MD2 Hash Generator

Generate MD2 hashes from text or files in your browser. MD2 is a legacy 128-bit hash (Ronald Rivest, 1989). Use it only for compatibility with older systems; for new work prefer SHA-256 or SHA-3.

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MD2 (Message Digest Algorithm 2) always produces a 32-character hex string. It is slow and no longer recommended for security. Use this tool for legacy checksums or compatibility only.

Cryptography Guide

Understanding MD2 Hashing

MD2 (Message Digest Algorithm 2) is a legacy cryptographic hash function designed by Ronald Rivest in 1989. It produces a 128-bit (16-byte) hash value and was one of the first widely used hash functions. However, MD2 is now considered cryptographically broken and is deprecated for security applications.

MD2 Hash Characteristics:

  • Fixed Length: Always produces a 32-character hexadecimal string
  • Legacy Algorithm: One of the earliest widely adopted hash functions
  • Slow Computation: More computationally intensive than MD4/MD5
  • Deterministic: Same input always produces the same hash
  • One-Way Function: Computationally difficult to reverse
  • Deprecated: No longer recommended for new applications

Legacy Use Cases:

  • Legacy Systems: Older applications that haven't migrated to newer algorithms
  • Historical Analysis: Cryptographic research and historical data analysis
  • Compatibility: Working with systems that still use MD2
  • Educational Purposes: Understanding the evolution of hash functions
  • Digital Forensics: Analysis of systems using legacy MD2 implementations
Security Warning: MD2 is cryptographically broken and should not be used for any security applications. It's vulnerable to collision attacks and has been deprecated. Use SHA-256 or SHA-3 for all new implementations.
Migration Note: If you're currently using MD2, plan to migrate to SHA-256 or SHA-3 immediately. MD2 is no longer considered secure for any purpose.
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