diff options
Diffstat (limited to 'cpukit/score/src')
-rw-r--r-- | cpukit/score/src/hash.c | 76 |
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 ); +} |