DS1955B Java™-powered Cryptographic iButton™
DS1955B Java™-powered Cryptographic iButton™, from Dallas Semiconductor, Inc., holds FIPS 140-1 certificate #111 at overall level 3. The validation is historical: agencies may keep the module in existing systems but not buy it new. Below are its validation history, algorithm certificates and security policy, drawn from the NIST CMVP entry.
Caveat: When using vendor-configured with the FIPS 140-1 Applet
Certificate
| Certificate number | 111 |
|---|---|
| Standard | FIPS 140-1 |
| Status | historical |
| Overall level | 3 |
| Module type | Hardware |
| Embodiment | Multi-chip standalone |
| Vendor | Dallas Semiconductor, Inc. · website |
| Hardware versions | 1.11 |
Module description
Quoted from the NIST CMVP entry for this certificate.
The Dallas Semiconductor 1955 Java-Powered Cryptographic iButton, when operated in FIPS mode, provides SHA-1 hashing, identity-based challenge-response authentication, statistical random number generator tests, and a SHA-1 known answer test. When not operated in FIPS mode, the device provides more cryptographic services such as a high-speed math accelerator for 1024-bit public key cryptography. The module's single silicon chip is encased in a stainless steel button which is rugged enough to withstand harsh outdoor environments.
Security level exceptions
- Physical Security: Level 3 +EFP
Approved algorithms (1)
| Algorithm | CAVP certificates |
|---|---|
| SHA-1 | 36 |
Validation history
| Date | Type | Lab |
|---|---|---|
| 2000-08-30 | Initial | CYGNACOM SOLUTIONS INC |
Status timeline
As observed by this tracker's snapshots. NIST publishes no dates for list moves; observation began 2026-08-21, so earlier changes carry no date.
- 2026-08-21: first observed by this tracker, status historical
- Validation dates on record: 2000-08-30