文件名称:aes_inv_sbox
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- 上传时间：2012-11-16
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The inverse S-box is used in the decrypting function inv_cipher to revert the substitution
carried out via the S-box.
The corresponding AES-Matlab function declared in Line 1 of Listing 7 takes the Sbox
(s_box) as its input and generates the inverse S-box inv_s_box in a single loop
. The loop runs through all elements of the S-box, interprets the current
S-box element value as an index into the inverse S-box and inserts the values 0 . . . 255
at the appropriate places in the inverse S-box-The inverse S-box is used in the decrypting function inv_cipher to revert the substitution
carried out via the S-box.
The corresponding AES-Matlab function declared in Line 1 of Listing 7 takes the Sbox
(s_box) as its input and generates the inverse S-box inv_s_box in a single loop
. The loop runs through all elements of the S-box, interprets the current
S-box element value as an index into the inverse S-box and inserts the values 0 . . . 255
at the appropriate places in the inverse S-box
carried out via the S-box.
The corresponding AES-Matlab function declared in Line 1 of Listing 7 takes the Sbox
(s_box) as its input and generates the inverse S-box inv_s_box in a single loop
. The loop runs through all elements of the S-box, interprets the current
S-box element value as an index into the inverse S-box and inserts the values 0 . . . 255
at the appropriate places in the inverse S-box-The inverse S-box is used in the decrypting function inv_cipher to revert the substitution
carried out via the S-box.
The corresponding AES-Matlab function declared in Line 1 of Listing 7 takes the Sbox
(s_box) as its input and generates the inverse S-box inv_s_box in a single loop
. The loop runs through all elements of the S-box, interprets the current
S-box element value as an index into the inverse S-box and inserts the values 0 . . . 255
at the appropriate places in the inverse S-box
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