Is calculating an MD5 hash less CPU intensive than SHA-1 or SHA-2 on "standard" laptop x86 hardware? I'm interested in general information, not specific to a certain chip.
UPDATE:In my case, I'm interested in calculating the hash of a file. If file-size matters, let's assume its 300K.
I'm making a site where you can book a cabin. One of the requirements was to make a reaction system where an admin gets an e-mail with a link. If he clicks this link, the reaction will be posted on the site. I'm almost done with this, I only have one question:
In this link, how can i retrieve the part behind
?reactie=?I could only find how to retrieve more of the url, but I only want the md5.
I am looking to use Java to get the MD5 checksum of a file. I was really surprised but I haven't been able to find anything that shows how to get the MD5 checksum of a file.
How is it done?
need a logic to download file when i run my android app from same link for example
in my splash activity I download examplefile.doc only on the first launch of the application
but i want a efficient way of check if examplefile.doc is updated without downloaded examplefile.doc again and comparing md5 values.
must be efficient because i must do this for a large amount of files
Is there some way i could check if the file is the same one that i have previously downloaded and only download if the file is a newer version.
Is writing a
.tar.gz file purely sequential?
When copying a large file, I started compressing it, and while it was compressing,
scping it to a different machine. Afterwards I checked the
md5sum on both machines, and they did not match. I guess it wasn't the best idea ever to start reading the
.tar.gz before it was finished. I supposed that writing that
.tar.gz file would only append to the end so that reading it would work out fine.
Does anybody know anything about the mechanics of this? What specifically is happening here?