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MD5

Deprecated

MD5 (Message-Digest Algorithm 5) produces a 128-bit hash value. It was widely used for checksums and data integrity verification, but is now considered cryptographically broken due to collision vulnerabilities discovered in 2004.

What is MD5?

MD5 is a deprecated cryptographic hash algorithm that produces a 128 bits (32 hex characters) output. MD5 (Message-Digest Algorithm 5) produces a 128-bit hash value. It was widely used for checksums and data integrity verification, but is now considered cryptographically broken due to collision vulnerabilities discovered in 2004. It is classified as very fast in performance and commonly used for file integrity verification (non-security-critical checksums) and deduplication and cache key generation.

Output Length

128 bits (32 hex characters)

Speed

Very Fast

Security

Deprecated

Performance

Extremely fast — processes several GB/s on modern hardware. This speed is a disadvantage for password hashing.

Use Cases

Example Hash

Input:

Hello, World!

MD5 Output:

65a8e27d8879283831b664bd8b7f0ad4

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Related Algorithms

SHA-1 Deprecated
160 bits (40 hex characters)
SHA-256 Recommended
256 bits (64 hex characters)
CRC32 Deprecated
32 bits (8 hex characters)

Related Reading

SHA-256 vs SHA-512 vs MD5: Hash Algorithm Comparison → How to Create a Strong Password in 2026 → What Is JWT and How It Works →