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AGEX Bundle Diff

· Last updated：2026-06-10

Compare two AGEX bundles and highlight metadata or protection-setting differences

Details

What this tool helps you do

This tool helps with review and audit work. It shows where two AGEX bundles differ in visible metadata, KDF presets, signer information, and low-level protection inputs such as salt, nonce, or ciphertext changes.

Execution

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Written by the Elysia Tools team
Metadata66
Diff17

Tool usage guide

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Category
Security
Input types
file
Output type
json
Sample coverage
4
API ready
Yes

Overview

The AGEX Bundle Diff tool allows security auditors and developers to compare two AGEX bundles side-by-side, highlighting differences in metadata, KDF presets, signer information, and low-level protection inputs like salt, nonce, or ciphertext.

When to use

  • When auditing security policy changes between two versions of an AGEX bundle.
  • When verifying if a redistributed AGEX file has altered KDF parameters or signer signatures.
  • When troubleshooting decryption issues by checking if the ciphertext, salt, or nonce has changed.

How it works

  1. 1Upload the original AGEX bundle file as the Left Bundle File.
  2. 2Upload the modified or comparison AGEX bundle file as the Right Bundle File.
  3. 3Run the comparison to generate a JSON report detailing differences in metadata fields, KDF limits, and cryptographic parameters.

Use cases

  • Auditing KDF parameter changes (e.g., moderate vs. sensitive) between bundle revisions.
  • Verifying signer identity and signature integrity across redistributed files.
  • Detecting unauthorized modifications to salt, nonce, or ciphertext in a bundle.

Compare alternatives

  • Rewrite exposed AGEX metadata like original filename or signer ID without touching ciphertext bytes

  • Inspect AGEX bundle metadata without decrypting the file contents

  • Extract audio/video metadata as JSON with ffprobe.

Who it's for

Best for

  • Extract JSON files in the browser.
  • The “Audit what changed between two AGEX revisions” workflow, done in one pass.
  • Repeatable jobs with JSON files and the same settings every time.

Not ideal for

  • Fully automated batch jobs — this page is built for interactive use; use the API endpoint for scripts.
  • Files in formats this tool does not accept — it works with .json input.

Edge cases & common failures

  • Trailing commas or single quotes

    Strict JSON parsers reject them — remove trailing commas and switch to double quotes before validating or formatting.

  • Very large files

    Large files take longer and can hit browser memory limits — try a smaller sample first.

  • Skipping the output check

    Compare the first rows or pages of the output with the input before using it in production.

Examples

1. Auditing Security Policy Upgrades

Security Auditor

Background

A security team upgraded their encryption policy to use stronger KDF settings for their AGEX bundles.

Problem

The auditor needs to verify that the new bundle version actually uses the 'sensitive' KDF opslimit instead of the old 'moderate' setting.

How to use

Upload the original bundle as the Left Bundle File and the upgraded bundle as the Right Bundle File, then run the comparison.

Outcome

The tool outputs a JSON diff showing that kdf.opslimit changed from moderate to sensitive.

2. Verifying Signer Integrity

Release Engineer

Background

A release engineer is distributing an AGEX bundle and wants to ensure the signer information was not altered during transit.

Problem

Confirming that the signer ID and signature metadata match the original release bundle exactly.

How to use

Upload the reference release bundle and the distributed bundle to compare their signer metadata.

Outcome

The comparison confirms zero differences in the signer fields, validating the bundle's integrity.

FAQ

What file formats does this tool support?

It supports AGEX bundle files, typically in JSON format.

Can I detect changes in the encryption key settings?

Yes, the tool highlights differences in KDF presets, including opslimit and memlimit.

Does this tool compare the actual decrypted file contents?

No, it compares the metadata, signer information, and low-level protection inputs of the bundles.

What low-level cryptographic fields are compared?

It compares differences in salt, nonce, and ciphertext values.

Is my bundle data uploaded to a public server?

No, the comparison is processed securely to ensure your cryptographic metadata remains private.

Hub

File and Data Diff Comparison Tools

Compare two candidate artifacts, choose the right diff path for the format, review structural or semantic changes, and finish with integrity checks when approval needs byte-level certainty.

Hub

AGEX Secure File Packaging and Handoff

Package a file as AGEX, inspect visible metadata, choose passphrase and signature settings, and verify the handoff before delivery.

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