md5

来源： https://stackoverflow.com/questions/39112096/calculate-md5-hash-of-a-large-file-using-javascript

来源： https://stackoverflow.com/questions/62475321/comparing-md5-of-downloaded-files-against-files-on-an-sftp-server-in-python

来源： https://stackoverflow.com/questions/62475321/comparing-md5-of-downloaded-files-against-files-on-an-sftp-server-in-python

来源： https://stackoverflow.com/questions/62475321/comparing-md5-of-downloaded-files-against-files-on-an-sftp-server-in-python

问题 I have a string that I'm encoding into base64 to conserve space. Is it a big deal if I remove the equal sign at the end? Would this significantly decrease entropy? What can I do to ensure the length of the resulting string is fixed? >>> base64.b64encode(combined.digest(), altchars="AB") 'PeFC3irNFx8fuzwjAzAfEAup9cz6xujsf2gAIH2GdUM=' Thanks. 回答1: Looking at your code: >>> base64.b64encode(combined.digest(), altchars="AB") 'PeFC3irNFx8fuzwjAzAfEAup9cz6xujsf2gAIH2GdUM=' The string that's being

问题 Packaging a folder on a SUSE Linux Enterprise Server 12 SP3 system using GNU tar 1.30 always gives different md5 checksums although the file contents do not change. I run tar to package my folder that contains a simple text file: tar cf package.tar folder Nevertheless, although the content is exactly the same, the resulting tar always has a different md5 (or sha1) checksum: $> rm -rf package.tar && tar cf package.tar folder && md5sum package.tar e6383218596fffe118758b46e0edad1d package.tar $>

问题 I am using consuming a C# web services and one of the parameters is sending a md5 hash. Java creates MD5 hash with signed (contains negative number in the byte array) and C# generates unsigned (contains no negative number in the byte array). I have gone through multiple similar question in Stack Overflow but did not find any to my satisfaction. All I need is unsigned byte array similar to the one c# generates. I have tried using BigInteger but I need it in an unsigned byte array since I need

问题 How can I open an image in PIL, then print the md5 hash of the image without saving it to a file and reading the file? 回答1: You could save the image to a io.BytesIO() , and take the md5 hash of its value: import hashlib import Image import io img = Image.open(FILENAME) m = hashlib.md5() with io.BytesIO() as memf: img.save(memf, 'PNG') data = memf.getvalue() m.update(data) print(m.hexdigest()) This will compute the same md5 hash as if you saved the Image to a file, then read the file into a

问题 Here are a few commands I am using to convert and transize a video in mp4 format to a m3u8 playlist. For a given input video (mp4 format), generate multiple video only segments with segment duration 30s ffmpeg -loglevel error -i input.mp4 -dn -sn -an -c:v copy -bsf:v h264_mp4toannexb -copyts -start_at_zero -f segment -segment_time 30 30%03d.mp4 -dn -sn -vn -c:a copy audio.aac Apply video filter (in this case scaling) on each segment and convert it to a m3u8 format ls 30*.mp4 | parallel

问题 In the browser, I read in a file using the JS FileReader().readAsBinaryString(). Using the CryptoJS library I can MD5 hash the data. This works fine but I do not know how to handle large files. E.g. Just reading a 2GiB file crashes the browser window. I can slice blobs from the file data and hash that as I go but wouldn't this prevent anyone else from verifying the same hash without following the same steps as me? Is there a way to get the md5 hash of a large file in this circumstance? How