MD4 Online Encryptor
Generate MD4 hash values for text or files. Supports multiple input/output formats, compatible with legacy systems
Enter plain text (UTF-8 encoded)
Result MD4
About MD4 Algorithm
MD4 (Message-Digest Algorithm 4) is a cryptographic hash function designed by Ronald Rivest in 1990 that produces a 128-bit (16-byte) hash value. MD4 was optimized for speed and is the predecessor of MD5.
MD4 is now considered cryptographically broken and has serious security vulnerabilities. While it is not suitable for security-critical applications, it is still used in some and .
This tool computes the hash entirely in your browser using JavaScript. Your files and text data are to our servers, ensuring 100% privacy and security.
Key Features
Common Use Cases
FAQ
Is MD4 secure?
No. MD4 has serious security vulnerabilities and has been shown to be vulnerable to collision and preimage attacks. It should not be used for any security-sensitive applications. Use modern hash algorithms like SHA-256 or SHA-3 instead.
What is the difference between MD4 and MD5?
MD4 is the predecessor optimized for speed with only three rounds. MD5 adds a fourth round for improved security, trading some speed for robustness. Even so, both are now considered cryptographically broken.
Why is MD4 still needed?
Primarily for legacy compatibility. Some older software and protocols (e.g., NTLM v1) still use MD4. It also has educational value in understanding hash algorithm evolution.
Can I store passwords with MD4?
Absolutely not! MD4 is insecure and easily cracked. For password storage, use purpose-built password hash algorithms like Argon2, Bcrypt, or PBKDF2.
What is the length of an MD4 hash?
MD4 produces a 128-bit (16-byte) hash, the same as MD5. In hexadecimal, it is 32 characters long; in Base64, it is 24 characters (including padding).