# 4938 — FIPS 140 validated cryptographic modules: active, historical or revoked

For 4938, vendor is Ampex Data Systems Corporation; module name is TuffServ® Encryption Module (TSEM); module type is Hardware; validation date is 01/07/2025; status is Active, verified against its source on 2026-08-05.

- **Certificate number:** 4938 _(verified: appears in the quote below)_
- **Vendor:** Ampex Data Systems Corporation _(verified: appears in the quote below)_
- **Module name:** TuffServ® Encryption Module (TSEM) _(verified: appears in the quote below)_
- **Module type:** Hardware _(verified: appears in the quote below)_
- **Validation date:** 01/07/2025 _(verified: appears in the quote below)_
- **Status:** Active _(verified: appears in the quote below)_
- **Standard:** FIPS 140-3 _(verified: appears in the quote below)_

## What the source says

> 4938 | Ampex Data Systems Corporation | TuffServ® Encryption Module (TSEM) | Hardware | 01/07/2025 | Active |

## Source

- https://csrc.nist.gov/Projects/cryptographic-module-validation-program/validated-modules/Search?SearchMode=Advanced&Standard=140-3&CertificateStatus=Active&ValidationYear=0

Last verified: 2026-08-05. Review by: 2026-09-04.
Part of [FIPS 140 validated cryptographic modules: active, historical or revoked](https://referencesource.org/fips-140-module-validation-status/).