's been bundled with the SDK and JRE.
And of course, a requisite example and overview of using AES in the JCE.
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