Input
MD4 digests are 32 hexadecimal characters. The same input always gives the same digest.
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MD4 digest
The digest appears below in hexadecimal.
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Compute the MD4 message digest of any text, instantly and privately in your browser. MD4 produces a 128-bit hash, shown here as 32 hexadecimal characters.
MD4 digests are 32 hexadecimal characters. The same input always gives the same digest.
The digest appears below in hexadecimal.
MD4 (Message Digest 4) is a hash function designed by Ronald Rivest in 1990 and specified in RFC 1320. It processes input in 512-bit blocks through three rounds of 16 operations and outputs a fixed 128-bit digest, usually written as 32 hexadecimal characters. MD4 directly influenced the designs of MD5, SHA-1 and RIPEMD.
MD4 is considered broken: practical collision attacks were published in the mid-1990s, and collisions can now be found in well under a second. Never use MD4 for passwords, signatures or any security purpose. It remains useful for checksums, legacy NTLM hash research and non-security fingerprints.