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2
votes
3answers
24 views

How to create a SHA256SUMS file?

I can check the content of several files in a directory against checksums contained in a file named for example SHA256SUMS with sha256sum -c SHA256SUMS. Is there an easy way to generate a SHA256SUMS ...
1
vote
2answers
38 views

How to recursively create a hash file (sha512sum) inside each folder of a tree?

For a given tree, say /var/ftpd, how do I create a hash file in each folder of that tree with the contents of that folder within a given tree? sha1sum and sha512sum does not have recursion options. ...
1
vote
1answer
39 views

add hash to a file using command line

I am writing a Windows batch file to copy a file from my computer to a network location, but before doing this, I need to add a hash for it using the command line. Assuming that my file is named ...
0
votes
0answers
10 views

Alternative of arch_fast_hash in Linux kernel v3.19 and above

To find the hash value of a given buffer, I used arch_fast_hash function present in Linux kernel v3.16 declared in include/linux/hash.h and defined in linux/lib/hash.c. But in Linux kernel v3.19, ...
1
vote
3answers
71 views

Should I use an SSD or HDD to hash lots of data?

Purely in terms of drive life which will be better for hashing hundreds of thousands of files - SSD or HDD? Background - My HDD has files which I want to hash and compare with data in a spreadsheet, ...
30
votes
8answers
7k 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 ...
0
votes
0answers
33 views

openSSL: How to specify the signature hash algorithms I will accept?

Using openSSL, on a TLS client, I specified a unique cipher suite with SSL_CTX_set_cipher_list(). When I use wireshark to look at the messages, I see in the Client Hello message, the cipher suites ...
0
votes
0answers
13 views

Why does DHT hash the filenames?

One of the objectives of DHT is to partition the keyspace, so each node (or group of them) has a share of it. To do so, it hashes the filename of a file that wants to be saved and stores it in the ...
1
vote
2answers
104 views

Why does cygwin sha512 create different checksums depending on terminal?

I'm using Windows 7 and have both Cygwin and the ming-based Git command line tool. When I issue the command: c:\>echo -n hello | e:\cygwin\bin\sha512sum from the Windows cmd, it generates ...
0
votes
3answers
118 views

Recursive command-line md5 generator and verifier

I want to write a batch script that has the ability to generate and verify md5 hashes of an entire directory tree. Is there any program like this for windows? I can find many md5 programs, but they ...
0
votes
1answer
70 views

BASH associative array rearrange keys

I am running into a weird issue with associative arrays in bash. I have the following files in a directory: ls -lart drwxr-xr-x. 3 root root 4096 Feb 9 11:14 .. -rw-r--r-- 1 root root 3275 Feb 9 ...
-5
votes
1answer
223 views

How to decrypt a password hash? [duplicate]

I have a MacBook Air running on OS X 10.9, and I need to recover a password. I figured out the hash, which is 554bc9ec674ff1476b67a02518cd9e4a, but I don't know how to decrypt it. This is super ...
0
votes
1answer
42 views

Compare two instances of Windows based on their state (Hashing)

I don't know how to better ask this but let me give an example. Suppose that I install a Windows 8 and do some updates, install some software, and copy some files. Can I now get a hash code for the ...
2
votes
1answer
63 views

Inconsistencies on MD5 checksums

I am trying to obtain the md5 hash of a string. Said string consists of only uppercase and lowercase letters and digits. No other characters, including spaces and newlines. The string is inputted via ...
0
votes
1answer
868 views

How to rehash files

I downloaded a game from torrent (via my android phone) For My windows 8 (32 bit) pc After Downloading I Needed To Intall The Game But In Steps To run The Game it is said to Installation: ...
0
votes
1answer
422 views

What is the hash algorithm for owncloud passwords

I need to know the algorithm used to generate the password hashs that look like this: $2a$08$ztQUBr1vx97Rc9MiJVr05.LZWg92jGYkRFEJViHhfZjaWpB0xfgGu It looks like bcrypt to me but when I hashed my ...
0
votes
1answer
32 views

Looking for new way to create password [closed]

I tend to use same 2-3 passwords for all sites and want to change that but want to make sure I standardize my new approach as well. Looking at password hashing and I know very little other than what ...
0
votes
0answers
56 views

How do I check integrity of a file from DreamSpark?

I have a very unstable connection and it cut off multiple times while downloading Windows 8.1 using Microsoft's SDM, so I'm kind of concerned to how I can check to see if the file is still intact once ...
3
votes
1answer
359 views

How to configure Firefox to warn or reject SHA-1 signed certificates?

Is there a way to configure Firefox either through an add-on, plugin, or other setting that will either reject or warn whenever it encounters a certificate that has been signed using SHA-1?
1
vote
1answer
474 views

/etc/shadow in old format, where is salt stored?

In /etc/shadow I have entries such as admin:YtChlvAGYzva2:16318:0:99999:7:::. I know the original password and would like to generate the same hash somehow. However, running openssl passwd -crypt ...
1
vote
2answers
61 views

Is encrypting the password legal? Not using any hash methods [closed]

I tried to login to my college social network site but I forgot my password so I clicked the "Forgot Password" link then an email has been sent. It stated in that email my username and the super duper ...
0
votes
1answer
53 views

Mail server that supports duplicate file detection?

AFAIK, Google mail servers (gmail) can detect duplicate files. For example, if you receive a big file as attachment that exactly exists in someone else's inbox, google avoids storing the file twice, ...
2
votes
1answer
37 views

How can hashes be used to efficiently keep track of version changes in documents?

I have heard that open source software uses these. Are they computed on an entire file? Like if you changed one letter of Moby Dick the hash would be different? I am curious about these for keeping ...
0
votes
1answer
71 views

Blake2 installation in linux?

I was trying to install from source BLAKE2 hash function in Ubuntu, but I do not know how. I don`t know how to use these makefiles with .c and .h files . Any help? https://blake2.net/
0
votes
1answer
38 views

Kernel-level pass-through method to change file hashes

I'm searching for any kernel-level mechanism that is pass-through and will change file hashes by either encrypting file contents or appending data. The most obvious solution is encryption, but I can't ...
2
votes
4answers
628 views

How do I verify a GPG symmetrically encrypted file?

I created an encrypted file with symmetric encryption. gpg -c 50GBfile Now I want to delete the original. Before I delete the original, I want to verify the integrity of the encrypted file. ...
0
votes
1answer
54 views

Network Password Recovery

I am trying to recover a password for my network. It's set up like this: a network of computers, and a central server which authenticates login-passwords entered, and is also a network share. Username ...
0
votes
1answer
1k views

Adding peers from another torrent with different hash values

I found two exact torrent files (same in size) with two different hash values. Since the contents of the files were the same and the number of seeds was very less, I thought that I could connect the ...
1
vote
3answers
232 views

How can SHA512 make a long string into a short string

I´m wondering how this random and very long string €£$€@]}$€{[$£}]£[€€£$€@]}$€{[$£}]£[€]}€486745896€$@fdhhsgpbkjhYUVYUDTYhµµµ½789ty45thhrhYUFVYU7645646f8cgI JKHVruxty dw78fg f 9w64f ...
0
votes
1answer
32 views

Restore Partiton only on change

I have wrote a script that restores a partition from a previous made dd dump. Basically it calls this line: dd if=stored_image.img of=/dev/sdb1 bs=1M The restore for this takes about 5 Minutes ...
1
vote
1answer
142 views

Checksums for Win7 installation files?

OK many thanks to the guys on Where do I download Windows 7 (legally from Microsoft)? who provided links to d/l the WIn7 .ISO images. Now where can we find a similar listing of the md5 hashes for ...
0
votes
3answers
802 views

Identify Known Malware By Hash (MD5) Across Network

I need to design a solution that will allow me to submit a series of MD5 hashes and then be alerted if these hashes are found on any machine (Windows) on the network. I'm open to existing solutions ...
0
votes
0answers
124 views

want to make sure two or three folders are identical/same

I checked two/three folders with two software called Beyond Compare and Araxis Merge. Those two software says these folders identical. I tried another way. Compress these folders and compare hash ...
0
votes
1answer
32 views

How can a user login to a workstation if the DC is down?

Is it possible to do such thing? Because the hash of that users' password is normally stored on the DC.. And if it is, where are the users credentials stored on that workstation?
0
votes
1answer
20 views

Where on the DC are password's hashes saved?

Like title says, where are the password's hashes from all the computers on the domain saved on the DC? And where is that file on the dc's filesystem?
0
votes
2answers
259 views

2 users that have the same passwords on windows 7. will the hashes in the SAM file be the same?

Let's say I have a computer with win7 and I made 2 different accounts. Now I've set the same password for both accounts. My question is whether the hashes of the passwords in the SAM file will be ...
3
votes
1answer
130 views

Any examples of duplicate MD5 Hashes?

I was wondering, as it is theoretically possible to have duplicate MD5 hashes, are there any known examples of this, or is it all just theoretical?
0
votes
1answer
978 views

Location of SHA512 Haslist on Mavericks>

I'm trying to find the SHA512 hash of the user passwords on OS X Mavericks (10.9.1), I'm aware that you can get the user .plist from: /private/var/db/dslocal/nodes/Default/users/{username}.plist ...
2
votes
0answers
67 views

Embedding index in pdf files [closed]

Are there any (free) tools for building an index of a pdf and embedding it in the file in order to speed up searching? I know Acrobat Pro has a catalog option but I was hoping for a free tool and ...
1
vote
1answer
52 views

How does applications read my hashed passwords?

mpdas (last.fm scrobbler for mpd) forces one to write password hashed in md5. But if it's hashed, how does it login to last.fm? Isn't hash function one-way only?
1
vote
1answer
3k views

How to make sure a downloaded .iso matches a hash value?

I have download the .iso file as guided here and there is part that says to verify the downloaded .iso with CRC or SHA-1 hash value. Make sure that the CRC and SHA1 hash values of the downloaded ...
1
vote
2answers
902 views

Is there a way to search for files by hash value?

Is there a way I can have a hash value as input when searching for files and a complete list of files and their locations as output? This could be helpful when trying to pin point file duplicates. I ...
0
votes
0answers
50 views

Deleting sentences in database file

I'm writing a MD5 based antivirus, and my friend send to me a document with thousands of samples and their MD5. All is fine, but I have to delete all sentences what contain "File does not exists:" ...
2
votes
1answer
3k views

Can Robocopy ensure file integrity?

I am trying to copy a large file, around 10G size, over Internet using Robocopy, but I am a bit concerned about the file integrity. So can I just trust Robocopy to ensure file integrity or I need to ...
1
vote
1answer
184 views

Is it possible to write an app that ignores the zip archive password?

I am not sure how password protected archives work but is it the programs enforcing the protection or is it the way the format works where if it's password protected, there is no way to extract the ...
4
votes
1answer
3k views

“line length exception” in hashcat (kali linux)

I've received this line: root:$1$25A116L54$7/IbiL1ZsUyPwYBx/zuNv/ and asked to crack the password. So, I created a crack.hash file and put the following in it: $1$25A116L54$7/IbiL1ZsUyPwYBx/zuNv/ ...
0
votes
1answer
39 views

Probability of colission when hash is half the size of data?

If i had a password of 100 bits, and hashed it with a hash function that returned a 50 bit key, now i brute force it until a get a string that produces a matching hash, is there now a 50% chance that ...
2
votes
2answers
769 views

Obtain SHA256 Value for Subject Key Identifier

Using Keytool we can view the details of a Keystore with the command keytool -list -v -keystore <KeystoreName> This returns a set of values including a Subject Key Identifer ...
1
vote
2answers
9k views

Strongest Encryption and Hashing Algorithms Today [closed]

Basically, I want to know what the strongest (hardest to break) encryption algorithm today is. The same goes for the hashing algorithm. Let's say I pick a super-strong password too (bonus: how long ...
1
vote
2answers
494 views

is it possible to create custom columns (such as checksum/hash column) in windows explorer?

Is it possible to create my own custom column in Windows Explorer when listing files in "Details" mode? Right now, I have: Name Date Modified Type Size Hash I would like ...