Make evp_pkey_ctx_get0_libctx/propq public API

These were previously added as an internal API. But since the CMS code
needs them, other code might do too.

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/13088)

1 files changed, 45 insertions, 0 deletions

diff --git a/doc/man3/EVP_PKEY_CTX_get0_libctx.pod b/doc/man3/EVP_PKEY_CTX_get0_libctx.pod
new file mode 100644
index 0000000000..2536ae820e
--- /dev/null
+++ b/doc/man3/EVP_PKEY_CTX_get0_libctx.pod
@@ -0,0 +1,45 @@
+=pod
+
+=head1 NAME
+
+EVP_PKEY_CTX_get0_libctx,
+EVP_PKEY_CTX_get0_propq
+- functions for getting OPENSSL_CTX and property query data from an EVP_PKEY_CTX
+
+=head1 SYNOPSIS
+
+ #include <openssl/evp.h>
+
+ OPENSSL_CTX *EVP_PKEY_CTX_get0_libctx(EVP_PKEY_CTX *ctx);
+ const char *EVP_PKEY_CTX_get0_propq(EVP_PKEY_CTX *ctx);
+
+=head1 DESCRIPTION
+
+The EVP_PKEY_CTX_get0_libctx() and EVP_PKEY_CTX_get0_propq() functions obtain
+the OPENSSL_CTX and property query string values respectively that were
+associated with the EVP_PKEY_CTX when it was constructed.
+
+=head1 RETURN VALUES
+
+EVP_PKEY_CTX_get0_libctx() and EVP_PKEY_CTX_get0_propq() functions return the
+OPENSSL_CTX and property query string associated with the EVP_PKEY_CTX or NULL
+if they are not set. The returned values should not be freed by the caller.
+
+=head1 SEE ALSO
+
+L<EVP_PKEY_CTX_new(3)>
+
+=head1 HISTORY
+
+All functions were added in OpenSSL 3.0.
+
+=head1 COPYRIGHT
+
+Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
+
+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>.
+
+=cut