Problem 44959. RSA encryption using public key
Encrypt the message text by converting to uint8 matrix using UTF-8 representation. Convert uint8 matrix to a large integer string. Use RSA encryption on the integer string given the public keys (n and e) and output the encrypted integer string. The public key (e) will always be fixed at 65537. No hashing or padding of the message is done.
For example:
message = 'I like to swim!';%given as input integer_String = '379695297047669462525290688599911713';%calculated n='418336393847020647250825879743341651032293545176800777981294580200903315345456262337972725306797613061';%given as input e= 65537;%fixed output_String = '158037161019988039882393476857386648994978438821991287680442802412825849535544067751541256843540494019';%output
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3 Comments
Sorry, but I don't understand your instruction to "convert the uint8 array to a long integer string". Could you be more specific?
Convert byte array into an integer/biginteger
A better answer to William (and for people that don't use Java) would be that after converting numbers to uint8, we must transform a vector into a single number using base 256. That means that a word like 'ball' becomes [98, 97, 108, 108] and then 98*256^3 + 97*256^2 + 108*256 + 108 = 1650551916.
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