MD2/MD4 Encryption

📖 Description

1. Introduction to MD2 and MD4 Algorithms

Both algorithms were designed by cryptography master Ronald Rivest and are predecessors to MD5:

• MD2 (Message Digest 2): Initially optimized for 8-bit computers, it was widely used in early digital certificates (such as some older X.509 certificates) and early versions of Microsoft and RSA security protocols.
• MD4 (Message Digest 4): Designed for extremely high computational speed, it had a profound influence on subsequent algorithms like MD5 and SHA-1. It still exists in the underlying implementations of certain specific network protocols (e.g., NTLM authentication).

2. Core Feature Analysis

This site's tool provides precise algorithm replication, ensuring calculation results are fully aligned with industry standards:

A. Strict Standard Implementation

• MD2 Model: Complies with RFC 1319 standard, generating a 128-bit (32-character hexadecimal) digest.
• MD4 Model: Complies with RFC 1320 standard, also generating a 128-bit digest.

B. Multi-Mode Data Input

• String Mode: Supports input of plain text encoded in UTF-8.
• Hexadecimal Mode (Hex): Supports processing raw binary byte streams, suitable for analyzing message digests in legacy communication protocols.

C. Absolute Privacy Guarantee: Local Computation

• Pure Frontend Computation: All hash calculations are performed locally in your browser.
• Zero Data Upload: Your input text and generated digest are never uploaded to the server. Whether analyzing sensitive legacy password hashes or system credentials, this site ensures your data never leaves your device.

3. Application Scenario Reference

4. Operation Process Overview

1. Input Content: Paste the raw text or hexadecimal data to be calculated into the input box.
2. Select Algorithm: Switch between MD2 or MD4 in the tab.
3. Real-time Preview: As you type, the result box immediately generates a 32-character hexadecimal string.
4. Convert Format: You can toggle the case of the result with one click to adapt to different coding standards.
5. One-Click Copy: Click the copy icon to directly apply the calculated digest to your project.

5. Why Choose This Site's MD2/MD4 Assistant?

• High Fidelity: Perfectly compatible with output from authoritative libraries like OpenSSL, resolving calculation errors caused by differing padding details.
• Ultra-Fast Response: Lightweight webpage design loads instantly, ready to use immediately.
• Completely Free: No registration required, unlimited frequency, a powerful companion for handling historical protocol data.

📖 Recommendation