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P5-crypt-tea_js
Jul 20, 2023
Next gen Tiny Encryption Algorithm in Perl and Javascript
This module implements TEA, the Tiny Encryption Algorithm, and some Modes of Use, in Perl and JavaScript.
The $key is a sufficiently longish string; at least 17 random 8-bit bytes for single encryption.
CryptTea_JS can be used for secret-key encryption in general, or, in particular, to communicate securely between browser and web-host. In this case, the simplest arrangement is for the user to enter the key into a JavaScript variable, and for the host to retrieve that user’s key from a database. Or, for extra security, the first message or even each message between browser and host could contain a random challenge-string, which each end would then turn into a signature, and use that signature as the encryption-key for the session or the reply.
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