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Matrix cryptography decryption question (vulnerabilities?)

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f33r
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Joined: 04 Nov 2009
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PostPosted: Thu Nov 05, 2009 1:56 am    Post subject: Matrix cryptography decryption question (vulnerabilities?) Reply with quote

Hey, this is what I've got:

Plaintext:
Code:
Hello thar


To turn them into vectors in R3:
Code:
HEL LOT HAR


Turning them into numbers, then into a matrix:
Code:
   7 4 11    11 14 19    7 0 17   

Code:
[7 4 11]
[11 14 19]
[7 0 17]


Then we multiply by a matrix in R3 (the key):
Code:
[ 1 4 6 ]
[3 2 2]
[5 0 1]


And get a resulting 3x3 matrix, which can be re-written:
Code:
[74 36 61]   
[148 72 113]   
[92 28 59]

Code:
 74 36 61 148 72 113 92 28 59


I'm wondering what kind of techniques to apply to solve this.
Thanks

Note: its hard to display matrices, I hope you guys get it.
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