2016 RC3 writeup -- Salad (Crypto 100)
The string provided was 7sj-ighm-742q3w4t and the description mentioned Caesar.
Also, we knew that the format of the flag is "RC3-2016-xxxxxxxx". Thus, we can easily conclude that "7sj-jghm" is the cipher text of "RC3-2016" using Caesar cipher.
R->7, C->s, 3->j
We found that the cipher text is generated by right shifting 16 alphabets and numbers.
plain: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F.....
cipher: g, h, i, j, k, l, m , n, o, p, q, r, s.......
flag: RC3-2016-ROMANGOD
Also, we knew that the format of the flag is "RC3-2016-xxxxxxxx". Thus, we can easily conclude that "7sj-jghm" is the cipher text of "RC3-2016" using Caesar cipher.
R->7, C->s, 3->j
We found that the cipher text is generated by right shifting 16 alphabets and numbers.
plain: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F.....
cipher: g, h, i, j, k, l, m , n, o, p, q, r, s.......
flag: RC3-2016-ROMANGOD
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