{% load static %}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Decrypt and Forward</title>
<script src="{% static 'abac/jsbn.js' %}"></script>
<script src="{% static 'abac/jsbn2.js' %}"></script>
<script src="{% static 'abac/prng4.js' %}"></script>
<script src="{% static 'abac/rng.js' %}"></script>
<script src="{% static 'abac/paillier.js' %}"></script>
</head>
<body>
<script>
function getPrivateKeyFromWebStorage() {
// Retrieve and parse the stored private key
const storedPrivateKey = localStorage.getItem('privateKey');
if (!storedPrivateKey) return null;
const parsedKey = JSON.parse(storedPrivateKey);
// Construct the public key from the stored value
const n = new BigInteger(localStorage.getItem('publicKey'));
const publicKey = new paillier.publicKey(2048, n);
// Construct the private key
const lambda = new BigInteger(parsedKey.lambda);
const privateKey = new paillier.privateKey(lambda, publicKey);
// Attach the x value
privateKey.x = new BigInteger(parsedKey.x);
return privateKey;
}
// Assuming you have a method to get privateKey from local web storage
let privateKey = getPrivateKeyFromWebStorage();
let encryptions = {{ encryptions_as_strings|safe }};
let decryptedValues = [];
for(let enc of encryptions) {
let bigIntEnc = new BigInteger(enc.toString());
decryptedValues.push(privateKey.decrypt(bigIntEnc).toString(10));
}
// Forward the decrypted values with a POST request
let form = document.createElement("form");
form.setAttribute("method", "post");
form.setAttribute("action", "{% url 'abac:verify_decryption' %}");
let csrfField = document.createElement("input");
csrfField.setAttribute("type", "hidden");
csrfField.setAttribute("name", "csrfmiddlewaretoken");
csrfField.setAttribute("value", "{{ csrf_token }}");
form.appendChild(csrfField);
let tokenField = document.createElement("input");
tokenField.setAttribute("type", "hidden");
tokenField.setAttribute("name", "token");
tokenField.setAttribute("value", "{{ token }}");
form.appendChild(tokenField);
for(let dec of decryptedValues) {
let input = document.createElement("input");
input.setAttribute("type", "hidden");
input.setAttribute("name", "decryptions");
input.setAttribute("value", dec);
form.appendChild(input);
}
document.body.appendChild(form);
form.submit();
</script>
</body>
</html>