Talk:Finite field arithmetic
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Great minds think alike; I independently wrote almost the same material for Rijndael Galois field. Can you say merge? Samboy 10:59, 29 May 2005 (UTC)
Someone may observe that the material here bears a striking resemblence to some material on my web page. This is because I am allowing the relevant materal on that web page to be released under the GFDL license; there is no copyright violation going on. Keep in mind that I myself can place material form my web page in to articles; however if anyone else copies materials form my web page in to articles, it is a Copyvio. Samboy 20:24, 29 May 2005 (UTC)
[edit] wha?
- By making a logarithm table of the finite field, and performing subtraction in the table. Subtraction of logarithms is the same as division.
this sounds like a brute force attack by an other name, am I wrong?
[edit] Matrix Inversion Example
Can any one help me in finding the multiplicative inverse of 
in GF(24) step-by-step?
[edit] Small oops
I noticed a small oops in the text: > 0x1b corresponds to the irreducible polynomial x8 + x4 + x3 + x + 1.
0x1b is x^4 + x^3 + x + 1. 0x11b (as mentioned int he original Rijndael texts) is the actual polynomial. Since the bit you left off is the x^8 bit it's pointless to add it, but the text itself is still incorrect.
