(Visual FoxPro) List Microsoft Storage Providers

Gets the Microsoft CNG and legacy CryptoAPI storage providers that exist on the Windows system.

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

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

LOCAL loKeyCon
LOCAL loJson
LOCAL lnSuccess
LOCAL lcName
LOCAL i
LOCAL lnNumStorageContainers

* This example requires Chilkat v9.5.0.83 or greater.

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.KeyContainer')
loKeyCon = CreateObject('Chilkat.KeyContainer')
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.JsonObject')
loJson = CreateObject('Chilkat.JsonObject')
loJson.EmitCompact = 0

lnSuccess = loKeyCon.GetStorageProviders(loJson)
IF (lnSuccess <> 1) THEN
    ? loKeyCon.LastErrorText
    RELEASE loKeyCon
    RELEASE loJson
    CANCEL
ENDIF

? loJson.Emit()

* Sample JSON returned by GetStorageProviders

* {
*   "cng": [
*     "Microsoft Software Key Storage Provider",
*     "Microsoft Passport Key Storage Provider",
*     "Microsoft Platform Crypto Provider",
*     "Microsoft Smart Card Key Storage Provider"
*   ],
*   "legacy": [
*     "Microsoft Base Cryptographic Provider v1.0",
*     "Microsoft Base DSS and Diffie-Hellman Cryptographic Provider",
*     "Microsoft Base DSS Cryptographic Provider",
*     "Microsoft Base Smart Card Crypto Provider",
*     "Microsoft DH SChannel Cryptographic Provider",
*     "Microsoft Enhanced Cryptographic Provider v1.0",
*     "Microsoft Enhanced DSS and Diffie-Hellman Cryptographic Provider",
*     "Microsoft Enhanced RSA and AES Cryptographic Provider",
*     "Microsoft RSA SChannel Cryptographic Provider",
*     "Microsoft Strong Cryptographic Provider"
*   ]
* }

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

* Iterate over the CNG storage containers
i = 0
lnNumStorageContainers = loJson.SizeOfArray("cng")
DO WHILE i < lnNumStorageContainers
    loJson.I = i
    lcName = loJson.StringOf("cng[i]")
    ? lcName
    i = i + 1
ENDDO

? "--"

* Iterate over the legacy CryptoAPI Cryptographic Storage Providers
i = 0
lnNumStorageContainers = loJson.SizeOfArray("legacy")
DO WHILE i < lnNumStorageContainers
    loJson.I = i
    lcName = loJson.StringOf("legacy[i]")
    ? lcName
    i = i + 1
ENDDO

RELEASE loKeyCon
RELEASE loJson