primes: Avoid leaking bits of the prime test to pageable memory.
2e2e68ad4874
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Description

primes: Avoid leaking bits of the prime test to pageable memory.

* cipher/primegen.c (gen_prime): Allocate MODS in secure memory.

This increases the pressure on the secure memory by about 1400 byte
but given that we can meanwhile increase the size of the secmem area,
this is acceptable.

GnuPG-bug-id: T3848
Signed-off-by: Werner Koch <wk@gnupg.org>

Details

Provenance

• werner

Authored on Oct 26 2018, 12:57 PM

Parents

rCa755bd0ea09a: libgcrypt.m4: Better compatibility support.

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Tasks

T3848: Use of secure memory when generating secret primes in libgcrypt

Event Timeline

• werner added a task: T3848: Use of secure memory when generating secret primes in libgcrypt.Oct 26 2018, 1:23 PM

• werner committed rC2e2e68ad4874: primes: Avoid leaking bits of the prime test to pageable memory. (authored by • werner).Oct 26 2018, 12:59 PM

• werner mentioned this in rC5b1d022293c5: primes: Avoid leaking bits of the prime test to pageable memory..Oct 26 2018, 1:52 PM

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cipher/

primegen.c

rC2e2e68ad4874

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