Encrypt a JWE with a Recipient Public Key

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.SetPublicKey, which sets the public key used to encrypt for a recipient. The example uses RSA-OAEP-256 key management with AES-256-GCM content encryption.

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()

#  Protected header: RSA-OAEP-256 key management with AES-256-GCM content encryption.
header = Chilkat::CkJsonObject.new()
header.UpdateString("alg","RSA-OAEP-256")
header.UpdateString("enc","A256GCM")
success = jwe.SetProtectedHeader(header)
if (success == false)
    print jwe.lastErrorText() + "\n";
    exit
end

#  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 recipient's public key.
pubKey = Chilkat::CkPublicKey.new()
success = pubKey.LoadFromFile("qa_data/recipient_pubkey.pem")
if (success == false)
    print pubKey.lastErrorText() + "\n";
    exit
end

#  Set the public key used to encrypt for recipient 0.
success = jwe.SetPublicKey(0,pubKey)
if (success == false)
    print jwe.lastErrorText() + "\n";
    exit
end

jweCompact = jwe.encrypt("This is the secret content.","utf-8")
if (jwe.get_LastMethodSuccess() == false)
    print jwe.lastErrorText() + "\n";
    exit
end

print jweCompact + "\n";