(Tcl) Demonstrates HMAC SHA256

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

Chilkat Tcl Extension Downloads Chilkat Tcl Extension Downloads

load ./chilkat.dll

# 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

set crypt [new_CkCrypt2]

CkCrypt2_put_MacAlgorithm $crypt "hmac"
CkCrypt2_put_EncodingMode $crypt "hex"
CkCrypt2_SetMacKeyString $crypt "key"
set sData "The quick brown fox jumps over the lazy dog"

CkCrypt2_put_HashAlgorithm $crypt "SHA-256"
puts "HMAC_SHA256: [CkCrypt2_macStringENC $crypt $sData]"

CkCrypt2_put_HashAlgorithm $crypt "MD5"
puts "HMAC_MD5: [CkCrypt2_macStringENC $crypt $sData]"

CkCrypt2_put_HashAlgorithm $crypt "SHA-1"
puts "HMAC_SHA1: [CkCrypt2_macStringENC $crypt $sData]"

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

delete_CkCrypt2 $crypt