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What is MD5?
MD5 (Message-Digest Algorithm 5) is a widely used cryptographic hash function that produces a 128-bit (16-byte) hash value, typically expressed as a 32-character hexadecimal number. It was designed by Ronald Rivest in 1991.
Common Uses of MD5
- File Integrity Verification: Verify downloaded files haven't been corrupted or tampered with
- Checksum Generation: Create unique identifiers for data comparison
- Database Indexing: Generate consistent keys for hash tables
- Digital Signatures: Part of various cryptographic protocols
Security Note
While MD5 is still useful for checksums and non-security purposes, it is considered cryptographically broken for security applications. For password hashing, consider using Argon2 or bcrypt instead.
Learn More About Hashing
Watch this excellent explanation of hashing algorithms and security from Computerphile:
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