Assignment 4 - HW (30 points) & EC (30 points)
Due: December 31st 2012
Send your completed assignments to: [email protected]
DO NOT SEND ATTACHMENTS. DO NOT SEND BEFORE NOVEMBER 1ST.
Please send the HW and EC in separate emails where possible. For HW you can pick any questions you would like. For EC please do 30 points more (only 60 points worth of work total will be graded). This means you do not have to do every question.
Please split the plaintext up into words instead of leaving it as a huge long string of letters.
The subject of your e-mail should have the following format: CC1 - HW4 - HOL ID (for homework) and CC1 - EC4 - HOL ID (for EC). For example, for me this would read: CC1 - HW4 - ma607 or CC1 - EC4 - ma607
If you require help / further hints as to where to go with the HW feel 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 when working out if you need an extension :)
Send your completed assignments to: [email protected]
DO NOT SEND ATTACHMENTS. DO NOT SEND BEFORE NOVEMBER 1ST.
Please send the HW and EC in separate emails where possible. For HW you can pick any questions you would like. For EC please do 30 points more (only 60 points worth of work total will be graded). This means you do not have to do every question.
Please split the plaintext up into words instead of leaving it as a huge long string of letters.
The subject of your e-mail should have the following format: CC1 - HW4 - HOL ID (for homework) and CC1 - EC4 - HOL ID (for EC). For example, for me this would read: CC1 - HW4 - ma607 or CC1 - EC4 - ma607
If you require help / further hints as to where to go with the HW feel 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 when working out if you need an extension :)
---------------------------------
Q1. (20 points)
Participate in the class forum post (LINK TBA). Decode the previous message and encode your own, you know the drill.
Ciphers/techniques to be used: Polybius square / Bacon's cipher.
Please include a link to your post in your e-mail if you choose this question :)
Q2. (20 points)
Participate in the class forum post (LINK TBA). Decode the previous message and encode your own, you know the drill.
Ciphers/techniques to be used : ROT-47 / Playfair cipher (state keyword)
Please include a link to your post in your e-mail if you choose this question :)
Q3. (10 points)
A grille can be used to find the plaintext message - what is it?
Participate in the class forum post (LINK TBA). Decode the previous message and encode your own, you know the drill.
Ciphers/techniques to be used: Polybius square / Bacon's cipher.
Please include a link to your post in your e-mail if you choose this question :)
Q2. (20 points)
Participate in the class forum post (LINK TBA). Decode the previous message and encode your own, you know the drill.
Ciphers/techniques to be used : ROT-47 / Playfair cipher (state keyword)
Please include a link to your post in your e-mail if you choose this question :)
Q3. (10 points)
A grille can be used to find the plaintext message - what is it?
For the following questions, the cipher used to encode the plaintext is not stated. Only ONE cipher/method was used for each question and they are all from Lesson 4. The format of the ciphertext should give away which cipher :)
Q4. (10 points)
Decode the following (keyword: THRONES)
HSERJTVSABVONHTSQTTGHILDERRTNHHNGEZY
Q5. (10 points)
Decode the following. (done)
SRNEPHGFQRRCREGUNAFJVBEQF
Q6. (10 points)
Decode the following.
aBcDEFgHIJKlmNOpQRsTUVwXYzABCDeFGHiJKLmNOpqRsTuVwxYzABCDefGHIJklM
Q7. (10 points)
Decode the following.
15 51 15 42 54 21 31 24 22 23 44 12 15 22 24 33 43 52 24 44 23 11 21 11 31 31
Q4. (10 points)
Decode the following (keyword: THRONES)
HSERJTVSABVONHTSQTTGHILDERRTNHHNGEZY
Q5. (10 points)
Decode the following. (done)
SRNEPHGFQRRCREGUNAFJVBEQF
Q6. (10 points)
Decode the following.
aBcDEFgHIJKlmNOpQRsTUVwXYzABCDeFGHiJKLmNOpqRsTuVwxYzABCDefGHIJklM
Q7. (10 points)
Decode the following.
15 51 15 42 54 21 31 24 22 23 44 12 15 22 24 33 43 52 24 44 23 11 21 11 31 31