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/*=========================================================================
Program: GDCM (Grassroots DICOM). A DICOM library
Copyright (c) 2006-2011 Mathieu Malaterre
All rights reserved.
See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "gdcmCryptoFactory.h"
#include <cstdio>
#include <cstring>
#include <memory>
#include <vector>
#include "gdcmFilename.h"
#include "gdcmTesting.h"
static bool LoadFile(const char * filename, char* & buffer, size_t & bufLen)
{
FILE * f = fopen(filename, "rb");
if (f == nullptr)
{
//gdcmErrorMacro("Couldn't open the file: " << filename);
return false;
}
fseek(f, 0L, SEEK_END);
long sz = ftell(f);
rewind(f);
buffer = new char[sz];
bufLen = sz;
while (sz)
sz -= (long)fread(buffer + bufLen - sz, sizeof(char), sz, f);
return true;
}
static const gdcm::CryptographicMessageSyntax::CipherTypes ciphers[] = {
gdcm::CryptographicMessageSyntax::AES128_CIPHER,
gdcm::CryptographicMessageSyntax::AES192_CIPHER,
gdcm::CryptographicMessageSyntax::AES256_CIPHER,
gdcm::CryptographicMessageSyntax::DES3_CIPHER
};
static std::pair<gdcm::CryptographicMessageSyntax::CipherTypes, std::string> cip2str_data[] = {
std::make_pair(gdcm::CryptographicMessageSyntax::AES128_CIPHER, "AES128"),
std::make_pair(gdcm::CryptographicMessageSyntax::AES192_CIPHER, "AES192"),
std::make_pair(gdcm::CryptographicMessageSyntax::AES256_CIPHER, "AES256"),
std::make_pair(gdcm::CryptographicMessageSyntax::DES3_CIPHER, "3DES")
};
static std::map<gdcm::CryptographicMessageSyntax::CipherTypes, std::string> cip2str(cip2str_data,
cip2str_data + sizeof cip2str_data / sizeof cip2str_data[0]);
const char * const tstr = "12345";
const size_t tstr_l = strlen(tstr);
#define BUFSZ 5000
bool TestCMSProvider(gdcm::CryptographicMessageSyntax& cms, const char * provName)
{
const std::string certpath = gdcm::Filename::Join(gdcm::Testing::GetSourceDirectory(), "/Testing/Source/Data/certificate.pem" );
const std::string keypath = gdcm::Filename::Join(gdcm::Testing::GetSourceDirectory(), "/Testing/Source/Data/privatekey.pem" );
const std::string encrypted_vector = gdcm::Filename::Join(gdcm::Testing::GetSourceDirectory(), "/Testing/Source/Data/encrypted_text" );
bool ret = true;
for (unsigned int i = 0; i < 4; i++)
{
char encout[BUFSZ] = {0}, decout[BUFSZ] = {0};
size_t encoutlen = BUFSZ, decoutlen = BUFSZ;
cms.SetCipherType(ciphers[i]);
bool encryptSuccess = cms.Encrypt(encout, encoutlen, tstr, tstr_l);
if (!encryptSuccess)
{
std::cerr << provName << " using " << cip2str[ciphers[i]] << ": encryption failed" << std::endl;
ret = false;
continue;
}
bool decryptSuccess = cms.Decrypt(decout, decoutlen, encout, encoutlen);
if (!decryptSuccess)
{
std::cerr << provName << " using " << cip2str[ciphers[i]] << ": decryption failed" << std::endl;
ret = false;
continue;
}
if (decoutlen != tstr_l)
{
std::cerr << provName << " using " << cip2str[ciphers[i]] << ": decryted length different from original (" << decoutlen << " != " << tstr_l << ")" << std::endl;
ret = false;
continue;
}
if (memcmp(tstr, decout, tstr_l) != 0)
{
std::cerr << provName << " using " << cip2str[ciphers[i]] << ": decryted data different from original" << std::endl;
ret = false;
continue;
}
}
return ret;
}
bool TestCMSVector(gdcm::CryptographicMessageSyntax& cms, const char * provName)
{
char decout[BUFSZ] = {0};
size_t decoutlen = BUFSZ;
std::string encrypted_filename = gdcm::Filename::Join(gdcm::Testing::GetSourceDirectory(), "/Testing/Source/Data/encrypted_text" );
const char * tv_plaintext = "1234567890abcdefghijklmnopqrstuvwxyz";
size_t tv_plaintext_len = strlen(tv_plaintext);
char * test_vector;
// FIXME : should I delete test_vector ?
size_t tvlen;
if (!LoadFile(encrypted_filename.c_str(), test_vector, tvlen))
{
std::cerr << "Couldn't load encrypted file: " << encrypted_filename << std::endl;
return false;
}
bool decryptSuccess = cms.Decrypt(decout, decoutlen, test_vector, tvlen);
if (!decryptSuccess)
{
std::cerr << provName << " test vector decryption failed" << std::endl;
return false;
}
if (decoutlen != tv_plaintext_len)
{
std::cerr << provName << " test vector decryted length different from original (" << decoutlen << " != " << tstr_l << ")" << std::endl;
return false;
}
if (memcmp(tv_plaintext, decout, tv_plaintext_len) != 0)
{
std::cerr << provName << " test vector decryted data different from original" << std::endl;
return false;
}
return true;
}
bool TestCMSCompatibility(gdcm::CryptographicMessageSyntax& cms1, const char * provName1, gdcm::CryptographicMessageSyntax& cms2, const char * provName2)
{
const std::string encrypted_vector = gdcm::Filename::Join(gdcm::Testing::GetSourceDirectory(), "/Testing/Source/Data/encrypted_text" );
bool ret = true;
for (int i = 0; i < 4; i++)
{
char encout[BUFSZ] = {0}, decout[BUFSZ] = {0};
size_t encoutlen = BUFSZ, decoutlen = BUFSZ;
cms1.SetCipherType(ciphers[i]);
cms2.SetCipherType(ciphers[i]);
bool encryptSuccess = cms1.Encrypt(encout, encoutlen, tstr, tstr_l);
if (!encryptSuccess)
{
std::cerr << provName1 << " & " << provName2 << " using " << cip2str[ciphers[i]] << ": encryption failed" << std::endl;
ret = false;
break;
}
bool decryptSuccess = cms2.Decrypt(decout, decoutlen, encout, encoutlen);
if (!decryptSuccess)
{
std::cerr << provName1 << " & " << provName2 << " using " << cip2str[ciphers[i]] << ": decryption failed" << std::endl;
ret = false;
break;
}
if (decoutlen != tstr_l)
{
std::cerr << provName1 << " & " << provName2 << " using " << cip2str[ciphers[i]] << ": decryted length different from original (" << decoutlen << " != " << tstr_l << ")" << std::endl;
ret = false;
break;
}
if (memcmp(tstr, decout, tstr_l) != 0)
{
std::cerr << provName1 << " & " << provName2 << " using " << cip2str[ciphers[i]] << ": decryted data different from original" << std::endl;
ret = false;
break;
}
}
/*
char encout[BUFSZ] = {0}, decout[BUFSZ] = {0};
size_t encoutlen = BUFSZ, decoutlen = BUFSZ;
for (int i = 0; i < 4; i++)
{
bool ret = true;
char encout[BUFSZ] = {0}, decout[BUFSZ] = {0};
size_t encoutlen = BUFSZ, decoutlen = BUFSZ;
cms1.SetCipherType(ciphers[i]);
cms2.SetCipherType(ciphers[i]);
//cms2.Encrypt(encout, encoutlen, tstr, tstr_l);
//cms1.Decrypt(decout, decoutlen, encout, encoutlen);
//assert(decoutlen == tstr_l);
//assert(memcmp(tstr, decout, tstr_l) == 0);
bool encryptSuccess = cms1.Encrypt(encout, encoutlen, tstr, tstr_l);
if (!encryptSuccess)
{
std::cerr << provName1 << " & " << provName2 << " using " << cip2str[ciphers[i]] << ": encryption failed" << std::endl;
ret = false;
break;
}
bool decryptSuccess = cms2.Decrypt(decout, decoutlen, encout, encoutlen);
if (!decryptSuccess)
{
std::cerr << provName1 << " & " << provName2 << " using " << cip2str[ciphers[i]] << ": decryption failed" << std::endl;
ret = false;
break;
}
if (decoutlen != tstr_l)
{
std::cerr << provName1 << " & " << provName2 << " using " << cip2str[ciphers[i]] << ": decryted length different from original (" << decoutlen << " != " << tstr_l << ")" << std::endl;
ret = false;
break;
}
if (memcmp(tstr, decout, tstr_l) != 0)
{
std::cerr << provName1 << " & " << provName2 << " using " << cip2str[ciphers[i]] << ": decryted data different from original" << std::endl;
ret = false;
break;
}
}*/
return ret;
}
int TestCryptographicMessageSyntax(int, char *[])
{
std::string certpath = gdcm::Filename::Join(gdcm::Testing::GetSourceDirectory(), "/Testing/Source/Data/certificate.pem" );
std::string keypath = gdcm::Filename::Join(gdcm::Testing::GetSourceDirectory(), "/Testing/Source/Data/privatekey.pem" );
bool bret = true;
//typedef std::tuple<std::string, gdcm::CryptographicMessageSyntax&> StringCMSPairType;
std::vector<gdcm::CryptographicMessageSyntax*> availableCMS;
std::vector<std::string> availableCMSName;
#ifdef GDCM_USE_SYSTEM_OPENSSL
gdcm::CryptoFactory* osslp7 = gdcm::CryptoFactory::GetFactoryInstance(gdcm::CryptoFactory::OPENSSLP7);
std::unique_ptr<gdcm::CryptographicMessageSyntax> ocmsp7(osslp7->CreateCMSProvider());
ocmsp7->ParseKeyFile(keypath.c_str());
ocmsp7->ParseCertificateFile(certpath.c_str());
bret = TestCMSProvider(*ocmsp7, "OpenSSL PKCS7") && bret;
bret = TestCMSVector(*ocmsp7, "OpenSSL PKCS7") && bret;
availableCMS.push_back(ocmsp7.get());
availableCMSName.push_back("OpenSSL PKCS7");
#endif
#ifdef GDCM_USE_SYSTEM_OPENSSL
#ifdef GDCM_HAVE_CMS_RECIPIENT_PASSWORD
gdcm::CryptoFactory* ossl = gdcm::CryptoFactory::GetFactoryInstance(gdcm::CryptoFactory::OPENSSL);
std::unique_ptr<gdcm::CryptographicMessageSyntax> ocms(ossl->CreateCMSProvider());
ocms->ParseKeyFile(keypath.c_str());
ocms->ParseCertificateFile(certpath.c_str());
bret = TestCMSProvider(*ocms, "OpenSSL CMS") && bret;
bret = TestCMSVector(*ocms, "OpenSSL CMS") && bret;
availableCMS.push_back(ocms.get());
availableCMSName.push_back("OpenSSL CMS");
#endif
#endif
#ifdef WIN32
gdcm::CryptoFactory* capi = gdcm::CryptoFactory::GetFactoryInstance(gdcm::CryptoFactory::CAPI);
std::unique_ptr<gdcm::CryptographicMessageSyntax> ccms(capi->CreateCMSProvider());
ccms->ParseCertificateFile(certpath.c_str());
ccms->ParseKeyFile(keypath.c_str());
bret = TestCMSProvider(*ccms, "CAPI") && bret;
bret = TestCMSVector(*ccms, "CAPI") && bret;
availableCMS.push_back(ccms.get());
availableCMSName.push_back("CAPI");
#endif
for (size_t i = 0; i < availableCMS.size(); ++i)
for (size_t j = i+1; j < availableCMS.size(); ++j)
bret = TestCMSCompatibility(*availableCMS[i], availableCMSName[i].c_str(), *availableCMS[j], availableCMSName[j].c_str()) && bret;
return (bret ? 0 : 1);
}
int TestPasswordBasedEncryption(int, char *[])
{
const char *directory = gdcm::Testing::GetDataRoot();
std::string encrypted_dicomdir =
gdcm::Filename::Join(directory, "/securedicomfileset/DICOMDIR" );
std::string encrypted_image =
gdcm::Filename::Join(directory, "/securedicomfileset/IMAGES/IMAGE1" );
#ifdef GDCM_USE_SYSTEM_OPENSSL
gdcm::CryptoFactory* ossl = gdcm::CryptoFactory::GetFactoryInstance(gdcm::CryptoFactory::OPENSSL);
std::unique_ptr<gdcm::CryptographicMessageSyntax> ocms(ossl->CreateCMSProvider());
ocms->SetPassword("password", strlen("password"));
if (!TestCMSProvider(*ocms, "OpenSSL"))
return 1;
char decout[BUFSZ] = {0};
size_t decoutlen = BUFSZ;
char * ddir = new char[5000];
size_t ddirlen = 5000;
LoadFile(encrypted_dicomdir.c_str(), ddir, ddirlen);
bool decryptSuccess = ocms->Decrypt(decout, decoutlen, ddir, ddirlen);
if (!decryptSuccess)
{
std::cerr << "OpenSSL sample DICOMDIR decryption failed" << std::endl;
return 1;
}
if (decoutlen == 0)
{
std::cerr << "OpenSSL sample DICOMDIR decrypted length == 0" << std::endl;
return 1;
}
#endif
return 0;
}
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