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authorSebastian Huber <sebastian.huber@embedded-brains.de>2021-02-23 14:53:40 +0100
committerSebastian Huber <sebastian.huber@embedded-brains.de>2021-02-26 09:10:07 +0100
commitdea125d02c663d4c66eacc076c3f705a46257faf (patch)
tree4e978a6cbe88e63742224e6b7a06769753b7022b /cpukit/score
parentscore: Add _IO_Base64url() (diff)
downloadrtems-dea125d02c663d4c66eacc076c3f705a46257faf.tar.bz2
score: Add Hash Handler
Update #4267.
Diffstat (limited to 'cpukit/score')
-rw-r--r--cpukit/score/src/hash.c76
1 files changed, 76 insertions, 0 deletions
diff --git a/cpukit/score/src/hash.c b/cpukit/score/src/hash.c
new file mode 100644
index 0000000000..42ea7f0582
--- /dev/null
+++ b/cpukit/score/src/hash.c
@@ -0,0 +1,76 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/**
+ * @file
+ *
+ * @ingroup RTEMSScoreHash
+ *
+ * @brief This source file the implementation of _Hash_Finalize().
+ */
+
+/*
+ * Copyright (C) 2021 embedded brains GmbH (http://www.embedded-brains.de)
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <rtems/score/hash.h>
+#include <rtems/score/assert.h>
+#include <rtems/score/io.h>
+
+#include <limits.h>
+
+static void _Hash_Put_char( int c, void *arg )
+{
+ Hash_Context *context;
+ size_t index;
+
+ context = arg;
+ index = context->index;
+ _Assert( index < sizeof( context->hash->chars ) );
+ context->hash->chars[ context->index ] = (char) c;
+ context->index = index + 1;
+}
+
+void _Hash_Finalize( Hash_Context *context, Hash_Control *hash )
+{
+ unsigned char digest[ 32 ];
+ int n;
+
+ SHA256_Final( digest, &context->Context );
+ context->hash = hash;
+ context->index = 0;
+ hash->chars[ sizeof( *hash ) - 1 ] = '\0';
+ n = _IO_Base64url(
+ _Hash_Put_char,
+ context,
+ digest,
+ sizeof( digest ),
+ NULL,
+ INT_MAX
+ );
+ _Assert_Unused_variable_equals( n, sizeof( *hash ) - 1 );
+}