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decryptcore: preload OpenSSL error strings; seed PRNG

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As in r360226, preload OpenSSL error strings and seed the PRNG
before entering capability mode.

MFC after:	2 weeks
Sponsored by:	Dell EMC Isilon
This commit is contained in:
Eric van Gyzen 2020-12-11 14:32:42 +00:00
parent 580a173a05
commit 4617b1f62b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=368553
1 changed files with 13 additions and 0 deletions
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13
sbin/decryptcore/decryptcore.c
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@ -170,6 +170,19 @@ decrypt(int ofd, const char *privkeyfile, const char *keyfile,
goto failed;
}
/*
* Obsolescent OpenSSL only knows about /dev/random, and needs to
* pre-seed before entering cap mode. For whatever reason,
* RSA_pub_encrypt uses the internal PRNG.
*/
#if OPENSSL_VERSION_NUMBER < 0x10100000L
{
unsigned char c[1];
RAND_bytes(c, 1);
}
#endif
ERR_load_crypto_strings();
caph_cache_catpages();
if (caph_enter() < 0) {
pjdlog_errno(LOG_ERR, "Unable to enter capability mode");