String encryption - suggestions asked

[yop]

Or do you want the operation to be reversible such that given the correct parameters, the original values can be retrieved?

This one

32 bytes?

This is enough

Take a look at stream ciphers and one-time pad algorithm. You can also use any block cipher in Cipher Feedback, Output Feedback or Counter mode.

OK I 'll start with wikipedia and move on... Are these available in any of the well known toolkits? (crypto++ or qca or ?)

haha, missed the 'NOT', my bad.

I have had the same problem so many times, but who's counting anyway (now that I think about it my Q&A does )

[jacek]

Are these available in any of the well known toolkits? (crypto++ or qca or ?)

No, but you can reuse some parts of those libraries to construct one.