Params API: {utf8,octet}_ptr need to know the data size

[openssl.git] / doc / man3 / BN_CTX_new.pod

diff --git a/doc/man3/BN_CTX_new.pod b/doc/man3/BN_CTX_new.pod
index 623fcd56927a8ae01a88a69bc2f9e96da94335fb..eb8899b773436aa12a8872c623514546a946b5d7 100644 (file)
--- a/doc/man3/BN_CTX_new.pod
+++ b/doc/man3/BN_CTX_new.pod
@@ -26,12 +26,14 @@ BN_CTX_secure_new() allocates and initializes a B<BN_CTX> structure
 but uses the secure heap (see L<CRYPTO_secure_malloc(3)>) to hold the
 B<BIGNUM>s.
 
-BN_CTX_free() frees the components of the B<BN_CTX>, and if it was
-created by BN_CTX_new(), also the structure itself.
-If L<BN_CTX_start(3)> has been used on the B<BN_CTX>,
-L<BN_CTX_end(3)> must be called before the B<BN_CTX>
-may be freed by BN_CTX_free().
-If B<c> is NULL, nothing is done.
+BN_CTX_free() frees the components of the B<BN_CTX> and the structure itself.
+Since BN_CTX_start() is required in order to obtain B<BIGNUM>s from the
+B<BN_CTX>, in most cases BN_CTX_end() must be called before the B<BN_CTX> may
+be freed by BN_CTX_free().  If B<c> is NULL, nothing is done.
+
+A given B<BN_CTX> must only be used by a single thread of execution.  No
+locking is performed, and the internal pool allocator will not properly handle
+multiple threads of execution.
 
 =head1 RETURN VALUES
 
@@ -51,7 +53,8 @@ replace use of BN_CTX_init with BN_CTX_new instead:
 
  BN_CTX *ctx;
  ctx = BN_CTX_new();
- if(!ctx) /* Handle error */
+ if (!ctx)
+     /* error */
  ...
  BN_CTX_free(ctx);
 
@@ -68,7 +71,7 @@ BN_CTX_init() was removed in OpenSSL 1.1.0.
 
 Copyright 2000-2017 The OpenSSL Project Authors. All Rights Reserved.
 
-Licensed under the OpenSSL license (the "License").  You may not use
+Licensed under the Apache License 2.0 (the "License").  You may not use
 this file except in compliance with the License.  You can obtain a copy
 in the file LICENSE in the source distribution or at
 L<https://www.openssl.org/source/license.html>.