Sorry but my VFP is getting rustier by the day but, as stated, it should be simply a matter of a few judicious STRTOFILE() and FILETOSTR() lines. Don't know which bit you can't do but (top of my head) the encrypt would be something like:
TempPath = "C:\Test.req"
StringToEncrypt = "SomeThing"
STRTOFILE("",TempPath)
xx = CREATEOBJECT("EncryptionManager")
s = xx.EncrptThirdPartyMessage(TempPath,StringToEncrypt)
STRTOFILE(s,TempPath)
Decrypt pretty much the same principle but maybe using ALINES() and processing each line. Someone still active in VFP should be able to straighten me out if that's wrong.......
>Thanks Viv;
>The steps you listed, is what I need the help with.
>
>Cyrus
>
>>Hi,
>>Most of the C# code is just for creating, reading and writing to files. Should be simple in VFP:
>>
>>Encrypting:
>>1. Create a file with the *.req extension in the required folder.
>>2. Create an instance of the EncryptionManager.
>>3. Call its EncryptThirdPartyMessage() method passing in the name of the created file (including the full path) and the string to encrypt
>>4. Write the return value to the file.
>>5. Copy the file to the output location.
>>
>>Decrypting (looks as if the input file can contain multiple strings?):
>>1. Create a file to hold the output.
>>2. Open the input file
>>3. For each line in the input file
>> (a) Call DecryptThirdPartyMessage() passing in the fullname of the input file and the line string
>> (b) Write the returned string to the output file.....
>>
>>AFAICS the only reason for passing the filenames to the EncryptionManager methods is that it uses the
>>file timestamp for something ?
>>All the file stuff can probably be done with STRTOFILE() and FILETOSTR()
>>
>>
>>
>>
>>>Thanks Michael; Here it is:
>>>________________________________________________________________________________________________
>>>TO ENCRYPT THE STRING:
>>>
>>>(Sample code is written in C#.Net)
>>>
>>>// File name format that ICVERIFY understand for request processing
>>>string csFileName = "\\icver001.req";
>>>// Shared directory path where file is being created.
>>>string txtSharedDirPath = "C:\\Shared Directory";
>>>string csSharedDirPath = txtSharedDirPath + csFileName;
>>>/*
>>>// Request directory path where file will be used by
>>>// ICVERIFY for transaction processing.
>>>*/
>>>string txtReqPath = "C:\\Request Directory";
>>>string csReqPreparationPath = txtReqPath + csFileName;
>>>// Object of StreamWriter
>>>StreamWriter objWriter = null;
>>>// This code is creating an empty file in shared directory path
>>>FileStream objFileStream = new FileStream(csSharedDirPath, FileMode.Create, FileAccess.Write);
>>>objWriter = new StreamWriter(objFileStream);
>>>/*
>>>// To call EncryptionManager.dll to encrypt string
>>>// EncryptionManager.dll will use the creation date of the
>>>// file that was being created in shared directory path.
>>>*/
>>>string csStringToEncrypt = "Some string";
>>>EncryptionManager objEncryptionManager = new EncryptionManager();
>>>string csEncryptedString = objEncryptionManager.EncryptThirdPartyMessage(csSharedDirPath, csStringToEncrypt);
>>>// To write the encrypted string in the file
>>>objWriter.WriteLine(csEncryptedString);
>>>if (objWriter != null)
>>> objWriter.Close();
>>>/*
>>>// Once all the encrypt strings have been written in file,
>>>// move that file into the request directory for processing.
>>>*/
>>>File.Move(csSharedDirPath, csReqPreparationPath);
>>>________________________________________________________________________________________________
>>>
>>>TO DECRYPT THE STRING:
>>>
>>>(Sample code is written in C#.Net)
>>>// File name that need to be decrypted
>>>string csFileName = "\\icver001.ans";
>>>// Shared directory path where decrypted file will be created.
>>>string txtSharedDirPath = "C:\\Shared Directory";
>>>string csSharedDirPath = txtSharedDirPath + csFileName;
>>> /*
>>>// Request directory path where file that needs to be
>>>// decrypted is present.
>>>*/
>>>string txtReqPath = "C:\\Request Directory";
>>>string csReqPreparationPath = txtReqPath+ csFileName;
>>>// object of StreamWriter
>>>StreamWriter objWriter = null;
>>>// This code is creating an empty file in shared directory path
>>>FileStream objFileWriteStream = new FileStream(csSharedDirPath, FileMode.Create, FileAccess.Write);
>>>objWriter = new StreamWriter(objFileWriteStream);
>>>StreamReader objReader = null;
>>>FileStream objFileReadStream = new FileStream(csReqPreparationPath, FileMode.Open, FileAccess.Read);
>>>objReader = new StreamReader(objFileReadStream);
>>>/*
>>>// To call EncryptionManager.dll to decrypt string
>>>// EncryptionManager.dll will use the creation date of the
>>>// file that was being created in Request directory path.
>>> */
>>>EncryptionManager objEncryptionManager = new EncryptionManager();
>>>string strDecString = "";
>>>string strEncString = "";
>>>while (((strEncString = objReader.ReadLine()) != null))
>>>{
>>>strDecString = objEncryptionManager.DecryptThirdPartyMessage(csReqPreparationPath, strEncString);
>>>objWriter.WriteLine(strDecString);
>>>}
>>>if (objReader != null)
>>>objReader.Close();
>>>if (objWriter != null)
>>>objWriter.Close();
>>>________________________________________________________________________________________________
>>>
>>>And they had me run the following to register the DLLs in Windows Command Prompt:
>>>C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\IcvGacUtil /i C:\ICVERIFY\ICWin403\SecurityService.dll
>>>C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\RegAsm C:\ICVERIFY\ICWin403\SecurityService.dll /tlb
>>>C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\IcvGacUtil /i C:\ICVERIFY\ICWin403\EncryptionManager.dll
>>>C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\RegAsm C:\ICVERIFY\ICWin403\EncryptionManager.dll /tlb
>>>________________________________________________________________________________________________
>>>
>>>Pease let me know the cost, so you can just put it on my card.
>>>Thanks
>>>Cyrus
>>>
>>>
>>>>>I am trying to use an External DLL (supplied by a Payment Transaction company ICVerify) to
>>>>>
>>>>>a) convert a String Variable into an encrypted file, and then
>>>>>b) Decrypt the File into a String variable.
>>>>>
>>>>>They don't have a VFP sample code, but they have supplied Sample Code in C#.
>>>>>It is about 5 to 10 commands. I need to have the C# code translated into VFP code and then some help in getting it to run.
>>>>>
>>>>>Please let me know asap.
>>>>
>>>>Could you simply paste the code in here?
