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? The safety of the cryptography is based on several difficult mathematical problems. These problems won’t be solved in a long time, and that’s why they are called difficult problems. Cryptographythe Safety Guarantee ? Cryptanalysis sometimes can get the idea how the text is encrypted ,but never get the secret key in the encryption. ? The Hash Function is irreversible, which means it’s impossible to get back to the input through the output. Cryptographythe Safety Guarantee ? Act as the cryptanalysis to break the cryptography systems to find out whether the encryption is safe enough. ? Improve the safety of the cryptography system without increasing the plexity of the encryption algorithm. What we do Cryptographyreference .jsp?seq=2273boardid=1401 ? 靜夜四無鄰,荒居舊業(yè)貧。 , January 20, 2023 ? 雨中黃葉樹,燈下白頭人。 20:59:1620:59:162