Waste less time on Facebook — follow Brilliant.
Back to all chapters
Cryptography
Whether for breaking codes in WWII, keeping your credit card info safe, or just cracking codes for fun, cryptography is a confluence of computer science and math that encrypts our most important data.
A certain message is encoded with a 2 letter key. The encrypted message is
1 | |
We also happen to know that the second character of the plain-text is "I". Break the cipher and find the answer.
The following message is encrypted(via the Vingenre cipher) with the key DAMNDANIEL
1 | |
Decipher the message to obtain the answer.
The string
1 | |
is encrypted with a key of unknown length. The resulting cipher text is
1 | |
What is the length of the key?