CryptoSys PKI Examples VB6 to VB.NET

This is a conversion of most of the VB6 examples in the CryptoSys PKI manual to VB.NET (a.k.a. Visual Basic 2005/8/x). The translations are pretty literal, so we've left in many lines that could be left out or re-worded more appropriately. This is deliberate so you can better see how the translation is done. Lines in VB.NET deliberately commented out begin with two apostrophes ('').

Note that these examples are meant to show the basic operation of each primitive cryptographic function, using known test vectors wherever possible. They are not meant to show how to use the primitive functions as part of a proper cryptosystem. If you don't understand what this means, you probably shouldn't be using this library.

Download the original source code plus the complete HTML file (103 kB). This includes all the required test files, the original VB6 tests, the new VB.NET examples, and a conversion of the VB.NET code to C#. The .NET code is for a command-line "Console Application" project.

This document last updated 30 June 2010

Contents

Important points when converting VB6 code to VB.NET

Cipher

CIPHER_Bytes | CIPHER_File | CIPHER_Hex | CIPHER_KeyUnwrap | CIPHER_KeyWrap

CMS

CMS_GetSigDataDigest | CMS_GetSigDataDigest_2 | CMS_MakeDetachedSig | CMS_MakeEnvData | CMS_MakeEnvDataFromString | CMS_MakeEnvData_2 | CMS_MakeEnvData_3 | CMS_MakeSigData | CMS_MakeSigDataFromSigValue | CMS_MakeSigData_2 | CMS_ReadEnvData | CMS_ReadEnvDataToString | CMS_ReadSigData | CMS_ReadSigDataToString | CMS_VerifySigData

CNV

CNV_CheckUTF8

Hash

HASH_Bytes | HASH_File | HASH_HexFromBytes | HASH_HexFromFile | HASH_HexFromHex | HASH_HexFromString

HMAC

HMAC_Bytes | HMAC_HexFromBytes | HMAC_HexFromHex

OCSP

OCSP_MakeRequest | OCSP_ReadResponse

PEM

PEM_FileFromBinFile | PEM_FileToBinFile

PFX

PFX_MakeFile | PFX_MakeFile_2

General

PKI_CompileTime | PKI_ErrorLookup | PKI_LicenceType | PKI_ModuleName | PKI_PowerUpTests | PKI_Version | PWD_PromptEx

RNG

RNG_Bytes | RNG_BytesWithPrompt | RNG_Initialize | RNG_Number | RNG_Test

RSA

RSA_DecodeMsg | RSA_EncodeMsg | RSA_FromXMLString | RSA_FromXMLString_2 | RSA_GetPublicKeyFromCert | RSA_KeyMatch | RSA_MakeKeys | RSA_RawPrivate | RSA_ReadPrivateKeyInfo | RSA_SaveEncPrivateKey | RSA_SavePrivateKeyInfo | RSA_ToXMLString

Triple DES

TDEA_B64Mode | TDEA_BytesMode | TDEA_File | TDEA_HexMode

Wipe

WIPE_File

X509

X509_CertExpiresOn | X509_CertIsValidNow | X509_CertRequest | X509_CertRequest_2 | X509_CertSerialNumber | X509_CertSubjectName | X509_CertThumb | X509_CheckCertInCRL | X509_GetCertFromP7Chain | X509_HashIssuerAndSN | X509_KeyUsageFlags | X509_MakeCRL | X509_MakeCert | X509_MakeCertSelf | X509_MakeCertSelf_2 | X509_TextDump | X509_ValidatePath | X509_VerifyCert