Is NSS FIPS-140 compliant?
Mozilla’s NSS cryptographic software has been tested by government-approved independent testing labs and certified by NIST as being FIPS 140 compliant when operated in FIPS mode on 4 previous occasions. As of this writing, NSS is now being retested to be recertified for the fifth time. NSS was the first open source cryptographic library to be FIPS certified.