Sign a JWS with an HMAC Key from BinData

See more JSON Web Signatures (JWS) Examples

Demonstrates Jws.SetMacKeyBd, which sets the symmetric MAC key for a signature from the raw bytes in a BinData.

require 'chilkat'

success = false

jws = Chilkat::CkJws.new()

#  Protected header specifying HMAC-SHA256.
header = Chilkat::CkJsonObject.new()
header.UpdateString("alg","HS256")
success = jws.SetProtectedHeader(0,header)
if (success == false)
    print jws.lastErrorText() + "\n";
    exit
end

bIncludeBom = false
success = jws.SetPayload("This is the content to sign.","utf-8",bIncludeBom)
if (success == false)
    print jws.lastErrorText() + "\n";
    exit
end

#  Set the symmetric MAC key for signature 0 from the raw bytes in a BinData.  In production, obtain
#  the key material from a secure source.
bdKey = Chilkat::CkBinData.new()
bdKey.AppendEncoded("YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXowMTIzNDU=","base64")
success = jws.SetMacKeyBd(0,bdKey)
if (success == false)
    print jws.lastErrorText() + "\n";
    exit
end

jwsCompact = jws.createJws()
if (jws.get_LastMethodSuccess() == false)
    print jws.lastErrorText() + "\n";
    exit
end

print jwsCompact + "\n";