(PureBasic) Demonstrates HMAC SHA256

Demonstrates HMAC-SHA256. Also demonstrates HMAC-SHA1 and HMAC-MD5.

Chilkat PureBasic Module Download Chilkat PureBasic Module

IncludeFile "CkCrypt2.pb"

Procedure ChilkatExample()

    ; This example assumes Chilkat Crypt2 to have been previously unlocked.
    ; See Unlock Crypt2 for sample code.

    ; Demonstrates how to reproduce the following results found at
    ; https://en.wikipedia.org/wiki/Hash-based_message_authentication_code

    ; HMAC_SHA256("key", "The quick brown fox jumps over the lazy dog") = 0xf7bc83f430538424b13298e6aa6fb143ef4d59a14946175997479dbc2d1a3cd8
    ; HMAC_MD5("key", "The quick brown fox jumps over the lazy dog")    = 0x80070713463e7749b90c2dc24911e275
    ; HMAC_SHA1("key", "The quick brown fox jumps over the lazy dog")   = 0xde7c9b85b8b78aa6bc8a7a36f70a90701c9db4d9

    crypt.i = CkCrypt2::ckCreate()
    If crypt.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkCrypt2::setCkMacAlgorithm(crypt, "hmac")
    CkCrypt2::setCkEncodingMode(crypt, "hex")
    CkCrypt2::ckSetMacKeyString(crypt,"key")
    sData.s = "The quick brown fox jumps over the lazy dog"

    CkCrypt2::setCkHashAlgorithm(crypt, "SHA-256")
    Debug "HMAC_SHA256: " + CkCrypt2::ckMacStringENC(crypt,sData)

    CkCrypt2::setCkHashAlgorithm(crypt, "MD5")
    Debug "HMAC_MD5: " + CkCrypt2::ckMacStringENC(crypt,sData)

    CkCrypt2::setCkHashAlgorithm(crypt, "SHA-1")
    Debug "HMAC_SHA1: " + CkCrypt2::ckMacStringENC(crypt,sData)

    ; The output is the same (ignore case)
    ; HMAC_SHA256: F7BC83F430538424B13298E6AA6FB143EF4D59A14946175997479DBC2D1A3CD8
    ; HMAC_MD5: 80070713463E7749B90C2DC24911E275
    ; HMAC_SHA1: DE7C9B85B8B78AA6BC8A7A36F70A90701C9DB4D9


    CkCrypt2::ckDispose(crypt)


    ProcedureReturn
EndProcedure