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    Home Unlabelled Cryptography A party game for nerdy cryptographers. Shamelessly based on Cards Against Humanity.

    Cryptography A party game for nerdy cryptographers. Shamelessly based on Cards Against Humanity.

    December 06, 2018

    Cryptography A party game for nerdy cryptographers. Shamelessly based on Cards Against Humanity.

    A party game for nerdy cryptographers. Shamelessly based on Cards Against Humanity.

    Posted: 05 Dec 2018 01:01 PM PST

    rsa encryption

    Posted: 05 Dec 2018 07:41 PM PST

    ​

    So I am learning encryption using RSA and I am having a bit of trouble understanding how to implement a few of the instructions. I am supposed to take a textfile, open it and interpret it as a base 70 integer using this alphabet = ".,?! \t\n\rabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789". I am then supposed to convert it to a base 10 integer using block sizes so that I do not exceed n. Once that is done I am then supposed to encode each block using the rules of RSA. My questions are how do I interpret the text as base 70 and then convert to base 10. And the last one is what are the rules of RSA?

    submitted by /u/wouldsmackurbooty
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    PyNaCl - "nacl.exceptions.CryptoError: An error occurred trying to decrypt the message"

    Posted: 05 Dec 2018 01:17 PM PST

    I'm looking for an implementation of a specific cipher

    Posted: 05 Dec 2018 02:51 AM PST

    The cipher is C2/Cryptomeria: https://en.wikipedia.org/wiki/Cryptomeria_cipher

    Now as far as I understand the values of the S-Box are secret and are under a license, however I'm going to fill it in with values of my own.

    I'd appreciate if anyone could direct me toward an implementation of that cipher, and possibly an implemented attack against it (unknown key, known S-BOX values)

    Thanks in advanced!

    submitted by /u/Richkiller
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