Wishlist: Use getentropy() in rng_get_bytes.c if available #589

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opened 2022-04-10 07:35:42 -05:00 by oittaa · 0 comments

oittaa commented

2022-04-10 07:35:42 -05:00

(Migrated from github.com)

Prerequisites

Checked the developer manual
Checked that your issue isn't already filed: https://github.com/issues?utf8=✓&q=repo%3Alibtom%2Flibtomcrypt
Checked that your issue isn't related to TomsFastMath's limitation that PK operations can by default only be done with max. 2048bit keys

Description

It would be great if you supported getentropy() in https://github.com/libtom/libtomcrypt/blob/develop/src/prngs/rng_get_bytes.c

It's found at least in modern Linux, OpenBSD, and FreeBSD based operating systems. It blocks reads until the random pool is initialized and after that "it just works" without complicated error checks. Thanks for the great library!

### Prerequisites * [x] Checked the developer manual * [x] Checked that your issue isn't already filed: https://github.com/issues?utf8=✓&q=repo%3Alibtom%2Flibtomcrypt * [x] Checked that your issue isn't related to TomsFastMath's limitation that PK operations can by default only be done with max. 2048bit keys ### Description It would be great if you supported `getentropy()` in https://github.com/libtom/libtomcrypt/blob/develop/src/prngs/rng_get_bytes.c It's found at least in modern [Linux](https://man7.org/linux/man-pages/man3/getentropy.3.html), [OpenBSD](https://man.openbsd.org/getentropy), and [FreeBSD](https://www.freebsd.org/cgi/man.cgi?query=getentropy&sektion=3&apropos=0&manpath=FreeBSD+13.0-RELEASE+and+Ports) based operating systems. It blocks reads until the random pool is initialized and after that "it just works" without complicated error checks. Thanks for the great library!