I think this is a form of symmetric encryption where the passphrase (e.g. "ICE") is repeated (e.g. "ICEICEICEICEI...") until it matches the length of the cleartext string; after that, the two byte-strings are XOR'd against one another and then encoded as hexadecimal creating the ciphertext. Change-Id: Ib148f06d6c42a41377d1df1f0738d77da935a9f6 Reviewed-on: https://cl.tvl.fyi/c/depot/+/4789 Tested-by: BuildkiteCI Reviewed-by: wpcarro <wpcarro@gmail.com> Autosubmit: wpcarro <wpcarro@gmail.com> |
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cryptopals
My solutions for some of the questions at https://cryptopals.com.