文件列表:

Win_STP\CHANGES (8061, 2005-09-22)
Win_STP\config.guess (43332, 2005-10-03)
Win_STP\config.hw (5285, 2006-05-23)
Win_STP\config.h_win32vc7 (4595, 2006-07-13)
Win_STP\config.log (33693, 2007-08-14)
Win_STP\config.status (31818, 2007-08-14)
Win_STP\config.sub (31307, 2005-10-03)
Win_STP\configure (260277, 2005-10-03)
Win_STP\configure.in (5887, 2005-10-03)
Win_STP\config_in.h (4535, 2005-10-03)
Win_STP\install-sh (5598, 2005-09-22)
Win_STP\libsrtp.a (122744, 2007-08-29)
Win_STP\LICENSE (1614, 2006-07-12)
Win_STP\Makefile (6874, 2007-08-14)
Win_STP\Makefile.in (6881, 2007-07-06)
Win_STP\makefile.rtf (198, 2007-07-06)
Win_STP\RTPtoSRTPtoRTPDebugSRTP.1 (0, 2007-09-06)
Win_STP\srtp7.sln (871, 2007-08-17)
Win_STP\srtp7.suo (102912, 2008-10-12)
Win_STP\srtp7.vcproj (9326, 2007-09-05)
Win_STP\srtp7.vcproj.DEEPIN-8E180ABB.tanyp.user (1420, 2007-09-28)
Win_STP\srtp7.vcproj.EC5EAA5B29444FE.谭宜平.user (1420, 2007-08-20)
Win_STP\UpgradeLog.XML (2757, 2007-08-17)
Win_STP\VERSION (6, 2007-05-05)
Win_STP\crypto\Makefile (3021, 2007-08-14)
Win_STP\crypto\Makefile.in (3044, 2005-10-03)
Win_STP\crypto\VERSION (6, 2005-09-22)
Win_STP\crypto\ae_xfm\xfm.c (15347, 2006-07-19)
Win_STP\crypto\ae_xfm (0, 2008-07-08)
Win_STP\crypto\cipher\aes.c (83194, 2007-09-05)
Win_STP\crypto\cipher\aes_cbc.c (12536, 2006-07-13)
Win_STP\crypto\cipher\aes_icm.c (15410, 2007-09-05)
Win_STP\crypto\cipher\cipher.c (11978, 2006-07-13)
Win_STP\crypto\cipher\null_cipher.c (4460, 2006-07-13)
Win_STP\crypto\cipher (0, 2008-07-08)
Win_STP\crypto\hash\auth.c (4993, 2006-06-09)
Win_STP\crypto\hash\hmac.c (7396, 2006-07-19)
Win_STP\crypto\hash\null_auth.c (4711, 2006-07-13)
Win_STP\crypto\hash\sha1.c (11319, 2006-06-09)
... ...

Secure RTP (SRTP) Reference Implementation David A. McGrew Cisco Systems, Inc. mcgrew@cisco.com This package provides an implementation of the Secure Real-time Transport Protocol (SRTP), the Universal Security Transform (UST), and a supporting cryptographic kernel. These mechanisms are documented in the Internet Drafts in the doc/ subdirectory. The SRTP API is documented in include/srtp.h, and the library is in libsrtp.a (after compilation). An overview and reference manual is available in doc/libsrtp.pdf. The PDF documentation is more up to date than this file. Installation: ./configure [ options ] # GNU autoconf script make # or gmake if needed; use GNU make The configure script accepts the following options: --help provides a usage summary --disable-debug compile without the runtime debugging system --enable-syslog use syslog for error reporting --disable-stdout use stdout for error reporting --enable-console use /dev/console for error reporting --gdoi use GDOI key management (disabled at present) By default, debbuging is enabled and stdout is used for debugging. You can use the above configure options to have the debugging output sent to syslog or the system console. Alternatively, you can define ERR_REPORTING_FILE in include/conf.h to be any other file that can be opened by libSRTP, and debug messages will be sent to it. This package has been tested on Mac OS X (powerpc-apple-darwin1.4), Cygwin (i686-pc-cygwin), and Sparc (sparc-sun-solaris2.6). Previous versions have been tested on Linux and OpenBSD on both x86 and sparc platforms. A quick tour of this package: Makefile targets: all, clean, ... README this file CHANGES change log VERSION version number of this package LICENSE legal details (it's a BSD-like license) crypto/ciphers/ ciphers (null, aes_icm, ...) crypto/math/ crypto math routines crypto/hash/ crypto hashing (hmac, tmmhv2, ...) crypto/replay/ replay protection doc/ documentation: rfcs, apis, and suchlike include/ include files for all code in distribution srtp/ secure real-time transport protocol implementation tables/ apps for generating tables (useful in porting) test/ test drivers Applications Several test drivers and a simple and portable srtp application are included in the test/ subdirectory. test driver function tested ------------------------------------------------------------- kernel_driver crypto kernel (ciphers, auth funcs, rng) srtp_driver srtp in-memory tests (does not use the network) rdbx_driver rdbx (extended replay database) roc_driver extended sequence number functions replay_driver replay database (n.b. not used in libsrtp) cipher_driver ciphers auth_driver hash functions The app rtpw is a simple rtp application which reads words from /usr/dict/words and then sends them out one at a time using [s]rtp. Manual srtp keying uses the -k option; automated key management using gdoi will be added later. usage: rtpw [-d ]* [-k [-a][-e]] [-s | -r] dest_ip dest_port or rtpw -l Either the -s (sender) or -r (receiver) option must be chosen. The values dest_ip, dest_port are the ip address and udp port to which the dictionary will be sent, respectively. options: -s (s)rtp sender - causes app to send words -r (s)rtp receive - causes app to receve words -k use srtp master key , where the key is a hexadecimal value (without the leading "0x") -e encrypt/decrypt (for data confidentiality) (requires use of -k option as well) -a message authentication (requires use of -k option as well) -l list debug modules -d turn on debugging for module In order to get random 30-byte values for use as key/salt pairs , you can use the following bash function to format the output of /dev/random (where that device is available). function randhex() { cat /dev/random | od --read-bytes=32 --width=32 -x | awk '{ print $2 $3 $4 $5 $6 $7 $8 $9 $10 $11 $12 $13 $14 $15 $16 }' } An example of an SRTP session using two rtpw programs follows: set k=c1eec3717da76195bb878578790af71c4ee9f859e197a414a78d5abc7451 [sh1]$ test/rtpw -s -k $k -ea 0.0.0.0 9999 Security services: confidentiality message authentication set master key/salt to C1EEC3717DA76195BB878578790AF71C/4EE9F859E197A414A78D5ABC7451 setting SSRC to 2078917053 sending word: A sending word: a sending word: aa sending word: aal ... [sh2]$ test/rtpw -r -k $k -ea 0.0.0.0 9999 security services: confidentiality message authentication set master key/salt to C1EEC3717DA76195BB878578790AF71C/4EE9F859E197A414A78D5ABC7451 19 octets received from SSRC 2078917053 word: A 19 octets received from SSRC 2078917053 word: a 20 octets received from SSRC 2078917053 word: aa 21 octets received from SSRC 2078917053 word: aal ... Implementation Notes * The srtp_protect() function assumes that the buffer holding the rtp packet has enough storage allocated that the authentication tag can be written to the end of that packet. If this assumption is not valid, memory corruption will ensue. * Automated tests for the crypto functions are provided through the cipher_type_self_test() and auth_type_self_test() functions. These functions should be used to test each port of this code to a new platform. * Replay protection is contained in the crypto engine, and tests for it are provided. * This implementation provides calls to initialize, protect, and unprotect RTP packets, and makes as few as possible assumptions about how these functions will be called. For example, the caller is not expected to provide packets in order (though if they're called more than 65k out of sequence, synchronization will be lost). * The sequence number in the rtp packet is used as the low 16 bits of the sender's local packet index. Note that RTP will start its sequence number in a random place, and the SRTP layer just jumps forward to that number at its first invocation. An earlier version of this library used initial sequence numbers that are less than 32,768; this trick is no longer required as the rdbx_estimate_index(...) function has been made smarter. * The replay window is 128 bits in length, and is hard-coded to this value for now.

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