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Fix cw.tex
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Andre Henriques 2023-11-03 13:26:42 +00:00
parent 2b136b3966
commit 988a290b8d
1 changed files with 2 additions and 2 deletions
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cw/cw.tex
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@ -63,7 +63,7 @@
For if the block size is bigger than one we can say For if the block size is bigger than one we can say
$$H(m)=E(m)_{\text{Last Block}}$$ $$H(m)=E(m)_{\text{Last Block}}$$
$$E(m)=E(K, m)$$ $$E(m)=E(K, m)$$
$$\exists a,b,c,d : m = a||b \and m' = c||d$$ $$\exists a,b,c,d : m = a||b \land m' = c||d$$
where a,b,c,d are the size of one block where a,b,c,d are the size of one block
$$H(m)=E(b \oplus E(a \oplus IV)) = C_1$$ $$H(m)=E(b \oplus E(a \oplus IV)) = C_1$$
$$H(m')=E(d \oplus E(c \oplus IV)) = C_2$$ $$H(m')=E(d \oplus E(c \oplus IV)) = C_2$$
@ -72,7 +72,7 @@
with: with:
$$a \ne b \ne c \ne d$$ $$a \ne b \ne c \ne d$$
therefore therefore
$$H(m)=H(m') \and m\ne m'$$ $$H(m)=H(m') \land m\ne m'$$