Problem 44961. RSA decryption
Decrypt a large integer string using RSA decryption given the public key (n) and private key (d). Convert the large integer decryption into an output message string with UTF-8 representation.
Example:
encrypted_message = '158037161019988039882393476857386648994978438821991287680442802412825849535544067751541256843540494019';%input n='418336393847020647250825879743341651032293545176800777981294580200903315345456262337972725306797613061';%input d='8444986024072025211908427894173383040354675378319105204646840203847580180874615752845913488969020869';%input decrypted_message = 'I like to swim!';%output
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3 Comments
William
on 8 Sep 2019
David -- Good problem. I got sidetracked by the fact that the arguments 'd' and 'n' in the solution template are reversed from the order that they are provided in the test problems.
David Hill
on 8 Sep 2019
Sorry, I did not mean to do that. Fixed.
Rafael S.T. Vieira
on 23 Oct 2020
Similar to the first https://www.mathworks.com/matlabcentral/cody/problems/44959-rsa-encryption-using-public-key It is necessary to convert the number obtained back from base 256 to base 10.
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