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Modern Password Hashing
Argon2id — Winner of the Password Hashing Competition. Memory-hard and resistant to GPU attacks. Use this for new password storage systems.
Bcrypt — Industry standard for over a decade. Adaptive cost factor makes it future-proof. Excellent for most production use cases.
General Purpose Hashing
SHA-256 & SHA-512 — Secure standards for digital signatures, file integrity verification, and authentication protocols.
MD5 & SHA-1 — Fast algorithms with broken collision resistance. Only use for non-security checksums and legacy compatibility.