EVP_KDF_CTX_new() creates a new context for the KDF implementation I<kdf>.
-EVP_KDF_CTX_free() frees up the context C<ctx>. If I<ctx> is NULL, nothing
+EVP_KDF_CTX_free() frees up the context I<ctx>. If I<ctx> is NULL, nothing
is done.
EVP_KDF_CTX_kdf() returns the B<EVP_KDF> associated with the context
EVP_KDF_reset() resets the context to the default state as if the context
had just been created.
-EVP_KDF_derive() derives C<keylen> bytes of key material and places it in the
+EVP_KDF_derive() derives I<keylen> bytes of key material and places it in the
I<key> buffer. If the algorithm produces a fixed amount of output then an
-error will occur unless the C<keylen> parameter is equal to that output size,
+error will occur unless the I<keylen> parameter is equal to that output size,
as returned by EVP_KDF_size().
EVP_KDF_get_params() retrieves details about the implementation
=head1 RETURN VALUES
-EVP_MAC_fetch() returns a pointer to a newly fetched B<EVP_KDF>, or
+EVP_KDF_fetch() returns a pointer to a newly fetched B<EVP_KDF>, or
NULL if allocation failed.
EVP_KDF_name() returns the name for the given I<kdf>, if it has been
EVP_KDF_provider() returns a pointer to the provider for the KDF, or
NULL on error.
-EVP_MAC_up_ref() returns 1 on success, 0 on error.
+EVP_KDF_up_ref() returns 1 on success, 0 on error.
EVP_KDF_CTX_new() returns either the newly allocated
-C<EVP_KDF_CTX> structure or C<NULL> if an error occurred.
+B<EVP_KDF_CTX> structure or NULL if an error occurred.
EVP_KDF_CTX_free() and EVP_KDF_reset() do not return a value.
-EVP_KDF_size() returns the output size. C<SIZE_MAX> is returned to indicate
+EVP_KDF_size() returns the output size. B<SIZE_MAX> is returned to indicate
that the algorithm produces a variable amount of output; 0 to indicate failure.
The remaining functions return 1 for success and 0 or a negative value for
=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>.
+I<algorithm> from any provider offering it, within the criteria given
+by the I<properties>.
See L<provider(7)/Fetching algorithms> for further information.
The returned value must eventually be freed with EVP_KEYEXCH_free().
=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_MAC_final() does the final computation and stores the result in
the memory pointed at by I<out> of size I<outsize>, and sets the number
of bytes written in I<*outl> at.
-If I<out> is B<NULL> or I<outsize> is too small, then no computation
+If I<out> is NULL or I<outsize> is too small, then no computation
is made.
To figure out what the output length will be and allocate space for it
-dynamically, simply call with I<out> being B<NULL> and I<outl>
+dynamically, simply call with I<out> being NULL and I<outl>
pointing at a valid location, then allocate space and make a second
call with I<out> pointing at the allocated space.