LIBTOMCRYPT RSA DIGITAL SIGNATURES HOW-TO This how-to describes how to implement RSA digital signatures using LibTomCrypt (and LibTomMath) on Windows and Mac OS X. GETTING STARTED 1. Get LibTomMath and LibTomCrypt git clone https://github.com/TaleTN/libtommath.git git clone https://github.com/TaleTN/libtomcrypt.git 2. Patch LibTomCrypt [n]make [-f makefile.msvc] patch 3. Remove unused source files (optional) perl remove_unused.pl --force 4. Build LibTomMath and LibTomCrypt [n]make [-f makefile.msvc] 5. Generate public/private key pair [n]make [-f makefile.msvc] key 6. Run sign and verify examples [n]make [-f makefile.msvc] test 7. Have fun! FILES IN THIS DISTRIBUTION dertoh.cpp - Utility that converts DER to C/C++ header file format, so you can directly include the public key in a C/C++ source file. dertopem.sh - Bash script that uses OpenSSL to convert the public and private key pair from DER to PEM file format. error.h - Helper routines for rsa_make_key.cpp, rsa_sign.cpp, and rsa_verify.cpp. LICENSE - License, duh! makefile - GCC/Clang makefile. makefile.msvc - Microsoft C/C++ makefile. patches/ - LibTomCrypt patches. README - <-- You are here. remove_unused.pl - Perl script that removes all unused LibTomMath and LibTomCrypt files. rsa_make_key.cpp - Example that generates a public and private key pair. rsa_sign.cpp - Example that signs a message. rsa_verify.cpp - Example that verifies a signature. LICENSE Copyright (C) 2015-2017 Theo Niessink <theo@taletn.com> This work is free. You can redistribute it and/or modify it under the terms of the Do What The Fuck You Want To Public License, Version 2, as published by Sam Hocevar. See the LICENSE file for more details.