SHAGenerator
Processed locally in your browser • Zero Server Upload

SHA-1 Hash Generator.

Generate 160-bit SHA-1 message digests (40 hex characters) online.

SHA-1 Hash Generator160 bits
43 characters · 43 bytes
Generated SHA-1 Digest40 hex chars
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Privacy guarantee: SHA-1 calculation is executed locally in your browser. No data is sent to a server.

About SHA-1 Generator.

SHA-1 (Secure Hash Algorithm 1) was published by NIST in 1995 (FIPS PUB 180-1). It computes a 160-bit hash (40 hexadecimal characters). It has been deprecated by NIST and web browsers for security certificates following the SHAttered collision attack, but continues to serve as the core object identifier in Git repositories.

Primary Use Cases

  • ✓Inspecting Git commit, tree, and blob object SHA-1 hashes
  • ✓Verifying torrent info hashes and magnet link identifiers
  • ✓Legacy compatibility testing for older cryptographic protocols

Technical Specifications

Standard
Output Size
160 bits (20 bytes / 40 hex)
Execution Mode
Client-Side (Web Crypto)
Server Upload
None (Zero bytes sent)

Frequently Asked Questions.

Common technical and security queries regarding SHA-1 Generator.

Frequently Asked Questions

Clear answers to common cryptographic and implementation questions.

Why did browsers deprecate SHA-1 SSL certificates?
In 2017, researchers at CWI Amsterdam and Google announced "SHAttered", demonstrating the first real-world collision attack against SHA-1, making it unsafe for digital certificates.
Does Git still use SHA-1?
Yes, Git historically identifies commits and trees by SHA-1. Modern Git also supports SHA-256 object formats for newer repositories.

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