Bug #73127 [Com]: gost-crypto hash incorrect if input data contains long 0xFF sequence

Edit report at https://bugs.php.net/bug.php?id=73127&edit=1 ID: 73127 Comment by: iofeed at yandex dot ru Reported by: grundik at ololo dot cc Summary: gost-crypto hash incorrect if input data contains long 0xFF sequence Status: Open Type: Bug Package: hash related Operating System: Linux PHP Version: 7.0.11 Block user comment: N Private report: N New Comment: This problem is easily reproduced when you try to create hash for an XLS file. Previous Comments: ------------------------------------------------------------------------ [2016-09-20 12:11:47] grundik at ololo dot cc Description: ------------ If input data contains long sequence of 0xFF bytes (40+ bytes), then calculated hash using gost-crypto algorithm becomes incorrect. That affects at least these functions: * hash; * hash_file; * hash_stream. Test script: --------------- $test = str_repeat("\xFF", 40); echo hash('gost-crypto', $test); Expected result: ---------------- 231d8bb980d3faa30fee6ec475df5669cf6c24bbce22f46d6737470043a99f8e Actual result: -------------- 8e0be2995864c40f8111feaa9df6fc4830632fdf61e365d9feca87f1e485d1f7 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=73127&edit=1