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Read the paper of FIPS 197, which describes an implementation of the AES. Understand the Key Expansion algorithm shown in Figure 11. Paper link: https://nvlpubs.nist.gov/nistpubs/fips/nist.fips.197.pdf
Read the paper of FIPS 197, which describes an implementation of the AES. Understand the Key Expansion algorithm shown in Figure 11.
Paper link: https://nvlpubs.nist.gov/nistpubs/fips/nist.fips.197.pdf
When a cipher key is
2b7e151628aed2a6abf7158809cf3f3c
for Nk=4, which results in
w[0]=2b7e1516, w[1]=28aed2a6, w[2]=abf771588,w[3]=09cf4f3c
what will be w[4], w[5], w[6], w[7]?
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