HMAC-SHA1 hash calculator
The HMAC construction is not directly affected by SHA-1 collisions, but new systems should prefer HMAC-SHA256.
Technical details
- Output
- 160 bits (40 hex characters)
- Standard
- RFC 2104
- Designed by
- IETF, 1997
- Security status
- Legacy — avoid in new systems
- Speed
- Very fast