EVP_MD_meth_get_result_size, EVP_MD_meth_get_app_datasize,
EVP_MD_meth_get_flags, EVP_MD_meth_get_init, EVP_MD_meth_get_update,
EVP_MD_meth_get_final, EVP_MD_meth_get_copy, EVP_MD_meth_get_cleanup,
-EVP_MD_meth_get_ctrl, EVP_MD_CTX_md_data
+EVP_MD_meth_get_ctrl
- Routines to build up EVP_MD methods
=head1 SYNOPSIS
unsigned char *md));
int EVP_MD_meth_set_copy(EVP_MD *md, int (*copy)(EVP_MD_CTX *to,
const EVP_MD_CTX *from));
- void *EVP_MD_CTX_md_data(const EVP_MD_CTX *ctx);
int EVP_MD_meth_set_cleanup(EVP_MD *md, int (*cleanup)(EVP_MD_CTX *ctx));
int EVP_MD_meth_set_ctrl(EVP_MD *md, int (*ctrl)(EVP_MD_CTX *ctx, int cmd,
int p1, void *p2));
=item EVP_MD_FLAG_ONESHOT
-This digest method can only handles one block of input.
+This digest method can only handle one block of input.
+
+=item EVP_MD_FLAG_XOF
+
+This digest method is an extensible-output function (XOF) and supports
+the B<EVP_MD_CTRL_XOF_LEN> control.
=item EVP_MD_FLAG_DIGALGID_NULL
EVP_MD_FLAG_DIGALGID_NULL, the latter will be overridden.>
Currently unused.
+=item EVP_MD_FLAG_FIPS
+
+This digest method is suitable for use in FIPS mode.
+Currently unused.
+
=back
EVP_MD_meth_set_init() sets the digest init function for B<md>.
-The digest init function is called by EVP_DigestInit(),
+The digest init function is called by EVP_Digest(), EVP_DigestInit(),
EVP_DigestInit_ex(), EVP_SignInit, EVP_SignInit_ex(), EVP_VerifyInit()
and EVP_VerifyInit_ex().
EVP_MD_meth_set_update() sets the digest update function for B<md>.
-The digest update function is called by EVP_DigestUpdate(),
+The digest update function is called by EVP_Digest(), EVP_DigestUpdate() and
EVP_SignUpdate().
EVP_MD_meth_set_final() sets the digest final function for B<md>.
-The digest final function is called by EVP_DigestFinal(),
+The digest final function is called by EVP_Digest(), EVP_DigestFinal(),
EVP_DigestFinal_ex(), EVP_SignFinal() and EVP_VerifyFinal().
EVP_MD_meth_set_copy() sets the function for B<md> to do extra
EVP_MD_CTX_free().
EVP_MD_meth_set_ctrl() sets the control function for B<md>.
-
+See L<EVP_MD_CTX_ctrl(3)> for the available controls.
EVP_MD_meth_get_input_blocksize(), EVP_MD_meth_get_result_size(),
EVP_MD_meth_get_app_datasize(), EVP_MD_meth_get_flags(),
to retrieve the method data given with the EVP_MD_meth_set_*()
functions above.
+=head1 RETURN VALUES
+
+EVP_MD_meth_new() and EVP_MD_meth_dup() return a pointer to a newly
+created B<EVP_MD>, or NULL on failure.
+All EVP_MD_meth_set_*() functions return 1.
+EVP_MD_get_input_blocksize(), EVP_MD_meth_get_result_size(),
+EVP_MD_meth_get_app_datasize() and EVP_MD_meth_get_flags() return the
+indicated sizes or flags.
+All other EVP_CIPHER_meth_get_*() functions return pointers to their
+respective B<md> function.
+
=head1 SEE ALSO
L<EVP_DigestInit(3)>, L<EVP_SignInit(3)>, L<EVP_VerifyInit(3)>
=head1 COPYRIGHT
-Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
+Copyright 2015-2018 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>.