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2 Commits

Author SHA1 Message Date
Gulliver
dac6a78311 added test_crypto.cpp with first code for rsa blinding 2023-05-07 22:11:23 +02:00
Gulliver
a257fe227a included crypto++ lib 2023-04-20 22:56:58 +02:00
3 changed files with 203 additions and 213 deletions

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@ -1,11 +0,0 @@
# To get started with Dependabot version updates, you'll need to specify which
# package ecosystems to update and where the package manifests are located.
# Please see the documentation for all configuration options:
# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
version: 2
updates:
- package-ecosystem: "" # See documentation for possible values
directory: "/" # Location of package manifests
schedule:
interval: "weekly"

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@ -1,10 +1,9 @@
cmake_minimum_required(VERSION 3.15) cmake_minimum_required(VERSION 3.1.3)
enable_language(C) enable_language(C)
enable_language(CXX) enable_language(CXX)
set(CMAKE_CXX_STANDARD 17) set(CMAKE_CXX_STANDARD 17)
set(CMAKE_POLICY_DEFAULT_CMP0077 NEW)
if(POLICY CMP0077) if(POLICY CMP0077)
cmake_policy(SET CMP0077 NEW) cmake_policy(SET CMP0077 NEW)
endif() endif()
@ -32,7 +31,7 @@ set(CROW_BUILD_DOCS Off)
# add crow project to the build # add crow project to the build
FetchContent_Declare(crow FetchContent_Declare(crow
GIT_REPOSITORY https://github.com/CrowCpp/Crow.git GIT_REPOSITORY https://github.com/CrowCpp/Crow.git
GIT_TAG v1.2.0 GIT_TAG v1.0+5
) )
if(NOT crow_POPULATED) if(NOT crow_POPULATED)
@ -50,16 +49,16 @@ if(NOT expected_POPULATED)
endif(NOT expected_POPULATED) endif(NOT expected_POPULATED)
# add crypt++ (+cmake) library # add crypt++ (+cmake) library
#set(CRYPTOPP_BUILD_TESTING Off) set(CRYPTOPP_BUILD_TESTING Off)
#set(CRYPTOPP_INSTALL Off) set(CRYPTOPP_INSTALL Off)
#if(NOT cryptopp_POPULATED) if(NOT cryptopp_POPULATED)
# FetchContent_Declare(cryptopp FetchContent_Declare(cryptopp
# GIT_REPOSITORY https://github.com/abdes/cryptopp-cmake.git GIT_REPOSITORY https://github.com/abdes/cryptopp-cmake.git
# GIT_TAG CRYPTOPP_8_7_0_1) GIT_TAG CRYPTOPP_8_7_0)
# FetchContent_Populate(cryptopp) FetchContent_Populate(cryptopp)
# add_subdirectory(${cryptopp_SOURCE_DIR} ${cryptopp_BINARY_DIR}) add_subdirectory(${cryptopp_SOURCE_DIR} ${cryptopp_BINARY_DIR})
#endif(NOT cryptopp_POPULATED) endif(NOT cryptopp_POPULATED)
include(CTest) include(CTest)
enable_testing() enable_testing()
@ -92,7 +91,7 @@ set(LIB_SOURCES
src/big_int.hpp src/big_int.cpp ) src/big_int.hpp src/big_int.cpp )
add_library(oc-mint-lib ${LIB_SOURCES}) add_library(oc-mint-lib ${LIB_SOURCES})
target_link_libraries(oc-mint-lib PUBLIC Crow::Crow) # cryptopp::cryptopp) target_link_libraries(oc-mint-lib PUBLIC Crow::Crow cryptopp::cryptopp)
target_include_directories(oc-mint-lib PUBLIC ${expected_SOURCE_DIR}/include src) target_include_directories(oc-mint-lib PUBLIC ${expected_SOURCE_DIR}/include src)
add_executable(${PROJECT_NAME} src/main.cpp) add_executable(${PROJECT_NAME} src/main.cpp)

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@ -1,21 +1,21 @@
#include <catch2/catch_test_macros.hpp> #include <catch2/catch_test_macros.hpp>
//#include "cryptlib.h" #include "cryptlib.h"
//#include "integer.h" #include "integer.h"
//#include "nbtheory.h" #include "nbtheory.h"
//#include "osrng.h" #include "osrng.h"
//#include "rsa.h" #include "rsa.h"
//#include "sha.h" #include "sha.h"
#include <iostream> #include <iostream>
#include <stdexcept> #include <stdexcept>
/*
CryptoPP::Integer blind_signature(const CryptoPP::SecByteBlock &orig, CryptoPP::Integer blind_signature(const CryptoPP::SecByteBlock& orig,
const CryptoPP::Integer &r, CryptoPP::Integer& r,
const CryptoPP::RSA::PublicKey &pub_key, const CryptoPP::RSA::PublicKey& pub_key,
const CryptoPP::RSA::PrivateKey &priv_key) { const CryptoPP::RSA::PrivateKey& priv_key) {
using namespace CryptoPP; using namespace CryptoPP;
using std::cout; using std::cout;
using std::endl; using std::endl;
@ -23,7 +23,7 @@ CryptoPP::Integer blind_signature(const CryptoPP::SecByteBlock &orig,
// Convenience // Convenience
const Integer &n = pub_key.GetModulus(); const Integer &n = pub_key.GetModulus();
const Integer &e = pub_key.GetPublicExponent(); const Integer &e = pub_key.GetPublicExponent();
// const Integer &d = priv_key.GetPrivateExponent(); const Integer &d = priv_key.GetPrivateExponent();
// For sizing the hashed message buffer. This should be SHA256 size. // For sizing the hashed message buffer. This should be SHA256 size.
const size_t sig_size = UnsignedMin(SHA256::BLOCKSIZE, n.ByteCount()); const size_t sig_size = UnsignedMin(SHA256::BLOCKSIZE, n.ByteCount());
@ -59,19 +59,23 @@ CryptoPP::Integer blind_signature(const CryptoPP::SecByteBlock &orig,
return ss; return ss;
} }
CryptoPP::Integer unblind_signature(const CryptoPP::Integer &ss, CryptoPP::Integer unblind_signature(CryptoPP::Integer const & ss,
const CryptoPP::Integer &r, CryptoPP::Integer& r,
const CryptoPP::RSA::PublicKey &pub_key) {
const CryptoPP::RSA::PublicKey& pub_key)
{
const CryptoPP::Integer &n = pub_key.GetModulus(); const CryptoPP::Integer &n = pub_key.GetModulus();
CryptoPP::Integer s = a_times_b_mod_c(ss, r.InverseMod(n), n); CryptoPP::Integer s = a_times_b_mod_c(ss, r.InverseMod(n), n);
return s; return s;
} }
CryptoPP::Integer verify(CryptoPP::Integer const &ss, CryptoPP::Integer verify(CryptoPP::Integer const & ss,
const CryptoPP::Integer &r, CryptoPP::Integer& r,
const CryptoPP::RSA::PublicKey &pub_key) {
CryptoPP::Integer s = unblind_signature(ss, r, pub_key); const CryptoPP::RSA::PublicKey& pub_key)
{
CryptoPP::Integer s = unblind_signature(ss,r,pub_key);
CryptoPP::Integer v = pub_key.ApplyFunction(s); CryptoPP::Integer v = pub_key.ApplyFunction(s);
return v; return v;
} }
@ -99,8 +103,8 @@ TEST_CASE("cryptopp1", "[crypto]") {
cout << "Pub exp: " << std::hex << e << endl; cout << "Pub exp: " << std::hex << e << endl;
cout << "Priv mod: " << std::hex << priv_key.GetModulus() << endl; cout << "Priv mod: " << std::hex << priv_key.GetModulus() << endl;
cout << "Priv exp: " << std::hex << d << endl; cout << "Priv exp: " << std::hex << d << endl;
const char *MESSAGE = "secret"; const char* MESSAGE = "secret";
SecByteBlock orig((const byte *) MESSAGE, 6U); SecByteBlock orig((const byte *)MESSAGE, 6U);
// Alice blinding // Alice blinding
Integer r; Integer r;
@ -150,8 +154,7 @@ TEST_CASE("cryptopp1", "[crypto]") {
} }
*/
/*
TEST_CASE("cryptopp", "[crypto]") { TEST_CASE("cryptopp", "[crypto]") {
using namespace CryptoPP; using namespace CryptoPP;
using std::cout; using std::cout;
@ -183,7 +186,7 @@ TEST_CASE("cryptopp", "[crypto]") {
SecByteBlock buff_1, buff_2, buff_3; SecByteBlock buff_1, buff_2, buff_3;
// Alice original message to be signed by Bob // Alice original message to be signed by Bob
SecByteBlock orig((const byte *) "secret", 6U); SecByteBlock orig((const byte *)"secret", 6U);
Integer m(orig.data(), orig.size()); Integer m(orig.data(), orig.size());
cout << "Message: " << std::hex << m << endl; cout << "Message: " << std::hex << m << endl;
@ -247,4 +250,3 @@ TEST_CASE("cryptopp", "[crypto]") {
} }
cout << "Verified signature" << endl; cout << "Verified signature" << endl;
} }
*/