stbchen / rsa-encryption

RSA Public Key Cryptography

This program will perform RSA public key cryptography. This program can generate public and private keys, encrypt and decrypt using the public and private keys. RSA encryption uses various math concepts like large primes numbers and modulus.

This is a school project so no students of CSE 13s should be looking at this source code.

Building

Build the program with:

To build encrypt:

$ make encrypt

To build decrypt:

$ make decrypt

To build keygen:

$ make keygen

or

to build all:

$ make all

To format:

$ make format

To clean files:

$ make clean

Running

Run encrypt with (including command line options):

$ ./encrypt [-hv] [-i infile] [-o outfile] -n pubkey

Command line options for encrypt: -h Display program help and usage. -v Display verbose program output. -i infile Input file of data to encrypt (default: stdin). -o outfile Output file for encrypted data (default: stdout). -n pbfile Public key file (default: rsa.pub).

Run decrypt with (including command line options):

$ ./decrypt [-hv] [-i infile] [-o outfile] -n privkey

Command line options for decrypt: -h Display program help and usage. -v Display verbose program output. -i infile Input file of data to decrypt (default: stdin). -o outfile Output file for decrypted data (default: stdout). -n pvfile Private key file (default: rsa.priv).

Run keygen with (including command line options):

$ ./keygen [-hv] [-b bits] [-i confidence] [-n pbfile] [-d pvfile] -s seed

Command line options for keygen: -h Display program help and usage. -v Display verbose program output. -b bits Minimum bits needed for public key n. -i confidence Miller-Rabin iterations for testing primes (default: 50). -n pbfile Public key file (default: rsa.pub). -d pvfile Private key file (default: rsa.priv). -s seed Random seed for testing.