A context for HKDF can be obtained by calling:
- EVP_PKEY_CTX *pctx = EVP_PKEY_new_id(EVP_PKEY_HKDF, NULL);
+ EVP_PKEY_CTX *pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_HKDF, NULL);
The total length of the info buffer cannot exceed 1024 bytes in length: this
should be more than enough for any normal use of HKDF.
pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_HKDF, NULL);
if (EVP_PKEY_derive_init(pctx) <= 0)
- /* Error */
+ /* Error */
if (EVP_PKEY_CTX_set_hkdf_md(pctx, EVP_sha256()) <= 0)
- /* Error */
+ /* Error */
if (EVP_PKEY_CTX_set1_hkdf_salt(pctx, "salt", 4) <= 0)
- /* Error */
+ /* Error */
if (EVP_PKEY_CTX_set1_hkdf_key(pctx, "secret", 6) <= 0)
- /* Error */
- if (EVP_PKEY_CTX_add1_hkdf_info(pctx, "label", 6) <= 0)
- /* Error */
+ /* Error */
+ if (EVP_PKEY_CTX_add1_hkdf_info(pctx, "label", 5) <= 0)
+ /* Error */
if (EVP_PKEY_derive(pctx, out, &outlen) <= 0)
- /* Error */
+ /* Error */
=head1 CONFORMING TO
=head1 COPYRIGHT
-Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
+Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the OpenSSL license (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy