SHA-1

File Format
Name	SHA-1
Ontology	Electronic File Formats Encryption SHA-1
PRONOM	fmt/992
Released	1995

SHA-1 is a widely-used 160-bit cryptographic hash function.

Specifications

• FIPS PUB 180-1
• FIPS PUB 180-4

Software

• OpenSSL (openssl dgst -sha1)
• GNU coreutils → sha1sum

See also

• SHA-2 (successor)

Links

• Wikipedia article
• Google Security Blog: Announcing the first SHA1 collision
  • https://shattered.it/