The Developer's Guide to Cryptographic Hashes: MD5, SHA-1, and SHA-256

Cryptographic hashes are fundamental to digital security, password storage, and data integrity. But with so many algorithms available, which one should you use?

MD5 and SHA-1: Legacy Algorithms

MD5 and SHA-1 were once the industry standards. However, both have been proven vulnerable to collision attacks, where two different inputs can produce the same hash output. They should never be used for password hashing or digital signatures today. They are only acceptable for non-security tasks, like basic checksums.

SHA-256: The Modern Standard

SHA-256 (part of the SHA-2 family) produces a 256-bit hash. It is currently considered secure and is widely used in SSL certificates, blockchain technology, and secure data verification.

Local Hash Generation

When generating hashes for sensitive strings, you should avoid online tools that might log your inputs. Use tools built on the native Web Crypto API.

Try our Local Hash Generator to instantly generate SHA-256 and SHA-512 hashes directly in your browser.