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removed cryptopp, openssl shall be used instead for blinding (but not implemented yet)

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This commit is contained in:
Gulliver 2024-07-14 10:18:41 +02:00
parent 96d25a0a9a
commit 2a33e41376
2 changed files with 200 additions and 201 deletions
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21
CMakeLists.txt
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@ -7,6 +7,7 @@ enable_language(CXX)
set(CMAKE_CXX_STANDARD 17) set(CMAKE_CXX_STANDARD 17)
set(CMAKE_EXPORT_COMPILE_COMMANDS On) set(CMAKE_EXPORT_COMPILE_COMMANDS On)
set(CMAKE_POLICY_DEFAULT_CMP0077 NEW)
if(POLICY CMP0077) if(POLICY CMP0077)
cmake_policy(SET CMP0077 NEW) cmake_policy(SET CMP0077 NEW)
endif() endif()
@ -52,16 +53,16 @@ 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) # GIT_TAG CRYPTOPP_8_7_0_1)
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()
@ -94,7 +95,7 @@ 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)

52
test/test_crypto.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,
CryptoPP::Integer& r, const 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());
@ -59,23 +59,19 @@ CryptoPP::Integer blind_signature(const CryptoPP::SecByteBlock& orig,
return ss; return ss;
} }
CryptoPP::Integer unblind_signature(CryptoPP::Integer const & ss, CryptoPP::Integer unblind_signature(const CryptoPP::Integer &ss,
CryptoPP::Integer& r, const 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,
CryptoPP::Integer& r, const CryptoPP::Integer &r,
const CryptoPP::RSA::PublicKey &pub_key) {
const CryptoPP::RSA::PublicKey& pub_key) CryptoPP::Integer s = unblind_signature(ss, r, 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;
} }
@ -103,8 +99,8 @@ 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;
@ -154,7 +150,8 @@ TEST_CASE("cryptopp1", "[crypto]") {
} }
*/
/*
TEST_CASE("cryptopp", "[crypto]") { TEST_CASE("cryptopp", "[crypto]") {
using namespace CryptoPP; using namespace CryptoPP;
using std::cout; using std::cout;
@ -186,7 +183,7 @@ 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;
@ -250,3 +247,4 @@ TEST_CASE("cryptopp", "[crypto]") {
} }
cout << "Verified signature" << endl; cout << "Verified signature" << endl;
} }
*/