Encryption: TCB (Tweaked CodeBook) algorithm - what is it?

Question

Can someone explain the description of the TCB algorithm?

Answer 1

My cryptographic skills are a bit rusty - but IMHO, Tweaked Codebook = Tweakable Block Cipher .

Basically an ECB with Tweak, which “fixes” the Disadvantages of big ECB errors : identical blocks with clear text lead to identical ciphertext (exposing your ciphertext to malicious replacement and display of data patterns).

With open text message P, cut n-bit blocks X1, X2, X3 ... Xi ... Xn

• Xi (XOR) Tweak (i) → CC
• Encrypt_function (CC) → Ci

Tweak ( ). (?) :

• Tweak (i) = i

100% ; , , , , , IEEE 1619-2007. !