This code demonstrates how to load an X509 certificate and private/public
keys from files.
#include <iostream>
#include <fstream>
#include <string>
#include <cryptopp/rsa.h>
#include <cryptopp/files.h>
#include <cryptopp/base64.h>
#include <cryptopp/osrng.h>
#include <cryptopp/pssr.h>
using namespace CryptoPP;
using namespace std;
void loadX509Certificate(const string& certFile, X509Certificate&
certificate) {
ifstream file(certFile.c_str(), ios::in | ios::binary);
if (!file) {
cerr << "Error: Failed to open certificate file." << endl;
// Handle error appropriately
return;
}
try {
PEM_Load(file, certificate);
} catch (const Exception& ex) {
cerr << "Error: Failed to load X509 certificate - " << ex.what() <<
endl;
// Handle error appropriately
return;
}
}
void loadPrivateKey(const string& privateKeyFile, RSA::PrivateKey&
privateKey) {
ifstream file(privateKeyFile.c_str());
if (!file) {
cerr << "Error: Failed to open private key file." << endl;
// Handle error appropriately
return;
}
try {
PEM_Load(file, privateKey);
} catch (const Exception& ex) {
cerr << "Error: Failed to load private key - " << ex.what() << endl;
// Handle error appropriately
return;
}
}
void loadPublicKey(const string& publicKeyFile, RSA::PublicKey& publicKey) {
ifstream file(publicKeyFile.c_str());
if (!file) {
cerr << "Error: Failed to open public key file." << endl;
// Handle error appropriately
return;
}
try {
PEM_Load(file, publicKey);
} catch (const Exception& ex) {
cerr << "Error: Failed to load public key - " << ex.what() << endl;
// Handle error appropriately
return;
}
}
int main() {
string certFile = "certificate.pem";
string privateKeyFile = "private.key";
string publicKeyFile = "public.key";
X509Certificate certificate;
RSA::PrivateKey privateKey;
RSA::PublicKey publicKey;
loadX509Certificate(certFile, certificate);
loadPrivateKey(privateKeyFile, privateKey);
loadPublicKey(publicKeyFile, publicKey);
// Continue with using the certificate and keys...
return 0;
}
One Sini <ones...@gmail.com> schrieb am Mi. 24. Apr. 2024 um 19:51:
> Test this way
>
> a basic guide on how to generate an RSA key pair with PSS padding, sign an
> X509 certificate with the private key, and verify the signature with the
> public key using the Crypto++ library:
>
> 1. Generating an RSA Key Pair with PSS Padding:
>
> cpp
>
> Copy code
>
> #include <cryptopp/rsa.h>
>
> #include <cryptopp/osrng.h>
>
> #include <cryptopp/pssr.h>
>
>
> using namespace CryptoPP;
>
>
> void generateRSAKeyPair(RSA::PrivateKey& privateKey, RSA::PublicKey&
> publicKey) {
>
> AutoSeededRandomPool rng;
>
>
> InvertibleRSAFunction params;
>
> params.GenerateRandomWithKeySize(rng, 2048);
>
>
> privateKey = RSA::PrivateKey(params);
>
> publicKey = RSA::PublicKey(params);
>
> }
>
>
> int main() {
>
> RSA::PrivateKey privateKey;
>
> RSA::PublicKey publicKey;
>
>
> generateRSAKeyPair(privateKey, publicKey);
>
>
> // The RSA key pair has been generated and is now available
>
> return 0;
>
> }
>
> 1. Signing the X509 Certificate with the Private Key:
>
> cpp
>
>
> Copy code
>
> #include <cryptopp/cryptlib.h>
>
> #include <cryptopp/oids.h>
>
> #include <cryptopp/rsa.h>
>
> #include <cryptopp/sha.h>
>
> #include <cryptopp/filters.h>
>
> #include <cryptopp/base64.h>
>
>
> using namespace CryptoPP;
>
>
> void signCertificate(const RSA::PrivateKey& privateKey, const X509&
> certificate, byte* signature) {
>
> // Implement the process of signing the certificate here
>
> // Use privateKey and certificate to sign the certificate
>
> }
>
>
> int main() {
>
> // Load or create your X509 certificate
>
> // Here, we assume you already have an X509 certificate
>
>
> RSA::PrivateKey privateKey;
>
> // Load or generate your private key
>
> // Here, we assume you already have a private key
>
>
> byte signature[256]; // Space for the signature
>
>
> signCertificate(privateKey, certificate, signature);
>
>
> // The certificate has been signed, and the signature is now available
>
> return 0;
>
> }
>
> 1. Verifying the Signature with the Public Key:
>
> cpp
>
>
> Copy code
>
> #include <cryptopp/rsa.h>
>
> #include <cryptopp/sha.h>
>
> #include <cryptopp/filters.h>
>
> #include <cryptopp/base64.h>
>
>
> using namespace CryptoPP;
>
>
> bool verifySignature(const RSA::PublicKey& publicKey, const X509&
> certificate, const byte* signature) {
>
> // Implement the process of verifying the signature here
>
> // Use publicKey, certificate, and signature
>
>
> // Return true if the signature is valid, otherwise false
>
> return false;
>
> }
>
>
> int main() {
>
> // Load or create your X509 certificate
>
> // Here, we assume you already have an X509 certificate
>
>
> RSA::PublicKey publicKey;
>
> // Load or generate your public key
>
> // Here, we assume you already have a public key
>
>
> byte signature[256]; // Take the signature from the certificate
> signature
>
>
> bool isValid = verifySignature(publicKey, certificate, signature);
>
>
> // Check if the signature is valid
>
> return 0;
>
> }
>
> These code snippets serve as a foundation. You will need to adapt them
> according to your specific implementation, including the loading process
> for the X509 certificate and the private/public keys. Remember to include
> error handling and handle edge cases in your implementation
> I hope this help you
> ;)
>
> Manish sharma <manish.sha...@brsoftech.org> schrieb am Mi. 24. Apr. 2024
> um 14:42:
>
>> Crypto Betting <https://www.brsoftech.com/blog/crypto-sports-betting/>
>>
>> On Wed, Apr 24, 2024 at 6:08 PM Frank Sapone <franksapone...@gmail.com>
>> wrote:
>>
>>> Has anyone figured out how to use PSS and SHA256 *WITH *CryptoPP-PEM?
>>> I also tried reporting this to the issuer tracker at
>>> https://github.com/noloader/cryptopp-pem and nobody has replied. I
>>> can't imagine I'm the only person using this library in order to achieve
>>> this with X509 Certs.
>>>
>>> Thanks,
>>> Frank
>>>
>>> On Wednesday, April 17, 2024 at 11:43:54 AM UTC-4 HELA YAICH wrote:
>>>
>>>> Hello,
>>>> (I'm new user of ns3 and crypto)
>>>> I have link errors with Crypto++. These errors indicate that the
>>>> compiler cannot find certain functions or classes defined in Crypto++. This
>>>> can happen if Crypto++ is not correctly linked to my project. However, I
>>>> tried to modify my project's CMakeLists.txt file as follows:
>>>> set(target_prefix scratch_)
>>>>
>>>> function(create_scratch source_files)
>>>> # Return early if no sources in the subdirectory
>>>> list(LENGTH source_files number_sources)
>>>> if(number_sources EQUAL 0)
>>>> return()
>>>> endif()
>>>>
>>>> # If the scratch has more than a source file, we need to find the
>>>> source with
>>>> # the main function
>>>> set(scratch_src)
>>>> foreach(source_file ${source_files})
>>>> file(READ ${source_file} source_file_contents)
>>>> string(REGEX MATCHALL "main[(| (]" main_position
>>>> "${source_file_contents}")
>>>> if(CMAKE_MATCH_0)
>>>> set(scratch_src ${source_file})
>>>> endif()
>>>> endforeach()
>>>>
>>>> if(NOT scratch_src)
>>>> return()
>>>> endif()
>>>>
>>>> # Get parent directory name
>>>> get_filename_component(scratch_dirname ${scratch_src} DIRECTORY)
>>>> string(REPLACE "${CMAKE_CURRENT_SOURCE_DIR}" "" scratch_dirname
>>>> "${scratch_dirname}"
>>>> )
>>>> string(REPLACE "/" "_" scratch_dirname "${scratch_dirname}")
>>>>
>>>> # Get source name
>>>> get_filename_component(scratch_name ${scratch_src} NAME_WE)
>>>>
>>>> set(target_prefix scratch_)
>>>> if(scratch_dirname)
>>>> # Join the names together if dirname is not the scratch folder
>>>> set(target_prefix scratch${scratch_dirname}_)
>>>> endif()
>>>>
>>>> # Get source absolute path and transform into relative path
>>>> get_filename_component(scratch_src ${scratch_src} ABSOLUTE)
>>>> get_filename_component(scratch_absolute_directory ${scratch_src}
>>>> DIRECTORY)
>>>> string(REPLACE "${PROJECT_SOURCE_DIR}" "${CMAKE_OUTPUT_DIRECTORY}"
>>>> scratch_directory ${scratch_absolute_directory}
>>>> )
>>>> add_executable(${target_prefix}${scratch_name} "${source_files}")
>>>> if(${NS3_STATIC})
>>>> target_link_libraries(
>>>> ${target_prefix}${scratch_name} ${LIB_AS_NEEDED_PRE_STATIC}
>>>> ${lib-ns3-static}
>>>> )
>>>> else()
>>>> target_link_libraries(
>>>> ${target_prefix}${scratch_name} "${ns3-libs}"
>>>> "${ns3-contrib-libs}"
>>>> "${ns3-external-libs}"
>>>> )
>>>> endif()
>>>> set_runtime_outputdirectory(
>>>> ${scratch_name} ${scratch_directory}/ ${target_prefix}
>>>> )
>>>> endfunction()
>>>>
>>>> # Scan *.cc files in ns-3-dev/scratch and build a target for each
>>>> file(GLOB single_source_file_scratches CONFIGURE_DEPENDS
>>>> ${CMAKE_CURRENT_SOURCE_DIR}/*.cc)
>>>> foreach(scratch_src ${single_source_file_scratches})
>>>> create_scratch(${scratch_src})
>>>> endforeach()
>>>>
>>>> # Scan *.cc files in ns-3-dev/scratch subdirectories and build a target
>>>> for each
>>>> # subdirectory
>>>> file(
>>>> GLOB_RECURSE scratch_subdirectories
>>>> CONFIGURE_DEPENDS
>>>> LIST_DIRECTORIES true
>>>> ${CMAKE_CURRENT_SOURCE_DIR}/**
>>>> )
>>>> # Filter out files
>>>> foreach(entry ${scratch_subdirectories})
>>>> if(NOT (IS_DIRECTORY ${entry}))
>>>> list(REMOVE_ITEM scratch_subdirectories ${entry})
>>>> endif()
>>>> endforeach()
>>>>
>>>> foreach(subdir ${scratch_subdirectories})
>>>> if(EXISTS ${subdir}/CMakeLists.txt)
>>>> # If the subdirectory contains a CMakeLists.txt file
>>>> # we let the CMake file manage the source files
>>>> #
>>>> # Use this if you want to link to external libraries
>>>> # without creating a module
>>>> add_subdirectory(${subdir})
>>>> else()
>>>> # Otherwise we pick all the files in the subdirectory
>>>> # and create a scratch for them automatically
>>>> file(GLOB scratch_sources CONFIGURE_DEPENDS ${subdir}/*.cc)
>>>> create_scratch("${scratch_sources}")
>>>> endif()
>>>> endforeach()
>>>> find_external_library(DEPENDENCY_NAME cryptopp
>>>> HEADER_NAME aes.h
>>>> LIBRARY_NAME cryptopp
>>>> SEARCH_PATHS /usr/include/cryptopp)
>>>>
>>>>
>>>> if(${CRYPTOPP_FOUND}) # Notice that the contents of DEPENDENCY_NAME
>>>> became a prefix for the _FOUND variable
>>>> find_package(cryptopp REQUIRED)
>>>> include_directories(${CRYPTOPP_INCLUDE_DIRS})
>>>> link_libraries(${CRYPTOPP_LIBRARIES})
>>>> endif()
>>>> add_executable(${target_prefix}${scratch_name} "fanetex.cc")
>>>> target_link_libraries(${target_prefix}${scratch_name} PRIVATE cryptopp)
>>>>
>>>> can you help me to solve this problem ? Thank you [image: Capture
>>>> d’écran 2024-04-17 114345.png]
>>>>
>>>> Le mardi 16 avril 2024 à 21:53:22 UTC-5, Frank Sapone a écrit :
>>>>
>>>>> I grabbed it but it's not relevant. I need to have a certificate with
>>>>> RSA PSS that can be read by CryptoPP with the X509Cert lib. Is it
>>>>> possible
>>>>> to do this?
>>>>>
>>>>> On Tuesday, April 16, 2024 at 3:19:47 PM UTC-4 Jeffrey Walton wrote:
>>>>>
>>>>>> On Tue, Apr 16, 2024 at 1:44 PM One Sini <one...@gmail.com> wrote:
>>>>>>
>>>>>>> I wasn't entirely satisfied with the security, so I've adjusted the
>>>>>>> code. I'm not sure if that helps you, depending on what you're doing
>>>>>>> with
>>>>>>> it.
>>>>>>>
>>>>>>> This code uses RSA with OAEP (Optimal Asymmetric Encryption Padding)
>>>>>>> to avoid security issues like padding oracle attacks. It generates RSA
>>>>>>> keys
>>>>>>> with a length of 2048 bits, encrypts the message with OAEP padding, and
>>>>>>> then decrypts it.
>>>>>>>
>>>>>>> Best Regards Satoshi
>>>>>>>
>>>>>>
>>>>>> I deleted the message from the group. The *.pdf and *.pages smells of
>>>>>> malware.
>>>>>>
>>>>>> If you want to provide code, please inline it or provide it as a text
>>>>>> attachment.
>>>>>>
>>>>>> Jeff
>>>>>>
>>>>>>> --
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>>> https://groups.google.com/d/msgid/cryptopp-users/db9bad9f-be9e-4a25-a09f-d52ce28adec0n%40googlegroups.com
>>> <https://groups.google.com/d/msgid/cryptopp-users/db9bad9f-be9e-4a25-a09f-d52ce28adec0n%40googlegroups.com?utm_medium=email&utm_source=footer>
>>> .
>>>
>>
>>
>> --
>> Kind Regards,
>> Manish Kr. Sharma
>> Digital Marketing Manager
>>
>> Website: www.brsoftech.com
>> E-mail: manish.sha...@brsoftech.org
>>
>>
>>
>> --
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>> To view this discussion on the web visit
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>> <https://groups.google.com/d/msgid/cryptopp-users/CABUB1NSTdFJPHBeh9b-fqfjrQBUWVzDzjNdjYUAQpzBb9CQsZw%40mail.gmail.com?utm_medium=email&utm_source=footer>
>> .
>>
>
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