Requires Python 3
Usage:
$ ./rsa.py -h
Usage: rsa.py [options]
Simple command line program for RSA encryption
Options:
-h, --help show this help message and exit
-g, --generate-keys Generate public and private keys optionally specify
the size of p and q with --pqsize
-p PQSIZE, --pqsize=PQSIZE
Specify the size of p and q
-e MESSAGE_FILE, --encrypt=MESSAGE_FILE
encrypt message in file
-d CIPHER_FILE, --decrypt=CIPHER_FILE
decrpyt message
-f FILENAMES, --loadkey/s=FILENAMES
Load key files
# Generate
$ ./rsa.py -g -p 100
Generating keys
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SIZE OF r in bits 896
Size of d in bits 896
----------------------------
Generated keys!
Public key stored in key_rsa.pub
Private key stored in key_rsa. Keep this secret!
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# Encrypt
$ ./rsa.py -e plaintext.txt -f key_rsa.pub
Generated file cipher.json
# Decrypt
$ ./rsa.py -d cipher.json -f key_rsa.pub key_rsa
Decrypted message and written to file decrypted.txt
# Brute force guess private key
$ ./charlie.py -m key_rsa.pub
PUBLIC KEY:
{'e': 182563540195118449525715743066280327625184038035207222334715849889969642101507533546585753619751408730068734428211954001562239467439789039831639637057040548198771509522118711936150347935694740292498929420726697834713736136428873, 'n': 2195119608721297415877037512242786464996825673990629768938344627911919103837080326171652428087249155060316396079847604482382995126555569316266740618979906382149564614431429621323031661908407730211089857950683432215713792861235009}
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---------------- Cipher test message -------------------------------------------------------
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------------- c: 294788308519134333270846593857284905135857455373442198583783289201022407895389074903207314020181398353083306296977860538575798552853569209416163905920722974371423187378361919750018121989000251222185828499048068211842254020894903
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>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>BRUTE FORCING Guessing private key>>>>>>>>>>>>>>>>>>>>>>
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--------------------------------- Tried 123901 times ---------------------------------------You may need to make the file executable with:
chmod +x rsa.py