Fix typo in CONTRIBUTING.md

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

diff --git a/doc/man3/EVP_KEYEXCH_free.pod b/doc/man3/EVP_KEYEXCH_free.pod
index 912434d5c9e9d0b0933856e8455be98eb4183db3..272855ccb3dd8106a4178dd5949c1beb44509add 100644 (file)
--- a/doc/man3/EVP_KEYEXCH_free.pod
+++ b/doc/man3/EVP_KEYEXCH_free.pod
@@ -2,24 +2,39 @@
 
 =head1 NAME
 
-EVP_KEYEXCH_fetch, EVP_KEYEXCH_free, EVP_KEYEXCH_up_ref
+EVP_KEYEXCH_fetch, EVP_KEYEXCH_free, EVP_KEYEXCH_up_ref,
+EVP_KEYEXCH_get0_provider, EVP_KEYEXCH_is_a, EVP_KEYEXCH_do_all_provided,
+EVP_KEYEXCH_names_do_all, EVP_KEYEXCH_get0_name, EVP_KEYEXCH_get0_description,
+EVP_KEYEXCH_gettable_ctx_params, EVP_KEYEXCH_settable_ctx_params
 - Functions to manage EVP_KEYEXCH algorithm objects
 
 =head1 SYNOPSIS
 
  #include <openssl/evp.h>
 
- EVP_KEYEXCH *EVP_KEYEXCH_fetch(OPENSSL_CTX *ctx, const char *algorithm,
+ EVP_KEYEXCH *EVP_KEYEXCH_fetch(OSSL_LIB_CTX *ctx, const char *algorithm,
                                 const char *properties);
  void EVP_KEYEXCH_free(EVP_KEYEXCH *exchange);
  int EVP_KEYEXCH_up_ref(EVP_KEYEXCH *exchange);
+ OSSL_PROVIDER *EVP_KEYEXCH_get0_provider(const EVP_KEYEXCH *exchange);
+ int EVP_KEYEXCH_is_a(const EVP_KEYEXCH *exchange, const char *name);
+ const char *EVP_KEYEXCH_get0_name(const EVP_KEYEXCH *exchange);
+ void EVP_KEYEXCH_do_all_provided(OSSL_LIB_CTX *libctx,
+                                  void (*fn)(EVP_KEYEXCH *exchange, void *arg),
+                                  void *arg);
+ int EVP_KEYEXCH_names_do_all(const EVP_KEYEXCH *exchange,
+                              void (*fn)(const char *name, void *data),
+                              void *data);
+ const char *EVP_KEYEXCH_get0_description(const EVP_KEYEXCH *keyexch);
+ const OSSL_PARAM *EVP_KEYEXCH_gettable_ctx_params(const EVP_KEYEXCH *keyexch);
+ const OSSL_PARAM *EVP_KEYEXCH_settable_ctx_params(const EVP_KEYEXCH *keyexch);
 
 =head1 DESCRIPTION
 
 EVP_KEYEXCH_fetch() fetches the key exchange implementation for the given
-B<algorithm> from any provider offering it, within the criteria given
-by the B<properties>.
-See L<provider(7)/Fetching algorithms> for further information.
+I<algorithm> from any provider offering it, within the criteria given
+by the I<properties>.
+See L<crypto(7)/ALGORITHM FETCHING> for further information.
 
 The returned value must eventually be freed with EVP_KEYEXCH_free().
 
@@ -31,16 +46,54 @@ structure is freed.
 EVP_KEYEXCH_up_ref() increments the reference count for an B<EVP_KEYEXCH>
 structure.
 
+EVP_KEYEXCH_get0_provider() returns the provider that I<exchange> was
+fetched from.
+
+EVP_KEYEXCH_is_a() checks if I<exchange> is an implementation of an
+algorithm that's identifiable with I<name>.
+
+EVP_KEYEXCH_get0_name() returns the algorithm name from the provided
+implementation for the given I<exchange>. Note that the I<exchange> may have
+multiple synonyms associated with it. In this case the first name from the
+algorithm definition is returned. Ownership of the returned string is retained
+by the I<exchange> object and should not be freed by the caller.
+
+EVP_KEYEXCH_names_do_all() traverses all names for the I<exchange>, and
+calls I<fn> with each name and I<data>.
+
+EVP_KEYEXCH_get0_description() returns a description of the I<keyexch>, meant
+for display and human consumption.  The description is at the discretion of
+the I<keyexch> implementation.
+
+EVP_KEYEXCH_do_all_provided() traverses all key exchange implementations by
+all activated providers in the library context I<libctx>, and for each
+of the implementations, calls I<fn> with the implementation method and
+I<data> as arguments.
+
+EVP_KEYEXCH_gettable_ctx_params() and EVP_KEYEXCH_settable_ctx_params() return
+a constant L<OSSL_PARAM(3)> array that describes the names and types of key
+parameters that can be retrieved or set by a key exchange algorithm using
+L<EVP_PKEY_CTX_get_params(3)> and L<EVP_PKEY_CTX_set_params(3)>.
+
 =head1 RETURN VALUES
 
 EVP_KEYEXCH_fetch() returns a pointer to a B<EVP_KEYEXCH> for success
-or B<NULL> for failure.
+or NULL for failure.
 
 EVP_KEYEXCH_up_ref() returns 1 for success or 0 otherwise.
 
+EVP_KEYEXCH_names_do_all() returns 1 if the callback was called for all
+names. A return value of 0 means that the callback was not called for any names.
+
+EVP_KEYEXCH_is_a() returns 1 of I<exchange> was identifiable,
+otherwise 0.
+
+EVP_KEYEXCH_gettable_ctx_params() and EVP_KEYEXCH_settable_ctx_params() return
+a constant L<OSSL_PARAM(3)> array or NULL on error.
+
 =head1 SEE ALSO
 
-L<provider(7)/Fetching algorithms>
+L<crypto(7)/ALGORITHM FETCHING>, L<OSSL_PROVIDER(3)>
 
 =head1 HISTORY
 
@@ -48,7 +101,7 @@ The functions described here were added in OpenSSL 3.0.
 
 =head1 COPYRIGHT
 
-Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
+Copyright 2019-2021 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