Find a JWE Recipient by Header Value

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.FindRecipient, which searches the per-recipient unprotected headers for a member with a given name and string value, and returns the matching recipient index.

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

jwe = Chilkat::CkJwe.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 a multi-recipient JWE (JSON serialization) from a file.
sbJwe = Chilkat::CkStringBuilder.new()
bLoaded = sbJwe.LoadFile("qa_data/message.jwe","utf-8")
if (bLoaded != true)
    print "Failed to load the JWE file." + "\n";
    exit
end

success = jwe.LoadJweSb(sbJwe)
if (success == false)
    print jwe.lastErrorText() + "\n";
    exit
end

#  Search the per-recipient unprotected headers for a member named "kid" whose value equals the
#  given string.  Returns the recipient index, or -1 if not found.
bCaseSensitive = true
index = jwe.FindRecipient("kid","recipient-key-1",bCaseSensitive)
if (index < 0)
    print "Recipient not found." + "\n";
    exit
end

print "Found recipient at index " + index.to_s() + "\n";