Q1: Based on Hill cipher, if lower case and upper case letters are counted, in addition to number 0-9 (lower, upper, numbers). Decrypt the following cipher (1 2 3 text (if possible) if the following key used for encryption o15. Cipher ...
If we use the Hill cipher withm,26English letters and10decimal digits to encrypt plaintext "Engineer2"by using the key matrix [128856935] then the obtained cipher text is.(Note thatZ=25,0=26,1=27,2=28...Hint: Use modula...
If the matrix’s size is 3, you will cipher 3 characters at a time.For this puzzle, you have to find the cipher matrix (and its size) and how to decipher. Solve it My progress 0% The easiest way to find your friends Discover among your friends who has already solved this puzzle...
To enhance the security of the traditional Hill cipher (THC) and expand its application in medical image encryption, a novel dynamic Hill cipher with Arnold scrambling technique (DHCAST) is proposed in this work. Unlike the THC, the proposed DHCAST uses a time-varying matrix as its secret ...