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Matrix Encryptions?

July 22nd, 2008 · No Comments

At school we are working with matrices and looking around the net i found the formula for a 2×2 encryption

C1 = a * P1 + b * P2 (mod 29)
C2 = c * P1 + d * P2 (mod 29)

i need to know 2 things.

1. Why is the mod 29
2. What is the mod of a 3×3 matrix or how can i work the mod out?

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    Tags: Encryption


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