Lianja

HMAC Hex String

See more Encryption Examples

Demonstrates how to compute an HMAC using a hexidecimal key and data. Lianja

llSuccess = .F.

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

loCrypt = createobject("CkCrypt2")

// Set the MAC algorithm to HMAC
loCrypt.MacAlgorithm = "hmac"

// Our HMAC key will be the bytes represented in the following hex string.
// In other words, the HMAC key is composed of the bytes 0x41, 0xC2, 0x1C, ...
// (It is not composed of the us-ascii string '4', '1', 'C', ...)
lcKeyHex = "41C21CB9D7A02FC5D4FADB9E4755B9DE"
llSuccess = loCrypt.SetMacKeyEncoded(lcKeyHex,"hex")

// Our desire is to HMAC the bytes represented in the following string:
lcDataHex = "C22078065B01460001000000010062043BF5B18228C8E02D17BCFE4E00561FA6DEC216EA97195CEB579942E275C21932258E3CD391E507FF4E7FD4C787A8447DA111C54A9C1795E7FF4C0BAA2EDA"

// We'll need to decode the hex to binary:
loBd = createobject("CkBinData")
loBd.AppendEncoded(lcDataHex,"hex")

// Do the HMAC-SHA256 hash and return as a hex string:
loCrypt.EncodingMode = "hex"
loCrypt.HashAlgorithm = "sha-256"
lcMacHex = loCrypt.MacBdENC(loBd)
? lcMacHex


release loCrypt
release loBd