[19.10 FEAT] kernel crypto: seed PRNG with TRNG
Bug #1835553 reported by
bugproxy
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Ubuntu on IBM z Systems |
Fix Released
|
High
|
Frank Heimes | ||
linux (Ubuntu) |
Fix Released
|
Undecided
|
Skipper Bug Screeners |
Bug Description
On a Z14 or later system the PRNG (/dev/prandom) shall be seeded with the CPACF TRNG. In that case the default reseeding frequency shall be increased to make up for the additional cost of the TRNG instruction.
In additionthe STCLKF based seeding shall use a smaller buffer.
Will be provided with kernel 5.2
Git commit . 769f020b6c
tags: | added: architecture-s39064 bugnameltc-178730 severity-high targetmilestone-inin1910 |
Changed in ubuntu: | |
assignee: | nobody → Skipper Bug Screeners (skipper-screen-team) |
affects: | ubuntu → linux (Ubuntu) |
description: | updated |
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Setting this LP ticket to Incomplete until kernel 5.2 has landed in Eoan.