Load and Validate a JWS from a StringBuilder

See more JSON Web Signatures (JWS) Examples

Demonstrates Jws.LoadJwsSb, which loads a JWS from a StringBuilder (here read from a file). The example then supplies the MAC key and validates the signature.

The file path is relative to the application's current working directory. An absolute path may also be used. Supply the path appropriate to your own environment.

require 'chilkat'

success = false

jws = Chilkat::CkJws.new()

#  The file path is relative to the application's current working directory.  An absolute path may
#  also be used.  Supply the path appropriate to your own environment.

#  Load the JWS text from a file into a StringBuilder.
sbJws = Chilkat::CkStringBuilder.new()
bLoaded = sbJws.LoadFile("qa_data/message.jws","utf-8")
if (bLoaded != true)
    print "Failed to load the JWS file." + "\n";
    exit
end

#  Load the JWS from the StringBuilder.
success = jws.LoadJwsSb(sbJws)
if (success == false)
    print jws.lastErrorText() + "\n";
    exit
end

base64Key = "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXowMTIzNDU="
success = jws.SetMacKey(0,base64Key,"base64")
if (success == false)
    print jws.lastErrorText() + "\n";
    exit
end

v = jws.Validate(0)
if (v < 0)
    print jws.lastErrorText() + "\n";
    exit
end

if (v != 1)
    print "The signature is not valid." + "\n";
    exit
end

print "The signature is valid." + "\n";