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(DataFlex) List Keys in a Microsoft Storage Provider

Demonstrates how to list the keys found in a Microsoft CNG Storage Provider, or a Legacy CryptoAPI Storage Provider.

Important: This example requires Chilkat v9.5.0.83 or greater.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-9.5.0-win32.pkg

Procedure Test
    Handle hoKeyCon
    Variant vJson
    Handle hoJson
    Boolean iSuccess
    String sName
    Boolean iMachineKey
    String sAlgId
    String sProvType
    String sStorageProvider
    Integer i
    Integer iCount_i
    String sTemp1
    Boolean bTemp1

    // This example requires Chilkat v9.5.0.83 or greater.

    Get Create (RefClass(cComChilkatKeyContainer)) To hoKeyCon
    If (Not(IsComObjectCreated(hoKeyCon))) Begin
        Send CreateComObject of hoKeyCon
    End
    Get Create (RefClass(cComChilkatJsonObject)) To hoJson
    If (Not(IsComObjectCreated(hoJson))) Begin
        Send CreateComObject of hoJson
    End
    Set ComEmitCompact Of hoJson To False

    Get pvComObject of hoJson to vJson
    Get ComGetKeys Of hoKeyCon "Microsoft Software Key Storage Provider" vJson To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoKeyCon To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComEmit Of hoJson To sTemp1
    Showln sTemp1

    // Sample JSON returned by GetKeys

    // If the storage provider is CNG, then each key has an "algId".
    // If the storage provider is legacy CryptoAPI, then each key has a "provType" (see below)

    // If the storage provider is CNG:
    // {
    //   "storageProvider": "Microsoft Software Key Storage Provider",
    //   "key": [
    //     {
    //       "name": "cn=Chilkat Admin,ou=Persona Not Verified,ou=For Test Purposes Only Decryption Key",
    //       "machineKey": false,
    //       "algId": "ECDH_P384"
    //     },
    //     {
    //       "name": "CD1CC265-0DA0-4230-8419-CB6F808FE688",
    //       "machineKey": false,
    //       "algId": "SP800_108_CTR_HMAC"
    //     },
    //     {
    //       "name": "{FF14487C-0AED-471E-8FAD-4BF757C2195C}",
    //       "machineKey": false,
    //       "algId": "ECDH_P256"
    //     },
    //     {
    //       "name": "{869FD9A6-D815-44FD-A916-4D4A708CD949}",
    //       "machineKey": false,
    //       "algId": "ECDH_P256"
    //     },
    //     {
    //       "name": "D530ECA9-FF5A-4A6A-AAB3-6EC1870F2CC3",
    //       "machineKey": false,
    //       "algId": "SP800_108_CTR_HMAC"
    //     },
    //     {
    //       "name": "{F524771E-93C0-4D56-8DE7-2FE3CB5BD837}",
    //       "machineKey": false,
    //       "algId": "RSA"
    //     },
    //     {
    //       "name": "Microsoft Connected Devices Platform device certificate",
    //       "machineKey": false,
    //       "algId": "ECDSA_P256"
    //     }
    //   ]
    // }

    // If the storage provider is legacy CryptoAPI:

    // {
    //   "storageProvider": "Microsoft Base Cryptographic Provider v1.0",
    //   "key": [
    //     {
    //       "name": "{48D7FF88-A52E-41E2-9EBD-0CC7E880DC65}",
    //       "machineKey": false,
    //       "provType": "PROV_RSA_FULL"
    //     },
    //     {
    //       "name": "{CBF7A33A-F9CF-4C30-8A06-94A5C7981058}",
    //       "machineKey": false,
    //       "provType": "PROV_RSA_FULL"
    //     }
    //   ]
    // }

    // Use this online tool to generate parsing code from sample JSON: 
    // Generate Parsing Code from JSON

    Get ComStringOf Of hoJson "storageProvider" To sStorageProvider
    Move 0 To i
    Get ComSizeOfArray Of hoJson "key" To iCount_i
    While (i < iCount_i)
        Set ComI Of hoJson To i
        Get ComStringOf Of hoJson "key[i].name" To sName
        Get ComBoolOf Of hoJson "key[i].machineKey" To iMachineKey
        Get ComHasMember Of hoJson "key[i].algId" To bTemp1
        If (bTemp1 = True) Begin
            Get ComStringOf Of hoJson "key[i].algId" To sAlgId
        End

        Get ComHasMember Of hoJson "key[i].provType" To bTemp1
        If (bTemp1 = True) Begin
            Get ComStringOf Of hoJson "key[i].provType" To sProvType
        End

        Move (i + 1) To i
    Loop



End_Procedure

 

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