Visual Basic 6.0

HMAC with SHA256

See more Encryption Examples

Demonstrates how to compute a HMAC SHA256 keyed-hash message authentication code. Visual Basic 6.0

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

Dim crypt As New ChilkatCrypt2

' The output will be Hex, so set the EncodingMode:
crypt.EncodingMode = "hex"

' Set the hash algorithm:
' Choices are: md5, sha-1, sha256, sha384, sha512, md2, haval
crypt.HashAlgorithm = "sha256"
crypt.MacAlgorithm = "hmac"

Dim mac As String

' Set the HMAC key:
success = crypt.SetMacKeyEncoded("The_API_Secret","ascii")
mac = crypt.MacStringENC("The quick brown fox jumps over the lazy dog")
Debug.Print mac