Questions tagged [sha1]
SHA-1 is a cryptographic hash function designed by the U.S. Government as a Federal Information Processing Standard. Recently, collisions have been detected, meaning that SHA1 is becoming more vulnerable to attacks, and its use for protecting data is not recommended.
sha1
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SHA-1 fingerprint of keystore certificate
Is the method for getting an SHA-1 fingerprint the same as the method of getting the fingerprint? Previously, I was running this command:
It's not clear to me if the result I'm getting is the SHA-1 ...
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Hash collision in git
What would actually happen if I had a hash collision while using git?
E.g. I manage to commit two files with the same sha1 checksum,
would git notice it or corrupt one of the files?
Could git be ...
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Simple (non-secure) hash function for JavaScript? [duplicate]
Possible Duplicate:
Generate a Hash from string in Javascript/jQuery
Can anyone suggest a simple (i.e. tens of lines of code, not hundreds of lines) hash function written in (browser-compatible) ...
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Hashing a file in Python
I want python to read to the EOF so I can get an appropriate hash, whether it is sha1 or md5. Please help. Here is what I have so far:
import hashlib
inputFile = raw_input("Enter the name of the ...
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Generate SHA-1 for Flutter/React-Native/Android-Native app
I'm trying to generate a SHA-1 for a Flutter app, for Android studio to support Google Sign in, but I don't know how to do that, I saw some posts that indicate to run a command, but there I need a jks ...
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Java String to SHA1
I'm trying to make a simple String to SHA1 converter in Java and this is what I've got...
public static String toSHA1(byte[] convertme) {
MessageDigest md = null;
try {
md = ...
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162
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Storing SHA1 hash values in MySQL
I have a simple question which occured when I wanted to store the result of a SHA1 hash in a MySQL database:
How long should the VARCHAR field be in which I store the hash's result?
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How to convert byte array to string in Go [duplicate]
[]byte to string raises an error.
string([]byte[:n]) raises an error too.
By the way, for example, sha1 value to string for filename.
Does it need utf-8 or any other encoding set explicitly?
Thanks!
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How to generate random SHA1 hash to use as ID in node.js?
I am using this line to generate a sha1 id for node.js:
crypto.createHash('sha1').digest('hex');
The problem is that it's returning the same id every time.
Is it possible to have it generate a ...
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Is SHA-1 secure for password storage?
Conclusion: SHA-1 is safe against preimage attacks, however it is easy to compute, which means it is easier to mount a bruteforce or dictionary attack. (The same is true for successors like SHA-256.) ...
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Is calculating an MD5 hash less CPU intensive than SHA family functions?
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 ...
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How to assign a Git SHA1's to a file without Git?
As I understand it when Git assigns a SHA1 hash to a file this SHA1 is unique to the file based on its contents.
As a result if a file moves from one repository to another the SHA1 for the file ...
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How does Git compute file hashes?
The SHA1 hashes stored in the tree objects (as returned by git ls-tree) do not match the SHA1 hashes of the file content (as returned by sha1sum):
$ git cat-file blob ...
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SHA1 vs md5 vs SHA256: which to use for a PHP login?
I'm making a php login, and I'm trying to decide whether to use SHA1 or Md5, or SHA256 which I read about in another stackoverflow article. Are any of them more secure than others? For SHA1/256, do I ...
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How to add SHA-1 to android application
I'm trying to create a dynamic link in Firebase, when I'm selecting the android app, it shows an error saying "Add SHA-1 to this android app", I've already added a credential, but I'm not sure how ...
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HMAC-SHA1 in bash
Is there a bash script to generate a HMAC-SHA1 hash?
I'm looking for something equivalent to the following PHP code:
hash_hmac("sha1", "value", "key");
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How can I get the MD5 fingerprint from Java's keytool, not only SHA-1?
As I want to use Google maps in my application, I need the debug certificates' MD5 fingerprint. I tried following.:
(Here I copied the debug.keystore file from C:\Documents and Settings\...
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Hashing with SHA1 Algorithm in C#
I want to hash given byte[] array with using SHA1 Algorithm with the use of SHA1Managed.
The byte[] hash will come from unit test.
Expected hash is 0d71ee4472658cd5874c5578410a9d8611fc9aef (case ...
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Is it possible to get identical SHA1 hash? [duplicate]
Given two different strings S1 and S2 (S1 != S2) is it possible that:
SHA1(S1) == SHA1(S2)
is True?
If yes - with what probability?
If not - why not?
Is there a upper bound on the length of a ...
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Get SHA1 fingerprint certificate in Android Studio for Google Maps
I want to get the SHA1 key from Android Studio on a Mac. From Eclipse it's simple, but I can't get this in Android Studio.
I have checked similar questions but didn't get any way to get that in MAC.
...
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How to SHA1 hash a string in Android?
In Objective C I've been using the following code to hash a string:
-(NSString *) sha1:(NSString*)stringToHash {
const char *cStr = [stringToHash UTF8String];
unsigned char result[20];
...
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Probability of SHA1 collisions
Given a set of 100 different strings of equal length, how can you quantify the probability that a SHA1 digest collision for the strings is unlikely... ?
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How to get (only) author name or email in git given SHA1?
I would like to check for author's e-mail and name, surname to verify who's pushing to my repo.
Is there any way that I can come up with a command in git to show commiter's name/e-mail given only ...
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How to hash NSString with SHA1 in Swift?
In objective-c it looks like this:
#include <sys/xattr.h>
@implementation NSString (reverse)
-(NSString*)sha1
{
NSData *data = [self dataUsingEncoding:NSUTF8StringEncoding];
uint8_t ...
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How can I pass git SHA1 to compiler as definition using cmake?
In a Makefile this would be done with something like:
g++ -DGIT_SHA1="`git log -1 | head -n 1`" ...
This is very useful, because the binary knows exact commit SHA1 so it can dump it in case of ...
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Java calculate hex representation of a SHA-1 digest of a String
I'm storing the user password on the db as a sha1 hash.
Unfortunately I'm getting strange answers.
I'm storing the string as this:
MessageDigest cript = MessageDigest.getInstance("SHA-1");
...
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How do I do a SHA1 File Checksum in C#?
How do I use the SHA1CryptoServiceProvider() on a file to create a SHA1 Checksum of the file?
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Objective-C sample code for HMAC-SHA1 [closed]
I need to generate HMAC-SHA1 in Objective C. But i didnt find anything that works. I tried with CommonCrypto, using CCHMAC, but didnt works. I need to generate a hmac and after generate HOTP number.
...
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What checksum algorithm should I use?
I'm building a system which needs to be able to find if blobs of bytes have been updated.
Rather than storing the whole blob (they can be up to 5MBs), I'm thinking I should compute a checksum of it, ...
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Why does git hash-object return a different hash than openssl sha1?
Context: I downloaded a file (Audirvana 0.7.1.zip) from code.google to my Macbook Pro (Mac OS X 10.6.6).
I wanted to verify the checksum, which for that particular file is posted as ...
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HMAC-SHA1: How to do it properly in Java?
I'm hashing some values using HMAC-SHA1, using the following code in Java:
public static String hmacSha1(String value, String key) {
try {
// Get an hmac_sha1 key from the raw key bytes
...
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SHA1 Key for DEBUG & RELEASE ANDROID STUDIO MAC , How to generate SHA1 Release Keys in Mac?
How do I get my SHA1 Keys for debug and release using android studio on a mac?
(These are required for Google API Keys)
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Implementation HMAC-SHA1 in python
I am trying to use the OAuth of a website, which requires the signature method to be 'HMAC-SHA1' only.
I am wondering how to implement this in Python?
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votes
4
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Git - finding the SHA1 of an individual file in the index
I've added a file to the 'index' with:
git add myfile.java
How do I find out the SHA1 of this file?
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8
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Compute SHA-1 of byte array
I'm looking for a way of getting an SHA-1 checksum with a Java byte array as the message.
Should I use a third party tool or is there something built in to the JVM that can help?
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4
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Google Maps API for Android, getting SHA1 cert instead of MD5
When I try to get the MD5 fingerprint using keytool, I get a SHA1 fingerprint instead and the Google Maps doesn't recognize it. How do I get the MD5 fingerprint?
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A Regex to match a SHA1
I'm trying to match SHA1's in generic text with a regular expression.
Ideally I want to avoid matching words.
It's safe to say that full SHA1's have a distinctive pattern (they're long and a ...
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How to generate an HMAC in Java equivalent to a Python example?
I'm looking at implementing an app getting Twitter authorization via Oauth in Java. The first step is getting a request token. Here is a Python example for app engine.
To test my code, I am running ...
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Check if my SSL Certificate is SHA1 or SHA2
I have tried to find the answer to this but I couldn't find an answer...
How do I check if my SSL Certificate is using SHA1 or SHA2?
Reason I ask is because it might have to do with the certificate ...
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What are the chances that two messages have the same MD5 digest and the same SHA1 digest?
Given two different messages, A and B (maybe 20-80 characters of text, if size matters at all), what is the probability that the MD5 digest of A is the same as the MD5 digest of B and the SHA1 digest ...
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votes
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Git - finding a filename from a SHA1
I added a file to the index with:
git add somefile.txt
I then got the SHA1 for this file with:
git hash-object somefile.txt
I now have a SHA1 and I would like to retrieve the filename of the ...
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Why is a SHA-1 Hash 40 characters long if it is only 160 bit?
The title of the question says it all. I have been researching SHA-1 and most places I see it being 40 Hex Characters long which to me is 640bit. Could it not be represented just as well with only 10 ...
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How to installing sha1sum in MAC OS?
Problem:
To get the sha1sum value of a file in MAC OS i run the following command
sha1sum file_name
The error I got is following
perl version 5.18.2 can't run /usr/bin/sha1sum. Try the ...
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Creating SHA1 Hash from NSString
How can I create a SHA1 from a NSString.
Let's say the NSString is set up as:
NSString *message = @"Message";
I can use PHP to create a SHA1 hash with sha($message). But unfortunately it doesn't ...
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Is it possible to reverse a SHA-1 hash?
Is it possible to reverse a SHA-1?
I'm thinking about using a SHA-1 to create a simple lightweight system to authenticate a small embedded system that communicates over an unencrypted connection.
Let'...
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RSA signature size?
I would like to know what is the length of RSA signature ? Is it always the same size as the RSA key size like if the key size is 1024 then RSA signature is 128 bytes , if the key size is 512 bits ...
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Why use SHA1 for hashing secrets when SHA-512 is more secure?
I don't mean for this to be a debate, but I'm trying to understand the technical rationale behind why so many apps use SHA1 for hashing secrets, when SHA512 is more secure. Perhaps it's simply for ...
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votes
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Is there an equivalent to SHA1() in MS-SQL?
Converting a couple stored procedures from MySQL to Microsoft SQL server. Everything is going well, except one procedure used the MySQL SHA1() function. I cannot seem to find an equivalent to this in ...
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Password hash function for Excel VBA
I need a function written in Excel VBA that will hash passwords using a standard algorithm such as SHA-1. Something with a simple interface like:
Public Function CreateHash(Value As String) As ...
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