如何以编程方式签署应用程序包（C ++）

了解如何使用SignerSignEx2函数对应用包进行签名。 如果要使用Packaging API以编程方式创建Windows应用商店应用包，则还需要在部署之前对应用包进行签名。Packaging API不提供用于签署应用程序包的专用方法。而是使用标准加密函数来签署您的应用程序包。

你需要知道什么

技术

• 代码签名简介
• Windows应用商店应用的打包，部署和查询
• 密码学功能

先决条件

• 您需要一个打包的Windows应用商店应用。有关创建应用程序包的信息，请参阅如何创建应用程序包。
• 您需要具有适合签署应用程序包的代码签名证书。有关创建测试代码签名证书的信息，请参阅如何创建应用程序包签名证书。将此签名证书加载到CERT_CONTEXT结构中。例如，您可以使用PFXImportCertStore和CertFindCertificateInStore来加载签名证书。
• Windows 8引入了SignerSignEx2功能。在Windows Store应用程序包签名时使用SignerSignEx2。

说明

第1步：为SignerSignEx2定义所需的结构

除了Wincrypt.h头之外，SignerSignEx2函数还依赖于许多SDK头文件中未定义的结构。要使用SignerSignEx2，您必须自己定义这些结构：

C ++复制

typedef struct _SIGNER_FILE_INFO
{
    DWORD cbSize;
    LPCWSTR pwszFileName;
    HANDLE hFile;
}SIGNER_FILE_INFO, *PSIGNER_FILE_INFO;

typedef struct _SIGNER_BLOB_INFO
{
    DWORD cbSize;
    GUID *pGuidSubject;
    DWORD cbBlob;
    BYTE *pbBlob;
    LPCWSTR pwszDisplayName;
}SIGNER_BLOB_INFO, *PSIGNER_BLOB_INFO;

typedef struct _SIGNER_SUBJECT_INFO
{
    DWORD cbSize;
    DWORD *pdwIndex;
    DWORD dwSubjectChoice;
    union
    {
        SIGNER_FILE_INFO *pSignerFileInfo;
        SIGNER_BLOB_INFO *pSignerBlobInfo;
    };
}SIGNER_SUBJECT_INFO, *PSIGNER_SUBJECT_INFO;

// dwSubjectChoice should be one of the following:
#define SIGNER_SUBJECT_FILE    0x01
#define SIGNER_SUBJECT_BLOB    0x02

typedef struct _SIGNER_ATTR_AUTHCODE
{
    DWORD cbSize;
    BOOL fCommercial;
    BOOL fIndividual;
    LPCWSTR pwszName;
    LPCWSTR pwszInfo;
}SIGNER_ATTR_AUTHCODE, *PSIGNER_ATTR_AUTHCODE;

typedef struct _SIGNER_SIGNATURE_INFO
{
    DWORD cbSize;
    ALG_ID algidHash;
    DWORD dwAttrChoice;
    union
    {
        SIGNER_ATTR_AUTHCODE *pAttrAuthcode;
    };
    PCRYPT_ATTRIBUTES psAuthenticated;
    PCRYPT_ATTRIBUTES psUnauthenticated;
}SIGNER_SIGNATURE_INFO, *PSIGNER_SIGNATURE_INFO;

// dwAttrChoice should be one of the following:
#define SIGNER_NO_ATTR          0x00
#define SIGNER_AUTHCODE_ATTR    0x01

typedef struct _SIGNER_PROVIDER_INFO
{
    DWORD cbSize;
    LPCWSTR pwszProviderName;
    DWORD dwProviderType;
    DWORD dwKeySpec;
    DWORD dwPvkChoice;
    union
    {
        LPWSTR pwszPvkFileName;
        LPWSTR pwszKeyContainer;
    };
}SIGNER_PROVIDER_INFO, *PSIGNER_PROVIDER_INFO;

//dwPvkChoice should be one of the following:
#define PVK_TYPE_FILE_NAME       0x01
#define PVK_TYPE_KEYCONTAINER    0x02

typedef struct _SIGNER_SPC_CHAIN_INFO
{
    DWORD cbSize;
    LPCWSTR pwszSpcFile;
    DWORD dwCertPolicy;
    HCERTSTORE hCertStore;
}SIGNER_SPC_CHAIN_INFO, *PSIGNER_SPC_CHAIN_INFO;

typedef struct _SIGNER_CERT_STORE_INFO
{
    DWORD cbSize;
    PCCERT_CONTEXT pSigningCert;
    DWORD dwCertPolicy;
    HCERTSTORE hCertStore;
}SIGNER_CERT_STORE_INFO, *PSIGNER_CERT_STORE_INFO;

//dwCertPolicy can be a combination of the following flags:
#define SIGNER_CERT_POLICY_STORE            0x01
#define SIGNER_CERT_POLICY_CHAIN            0x02
#define SIGNER_CERT_POLICY_SPC              0x04
#define SIGNER_CERT_POLICY_CHAIN_NO_ROOT    0x08

typedef struct _SIGNER_CERT
{
    DWORD cbSize;
    DWORD dwCertChoice;
    union
    {
        LPCWSTR pwszSpcFile;
        SIGNER_CERT_STORE_INFO *pCertStoreInfo;
        SIGNER_SPC_CHAIN_INFO *pSpcChainInfo;
    };
    HWND hwnd;
}SIGNER_CERT, *PSIGNER_CERT;

//dwCertChoice should be one of the following
#define SIGNER_CERT_SPC_FILE     0x01
#define SIGNER_CERT_STORE        0x02
#define SIGNER_CERT_SPC_CHAIN    0x03

typedef struct _SIGNER_CONTEXT
{
    DWORD cbSize;
    DWORD cbBlob;
    BYTE *pbBlob;
}SIGNER_CONTEXT, *PSIGNER_CONTEXT;

typedef struct _SIGNER_SIGN_EX2_PARAMS
{
    DWORD dwFlags;
    PSIGNER_SUBJECT_INFO pSubjectInfo;
    PSIGNER_CERT pSigningCert;
    PSIGNER_SIGNATURE_INFO pSignatureInfo;
    PSIGNER_PROVIDER_INFO pProviderInfo;
    DWORD dwTimestampFlags;
    PCSTR pszAlgorithmOid;
    PCWSTR pwszTimestampURL;
    PCRYPT_ATTRIBUTES pCryptAttrs;
    PVOID pSipData;
    PSIGNER_CONTEXT *pSignerContext;
    PVOID pCryptoPolicy;
    PVOID pReserved;
} SIGNER_SIGN_EX2_PARAMS, *PSIGNER_SIGN_EX2_PARAMS;

typedef struct _APPX_SIP_CLIENT_DATA
{
    PSIGNER_SIGN_EX2_PARAMS pSignerParams;
    IUnknown* pAppxSipState;
} APPX_SIP_CLIENT_DATA, *PAPPX_SIP_CLIENT_DATA;

第2步：调用SignerSignEx2签署应用程序包

定义上一步中指定的所需结构后，可以使用SignerSignEx2函数上的任何可用选项对应用程序包进行签名。将SignerSignEx2与Windows Store应用程序包一起使用时，这些限制适用：

• 在签署应用程序包时，必须提供指向APPX_SIP_CLIENT_DATA结构的指针作为pSipData参数。您必须填充pSignerParams成员APPX_SIP_CLIENT_DATA与您用来签署应用程序包相同的参数。为此，在SIGNER_SIGN_EX2_PARAMS结构上定义所需的参数，将此结构的地址分配给pSignerParams，然后在调用SignerSignEx2时直接引用结构的成员。
• 你打电话后SignerSignEx2，你必须释放pAppxSipState上pSipData通过调用的IUnknown ::发布上pAppxSipState如果它不是空。
• SIGNER_SIGNATURE_INFO结构的algidHash成员必须与创建应用程序包时使用的哈希算法相同。有关如何从应用程序包中确定哈希算法的信息，请参阅如何使用SignTool对应用程序包进行签名。MakeAppx和Visual Studio用于创建应用程序包的Windows 8默认算法是“algidHash = CALG_SHA_256”。
• 如果您还要在应用程序包上标记签名，则必须通过提供SignerSignEx2的可选时间戳参数（dwTimestampFlags，pszTimestampAlgorithmOid，pwszHttpTimeStamp，psRequest）在调用SignerSignEx2期间执行此操作。不支持在已签名的应用程序包上调用SignerTimeStampEx3或其变体。

下面是一些示例代码，演示如何调用SignerSignEx2：

C ++复制

HRESULT SignAppxPackage(
    _In_ PCCERT_CONTEXT signingCertContext,
    _In_ LPCWSTR packageFilePath)
{
    HRESULT hr = S_OK;

    // Initialize the parameters for SignerSignEx2
    DWORD signerIndex = 0;

    SIGNER_FILE_INFO fileInfo = {};
    fileInfo.cbSize = sizeof(SIGNER_FILE_INFO);
    fileInfo.pwszFileName = packageFilePath;

    SIGNER_SUBJECT_INFO subjectInfo = {};
    subjectInfo.cbSize = sizeof(SIGNER_SUBJECT_INFO);
    subjectInfo.pdwIndex = &signerIndex;
    subjectInfo.dwSubjectChoice = SIGNER_SUBJECT_FILE;
    subjectInfo.pSignerFileInfo = &fileInfo;

    SIGNER_CERT_STORE_INFO certStoreInfo = {};
    certStoreInfo.cbSize = sizeof(SIGNER_CERT_STORE_INFO);
    certStoreInfo.dwCertPolicy = SIGNER_CERT_POLICY_CHAIN_NO_ROOT;
    certStoreInfo.pSigningCert = signingCertContext;

    SIGNER_CERT cert = {};
    cert.cbSize = sizeof(SIGNER_CERT);
    cert.dwCertChoice = SIGNER_CERT_STORE;
    cert.pCertStoreInfo = &certStoreInfo;

    // The algidHash of the signature to be created must match the
    // hash algorithm used to create the app package
    SIGNER_SIGNATURE_INFO signatureInfo = {};
    signatureInfo.cbSize = sizeof(SIGNER_SIGNATURE_INFO);
    signatureInfo.algidHash = CALG_SHA_256;
    signatureInfo.dwAttrChoice = SIGNER_NO_ATTR;

    SIGNER_SIGN_EX2_PARAMS signerParams = {};
    signerParams.pSubjectInfo = &subjectInfo;
    signerParams.pSigningCert = &cert;
    signerParams.pSignatureInfo = &signatureInfo;

    APPX_SIP_CLIENT_DATA sipClientData = {};
    sipClientData.pSignerParams = &signerParams;
    signerParams.pSipData = &sipClientData;

    // Type definition for invoking SignerSignEx2 via GetProcAddress
    typedef HRESULT (WINAPI *SignerSignEx2Function)(
        DWORD,
        PSIGNER_SUBJECT_INFO,
        PSIGNER_CERT,
        PSIGNER_SIGNATURE_INFO,
        PSIGNER_PROVIDER_INFO,
        DWORD,
        PCSTR,
        PCWSTR,
        PCRYPT_ATTRIBUTES,
        PVOID,
        PSIGNER_CONTEXT *,
        PVOID,
        PVOID); 

    // Load the SignerSignEx2 function from MSSign32.dll
    HMODULE msSignModule = LoadLibraryEx(
        L"MSSign32.dll",
        NULL,
        LOAD_LIBRARY_SEARCH_SYSTEM32);

    if (msSignModule)
    {
        SignerSignEx2Function SignerSignEx2 = reinterpret_cast<SignerSignEx2Function>(
            GetProcAddress(msSignModule, "SignerSignEx2"));
        if (SignerSignEx2)
        {
            hr = SignerSignEx2(
                signerParams.dwFlags,
                signerParams.pSubjectInfo,
                signerParams.pSigningCert,
                signerParams.pSignatureInfo,
                signerParams.pProviderInfo,
                signerParams.dwTimestampFlags,
                signerParams.pszAlgorithmOid,
                signerParams.pwszTimestampURL,
                signerParams.pCryptAttrs,
                signerParams.pSipData,
                signerParams.pSignerContext,
                signerParams.pCryptoPolicy,
                signerParams.pReserved);
        }
        else
        {
            DWORD lastError = GetLastError();
            hr = HRESULT_FROM_WIN32(lastError);
        }

        FreeLibrary(msSignModule);
    }
    else
    {
        DWORD lastError = GetLastError();
        hr = HRESULT_FROM_WIN32(lastError);
    }

    // Free any state used during app package signing
    if (sipClientData.pAppxSipState)
    {
        sipClientData.pAppxSipState->Release();
    }

    return hr;
}

备注

签署应用程序包后，您还可以尝试使用WINVUST_ACTION_GENERIC_VERIFY_V2的WinVerifyTrust函数以编程方式验证签名。对于在Windows Store应用程序包中使用WinVerifyTrust，在这种情况下没有特别注意事项。