Make BIGNUM rand functions available within the FIPS module

The BIGNUM rand functions were previously disabled for the FIPS module.
We can now re-enable them.

Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
(Merged from https://github.com/openssl/openssl/pull/9193)

1 files changed, 29 insertions, 8 deletions

diff --git a/doc/man3/BN_rand.pod b/doc/man3/BN_rand.pod
index 93e8c3f9d4..fc41322f8e 100644
--- a/doc/man3/BN_rand.pod
+++ b/doc/man3/BN_rand.pod
@@ -2,30 +2,37 @@
 
 =head1 NAME
 
-BN_rand, BN_priv_rand, BN_pseudo_rand,
-BN_rand_range, BN_priv_rand_range, BN_pseudo_rand_range
+BN_rand_ex, BN_rand, BN_priv_rand_ex, BN_priv_rand, BN_pseudo_rand,
+BN_rand_range_ex, BN_rand_range, BN_priv_rand_range_ex, BN_priv_rand_range,
+BN_pseudo_rand_range
 - generate pseudo-random number
 
 =head1 SYNOPSIS
 
  #include <openssl/bn.h>
 
+ int BN_rand_ex(BIGNUM *rnd, int bits, int top, int bottom, BN_CTX *ctx);
  int BN_rand(BIGNUM *rnd, int bits, int top, int bottom);
 
+ int BN_priv_rand_ex(BIGNUM *rnd, int bits, int top, int bottom, BN_CTX *ctx);
  int BN_priv_rand(BIGNUM *rnd, int bits, int top, int bottom);
 
  int BN_pseudo_rand(BIGNUM *rnd, int bits, int top, int bottom);
 
+ int BN_rand_range_ex(BIGNUM *rnd, BIGNUM *range, BN_CTX *ctx);
  int BN_rand_range(BIGNUM *rnd, BIGNUM *range);
 
+ int BN_priv_rand_range_ex(BIGNUM *rnd, BIGNUM *range, BN_CTX *ctx);
  int BN_priv_rand_range(BIGNUM *rnd, BIGNUM *range);
 
  int BN_pseudo_rand_range(BIGNUM *rnd, BIGNUM *range);
 
 =head1 DESCRIPTION
 
-BN_rand() generates a cryptographically strong pseudo-random number of
-B<bits> in length and stores it in B<rnd>.
+BN_rand_ex() generate a cryptographically strong pseudo-random
+number of B<bits> in length and stores it in B<rnd> using the random number
+generator for the library context associated with B<ctx>. The parameter B<ctx>
+may be NULL in which case the default library context is used.
 If B<bits> is less than zero, or too small to
 accommodate the requirements specified by the B<top> and B<bottom>
 parameters, an error is returned.
@@ -40,11 +47,20 @@ If B<bottom> is B<BN_RAND_BOTTOM_ODD>, the number will be odd; if it
 is B<BN_RAND_BOTTOM_ANY> it can be odd or even.
 If B<bits> is 1 then B<top> cannot also be B<BN_RAND_FLG_TOPTWO>.
 
-BN_rand_range() generates a cryptographically strong pseudo-random
-number B<rnd> in the range 0 E<lt>= B<rnd> E<lt> B<range>.
+BN_rand() is the same as BN_rand_ex() except that the default library context
+is always used.
 
-BN_priv_rand() and BN_priv_rand_range() have the same semantics as
-BN_rand() and BN_rand_range() respectively.  They are intended to be
+BN_rand_range_ex() generates a cryptographically strong pseudo-random
+number B<rnd> in the range 0 E<lt>= B<rnd> E<lt> B<range> using the random number
+generator for the library context associated with B<ctx>. The parameter B<ctx>
+may be NULL in which case the default library context is used.
+
+BN_rand_range() is the same as BN_rand_range_ex() except that the default
+library context is always used.
+
+BN_priv_rand_ex(), BN_priv_rand(), BN_priv_rand_rand_ex() and
+BN_priv_rand_range() have the same semantics as BN_rand_ex(), BN_rand(),
+BN_rand_range_ex() and BN_rand_range() respectively.  They are intended to be
 used for generating values that should remain private, and mirror the
 same difference between L<RAND_bytes(3)> and L<RAND_priv_bytes(3)>.
 
@@ -85,6 +101,11 @@ a future release.
 The
 BN_priv_rand() and BN_priv_rand_range() functions were added in OpenSSL 1.1.1.
 
+=item *
+
+The BN_rand_ex(), BN_priv_rand_ex(), BN_rand_range_ex() and
+BN_priv_rand_range_ex() functions were added in OpenSSL 3.0.
+
 =back
 
 =head1 COPYRIGHT