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求教校验码算法

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楼主
发表于 2024-12-16 15:20:06 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
本帖最后由 xiaolang0302 于 2024-12-16 15:46 编辑

想研究一下校验算法，数据：0扇区
0 区块: 7C 08 1A AA C4 08 04 00 03 61 02 68 07 DE C7 1D
1 区块: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
2 区块: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
3 区块: FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

1扇区
0 区块: 24 12 09 12 34 18 C5 00 FF FF FF FF FF FF B7 BE
1 区块: 03 F2 02 00 00 00 00 00 00 00 00 00 00 00 00 00
2 区块: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
3 区块: 01 39 40 23 33 13 FF 07 80 69 FF FF FF FF FF FF

2扇区
0 区块: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 03 00
1 区块: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
2 区块: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
3 区块: 01 39 40 23 33 13 FF 07 80 69 FF FF FF FF FF FF

另一张卡：
0扇区
0 区块: E4 C1 76 FB A8 08 04 00 62 63 64 65 66 67 68 69
1 区块: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
2 区块: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
3 区块: FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

1扇区
0 区块: 24 12 10 12 34 14 61 00 FF FF FF FF FF FF 72 CB
1 区块: 03 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00
2 区块: 21 12 00 00 DE ED FF FF 21 12 00 00 06 F9 06 F9
3 区块: 01 39 40 23 33 13 FF 07 80 69 FF FF FF FF FF FF

2扇区
0 区块: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 03 00
1 区块: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
2 区块: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
3 区块: 01 39 40 23 33 13 FF 07 80 69 FF FF FF FF FF FF



1扇区0区块的最后2个字节应该是校验码，就是不太清楚哪些参与了校验，怎么算的呢？试了0区块校验和、crc16都不对，求大神指点


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 楼主| 发表于 2024-12-16 16:05:57 | 只看该作者
shxl850128 发表于 2024-12-16 15:49
算法没有，可以参考以下数据：
重新发卡：
0 扇区

多谢！我有工具能算出这个校验码来，就是想研究一下算法
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沙发
发表于 2024-12-16 15:49:19 | 只看该作者
本帖最后由 shxl850128 于 2024-12-16 15:51 编辑

算法没有，可以参考以下数据：
重新发卡：
0 扇区
7C 08 1A AA C4 08 04 00 03 61 02 68 07 DE C7 1D
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

1 扇区
30 12 30 12 34 28 29 00 FF FF FF FF FF FF 7B 6B
FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
01 39 40 23 33 13 FF 07 80 69 FF FF FF FF FF FF

2 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 03 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
01 39 40 23 33 13 FF 07 80 69 FF FF FF FF FF FF

3 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

4 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

5 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

6 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

7 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

8 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

9 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

10 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

11 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

12 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

13 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

14 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

15 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

原卡延期：
0 扇区
7C 08 1A AA C4 08 04 00 03 61 02 68 07 DE C7 1D
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

1 扇区
30 12 30 12 34 18 C5 00 FF FF FF FF FF FF D3 EF
FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
01 39 40 23 33 13 FF 07 80 69 FF FF FF FF FF FF

2 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 03 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
01 39 40 23 33 13 FF 07 80 69 FF FF FF FF FF FF

3 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

4 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

5 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

6 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

7 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

8 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

9 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

10 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

11 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

12 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

13 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

14 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF

15 扇区
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
FF FF FF FF FF FF FF 07 80 69 FF FF FF FF FF FF




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地板
发表于 2024-12-18 01:06:34 | 只看该作者
检测到以下信息：

系统名称:百达139
扇区 1
24 12 09 12 34 18 C5 00 FF FF FF FF FF FF B7 BE
03 F2 02 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
01 39 40 23 33 13 FF 07 80 69 FF FF FF FF FF FF

到期日期：2024.12.09
梯号：03F20200000000000000000000000000
楼层：FFFFFFFFFFFF
用户号：18C5
校验码：B7BE


未知系统扇区【2】

此数据首次被分析！
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5#
 楼主| 发表于 2024-12-18 10:29:57 | 只看该作者
fsjt7910 发表于 2024-12-18 01:06
检测到以下信息：

系统名称:百达139

这个校验码是怎么算的呢
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6#
发表于 2024-12-18 12:59:22 | 只看该作者
软件直接改，算法自行研究
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7#
发表于 2024-12-18 23:26:22 | 只看该作者
xiaolang0302 发表于 2024-12-18 10:29
这个校验码是怎么算的呢

校验码计算需要很多数据进行计算的，算法是没人免费教你的，想知道怎么算，就得花钱学习，要么就是自己研究
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8#
 楼主| 发表于 2024-12-19 10:51:12 | 只看该作者
fsjt7910 发表于 2024-12-18 23:26
校验码计算需要很多数据进行计算的，算法是没人免费教你的，想知道怎么算，就得花钱学习，要么就是自己研 ...

我挨个试了下这些字节，大概知道了哪些参与了计算，但还是没试出来算法
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9#
 楼主| 发表于 2024-12-19 11:34:26 | 只看该作者
shxl850128 发表于 2024-12-16 15:49
算法没有，可以参考以下数据：
重新发卡：
0 扇区

大佬你用的什么工具呢，要收费的吗?
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10#
发表于 2024-12-19 16:30:21 | 只看该作者
xiaolang0302 发表于 2024-12-19 11:34
大佬你用的什么工具呢，要收费的吗?

用的免费版麦田
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