crc

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Improve speed on Crc16 calculation

I need to calculate Crc16 checksums with a $1021 polynom over large files, below is my current implementation but it\'s rather slow on large files (eg a 90 MB file takes about 9 seconds).[详细]

2023-01-17 16:55 分类：问答
CRC-16 with 0xA001 polynomial

I would like to compute the CRC-16 checksum of a byte array, with 0xA001 polynomial. But I don\'t really know how to do it in Java, and how the given polynomial is used. Is it some kind of special val[详细]

2023-01-17 08:26 分类：问答
crc64-jones or crc64-ecma available in ruby?

I read a paper that explained that using CRCs generated from the CRC-64-ISO algorithm as hash keys is likely to result in collisions for large sets of data.Postmodern\'s Ruby CRC project is pretty int[详细]

2023-01-16 14:53 分类：问答
How to get file crc/checksum in asp.net

Given开发者_高级运维 a file on the local filesystem: FileInfo file = new FileInfo(localFilename);[详细]

2023-01-14 22:15 分类：问答
Best way to test CRC logic?

How can I verify two CRC implementations will generate the same checksums? I\'m looking for an exhaustive implementation evaluating me开发者_JAVA百科thodology specific to CRC. You can separate the pr[详细]

2023-01-13 13:44 分类：问答
I need CRC Reverse Code for my CRC64 Checksum Coding [closed]

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical andcannot be reasonably answered in its current form. For help clari[详细]

2023-01-12 08:16 分类：问答
How do I copy data from a defective DVD to my hard disk using Perl?

The situation is this: My system (Win XP Pro) is unable to copy a huge video file (around 6 gigs) from a DVD disk, which might be defective, scratched or whatever but which can be played back with mpl[详细]

2023-01-08 03:23 分类：问答
CRC-16-ANSI library for for Java/Groovy?

I need to compute the CRC-16 for arbitrary strings in a mixed java/groovy application.Specifically, I need the CRC-16-ANSI aka CRC-16-IBM variant (see http://en.wikipedia.org/wiki/Cyclic_redundancy_ch[详细]

2023-01-06 10:57 分类：问答
CRC-CCITT (XModem) implementation in javascript

i\'m trying to implement a CRC-CCITT (XModem) check in javascript without success. I need it in order to send socket str开发者_如何转开发ing into a controller via RS232.[详细]

2023-01-05 16:21 分类：问答
Hamming distance and CRC

How to find the Hamming distance 开发者_运维技巧of a code generated by a certain CRC? Assume that I have a generating polynomial of order, say, 4 and 11 bits of data.[详细]

2023-01-04 09:13 分类：问答