Questions tagged [sha1]
The sha1 tag has no usage guidance.
30
questions
40
votes
7
answers
68k
views
Is there a built-in method for computing an SHA-1 or MD5 hash in Windows 7? [duplicate]
Is there a built-in method for computing an SHA-1 or MD5 hash in Windows 7?
- 1,752
35
votes
8
answers
14k
views
Can a file be maliciously changed in a way that maintains its original SHA-1 Hash?
According to this article, and many others, SHA-1 is not secure.
In my case, I am not concerned about passwords or digital certificates. I am concerned about file integrity.
Is it reasonably ...
- 11.4k
32
votes
1
answer
63k
views
How to check SSH key version locally
In general i'm searching for a method to show information about a private or public SSH key without contacting a server, like keylength, algorithm, ssh version and so on. Especially I like to know if ...
- 423
25
votes
3
answers
17k
views
How can zero byte files generate a hash value?
How can a zero byte text file generate a hash when hashed with sha1sum, sha256sum etc? What data are the programs hashing to generate a hash value?
Ta
- 583
18
votes
1
answer
23k
views
How to check if your ssh keys are in the ssh-rsa2 format?
So recently there were news of OpenSSH dropping support for SHA-1 logins and I am trying to understand which format they are referring to. Since years i've been generating keys via ssh-keygen -t rsa -...
- 291
13
votes
2
answers
15k
views
Why are Root CAs with SHA1 signatures not a risk
Take Verisign's website, for example, which has a root CA with a sha1 hash signature. Am I mistaken with understanding that were one to find a collision, they could impersonate the Verisign root CA, ...
- 271
5
votes
2
answers
6k
views
Installing sha1sum on git-bash (MinGW)
I've been using git-bash on Windows 7 a lot. I gather it is a wrapper of MinGW. It has md5sum but not sha1sum. I'd like to install sha1sum, but I can't figure out how.
When I try mingw-get, it says "...
- 1,101
5
votes
1
answer
7k
views
Alternative to xxd that returns bytes?
I am on Mac OS X 10.8.2, running a compiled copy of xxd v1.10 (source code) as well as the copy of xxd that comes preinstalled on OS X.
I am trying to generate a Base64-encoded SHA1 signature via a ...
- 891
4
votes
3
answers
3k
views
Why Outlook client's S/MIME settings use SHA1 as the default Hash Algorithm for digital signing a message?
can someone tell why Outlook client S/MIME settings use SHA1 as the default Hash Algorithm?
Doesn't that put the certificate private key to a risk when weak algorithm is used? Or am I ...
- 41
4
votes
1
answer
237
views
Different SHA1 result every time I check, bad drive?
I was attempting to download and run the Windows 10 Insider Preview, but after a few failed boots and installation errors, I decided to test the SHA1 sum before committing.
I noticed that every time ...
- 142
2
votes
3
answers
788
views
why do we need SHA1 checksum?
In this page I saw the SHA1 checksum.
I know it's a hash algorithm, but I don't know why we need it for download code.
So I clicked "what's this?" but got no any more information.
It's hash, so what?...
- 155
2
votes
1
answer
5k
views
How reliable are SHA1 sum and MD5 sums on very large files?
I constantly transfer disk images and virtual machine images (usually 800GB to nearly 1 TB per file) to a cloud server via rclone using SSH, and I wonder how reliable are sha1sum and md5sum when it ...
- 165
2
votes
1
answer
5k
views
How to get sha1sum to work on Mac OS X?
I have an application that I'm porting and as part of the test suite, I run sha1sum. I'd like to have test code that works on all my platforms and not vary across platforms. Mac OS X, is the first ...
- 7,968
2
votes
1
answer
1k
views
Allocate PCR banks for TPM in Linux
I want to have all PCRs (0-23) in sha1 and sha256 banks, but now I only have sha256 set and sha1 is empty but exists, tpm2_pcrread outputs:
sha1:
sha256:
0 : ...
- 123
2
votes
1
answer
360
views
Sha1Sum on kali.org
I am unable to download kali linux from their official website kali.org. I try to verify the sha1sum but all I get is invalid
https://gyazo.com/2e02792c685fbd2ebfd50e04fe218501.
Any ideas? I can ...
