MS CAPICOM Samples

本文是 MS CryptoAPI Samples 的姐妹篇，演示如何使用微软的CAPICOM组件。CAPICOM组件是建立在CryptoAPI基础上的ActiveX控件，供JavaScript、VBScript以及其他非C/C++语言使用。使用该组件，极大简化加密、签名应用程序的编写，但功能略受限制。

// examCAPI.cpp : 定义控制台应用程序的入口点。
//

#include " stdafx.h "
#include < ATLComTime.h >

// 加载 CAPICOM 组件
# import " capicom.dll "
using namespace CAPICOM;

// =========================================================
// 工具方法
// =========================================================

// 暂停
void pause()

{
_tprintf(_T("\nPress ENTER key to continue

\n"));
getchar();
}

// 错误报告
void CancelByError(HRESULT errCode, TCHAR * errStr)

{
    _tprintf(_T("\nFAULT:\n"));
    _tprintf(_T("An error occurred in running the program. \n"));
    _tprintf(_T("%s \n"), errStr);
    throw errCode;
}

// 字节反序
void reverse(BYTE * data, int nLen)

{
for(int ii=0; ii < nLen/2; ii++)

{
        BYTE c = data[ii];
        data[ii] = data[nLen -ii -1];
        data[nLen -ii -1] = c;
    }
}

// 输出文件
void writeFile( const char * sFileName, BYTE * data, DWORD nSize)

{
    FILE* fp = fopen(sFileName, "wb");
    if(fp == NULL)

{
        CancelByError(0, _T("Open file for write failed!"));
    }

    if(fwrite(data, 1, nSize, fp) != nSize)

{
        fclose(fp);
        CancelByError(0, _T("Write to file failed!"));
    }

    fclose(fp);
    printf("Write %d bytes to file '%s'! \n", nSize, sFileName);
}

// 读取文件(data = NULL for get file size ONLY)
void readFile( const char * sFileName, BYTE * data, DWORD & nSize)

{
    nSize = 0;
    FILE* fp = fopen(sFileName, "rb");
    if(fp == NULL)

{
        CancelByError(0, _T("Open file for read failed!"));
    }

    fseek(fp, 0, SEEK_END);
    nSize = ftell(fp);
    fseek(fp, 0, SEEK_SET);

    if(data != NULL)

{
if(fread(data, 1, nSize, fp) != nSize)

{
            fclose(fp);
            CancelByError(0, _T("Read from file failed!"));
        }
        printf("Read %d bytes from file '%s'! \n", nSize, sFileName);
    }
    fclose(fp);
}

// 显示HEX码
void showData(BYTE * data, DWORD nSize)

{
    printf("\n****\n");
    for(DWORD ii=0; ii < nSize; ii++)

{
        printf("%02x ", data[ii]);
        if((ii+1) % 16 ==0) printf("\n");
    }
    printf("\n**** %d bytes\n", nSize);
}

// 准备数据(Auto new outData)
void prepareData(BYTE * inData, DWORD inSize, LPCSTR inFileName, BYTE * & outData, DWORD & outSize)

{
if(inData == NULL && inFileName != NULL)

{
        // Read from file
        readFile(inFileName, NULL, outSize);
        if(outSize != 0)

{
            outData = (BYTE*) new char[outSize +1];
            memset(outData, 0, outSize +1);
            if(outData == NULL)    CancelByError(0, _T("Not enough memory. \n"));
            readFile(inFileName, outData, outSize);
        }
    }
    else

{
        // Read from buffer
        outSize = inSize;
        outData = (BYTE*) new char[outSize];
        if(outData == NULL)    CancelByError(0, _T("Not enough memory. \n"));
        memcpy(outData, inData, outSize);
    }
}

// 获取BSTR的长度及字节值
void getBSTRByte(BSTR & bstr, BYTE * ( & data), DWORD & nSize)

{
data = (BYTE*) bstr;
nSize = *((DWORD*)bstr - 1);
}

// =========================================================
// 编码与解码
// =========================================================

// BASE64编码
void Base64Encode(BYTE * inData, int inSize, LPCSTR inFileName = NULL, LPCSTR outFileName = NULL)

{
    // 准备原始数据
    DWORD cbOrgData = 0;
    BYTE* pbOrgData = NULL;
    prepareData(inData, inSize, inFileName, pbOrgData, cbOrgData);

    // 注意：
    // 原始数据是二进制值，应使用原值，以避免转换为宽字符串参数时导致失真。
    // SysAllocStringByteLen 会禁用多字节到宽字节的转换，因而可以保证内容无损地转换为宽字符串。
    _bstr_t orgStr;
    BSTR orgBStr = SysAllocStringByteLen((LPCSTR)pbOrgData, cbOrgData);
    orgStr.Assign(orgBStr);
    SysFreeString(orgBStr);
    if(pbOrgData != NULL) delete [] pbOrgData;

    // 创建 Utilities 对象
    IUtilitiesPtr pUtils(__uuidof(Utilities));
    try

{
        // 编码
        _bstr_t encStr = pUtils->Base64Encode(orgStr);

        // 输出
        // 注意：编码输出转换为多字节不会导致失真，直接转换。
        char* pEncStr = encStr;
        printf("[%s]\n", pEncStr);
        if(outFileName != NULL)

{
            writeFile(outFileName, (BYTE*)pEncStr, strlen(pEncStr));
        }
    }
    catch(_com_error e)

{
        // 转换宽字符错误信息为多字节错误信息串
        _bstr_t strErrMesg(e.ErrorMessage());
        printf("[%#x]:COM:%s.\n", e.Error(), (char*)strErrMesg);
    }
    catch (HRESULT errCode)

{
        _tprintf(_T("[%#x]:CAPICOM error. \n"), errCode);
    }
    catch(

)

{
        _tprintf(_T("Unknown error. \n"));
    }

    // 清理
    pUtils.Release();
}

// BASE64解码
void Base64Decode(BYTE * inData, int inSize, LPCSTR inFileName = NULL, LPCSTR outFileName = NULL)

{
    // 准备编码数据
    DWORD cbEncData = 0;
    BYTE* pbEncData = NULL;
    prepareData(inData, inSize, inFileName, pbEncData, cbEncData);

    // 创建 Utilities 对象
    IUtilitiesPtr pUtils(__uuidof(Utilities));
    try

{
        // 解码
        // 注意：编码数据转换为宽字符参数不会导致失真，因此直接转换。
        _bstr_t orgStr = pUtils->Base64Decode((char*)pbEncData);

        // 从解码输出的宽字符串中获取原始数据
        DWORD cbOrgData = 0;
        BYTE* pbOrgData = NULL;
        getBSTRByte(orgStr.GetBSTR(), pbOrgData, cbOrgData);

        // 输出
        showData(pbOrgData, cbOrgData);
        if(outFileName != NULL)

{
            writeFile(outFileName, pbOrgData, cbOrgData);
        }
    }
    catch(_com_error e)

{
        _tprintf(_T("[%#x]:CAPICOM error. \n"), errCode);
    }
    catch(

)

{
        _tprintf(_T("Unknown error. \n"));
    }

    // 清理
    if(pbEncData != NULL) delete [] pbEncData;
    pUtils.Release();
}

// =========================================================
// 数字摘要
// =========================================================

// SHA1
void hashSHA1(BYTE * inData, int inSize, LPCSTR inFileName = NULL, LPCSTR outFileName = NULL)

{
    // 准备原始数据
    DWORD cbOrgData = 0;
    BYTE* pbOrgData = NULL;
    prepareData(inData, inSize, inFileName, pbOrgData, cbOrgData);

    _bstr_t orgStr;
    BSTR orgBStr = SysAllocStringByteLen((LPCSTR)pbOrgData, cbOrgData);
    orgStr.Assign(orgBStr);
    SysFreeString(orgBStr);
    if(pbOrgData != NULL) delete [] pbOrgData;

    // 创建 HashData 对象
    IHashedDataPtr pHash(__uuidof(HashedData));
    try

{
        // 计算数字摘要
        pHash->Algorithm = CAPICOM_HASH_ALGORITHM_SHA1;
        pHash->Hash(orgStr);

        _bstr_t outStr = pHash->Value;
        const char* encStr = (char*) outStr;
        printf("%s\n", encStr);
        if(outFileName != NULL)

{
            writeFile(outFileName, (BYTE*)encStr, strlen(encStr));
        }
    }
    catch(_com_error e)

{
        // 转换宽字符错误信息为多字节错误信息串
        _bstr_t strErrMesg(e.ErrorMessage());
        printf("[%#x]:COM:%s.\n", e.Error(), (char*)strErrMesg);
    }
    catch (HRESULT hr)

{
        _tprintf(_T("[%#x]:CAPICOM error. \n"), hr);
    }
    catch(

)

{
        _tprintf(_T("Unknown error. \n"));
    }

    // 清理
    pHash.Release();
}

// ===============================================================
// 对称加密
//      CAPICOM 加密使用非PKCS#7标准的格式，只能使用 CAPICOM 解密。
// ===============================================================

// DES 加密
void DESEncrypt(BYTE * key, BYTE * inData, int inSize, LPCSTR inFileName = NULL, LPCSTR outFileName = NULL)

{
    // 准备原始数据
    DWORD cbOrgData = 0;
    BYTE* pbOrgData = NULL;
    prepareData(inData, inSize, inFileName, pbOrgData, cbOrgData);

    // 转换为宽字符串参数
    _bstr_t orgStr;
    BSTR orgBStr = SysAllocStringByteLen((LPCSTR)pbOrgData, cbOrgData);
    orgStr.Assign(orgBStr);
    SysFreeString(orgBStr);
    if(pbOrgData != NULL) delete [] pbOrgData;

    // 创建加密对象
    IEncryptedDataPtr pEncryptedData(__uuidof(EncryptedData));
    try

{
        // 加密
        pEncryptedData->Content = orgStr;
        pEncryptedData->SetSecret((char*)key, CAPICOM_SECRET_PASSWORD);
        pEncryptedData->Algorithm->Name = CAPICOM::CAPICOM_ENCRYPTION_ALGORITHM_DES;
        _bstr_t encStr = pEncryptedData->Encrypt(CAPICOM_ENCODE_BASE64);

        // 输出加密结果
        char* pEncStr = encStr;
        printf("%s", pEncStr);
        if(outFileName != NULL)

{
            writeFile(outFileName, (BYTE*) pEncStr, strlen(pEncStr));
        }
    }
    catch(_com_error e)

{
        _bstr_t strErrMesg(e.ErrorMessage());
        printf("[%#x]:COM:%s.\n", e.Error(), (char*)strErrMesg);
    }
    catch (HRESULT retCode)

{
        _tprintf(_T("[%#x]:CAPICOM error. \n"), retCode);
    }
    catch(

)

{
        _tprintf(_T("Unknown error. \n"));
    }

    // 清理
    pEncryptedData.Release();
}

// DES 解密
void DESDecrypt(BYTE * key, BYTE * inData, int inSize, LPCSTR inFileName = NULL, LPCSTR outFileName = NULL)

{
    // 准备数据
    DWORD cbEncData = 0;
    BYTE* pbEncData = NULL;
    prepareData(inData, inSize, inFileName, pbEncData, cbEncData);

    // 创建加密对象
    IEncryptedDataPtr pEncryptedData(__uuidof(EncryptedData));
    try

{
        // 解密
        pEncryptedData->SetSecret((char*)key, CAPICOM_SECRET_PASSWORD);
        pEncryptedData->Algorithm->Name = CAPICOM::CAPICOM_ENCRYPTION_ALGORITHM_DES;
        pEncryptedData->Decrypt((char*)pbEncData);

        // 获取原始数据
        _bstr_t orgStr = pEncryptedData->Content;
        BYTE* orgData = NULL;
        DWORD orgSize = 0;
        getBSTRByte(orgStr.GetBSTR(), orgData, orgSize);

        showData(orgData, orgSize);
        if(outFileName != NULL)

{
            writeFile(outFileName, orgData, orgSize);
        }
    }
    catch(_com_error e)

{
        _bstr_t strErrMesg(e.ErrorMessage());
        printf("[%#x]:COM:%s.\n", e.Error(), (char*)strErrMesg);
    }
    catch (HRESULT errCode)

{
        _tprintf(_T("[%#x]:CAPICOM error. \n"), errCode);
    }
    catch(

)

{
        _tprintf(_T("Unknown error. \n"));
    }

    // 清理
    if(pbEncData != NULL) delete [] pbEncData;
    pEncryptedData.Release();
}

// DES 加密(bin)
void DESEncryptBin(BYTE * key, BYTE * inData, int inSize, LPCSTR inFileName = NULL, LPCSTR outFileName = NULL)

{
    // 准备原始数据
    DWORD cbOrgData = 0;
    BYTE* pbOrgData = NULL;
    prepareData(inData, inSize, inFileName, pbOrgData, cbOrgData);

    // 转换为宽字符参数
    _bstr_t orgStr;
    BSTR orgBStr = SysAllocStringByteLen((LPCSTR)pbOrgData, cbOrgData);
    orgStr.Assign(orgBStr);
    SysFreeString(orgBStr);
    if(pbOrgData != NULL) delete [] pbOrgData;

    // 创建加密对象
    IEncryptedDataPtr pEncryptedData(__uuidof(EncryptedData));
    try

{
        // 加密
        pEncryptedData->Content = orgStr;
        pEncryptedData->SetSecret((char*)key, CAPICOM_SECRET_PASSWORD);
        pEncryptedData->Algorithm->Name = CAPICOM::CAPICOM_ENCRYPTION_ALGORITHM_DES;
        _bstr_t encStr = pEncryptedData->Encrypt(CAPICOM_ENCODE_BINARY);

        // 获取加密数据
        DWORD cbEncData = 0;
        BYTE* pbEncData = NULL;
        getBSTRByte(encStr.GetBSTR(), pbEncData, cbEncData);

        // 输出
        showData(pbEncData, cbEncData);
        if(outFileName != NULL)

{
            writeFile(outFileName, pbEncData, cbEncData);
        }
    }
    catch(_com_error e)

{
        _bstr_t strErrMesg(e.ErrorMessage());
        printf("[%#x]:COM:%s.\n", e.Error(), (char*)strErrMesg);
    }
    catch (HRESULT retCode)

{
        _tprintf(_T("[%#x]:CAPICOM error. \n"), retCode);
    }
    catch(

)

{
        _tprintf(_T("Unknown error. \n"));
    }

    // 清理
    pEncryptedData.Release();
}

// DES 解密(bin)
void DESDecryptBin(BYTE * key, BYTE * inData, int inSize, LPCSTR inFileName = NULL, LPCSTR outFileName = NULL)

{
    // 准备数据
    DWORD cbEncData = 0;
    BYTE* pbEncData = NULL;
    prepareData(inData, inSize, inFileName, pbEncData, cbEncData);

    // 转换为宽字符参数
    _bstr_t encStr;
    BSTR encBStr = SysAllocStringByteLen((LPCSTR)pbEncData, cbEncData);
    encStr.Assign(encBStr);
    SysFreeString(encBStr);
    if(pbEncData != NULL) delete [] pbEncData;

    // 创建加密对象
    IEncryptedDataPtr pEncryptedData(__uuidof(EncryptedData));
    try

{
        // 解密
        pEncryptedData->SetSecret((char*)key, CAPICOM_SECRET_PASSWORD);
        pEncryptedData->Algorithm->Name = CAPICOM::CAPICOM_ENCRYPTION_ALGORITHM_DES;
        pEncryptedData->Decrypt(encStr);

        // 获取原始数据
        _bstr_t orgStr = pEncryptedData->Content;
        BYTE* orgData = NULL;
        DWORD orgSize = 0;
        getBSTRByte(orgStr.GetBSTR(), orgData, orgSize);

        showData(orgData, orgSize);
        if(outFileName != NULL)

{
            writeFile(outFileName, orgData, orgSize);
        }
    }
    catch(_com_error e)

{
        _bstr_t strErrMesg(e.ErrorMessage());
        printf("[%#x]:COM:%s.\n", e.Error(), (char*)strErrMesg);
    }
    catch (HRESULT errCode)

{
        _tprintf(_T("[%#x]:CAPICOM error. \n"), errCode);
    }
    catch(

)

{
        _tprintf(_T("Unknown error. \n"));
    }

    // 清理
    pEncryptedData.Release();
}

// =========================================================
// 数字证书
// =========================================================

// 显式证书信息
void viewCertInfo(ICertificatePtr pCert)

{
    COleDateTime timeFrom(pCert->ValidFromDate);
    COleDateTime timeTo(pCert->ValidToDate);
    _tprintf(_T("     Subject: %s\n"), pCert->SubjectName.GetBSTR());
    _tprintf(_T("   SubjectCN: %s\n"), pCert->GetInfo(CAPICOM_CERT_INFO_SUBJECT_SIMPLE_NAME).GetBSTR());
    _tprintf(_T("     Issuser: %s\n"), pCert->IssuerName.GetBSTR());
    _tprintf(_T("SerialNumber: %s\n"), pCert->SerialNumber.GetBSTR());
    _tprintf(_T("   ValidDate: %s TO %s \n"), timeFrom.Format(L"%Y-%m-%d %H:%M:%S"), timeTo.Format(L"%Y-%m-%d %H:%M:%S"));

    // Check Certificate
    ICertificateStatusPtr pStatus = pCert->IsValid();
    pStatus->CheckFlag = CAPICOM_CHECK_TIME_VALIDITY;
    _tprintf(_T("  Check-Time: %s\n"), (pStatus->Result) ? L"Yes" : L"NO");
    pStatus->CheckFlag = CAPICOM_CHECK_SIGNATURE_VALIDITY;
    _tprintf(_T("  Check-Sign: %s\n"), (pStatus->Result) ? L"Yes" : L"NO");
    pStatus->CheckFlag = CAPICOM_CHECK_TRUSTED_ROOT;
    _tprintf(_T("    Check-CA: %s\n"), (pStatus->Result) ? L"Yes" : L"NO");
    pStatus->CheckFlag =  CAPICOM_CHECK_COMPLETE_CHAIN;
    _tprintf(_T(" Check-Chain: %s\n"), (pStatus->Result) ? L"Yes" : L"NO");
}

// 系统证书库
void viewSystemCertStore(LPCTSTR sCertName)

{
    // 创建证书库对象
    IStorePtr pStore(__uuidof(Store));
    try

{
        HRESULT retCode = pStore->Open(CAPICOM_CURRENT_USER_STORE, sCertName, CAPICOM_STORE_OPEN_READ_ONLY);
        if(FAILED(retCode))

{
            CancelByError(retCode, _T("Can not open certStore! "));
        }

        ICertificatesPtr pCerts = pStore->GetCertificates();
        if(pCerts != NULL)

{
            _tprintf(_T("======== L I S T  C E R T  I N  S T O R E ============\n"));
            for(int ii=0; ii<pCerts->Count; ii++)

{
                _variant_t p = pCerts->GetItem(ii+1);
                ICertificatePtr pCert = p.pdispVal;
                if(pCert != NULL)

{
                    viewCertInfo(pCert);
                    _tprintf(_T("----------------------------------------------------\n"));
                }
            }
            _tprintf(_T("======== %d Certs ============\n"), pCerts->Count);
        }
    }
    catch(_com_error e)

{
        _bstr_t strErrMesg(e.ErrorMessage());
        printf("[%#x]:COM:%s.\n", e.Error(), (char*)strErrMesg);
    }
    catch (HRESULT errCode)

{
        _tprintf(_T("[%#x]:CAPICOM error. \n"), errCode);
    }
    catch(

)

{
        _tprintf(_T("Unknown error. \n"));
    }

    // 清理
    pStore.Release();
}

// 文件证书库(crt/p7b)
void viewCrtCertStore(LPCSTR strCertFileName)

{
    IStore2Ptr pStore(__uuidof(Store));
    try

{
        // 访问证书库
        HRESULT retCode = pStore->Open(CAPICOM_MEMORY_STORE, strCertFileName, CAPICOM_STORE_OPEN_READ_WRITE);
        if(FAILED(retCode))

{
            CancelByError(retCode, _T("Can not open memory certStore! "));
        }

        // 加载证书文件到证书库
        retCode = pStore->Load((char*)strCertFileName, "", CAPICOM_KEY_STORAGE_DEFAULT);
        if(FAILED(retCode))

{
            CancelByError(retCode, _T("Can not load certFile! "));
        }

        // 列出证书
        ICertificatesPtr pCerts = pStore->GetCertificates();
        if(pCerts != NULL)

{
            _tprintf(_T("======== L I S T  C E R T  I N  S T O R E ============\n"));
            for(int ii=0; ii<pCerts->Count; ii++)

{
                _variant_t p = pCerts->GetItem(ii+1);
                ICertificatePtr pCert = p.pdispVal;
                if(pCert != NULL)

{
        _bstr_t strErrMesg(e.ErrorMessage());
        printf("[%#x]:COM:%s.\n", e.Error(), (char*)strErrMesg);
    }
    catch (HRESULT errCode)

{
        _tprintf(_T("[%#x]:CAPICOM error. \n"), errCode);
    }
    catch(

)

{
        _tprintf(_T("Unknown error. \n"));
    }

    // 清理
    pStore.Release();
}

// 文件证书库(pfx)
void viewPfxCertStore(LPCSTR sPfxFileName, LPCSTR sPfxPwd)

{
    // 创建证书对象
    ICertificate2Ptr pCert(__uuidof(Certificate));
    try

{
        HRESULT retCode = pCert->Load(sPfxFileName, sPfxPwd, CAPICOM_KEY_STORAGE_DEFAULT, CAPICOM_CURRENT_USER_KEY);
        if(FAILED(retCode))

{
            CancelByError(retCode, _T("Can not open certStore! "));
        }

        viewCertInfo(pCert);
    }
    catch(_com_error e)

{
        _bstr_t strErrMesg(e.ErrorMessage());
        printf("[%#x]:COM:%s.\n", e.Error(), (char*)strErrMesg);
    }
    catch (HRESULT errCode)

{
        _tprintf(_T("[%#x]:CAPICOM error. \n"), errCode);
    }
    catch(

)

{
        _tprintf(_T("Unknown error. \n"));
    }

    // 清理
    pCert.Release();
}

// =========================================================
// 数字签名
// =========================================================

// 数字签名
void callSignedData(BYTE * inData, int inSize, LPCSTR inFileName = NULL, BOOL bDetached = FALSE, LPCSTR outFileName = NULL)

{
    // 准备原始数据
    DWORD cbOrgData = 0;
    BYTE* pbOrgData = NULL;
    prepareData(inData, inSize, inFileName, pbOrgData, cbOrgData);

    _bstr_t orgStr;
    BSTR orgBStr = SysAllocStringByteLen((LPCSTR)pbOrgData, cbOrgData);
    orgStr.Assign(orgBStr);

    if(pbOrgData != NULL) delete [] pbOrgData;
    SysFreeString(orgBStr);

    // 创建对象
    IStorePtr pStore(__uuidof(Store));                    // 证书库对象
    ISignerPtr pSigner(__uuidof(Signer));                // 签名者对象
    ISignedDataPtr pSignedData(__uuidof(SignedData));    // 签名数据对象

    try

{
        // 设置原始数据
        pSignedData->Content = orgStr;

        // 访问证书库
        HRESULT retCode = pStore->Open(CAPICOM_CURRENT_USER_STORE, CAPICOM_MY_STORE, CAPICOM_STORE_OPEN_READ_ONLY);
        if(FAILED(retCode))

{
            CancelByError(retCode, _T("Can not open certStore! "));
        }

        // 设置签名者证书
        ICertificates2Ptr pSignerCerts = ((ICertificates2Ptr) pStore->Certificates)->Find(CAPICOM_CERTIFICATE_FIND_SUBJECT_NAME, L"lny", FALSE);
        if(pSignerCerts == NULL || pSignerCerts->Count < 1)

{
            CancelByError(0, _T("Can not find signer certificate! "));
        }

        pSigner->Certificate = (ICertificatePtr) pSignerCerts->GetItem(1).pdispVal;
        viewCertInfo(pSigner->Certificate);

        // 签名者签名
        _bstr_t strSignedStr = pSignedData->Sign(pSigner, bDetached, CAPICOM_ENCODE_BASE64);

        /**//* =============== 多签名者签名 ========================================

        ISignerPtr pCoSigner(__uuidof(Signer));                // 协助签名者对象

        // 设置协助签名者证书
        ICertificates2Ptr pCoSignerCerts = ((ICertificates2Ptr) pStore->Certificates)->Find(CAPICOM_CERTIFICATE_FIND_SUBJECT_NAME, L"041@3BNKICNSZXXX@test9@00000001", FALSE);
        if(pCoSignerCerts == NULL || pCoSignerCerts->Count < 1)
        {
            CancelByError(0, _T("Can not find CoSigner certificate! "));
        }

        pCoSigner->Certificate = (ICertificatePtr) pCoSignerCerts->GetItem(1).pdispVal;
        viewCertInfo(pCoSigner->Certificate);

        // 协助签名者签名
        strSignedStr = pSignedData->CoSign(pCoSigner, CAPICOM_ENCODE_BASE64);

        ========================================================================= */

        // 输出
        _tprintf(_T("%s\n"), strSignedStr.GetBSTR());
        char* pOutStr = strSignedStr;
        if(outFileName != NULL)

{
            writeFile(outFileName, (BYTE*)pOutStr, strlen((char*)pOutStr));
        }
    }
    catch(_com_error e)

{
        _bstr_t strErrMesg(e.ErrorMessage());
        printf("[%#x]:COM:%s.\n", e.Error(), (char*)strErrMesg);
    }
    catch (HRESULT errCode)

{
        _tprintf(_T("[%#x]:CAPICOM error. \n"), errCode);
    }
    catch(

)

{
        _tprintf(_T("Unknown error. \n"));
    }

    // 清理
    pStore.Release();
    pSigner.Release();
    pSignedData.Release();
}

// 核验带原文的数字签名
void VerifySignedData(LPCSTR inFileName)

{
    // 准备签名数据
    DWORD cbSigData = 0;
    BYTE* pbSigData = NULL;
    prepareData(NULL, 0, inFileName, pbSigData, cbSigData);

    // 创建签名数据对象
    ISignedDataPtr pSignedData(__uuidof(SignedData));

    try

{
        // 校验数字签名
        HRESULT retCode = pSignedData->Verify((char*)pbSigData, FALSE, CAPICOM_VERIFY_SIGNATURE_ONLY);
        if(FAILED(retCode))

{
            CancelByError(retCode, _T("校验数字签名失败!"));
        }

        // 获取原文
        BYTE* orgStr  = NULL;
        DWORD orgSize = 0;
        getBSTRByte(pSignedData->Content.GetBSTR(), orgStr, orgSize);

        printf("%s\n", orgStr);

        // 显式签名者证书信息
        _tprintf(_T("======== L I S T  C E R T  I N  S T O R E ============\n"));
        for(int ii=0; ii<pSignedData->Certificates->Count; ii++)

{
            viewCertInfo(pSignedData->Certificates->GetItem(ii+1));
            _tprintf(_T("----------------------------------------------------\n"));
        }
        _tprintf(_T("======== %d Certs ============\n"), pSignedData->Certificates->Count);
    }
    catch(_com_error e)

{
        _bstr_t strErrMesg(e.ErrorMessage());
        printf("[%#x]:COM:%s.\n", e.Error(), (char*)strErrMesg);
    }
    catch (HRESULT errCode)

{
        _tprintf(_T("[%#x]:CAPICOM error. \n"), errCode);
    }
    catch(

)

{
        _tprintf(_T("Unknown error. \n"));
    }

    // 清理
    if(pbSigData != NULL) delete [] pbSigData;
    pSignedData.Release();
}

// 核验无原文的数字签名
void VerifyDetachedSignedData(BYTE * inData, int inSize, LPCSTR inFileName, LPCSTR outFileName)

{
    // 准备原始数据
    DWORD cbOrgData = 0;
    BYTE* pbOrgData = NULL;
    prepareData(inData, inSize, inFileName, pbOrgData, cbOrgData);
    BSTR orgBStr = SysAllocStringByteLen((LPCSTR)pbOrgData, cbOrgData);

    // 准备签名数据
    DWORD cbSigData = 0;
    BYTE* pbSigData = NULL;
    prepareData(NULL, 0, outFileName, pbSigData, cbSigData);

    // 创建签名者对象
    ISignerPtr pSigner(__uuidof(Signer));

    // 创建签名数据对象
    ISignedDataPtr pSignedData(__uuidof(SignedData));

    try

{
        // 设置原始数据
        _bstr_t inStr;
        inStr.Assign(orgBStr);
        pSignedData->Content = inStr;

        // 校验数字签名
        HRESULT retCode = pSignedData->Verify((char*)pbSigData, TRUE, CAPICOM_VERIFY_SIGNATURE_ONLY);
        if(FAILED(retCode))

{
            CancelByError(retCode, _T("校验数字签名失败!"));
        }

        // 显式签名者证书信息
        _tprintf(_T("======== L I S T  C E R T  I N  S T O R E ============\n"));
        for(int ii=0; ii<pSignedData->Certificates->Count; ii++)

{
        _tprintf(_T("[%#x]:CAPICOM error. \n"), errCode);
    }
    catch(

)

{
        _tprintf(_T("Unknown error. \n"));
    }

    // 清理
    if(pbOrgData != NULL) delete [] pbOrgData;
    if(pbSigData != NULL) delete [] pbSigData;
    SysFreeString(orgBStr);
    pSigner.Release();
    pSignedData.Release();
}

// =========================================================
// 数字信封（证书加密与解密）
// =========================================================

// 证书加密
void CertEncryptData(BYTE * inData, int inSize, LPCSTR inFileName, LPCSTR outFileName)

{
    // 准备原始数据
    DWORD cbOrgData = 0;
    BYTE* pbOrgData = NULL;
    prepareData(inData, inSize, inFileName, pbOrgData, cbOrgData);
    BSTR orgBStr = SysAllocStringByteLen((LPCSTR)pbOrgData, cbOrgData);

    // 创建证书库对象
    IStorePtr pStore(__uuidof(Store));

    // 创建签名数据对象
    IEnvelopedDataPtr pEnvelopedData(__uuidof(EnvelopedData));

    try

{
        // 设置原始数据
        _bstr_t inStr;
        inStr.Assign(orgBStr);
        pEnvelopedData->Content = inStr;

        // 设置加密算法
        pEnvelopedData->Algorithm->Name = CAPICOM_ENCRYPTION_ALGORITHM_3DES;
        pEnvelopedData->Algorithm->KeyLength = CAPICOM_ENCRYPTION_KEY_LENGTH_MAXIMUM;

        // 设置接收者证书（公钥）

        // 1.访问证书库
        HRESULT retCode = pStore->Open(CAPICOM_CURRENT_USER_STORE, CAPICOM_MY_STORE, CAPICOM_STORE_OPEN_READ_ONLY);
        if(FAILED(retCode))

{
            CancelByError(retCode, _T("Can not open certStore! "));
        }

        // 2.获取接收者证书
        ICertificates2Ptr pReceiverCerts = ((ICertificates2Ptr) pStore->Certificates)->Find(CAPICOM_CERTIFICATE_FIND_SUBJECT_NAME, L"lny", FALSE);
        if(pReceiverCerts == NULL || pReceiverCerts->Count < 1)

{
            CancelByError(0, _T("Can not find receiver certificate! "));
        }
        pEnvelopedData->Recipients->Add((ICertificatePtr) pReceiverCerts->GetItem(1).pdispVal);

        // 证书加密
        _bstr_t strCryptedStr = pEnvelopedData->Encrypt(CAPICOM_ENCODE_BINARY);

        // 获取密文数据
        BSTR  encBStr = strCryptedStr.GetBSTR();
        BYTE* encStr  = NULL;
        DWORD encSize = 0;
        getBSTRByte(encBStr, encStr, encSize);
        SysFreeString(encBStr);

        // 输出
        showData(encStr, encSize);
        if(outFileName != NULL)

{
            writeFile(outFileName, encStr, encSize);
        }
    }
    catch(_com_error e)

{
        _tprintf(_T("[%#x]:CAPICOM error. \n"), errCode);
    }
    catch(

)

{
        _tprintf(_T("Unknown error. \n"));
    }

    // 清理
    if(pbOrgData != NULL) delete [] pbOrgData;
    SysFreeString(orgBStr);
    pStore.Release();
    pEnvelopedData.Release();
}

// 证书解密
void CertDecryptData(LPCSTR inFileName, LPCSTR outFileName)

{
    // 准备原始数据
    DWORD cbOrgData = 0;
    BYTE* pbOrgData = NULL;
    prepareData(NULL, 0, inFileName, pbOrgData, cbOrgData);

    // 创建签名数据对象
    IEnvelopedDataPtr pEnvelopedData(__uuidof(EnvelopedData));

    try

{
        // 证书解密
        HRESULT retCode = pEnvelopedData->Decrypt((char*)pbOrgData);
        if(FAILED(retCode))

{
            CancelByError(retCode, _T("Can not decrypt data! "));
        }

        // 获取原文数据
        BSTR orgBStr  = pEnvelopedData->Content.GetBSTR();
        BYTE* orgStr  = NULL;
        DWORD orgSize = 0;
        getBSTRByte(orgBStr, orgStr, orgSize);
        SysFreeString(orgBStr);

        // 输出
        showData(orgStr, orgSize);
        if(outFileName != NULL)

{
            writeFile(outFileName, orgStr, orgSize);
        }
    }
    catch(_com_error e)

{
        _tprintf(_T("[%#x]:CAPICOM error. \n"), errCode);
    }
    catch(

)

{
        _tprintf(_T("Unknown error. \n"));
    }

    // 清理
    if(pbOrgData != NULL) delete [] pbOrgData;
    pEnvelopedData.Release();
}

int _tmain( int argc, _TCHAR * argv[])

{
    CoInitialize(0);

    // BASE64
//    Base64Encode((BYTE*)"123456789012345678", 15, NULL, "c:\\li.base64");
//    Base64Decode(NULL, 0, "c:\\li.base64", "c:\\li.org");

    // HASH
//    hashSHA1((BYTE*)"1234567890", 10, NULL, "c:\\li.sha1");
//    hashSHA1(NULL, 0, "c:\\li.txt", "c:\\li.sha1");

    // Encrypt & Decrypt
//    DESEncrypt((BYTE*)"12345678", (BYTE*)"1234567890\x00 12345", 15, NULL, "c:\\li.des");
//    DESDecrypt((BYTE*)"12345678", NULL, 0, "c:\\li.des", "c:\\1.org");
//    DESEncryptBin((BYTE*)"12345678", (BYTE*)"123456789012345", 15, NULL, "c:\\li.des");
//    DESDecryptBin((BYTE*)"12345678", NULL, 0, "c:\\li.des", "c:\\1.org");

    // CertStore & Cert
//    viewSystemCertStore(L"MY");                // CAPICOM_MY_STORE
//    viewSystemCertStore(L"CA");                // CAPICOM_CA_STORE
//    viewSystemCertStore(L"ROOT");            // CAPICOM_ROOT_STORE
//    viewSystemCertStore(L"AddressBook");    // CAPICOM_OTHER_STORE

//    viewCrtCertStore("c:\\cfcaT.p7b");
//    viewCrtCertStore("c:\\ca\\certs\\lny.crt");
//    viewPfxCertStore("c:\\ca\\lny.pfx", "welcome2008");

    // TACHED SignData
//    callSignedData((BYTE*)"123456789012345", 15, NULL, FALSE, "c:\\li.tch.sig");
//    VerifySignedData("c:\\li.tch.sig");

    // DETACHED SignData
//    callSignedData((BYTE*)"1234567890", 10, NULL, TRUE, "c:\\li.detch.sig");
//    VerifyDetachedSignedData((BYTE*) "1234567890", 10, NULL, "c:\\li.detch.sig");

    // Cert Encrypt & Decrypt
//    CertEncryptData((BYTE*)"1234567890", 10, NULL, "c:\\li.enc");
//    CertDecryptData("c:\\li.enc", "c:\\li.org");

    CoUninitialize();
    pause();
    return 0;
}

/** */ /**================================================================================
About BSTR

BSTR是"Basic STRing"的简称，是微软在COM/OLE中定义的标准字符串数据类型。
定义在wtypes.h文件中：
typedef wchar_t WCHAR;
typedef WCHAR OLECHAR;
typedef OLECHAR __RPC_FAR * BSTR;

COM字符(wchar_t)使用16bit，因此可以支持各种code pages，包括Unicode。
Windows系统可以简单理解为OLECHAR使用的就是Unicode 。
OLECHAR串与单字节字符串很类似，是一个以NULL(\x0\x0)结尾的buffer。

使用以NULL结尾字符串在COM component间传递不太方便，
因此，标准的BSTR是一个有长度前缀和NULL结束符的OLECHAR数组。
BSTR的前4字节是一个表示字符串长度的前缀，其值是不含NULL的字符串字节数。

BSTR和OLECHAR的交换可以使用COM提供了两个BSTR分配用的API：
SysAllocString / SysReallocString。
函数返回的指针指向BSTR的第一个字符，而不是BSTR在内存的第一个字节，即去掉前缀。

使用BSTR一定要注意释放该对象。SysFreeString()

_bstr_t是C++对BSTR的封装，VC中是为了兼容BSTR类型而增加的，也为实现LPCSTR与BSTR转换。

==================================================

BSTR转换成char*

方法一，使用ConvertBSTRToString。

#pragma comment(lib, 'comsupp.lib')

BSTR bstrText = ::SysAllocString(L"Test");
char* p = _com_util::ConvertBSTRToString(bstrText);
SysFreeString(bstrText); // 用完释放
delete[] lpszText2;

方法二，使用_bstr_t的赋值运算符重载。

_bstr_t b = bstrText;
char* lpszText2 = b;

-------------------------

char*转换成BSTR

方法一，使用SysAllocString等API函数。

BSTR bstrText = ::SysAllocString(L'Test');
BSTR bstrText = ::SysAllocStringLen(L'Test',4);
BSTR bstrText = ::SysAllocStringByteLen('Test',4);

方法二，使用COleVariant或_variant_t。

COleVariant strVar('This is a test');
_variant_t strVar('This is a test');
BSTR bstrText = strVar.bstrVal;

方法三，使用_bstr_t，这是一种最简单的方法。

BSTR bstrText = _bstr_t('This is a test');

方法四，使用CComBSTR。例如：

BSTR bstrText = CComBSTR('This is a test');

或

CComBSTR bstr('This is a test');
BSTR bstrText = bstr.m_str;

方法五，使用ConvertStringToBSTR。例如：

char* lpszText = 'Test';
BSTR bstrText = _com_util::ConvertStringToBSTR(lpszText);

===================================================================================**/

MS CAPICOM Samples

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