diff options
author | Erwin Nindl <nine@wirdorange.org> | 2007-06-22 13:59:20 +0000 |
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committer | Erwin Nindl <nine@wirdorange.org> | 2007-06-22 13:59:20 +0000 |
commit | 0275479cb56c7f562f3513fef66c83fc44d1d8c9 (patch) | |
tree | f6fbb703cebf62d18b05e2a5e7591ac08c5b6702 /srtp/crypto/include/rand_source.h | |
parent | satp internet draft 00 final ietf version (diff) |
added libsrtp to svn
Diffstat (limited to 'srtp/crypto/include/rand_source.h')
-rw-r--r-- | srtp/crypto/include/rand_source.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/srtp/crypto/include/rand_source.h b/srtp/crypto/include/rand_source.h new file mode 100644 index 0000000..b4c2110 --- /dev/null +++ b/srtp/crypto/include/rand_source.h @@ -0,0 +1,91 @@ +/* + * rand_source.h + * + * implements a random source based on /dev/random + * + * David A. McGrew + * Cisco Systems, Inc. + */ +/* + * + * Copyright(c) 2001-2006 Cisco Systems, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 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. + * + * Neither the name of the Cisco Systems, Inc. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 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 HOLDERS 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. + * + */ + + +#ifndef RAND_SOURCE +#define RAND_SOURCE + +#include "err.h" +#include "datatypes.h" + +err_status_t +rand_source_init(void); + +/* + * rand_source_get_octet_string() writes a random octet string. + * + * The function call rand_source_get_octet_string(dest, len) writes + * len octets of random data to the location to which dest points, + * and returns an error code. This error code should be checked, + * and if a failure is reported, the data in the buffer MUST NOT + * be used. + * + * warning: If the return code is not checked, then non-random + * data may inadvertently be used. + * + * returns: + * - err_status_ok if no problems occured. + * - [other] a problem occured, and no assumptions should + * be made about the contents of the destination + * buffer. + */ + +err_status_t +rand_source_get_octet_string(void *dest, uint32_t length); + +err_status_t +rand_source_deinit(void); + +/* + * function prototype for a random source function + * + * A rand_source_func_t writes num_octets at the location indicated by + * dest and returns err_status_ok. Any other return value indicates + * failure. + */ + +typedef err_status_t (*rand_source_func_t) + (void *dest, uint32_t num_octets); + +#endif /* RAND_SOURCE */ |