RSA

RSA intro video

RSA video

RSA sign

In order to understand hex and type parameters read Hash

RSA

spec

Description: Public-key cryptosystem

Problem: Integer Factoriation

Uses: Encrypt, digital signatures

• It only supports "type":"string"

How to ???

import requests
import json
import os,binascii

def sending(message):
    url = 'http://127.0.0.1:6613/'
    response = requests.post(url, data=message)
    print response.content
    return response.content

def rsa(data_js, bits):
    req=json.loads(data_js)
    req["length"]=bits
    print "Send gen parameters : \n " + json.dumps(req) +"\n"
    data_js_n=sending(json.dumps(req))
    answ=json.loads(data_js_n)
    print "Recived  rsa gen: \n"+(json.dumps(answ)) +"\n\n\n"
    json_s=json_v='{ "version": 1 , "algorithm":"RSA", "type":"string","plaintext": "Hello world!", "hex":0,"privkey": "" ,"operation":"sign"}'
    req=json.loads(json_s)
    req["privkey"]=answ["privkey"]
    print "Send sign : \n " + json.dumps(req) +"\n"
    data_js_n=sending(json.dumps(req))
    answ_1=json.loads(data_js_n)
    print "Recived  sign done: \n"+(json.dumps(answ_1)) +"\n\n\n"
    json_v='{ "version": 1 , "algorithm":"RSA", "type":"string","plaintext": "Hello world!", "hex":0,"pubkey": "" ,"sign":"","operation":"verify"}'
    req=json.loads(json_v)
    req["pubkey"]=answ["pubkey"]
    req["sign"]=answ_1["sign"]
    print "Send verify : \n " + json.dumps(req) +"\n"
    data_js_n=sending(json.dumps(req))
    answ_2=json.loads(data_js_n)
    print "Recived  verify done: \n"+(json.dumps(answ_2)) +"\n\n\n"
    json_enc='{ "version": 1 , "algorithm":"RSA", "type":"string","pubkey": "" ,"operation":"enc", "plaintext":"Hello world!","hex":0 }'
    req=json.loads(json_enc)
    req["pubkey"]=answ["pubkey"]
    print "Send enc : \n " + json.dumps(req) +"\n"
    data_js_n=sending(json.dumps(req))
    answ_3=json.loads(data_js_n)
    print "Recived  enc done: \n"+(json.dumps(answ_3)) +"\n\n\n"
    json_dec='{ "version": 1 , "algorithm":"RSA", "type":"string","privkey": "" ,"operation":"dec", "plaintext":"" }'
    req=json.loads(json_dec)
    req["privkey"]=answ["privkey"]
    req["plaintext"]=answ_3["result"]
    print "Send dec : \n " + json.dumps(req) +"\n"
    data_js_n=sending(json.dumps(req))
    answ_3=json.loads(data_js_n)
    print "Recived  dec done: \n"+(json.dumps(answ_3)) +"\n\n\n"



rsa_gen='{ "version": 1 , "algorithm":"RSA", "operation":"gen" , "length": 0 }'
rsa(rsa_gen,1024)

In this example we generate a RSA key (1024 bits), sign and validate "Hello world!" string, we enc and dec "Hello world!" string.

The default hash function to sign is sha3256, you can change by adding "hashsign" and can be one of {"sha3_512","sha3_384","sha3_256","sha3_224","sha_512","sha_384","sha_256","sha_224","sha_1","whirlpool"}

Json to gen

{ "version": 1 , "algorithm":"RSA", "operation":"gen" , "length": INT }

Json to sign

{ "version": 1 , "algorithm":"RSA", "type":"string","plaintext": "your string", "hex":BOOL,"privkey": "your hex privkey" ,"operation":"sign"}

Json to verify

{ "version": 1 , "algorithm":"RSA", "type":"string","plaintext": "your string", "hex":BOOL,"pubkey": "your hex pubkey" ,"sign":"your hex signature","operation":"verify"}

Json to enc

{ "version": 1 , "algorithm":"RSA", "type":"string","pubkey": "your hex pubkey" ,"operation":"enc", "plaintext":"your string","hex":BOOL }

Json to dec

{ "version": 1 , "algorithm":"RSA", "type":"string","privkey": "your hex privkey" ,"operation":"dec", "plaintext":"your enc hex string" }