I would like to ask an expert to explain the meaning of the English letters in the table below.
Thread Content
I would like to ask an expert to explain the meaning of the English letters in the table below (the part underlined in red)：
This table is the S box of the encryption algorithm AES (Advanced Encryption Standard) commonly used in cryptography. The red line represents the nonlinear transformation results corresponding to the hexadecimal numbers 0-F. In the AES encryption process, after the input plaintext is grouped according to certain rules, the ciphertext is obtained through multiple rounds of linear and nonlinear transformations. The S box is a non-linear transformation in AES encryption, using the table just mentioned for search and replacement. Specifically, each input byte will be regarded as a 4-digit binary number, and then the 4-digit binary number will be converted into a number, and finally the search and replacement will be performed through this table. In other words, each element in this table represents a specific mapping relationship, and through the nonlinear transformation of the S box, the purpose of enhancing the AES encryption algorithm can be achieved. .
Can't we just ask Tianchen directly? I guess I got an inquiry by chance and wanted to quote a low price and grab an order without doing any work. These are commonly used terms for gaskets, and anyone who understands the product will know them at a glance.
Since you don't understand, don't interrupt. Please pay attention to quality.
This post was last edited by qugd on 2023-6-1 16:21 and it hits the nail on the head.
No asbestos, a brand of graphite.
This should be the description of the gasket, 20631 has written it.
Then you can't find an expert. Who would care about the material list now, especially the auxiliary material list? Find a newbie and he'll probably find it out for you soon.