sha1sum
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~3 min read
Article
6 sectionsContents
- Examples
- Hash file trees
- Related programs
- See also
- References
- External links
' is a computer program that calculates and verifies SHA-1 hashes. It is commonly used to verify the integrity of files. It (or a variant) is installed by default on most Linux distributions. Typically distributed alongside are , , and , which use a specific SHA-2 hash function and ', which uses the BLAKE2 cryptographic hash function.
The SHA-1 variants are proven vulnerable to collision attacks, and users should instead use, for example, a SHA-2 variant such as or the BLAKE2 variant ' to prevent tampering by an adversary.