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https://github.com/obgm/libcoap.git
synced 2026-11-04 08:55:40 +03:00
Carsten Schoenert
fc9b47167a
In preparation for changing the make buildsystem to a fully autotools controlled system moving the core libcoap source files to a better logical place. All the library related header files moving to include/coap/ to get all the public and local header files in a separate place. Also moving the C source files of the libcoap library to the folder src/.
30 lines
631 B
C
30 lines
631 B
C
/* hashkey.c -- definition of hash key type and helper functions
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*
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* Copyright (C) 2010,2011 Olaf Bergmann <bergmann@tzi.org>
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*
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* This file is part of the CoAP library libcoap. Please see
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* README for terms of use.
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*/
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#include "hashkey.h"
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/* Caution: When changing this, update COAP_DEFAULT_WKC_HASHKEY
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* accordingly (see int coap_hash_path());
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*/
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void
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coap_hash_impl(const unsigned char *s, unsigned int len, coap_key_t h) {
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size_t j;
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while (len--) {
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j = sizeof(coap_key_t)-1;
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while (j) {
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h[j] = ((h[j] << 7) | (h[j-1] >> 1)) + h[j];
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--j;
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}
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h[0] = (h[0] << 7) + h[0] + *s++;
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}
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}
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