(PowerBuilder) HMAC SHA-1 Matching FIPS Examples

Provides an example of computing an HMAC-SHA1 digest to duplicate the FIPS examples at http://csrc.nist.gov/publications/fips/fips198/fips-198a.pdf

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

integer li_rc
oleobject loo_Crypt
string ls_StrToSign
string ls_Key
string ls_ExpectedResult
string ls_Mac

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

loo_Crypt = create oleobject
// Use "Chilkat_9_5_0.Crypt2" for versions of Chilkat < 10.0.0
li_rc = loo_Crypt.ConnectToNewObject("Chilkat.Crypt2")
if li_rc < 0 then
    destroy loo_Crypt
    MessageBox("Error","Connecting to COM object failed")
    return
end if

ls_StrToSign = "Sample #1"

// 64-byte key
ls_Key = "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f"

// The expected result:
// (from Appendix A.1 at http://csrc.nist.gov/publications/fips/fips198/fips-198a.pdf )
ls_ExpectedResult = "4f4ca3d5d68ba7cc0a1208c9c61e9c5da0403c0a"

// Here is the code to duplicate the results:
loo_Crypt.HashAlgorithm = "sha-1"
loo_Crypt.EncodingMode = "hex"

loo_Crypt.SetHmacKeyEncoded(ls_Key,"hex")

ls_Mac = loo_Crypt.HmacStringENC(ls_StrToSign)

Write-Debug "Computed: " + ls_Mac
Write-Debug "Expected: " + ls_ExpectedResult


destroy loo_Crypt