ID: 45028 Updated by: [EMAIL PROTECTED] Reported By: jfrusciante at tiscali dot it -Status: Assigned +Status: Closed Bug Type: *Encryption and hash functions Operating System: * PHP Version: 5.2.6 Assigned To: scottmac New Comment:
This bug has been fixed in CVS. Snapshots of the sources are packaged every three hours; this change will be in the next snapshot. You can grab the snapshot at http://snaps.php.net/. Thank you for the report, and for helping us make PHP better. Previous Comments: ------------------------------------------------------------------------ [2008-08-11 11:07:42] [EMAIL PROTECTED] Mike, can you confirm that this patch is correct? http://dev.daylessday.org/diff/bug45028.diff ------------------------------------------------------------------------ [2008-05-17 16:03:25] jfrusciante at tiscali dot it Description: ------------ When I use dechex() to convert a crc32(), and when I directly use hash("crc32b", ...), I do not get the same output. In particular, the endianness of the hash() output seems inverted. In other words: the output of crc32() seems to be correct in its integer representation (I compared it with Python implementation), but converting it to hexadecimal (with dechex() or with any calculator) produces a hex string inverted in its endianness respect to the output of hash('crc32b', ...) with the same input. Reproduce code: --------------- printf("dechex(crc32(\"AAAAAAAA\")): ". dechex(crc32("AAAAAAAA")). "<br><br>"); printf("hash(\"crc32b\",\"AAAAAAAA\"): " .hash("crc32b", "AAAAAAAA") ."<br>"); Expected result: ---------------- dechex(crc32("AAAAAAAA")): 79b71c0a hash("crc32b","AAAAAAAA"): 79b71c0a (or dechex(crc32("AAAAAAAA")): 0a1cb779 hash("crc32b","AAAAAAAA"): 0a1cb779 I think the first two are the right ones) Actual result: -------------- dechex(crc32("AAAAAAAA")): 79b71c0a hash("crc32b","AAAAAAAA"): 0a1cb779 Please note that the difference is only in the bytes order. "0a-1c-b7-79" is like "79-b7-1c-0a" with inverted endianness, while both lines should output the same values despite different architectures. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=45028&edit=1
