Evidence Category · 9 Questions
Classical Cryptanalysis
Measures classical cipher analysis.
Questions in This Category
Q029Real flag after decoding the base64+XOR in CIPHER1.TXT?
Q030Single byte XOR key used in CIPHER1.TXT?
Q031Vigenere key of CIPHER2.TXT (via frequency analysis)?
Q032Hidden passphrase in the decrypted plaintext of CIPHER2.TXT?
Q033Content of the OTP_MSG.BIN file?
Q110Vigenere key length of CIPHER2.TXT?
Q111Which encoding wraps the CIPHER1.TXT challenge?
Q112Which cipher type protects OTP_MSG.BIN?
Q167Which language is the CIPHER2.TXT plaintext?