http://rns.replaytv.net/cgi-bin/2.0/putsyslog.plIn this requst, the
X-Replay-Serial-Number
value is hashed and hex-encoded. Given a serial number, this value can be generated, but given just this value, returning to a serial number is basically impossible; I assume this is done for privacy, so that users can't be identified solely by the syslog message.
The serial number is hashed to generate a key; that key is used in a stream cypher similar to the one used in RDDNS (but with different constants) to encrypt a particular block of daata. An MD5hash is taken of the serial number and the encrypted block, and used as the obfuscated serial number.
#include <openssl/md5.h> static unsigned char obfusc_plaintext[32] = { 0x5b, 0xaf, 0x2f, 0x8b, 0x07, 0x03, 0x5e, 0xad, 0x05, 0xe3, 0x87, 0xdc, 0xbb, 0xe4, 0x5f, 0xef, 0xbc, 0x8c, 0x9d, 0x01, 0xd3, 0x96, 0xeb, 0xe9, 0x7f, 0x23, 0x46, 0xdb, 0xed, 0x2a, 0xd0, 0x87 }; static void obfuscate_sn(unsigned char * source, unsigned char * dest) { int i; MD5_CTX md5ctx; unsigned char cyphertext[32]; unsigned long k; k = 1; for (i = 0; i < strlen(source); i++) k = k * 0x159c1 + source[i]; for (i = 0; i < 32; i++) { cyphertext[i] = obfusc_plaintext[i] ^ k; k = k * 0x17573 + 0xf750; } MD5_Init(&md5ctx); MD5_Update(&md5ctx, source, strlen(source)); MD5_Update(&md5ctx, cyphertext, 32); MD5_Final(dest, &md5ctx); }The POSTed data has content-type
vnd.replay.syslog
. Its format is the same as the on-system SysLog.
There is no body in the response; the only purpose is to make the system log available to Replay.
-- ToddLarason - 17 Mar 2002
Topic RnsPutSyslog . { Edit | Attach | Ref-By | Printable | Diffs | r1.4 | > | r1.3 | > | r1.2 | More } |
Revision r1.4 - 02 Jun 2002 - 00:09 GMT - ToddLarason Parents: WebHome > RnsProtocol |
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Replay.RnsPutSyslog moved from Replay.RnsSyslog on 17 Mar 2002 - 09:23 by ToddLarason - put it back |