1. problem description The RSA cryptosystem can be specifically described as: take two large prime numbers P and Q, make n=pq, N= (p-1) (Q-1), select integer D randomly, and satisfy GCD (D, N) =1. Public key: k1= (n, e) Private key: k2= (P, Q, d) Encryption algorithm: for the encrypted message M, its corresponding ciphertext is c=E (m) =me (MODN) Decryption algorithm: D (c) =cd (MODN) 2. basic requirements P, Q, D, e parameters are selected reasonably, the program requires friendly interface and high degree of automation. 4. realization hints To implement a real RSA cryptosystem, the main consideration is to deal with large integers. P and Q are 1024 bits, and N takes 2048.

Filename	Size	Update
rsa\BigIntegeer.cpp	31362	2018-03-12
rsa\BigInteger.cpp	31328	2018-03-12
rsa\BigInteger.h	5348	2018-03-12
rsa\Debug\BigIntegeer.obj	280658	2018-03-12
rsa\Debug\main.obj	109454	2018-03-12
rsa\Debug\MdRSACrypto.obj	48256	2018-03-12
rsa\Debug\rsa.exe	639013	2018-03-12
rsa\Debug\rsa.ilk	853480	2018-03-12
rsa\Debug\rsa.pch	2685736	2018-03-12
rsa\Debug\rsa.pdb	1188864	2018-03-12
rsa\Debug\vc60.idb	91136	2018-03-12
rsa\Debug\vc60.pdb	110592	2018-03-12
rsa\main.cpp	940	2018-03-12
rsa\MdRSACrypto.cpp	3222	2018-03-12
rsa\MdRSACrypto.h	543	2018-03-12
rsa\rsa.dsp	4516	2018-03-12
rsa\rsa.dsw	529	2018-03-12
rsa\rsa.ncb	50176	2018-03-12
rsa\rsa.opt	49664	2018-03-12
rsa\rsa.plg	240	2018-03-12
rsa\Debug	0	2018-03-12
rsa	0	2018-03-12

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