Hi Everyone, I have an old VIA C7-D machine I use for testing Padlock. Padlock is a security engine provides AES, SHA and a RNG for some of the VIA processors. (It predates Intel's gear by about 15 years).
With rng-tools installed I'm seeing failures in /dev/random. Draining /dev/random and then trying to read from it is causing prolonged blocking. Blocking should not occur since Padlock has a hardware RNG. It also appears draining /dev/random is breaking /dev/urandom. /dev/urandom is blocking on 1024 bytes. It took about 6 minutes to read 1024 bytes from /dev/urandom after draining /dev/random. I pinged Thorsten and Henrique but did not receive a response. (Henrique is CC'd in case it fell off his radar). I believe this is the package: https://packages.ubuntu.com/bionic/rng-tools. But I may be mistaken. My question is, is this something Ubuntu would like to investigate? ========== $ lsb_release -a No LSB modules are available. Distributor ID: Peppermint Description: Peppermint 10 Ten Release: 10 Codename: bionic $ apt-cache show rng-tools Package: rng-tools Architecture: i386 Version: 5-0ubuntu4 Priority: optional Section: universe/utils Origin: Ubuntu Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com> Original-Maintainer: Henrique de Moraes Holschuh <h...@debian.org> Bugs: https://bugs.launchpad.net/ubuntu/+filebug Installed-Size: 87 Provides: intel-rng-tools Depends: libc6 (>= 2.4), libgcrypt20 (>= 1.8.0), udev (>= 0.053) | makedev (>= 2.3.1-77) Conflicts: intel-rng-tools Replaces: intel-rng-tools Filename: pool/universe/r/rng-tools/rng-tools_5-0ubuntu4_i386.deb Size: 22424 MD5sum: 2d5fb50e664508b75cf5261a5ebd8257 SHA1: 229fd35e378f76f6a287a108d321e214602f2da5 SHA256: 946a8f199b1d9f392763871428cfd634702ef4640971a94d977f27fc8a9766bd Description-en: Daemon to use a Hardware TRNG The rngd daemon acts as a bridge between a Hardware TRNG (true random number generator) such as the ones in some Intel/AMD/VIA chipsets, and the kernel's PRNG (pseudo-random number generator). . It tests the data received from the TRNG using the FIPS 140-2 (2002-10-10) tests to verify that it is indeed random, and feeds the random data to the kernel entropy pool. . This increases the bandwidth of the /dev/random device, from a source that does not depend on outside activity. It may also improve the quality (entropy) of the randomness of /dev/random. . A TRNG kernel module such as hw_random, or some other source of true entropy that is accessible as a device or fifo, is required to use this package. . This is an unofficial version of rng-tools which has been extensively modified to add multithreading and a lot of new functionality. Description-md5: 6da2aca3dd07b55b609d9cf3d5d7cd57 -- Ubuntu-devel-discuss mailing list Ubuntu-devel-discuss@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-devel-discuss
