Div C – High School
NC Essential Standards Alignment:
Event Score Sheet:
National Event Page:
NC Only Event
Something to write with.
Teams will decode encrypted messages using cryptanalysis techniques, or show skill with advanced ciphers by encoding a message.
Teams must bring something to write with and may use one or more non-graphing, non-programmable 4-function calculators (or 5-function calculators), but not a scientific calculator.
High score wins.
This event allows up to 3 team members. Teams are allowed to divide and conquer the test.
The State event supervisor for Codebusters has set up a twitter handle to send out tips and tricks. @NCSO_cb
Important update from the Coaches institute. The K2 alphabet hint is actually a K1 alphabet hint. Everything described works the same, just the label is a K1 instead of K2. You can read on how to solve with a K1 alphabet at http://toebes.com/Ciphers/Solving%20a%20K1%20Alphabet.htm.
Previous tests can be found at http://toebes.com/Ciphers/index.html
Make your own codes:
Encode/Decode Tool: http://www.dcode.fr/hill-cipher