SHA-1 hash calculator
The 160-bit SHA standard. Practical collisions were shown by SHAttered (2017) and Shambles (2020); it must not be used for signatures or certificates.
SHA-1 is broken against collision attacks. Do not use it for password storage, signatures or certificates; it is only for legacy compatibility and corruption checks.
Technical details
- Output
- 160 bits (40 hex characters)
- Standard
- FIPS PUB 180-1
- Designed by
- NSA / NIST, 1995
- Security status
- Broken — integrity checks only
- Speed
- Very fast