SHA-256 Hash Generator
SHA-256 Hash
256-bit hash (64 hex characters)
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What is SHA-256?
SHA-256 (Secure Hash Algorithm 256-bit) is a member of the SHA-2 family designed by the NSA. It produces a 256-bit (32-byte) hash value, expressed as a 64-character hexadecimal string. It is widely used in blockchain technology, TLS/SSL certificates, and data integrity verification.
SHA-256 vs MD5
SHA-256 is significantly more secure than MD5. While MD5 produces 128-bit hashes and has known collision vulnerabilities, SHA-256 produces 256-bit hashes with no known practical attacks. SHA-256 is the standard choice for security-critical applications.
- Used in Bitcoin and other cryptocurrencies
- Required for modern TLS certificates
- Resistant to collision and preimage attacks
- Produces a fixed 64-character hex output