HMAC SHA-1 to Match RFC 2022 Test Vectors

Demonstrates using Chilkat in Visual FoxPro to computer HMAC SHA-1 message authentication codes to match the test vectors given by RFC 2202.

Download Chilkat Crypt ActiveX

LOCAL loCrypt
LOCAL lnSuccess
LOCAL lcMac

loCrypt = CreateObject('Chilkat.Crypt2')

*  Any string argument automatically begins the 30-day trial.

lnSuccess = loCrypt.UnlockComponent("30-day trial")
IF (lnSuccess <> 1) THEN
    =MESSAGEBOX("Crypt component unlock failed")
    QUIT
ENDIF

*  The output will be Hex, so set the EncodingMode:
loCrypt.EncodingMode = "hex"

*  Set the hash algorithm:
*  Choices are: md5, sha-1, sha256, sha384, sha512, md2, haval
loCrypt.HashAlgorithm = "sha-1"

*  Set the HMAC key:
loCrypt.SetHmacKeyEncoded("0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b","hex")
lcMac = loCrypt.HmacStringENC("Hi There")
? lcMac

loCrypt.SetHmacKeyEncoded("Jefe","us-ascii")
lcMac = loCrypt.HmacStringENC("what do ya want for nothing?")
? lcMac