python Programming Glossary: crc

http://stackoverflow.com/questions/1117958/how-do-i-use-raw-socket-in-python

unpacking of binary data # and 'binascii' for 32 bit CRC src_addr x01 x02 x03 x04 x05 x06 dst_addr x01 x02 x03 x04 x05..

Unzipping part of a .gz file using python

http://stackoverflow.com/questions/1732709/unzipping-part-of-a-gz-file-using-python

the first 2000 bytes off this file. I am running into CRC check failed error cuz I guess the gzip CRC field appears at.. running into CRC check failed error cuz I guess the gzip CRC field appears at the end of file and it requires the entire.. Is there a way to get around this I dont care about the CRC check. Even if I fail to decompress cuz of bad CRC that is OK...

Create a zip file from a generator in Python?

http://stackoverflow.com/questions/297345/create-a-zip-file-from-a-generator-in-python

self._writecheck zinfo self._didModify True zinfo.CRC CRC 0 zinfo.compress_size compress_size 0 self.fp.write zinfo.FileHeader.. self._writecheck zinfo self._didModify True zinfo.CRC CRC 0 zinfo.compress_size compress_size 0 self.fp.write zinfo.FileHeader.. 1024 8 if not buf break file_size file_size len buf CRC binascii.crc32 buf CRC if cmpr buf cmpr.compress buf compress_size..

python crc32 woes

http://stackoverflow.com/questions/5047494/python-crc32-woes

question how come crc32 x00 is not 0x00000000 The basic CRC algorithm is to treat the input message as a polynomial in GF.. input message as a polynomial in GF 2 divide by the fixed CRC polynomial and use the polynomial remainder as the resulting.. and use the polynomial remainder as the resulting hash. CRC 32 makes a number of modifications on the basic algorithm The..

Hash algorithm for dynamic growing/streaming data?

http://stackoverflow.com/questions/5865824/hash-algorithm-for-dynamic-growing-streaming-data

noted you can also use almost any checksuming algorithm CRC Adler Fletcher but they do not protect you well from the intentional..

How to reliably generate Ethernet frame errors in software?

http://stackoverflow.com/questions/6329583/how-to-reliably-generate-ethernet-frame-errors-in-software

# Ethertype 2 bytes # Payload 40 to 1500 bytes # 32 bit CRC chcksum 4 bytes # # s socket AF_PACKET SOCK_RAW s.bind eth1..