Class Review / Codes For Fun
Due: January 15th 2013
THIS IS ONLY WORTH 30 POINTS. PLEASE DO NOT SUBMIT MORE THAN 2 QUESTIONS.
Send your completed assignments to: [email protected]
DO NOT SEND ATTACHMENTS. DO NOT SEND BEFORE DECEMBER 1ST - assignment subject to change up until that date.
The subject of your e-mail should have the following format: CC1 - CFF - HOL ID.
For example, for me this would read: CC1 - CFF - ma607.
If you require help / further hints as to where to go free to contact me (email/IRC/HOL message). This will not incur a points penalty, however obviously it will take me a bit of time to respond (ideally within a week) - please take this into account as you cannot get extensions on the final! :)
THIS IS ONLY WORTH 30 POINTS. PLEASE DO NOT SUBMIT MORE THAN 2 QUESTIONS.
Send your completed assignments to: [email protected]
DO NOT SEND ATTACHMENTS. DO NOT SEND BEFORE DECEMBER 1ST - assignment subject to change up until that date.
The subject of your e-mail should have the following format: CC1 - CFF - HOL ID.
For example, for me this would read: CC1 - CFF - ma607.
If you require help / further hints as to where to go free to contact me (email/IRC/HOL message). This will not incur a points penalty, however obviously it will take me a bit of time to respond (ideally within a week) - please take this into account as you cannot get extensions on the final! :)
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Q1. (15 points)
As this class involves actual brainpower I'm giving you some "easier" points here if you want them ;)
a) Overall how did you find this class?
b) Which was/were your favourite code(s)?
c) Which was/were your least favourite code(s)?
d) Did you have any problems with receiving points / accessing assignments / having queries answered?
e) Any suggestions for improvement?
Q2. (15 points)
Which code / kind of code (including steganographic methods) would you use for each of the following situations and why?
a) You're working undercover for the Ministry/a company and need to pass along sensitive information to your contacts.
b) You're either in hiding or have been kidnapped and want to leave a note/sign to someone that you were there, at this place (e.g. in an unused, forgotten classroom).
c) You're in charge of a secret club (kind of Dumbledore's Army style) and need to leave a message somewhere that everyone in the group can translate to find out when/where the next meeting is etc.
Q3. (15 points)
Encryption used: route cipher then Playfair cipher (keyword: CALEDONIAN).
DRFT BLUH LCBT IELT UADA NLQH
Q4. (15 points)
Encryption used: Vigenere cipher (keyword: CHILDISH) then columnar cipher (keyword: TACOS).
FPVIC WKDIE LQQWW YRNML
As this class involves actual brainpower I'm giving you some "easier" points here if you want them ;)
a) Overall how did you find this class?
b) Which was/were your favourite code(s)?
c) Which was/were your least favourite code(s)?
d) Did you have any problems with receiving points / accessing assignments / having queries answered?
e) Any suggestions for improvement?
Q2. (15 points)
Which code / kind of code (including steganographic methods) would you use for each of the following situations and why?
a) You're working undercover for the Ministry/a company and need to pass along sensitive information to your contacts.
b) You're either in hiding or have been kidnapped and want to leave a note/sign to someone that you were there, at this place (e.g. in an unused, forgotten classroom).
c) You're in charge of a secret club (kind of Dumbledore's Army style) and need to leave a message somewhere that everyone in the group can translate to find out when/where the next meeting is etc.
Q3. (15 points)
Encryption used: route cipher then Playfair cipher (keyword: CALEDONIAN).
DRFT BLUH LCBT IELT UADA NLQH
Q4. (15 points)
Encryption used: Vigenere cipher (keyword: CHILDISH) then columnar cipher (keyword: TACOS).
FPVIC WKDIE LQQWW YRNML