Create a JWS

See more JSON Web Signatures (JWS) Examples

Demonstrates Jws.CreateJws, which creates and returns a JWS from the current payload, headers, and signing key.

require 'chilkat'

success = false

jws = Chilkat::CkJws.new()

#  Set the protected header for signer 0, specifying the signature algorithm (alg).
header = Chilkat::CkJsonObject.new()
header.UpdateString("alg","HS256")
success = jws.SetProtectedHeader(0,header)
if (success == false)
    print jws.lastErrorText() + "\n";
    exit
end

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

#  Provide the HMAC key (base64) for signer 0.  In production, obtain the key from a secure source
#  rather than hard-coding it.
base64Key = "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXowMTIzNDU="
success = jws.SetMacKey(0,base64Key,"base64")
if (success == false)
    print jws.lastErrorText() + "\n";
    exit
end

#  Create the JWS from the current payload, headers, and signing key.  The returned string is the
#  JWS (compact serialization by default).
jwsCompact = jws.createJws()
if (jws.get_LastMethodSuccess() == false)
    print jws.lastErrorText() + "\n";
    exit
end

print jwsCompact + "\n";