On Feb 1, 2005, at 13:29, Andreas wrote:

I was wondering how can one tell if some data was successfully decrypted. Isn't there an assumption going on about what the cleartext data should be? Text? Image? ZIP file? Ziped jpeg? Another cyphertext? rot-13?

Embedded checksums or hash codes added before encryption. The types of those checks must not interact badly with the encryption.

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