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DataFlex Examples

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(DataFlex) Password_Digest = Base64 (SHA-1 ( nonce + created + SHA-1 (password) ) )

Demonstrates how to compute:

Password_Digest = Base64 (SHA-1 ( nonce + created + SHA-1 (password)))

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-9.5.0-win32.pkg

Procedure Test
    String sPassword
    Handle hoCrypt
    Handle hoPrng
    Variant vBd
    Handle hoBd
    Handle hoDt
    String sCreated
    String sPasswordSha1
    String sPasswordDigest

    //  This example requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    Move "secret" To sPassword

    Get Create (RefClass(cComChilkatCrypt2)) To hoCrypt
    If (Not(IsComObjectCreated(hoCrypt))) Begin
        Send CreateComObject of hoCrypt
    End
    Set ComHashAlgorithm Of hoCrypt To "SHA-1"
    Set ComEncodingMode Of hoCrypt To "base64"

    //  Generate a 16-byte random nonce
    Get Create (RefClass(cComChilkatPrng)) To hoPrng
    If (Not(IsComObjectCreated(hoPrng))) Begin
        Send CreateComObject of hoPrng
    End
    Get Create (RefClass(cComChilkatBinData)) To hoBd
    If (Not(IsComObjectCreated(hoBd))) Begin
        Send CreateComObject of hoBd
    End
    Get pvComObject of hoBd to vBd
    Get ComGenRandomBd Of hoPrng 16 vBd To iSuccess

    //  Get the current date/time in a string with this format: 2010-06-08T07:26:50Z
    Get Create (RefClass(cComCkDateTime)) To hoDt
    If (Not(IsComObjectCreated(hoDt))) Begin
        Send CreateComObject of hoDt
    End
    Get ComSetFromCurrentSystemTime Of hoDt To iSuccess
    Get ComGetAsTimestamp Of hoDt False To sCreated
    Get ComAppendString Of hoBd sCreated "utf-8" To iSuccess

    //  This example wishes to calculate a password digest like this:
    //  Password_Digest = Base64 ( SHA-1 ( nonce + created + SHA-1(password) ) )

    //  First SHA-1 digest the password...
    Get ComHashStringENC Of hoCrypt sPassword To sPasswordSha1
    //  Append the 20 binary bytes of the SHA1 hash to bd, which already contains the nonce and created date/time.
    Get ComAppendEncoded Of hoBd sPasswordSha1 "base64" To iSuccess

    Get pvComObject of hoBd to vBd
    Get ComHashBdENC Of hoCrypt vBd To sPasswordDigest

    Showln "Base64 password digest = " sPasswordDigest


End_Procedure

 

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