Security & Privacy

Hash Generator

Convert any text to a cryptographic hash

Hash Generator
Back to algorithm selection
SHA-1 ⚠ Legacy
160 bits · 40 hex chars
Input Text
Result
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About this Tool

What Is SHA-1?

SHA-1 (Secure Hash Algorithm 1) was designed by the NSA and published by NIST in 1995. It produces a 160-bit hash represented as 40 hexadecimal characters. It was the industry standard for security for over two decades before vulnerabilities were discovered.

Current Uses

  • Git version control (commit hashes)
  • Some legacy SSL/TLS certificates
  • SSH key fingerprint verification
  • Archival and legacy file verification

Security Status

In 2017, Google researchers announced the SHAttered attack — the first practical collision on SHA-1. Browsers and certificate authorities have stopped supporting SHA-1 certificates. Do not use SHA-1 in any new security application — migrate to SHA-256 or higher.

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