______ _____ ___ ______ _ | ___ | ___|/ _ \ | ___ \ | | | |_/ | `--./ /_\ \ | |_/ /_ __ ___ __ _| | __ ___ _ __ | / `--. \ _ | | ___ \ '__/ _ \/ _` | |/ // _ \ '__| | |\ \/\__/ / | | | | |_/ / | | __/ (_| | <| __/ | \_| \_\____/\_| |_/ \____/|_| \___|\__,_|_|\_\\___|_| ********************************************************************** * SYNOPSIS ********************************************************************** RSABreaker is a command line tool to break RSA keys. It is written in Java and uses Wiener's attack. RSA consists in finding a public key (n,e) and a private key (n,d) such that n=p.q and e.d=1 mod (p-1)(q-1) Given (n,e) this tool can find d, i.e. the private key (n,d). The algorithm is based on Wiener's attack and is applicable if d<n^(1/4). ********************************************************************** * INSTALLATION ********************************************************************** 1)from compiled jar: -------------------- $wget https://github.com/Fengtan/rsa-breaker/raw/master/dist/RSABreaker.jar execution: $java -jar RSABreaker.jar 2)from sources: ------------------- $git clone https://github.com/Fengtan/rsa-breaker.git rsa-breaker $cd rsa-breaker/ $javac src/*.java -d class/ $jar cvfm dist/RSABreaker.jar MANIFEST.MF -C class/ . execution: $java -jar dist/RSABreaker.jar or: $java -cp class/ RSABreaker ********************************************************************** * TEST CASES ********************************************************************** Test files are in /test They can be edited with any hex editor, for instance XVI32 #using input numbers in files: $java -jar RSABreaker.jar -e=test/e1 -n=test/n1 #using input numbers on CLI: $java -jar RSABreaker.jar -e=2621 -n=8927 #output in a file: $java -jar RSABreaker.jar -e=2621 -n=8927 -out=./out #verbose mode: $java -jar RSABreaker.jar -e=2621 -n=8927 -v ********************************************************************** * LICENSE ********************************************************************** MIT License: www.opensource.org/licenses/mit-license.php Copyright (c) 2010 Fengtan<https://github.com/Fengtan/> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.