分析Oracle SYS_GUID()

时间:2016-02-05 10:01:43

标签: oracle guid

我有一些包含14,800个GUID的数据,这些GUID是由使用SYS_GUID()的Oracle数据库中的第三方生成的。 GUID仅在7-12位置变化几个字节,这似乎是某种计数器。

示例,使用格式化来隔离计数器部分

FC82E8-BAC381-7272E0438DC611AC3F8D
FC82E8-BAC382-7272E0438DC611AC3F8D
FC82E8-BAC383-7272E0438DC611AC3F8D
FC82E8-BAC384-7272E0438DC611AC3F8D
FC82E8-BAC385-7272E0438DC611AC3F8D
FC82E8-BAC386-7272E0438DC611AC3F8D
FC82E8-BAC387-7272E0438DC611AC3F8D
FC82E8-BAC388-7272E0438DC611AC3F8D
FC82E8-BAC389-7272E0438DC611AC3F8D
FC82E8-BAC38A-7272E0438DC611AC3F8D

只有少数独特的开端

["0D3EDF","18257D","1827AE","1827BF","1828E0","182C62","182C7D","1839A0","183A31","183BEE","183E6D","183FA4","184012","1AD4F9","1AD59B","1AD59F","1AD70A","1AD731","1AE5A9","1AE5AD","1B4F17","1B615F","1B7814","1B8793","1B8C6A","1B8C8C","1B9B5C","1B9B8A","1BDA52","1BDA60","1BDA70","1BEB88","1BEC7D","1C7AD1","1C8E26","1C8E4E","1C8E8E","1C8FA6","1E0C80","1E32D3","2052E1","2052E7","2052EC","21FC74","233BC2","233C06","24E2C7","288030","2938B8","CFB613","D25095","D46CB5","D48475","DD5190","ECB728","F1CED9","FC82E8"]

并且只有几个独特的结局

["02CBE053802011AC2597","04CFE053802011AC2355","062EE053812011AC598F","0656E0438DC611AC34B2","07A5E053802011AC3DBC","0894E0536A2011AC73AB","0930E053802011ACD547","0B1BE053692011ACF2E0","0EA9E053802011AC44C8","0ECAE053812011ACF695","0F83E053692011AC3C24","111DE053812011AC1AAB","14C9E053802011AC49D3","16DCE0438DC611AC6AA4","1976E0536A2011AC9642","19E0E0536A2011AC637D","1A7EE053802011ACD813","1D58E0536A2011AC6A99","2045E053802011AC386E","20B2E053692011ACABF8","2A68E053692011AC4A9F","2BA5E053812011AC0D9A","2DDDE053802011AC0D83","2FA9E0433CC411AC9094","2FAFE053812011ACB024","306DE053802011ACBA9C","3225E053802011AC6040","3254E0433CC411ACFD01","32B8E053812011AC69A4","32F0E053692011ACC2A9","3466E0536A2011AC5567","35A1E053812011ACA6C9","3687E053692011AC9DB1","38C7E0536A2011AC679B","39E8E053692011ACC84F","39EAE053692011ACEC25","3A31E053692011AC5D6E","3E9FE0536A2011AC5C60","3EEEE053812011AC0564","44A6E053802011AC7839","4623E053802011ACCB8A","481AE053812011AC9FC9","4919E0433CC411ACF60C","49B9E0536A2011ACD453","4D02E053812011AC92B6","4DF7E053692011AC7BB1","4EB5E053812011AC125C","5092E053692011ACED10","5907E053802011AC163F","62C7E053812011ACBCE9","6307E0536A2011AC0EC2","6322E053812011AC153B","63B1E053812011ACF40B","64ADE0536A2011ACD703","65BDE053802011AC2514","66B8E053692011AC7118","673AE053802011AC094D","694EE0433CC411AC73CC","6CECE053802011ACB8A4","7272E0438DC611AC3F8D","741AE0536A2011AC67D2","75C3E053812011AC5BD3","7952E0433CC411ACA994","79A9E053692011AC295F","7BB9E0533CC711AC4D20","7D39E0536A2011ACE93C","7D9CE053692011AC993C"]

我找不到除official documentation以外的SYS_GUID的任何文档

  

在大多数平台上,生成的标识符由主机组成   标识符,进程或线程的进程或线程标识符   调用函数和非重复值(字节序列)   对于那个过程或线程。

我尝试过搜索源代码和一些分析 - 包括转换为字符串,反转,转换为十进制等,以查看是否有任何可识别的IP方案等。

我真的想知道哪些字节是主机,以什么形式 - 例如MAC / IP,它是线程和进程等,任何哈希MD5 / SHA等的使用。我完全理解这是一个非常具体的实现细节,可能在Oracle版本之间有所不同,但我很感兴趣。

0 个答案:

没有答案