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Configure: warn when 'none' is the chosen seed source 

Fixes #6980

Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
(Merged from https://github.com/openssl/openssl/pull/6981)
This commit is contained in:
Richard Levitte 2018-08-16 16:01:58 +02:00
parent 96d7852cbd
commit 2805ee1e09
1 changed files with 12 additions and 3 deletions
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15
Configure
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@ -1010,9 +1010,18 @@ if (scalar(@seed_sources) == 0) {
print "Using os-specific seed configuration\n";
push @seed_sources, 'os';
}
die "Cannot seed with none and anything else"
if scalar(grep { $_ eq 'none' } @seed_sources) > 0
&& scalar(@seed_sources) > 1;
if (scalar(grep { $_ eq 'none' } @seed_sources) > 0) {
die "Cannot seed with none and anything else" if scalar(@seed_sources) > 1;
warn <<_____ if scalar(@seed_sources) == 1;
You have selected the --with-rand-seed=none option, which effectively disables
automatic reseeding of the OpenSSL random generator. All operations depending
on the random generator such as creating keys will not work unless the random
generator is seeded manually by the application.
Please read the 'Note on random number generation' section in the INSTALL
instructions and the RAND_DRBG(7) manual page for more details.
_____
}
push @{$config{openssl_other_defines}},
map { (my $x = $_) =~ tr|[\-a-z]|[_A-Z]|; "OPENSSL_RAND_SEED_$x" }
@seed_sources;