如何MD5部分dd图像

Question

我收到了一张SD卡的.dd图像。随之而来的是整个文件的MD5校验和，以及似乎是部分文件的MD5和，确切地说是每千兆字节。有人可以告诉我如何检查部分.dd图像的MD5总和吗？md5-sums：0 - 1073741824: ba2b47b7daa8e17f06d654fd4b65ebe01073741824 - 2147483648: cfa0a3db105c939db30506cd320f7e6c2147483648 - 3221225472: 7c26b8750884026ee625928ff4eb56a23221225472 - 4294967296: 97371e4896c4237f13688caba3be6fd04294967296 - 5368709120: 591aef42a58947529dcc1e69833db41d5368709120 - 6442450944: 18e133d3d403e9f3fe6de83dbeb854466442450944 - 7516192768: cfa0a3db105c939db30506cd320f7e6c7516192768 - 8589934592: 7c26b8750884026ee625928ff4eb56a28589934592 - 9663676416: 97371e4896c4237f13688caba3be6fd09663676416 - 10737418240: 591aef42a58947529dcc1e69833db41d10737418240 - 11811160064: 18e133d3d403e9f3fe6de83dbeb8544611811160064 - 12884901888: cfa0a3db105c939db30506cd320f7e6c12884901888 - 13958643712: 7c26b8750884026ee625928ff4eb56a213958643712 - 15032385536: 97371e4896c4237f13688caba3be6fd015032385536 - 15931539456: dbde266ea52d67cb3c125cf418161e29

Answer 1

您可以尝试类似的方法：

dd if=your.bin ibs=1 count=1073741824 | md5sum

dd if=your.bin ibs=1 skip=1073741824 count=1073741824 | md5sum

...

如果可行，您可以尝试通过更改块的大小来优化dd的速度：

dd if=your.bin bs=1024 count=1048576 | md5sum

dd if=your.bin bs=1024 skip=1048576 count=1048576 | md5sum

...