Online SHA1 Hash Generator

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 exactly do I "add SHA-1 to the app"

How is this done?

I'm testing the speed of 3 hash functions in Java (Blake2b-256, SHA1, and SHA-256) and I'm getting some results that I'm curious about.

AFAIK, Java does not have a built in Blake2b implementation, so I'm using BouncyCastle, and when testing the BouncyCastle SHA-256 and SHA1 implementations against the Java ones, the results are 4-6 times slower (approximately).Is there any obvious explanation for this/ways to improve the BouncyCastle implementation's speed?

All of the functions were called the same way; I'm initializing all the MessageDigest instances before hashing, and simply running reset() and digest(byte[] in) for each input.

Here are the results I got:

Blake2b-256 took 606287 ns.SHA1-B took 55237 ns.SHA1-C took 10913 ns.trueSHA2-B took 65884 ns.SHA2-C took 15451 ns.true

B denoting BouncyCastle, C being the Java implementation.

EDIT: Note, I am not asking about how to implement a micro-benchmark (mostly because I used that question as a reference before posting this question).

EDIT 2: I'm guessing I simply wasn't using enough repetitions in my benchmark because after increasing it by 50000 I'm getting much better results, but the results are still not what I'd expect - Blake2b should be beating both SHA1 and SHA-256 but instead it's (still) lagging significantly behind, and the BouncyCastle implementations are still lagging behind the Java ones, although not quite as dramatically.

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 SHA1 of the commit?

This is what I came up with but it's far from ideal solution (the first solution is for git hook that's why it's using 2 SHA1s with rev-list. The second one simply uses git show):

git rev-list -n 1 --pretty=short  ccd3970..6ddf170 | grep Author | cut -d ' ' -f2- | rev | cut -d ' ' -f2- | revgit show 6ddf170 | grep Author | cut -d ' ' -f2- | rev | cut -d ' ' -f2- | rev 

What I'm trying to do is use SHA1 UTF-8 encryption and then base64 encoding and on a password string value. However, I needed to do the encryption first, then the encoding, but I did it the other way around.

Here is the code:

# Create Input Data $enc = [system.Text.Encoding]::UTF8$string1 = "This is a string to hash" $data1 = $enc.GetBytes($string1) # Create a New SHA1 Crypto Provider $sha = New-Object System.Security.Cryptography.SHA1CryptoServiceProvider $# Now hash and display results $result1 = $sha.ComputeHash($data1) 

So, when I went to do the hashing I realized I had to have a byte[] from the string and I'm not sure how to do that. I'm thinking there is a simple way from the .Net libraries, but couldn't find an example.

So if I have a string, like:

$string = "password"

How do I convert that into a byte array that I can use on :: ComputeHash($string)?

So what I have to end up with is an encrypted SHA-1 and base 64 encoded UTF-8 password, which the code above does, but it's coming back different than when I coded this same thing in java, where I encrypted it first, then converted that result to base 64 encoding.

I'm making the assumption that while encrypting a string directly isn't supported in the api, there may be a work-around that will allow you to do this. That is what I'm attempting to do.

So I'm assuming my issue with the code is that I had to encrypt it first and then encode it to get the correct value. Correct or am I missing something here?

Here is the pertinent java code that does work:

//First method call uses a swing component to get the user entered password.String password = getPassword(); //This line is where the work starts with the second and third methods below.String hashed = byteToBase64(getHash(password));//The second method call here gets the encryption.public static byte[] getHash(String password) {      MessageDigest digest = null;      byte[] input = null;      try {             digest = MessageDigest.getInstance("SHA-1");      } catch (NoSuchAlgorithmException e1) {             e1.printStackTrace();      }      digest.reset();      try {             input = digest.digest(password.getBytes("UTF-8"));      } catch (UnsupportedEncodingException e) {             e.printStackTrace();      }      return input;}//Then the third method call here gets the encoding, FROM THE ENCRYPTED STRING.public static String byteToBase64(byte[] data){    return new String(Base64.encodeBase64(data));

When I run the java code with the password string of "password" I get

[91, -86, 97, -28, -55, -71, 63, 63, 6, -126, 37, 11, 108, -8, 51, 27, 126, -26, -113, -40]which is the encryption.

Then I when the encoding in java I get this:W6ph5Mm5Pz8GgiULbPgzG37mj9g=

but when I run it in PowerShell I get this because it's encoded first for UTF8:

91 170 97 228 201 185 63 63 6 130 37 11 108 248 51 27 126 230 143 216

Then when I run this line of code to convert it I get an error:

$base64 = [System.Convert]::FromBase64String($result)

Exception calling "FromBase64String" with "1" argument(s): "Invalid length for a Base-64 char array."At line:1 char:45

However, if I run the new line of code to make it hex from below I get:

$hexResult = [String]::Join("", ($result | % { "{0:X2}" -f $_}))PS C:\Program Files (x86)\PowerGUI> Write-Host $hexResult

5BAA61E4C9B93F3F0682250B6CF8331B7EE68FD8

but I need to end up with this value:

W6ph5Mm5Pz8GgiULbPgzG37mj9g=

Again, this may not even be possible to do, but I'm trying to find a work-around to see.

I have the following PHP function

public function encodePassword($raw, $salt)    {        return hash_hmac('sha1', $raw . $salt, $this->secret);    }

which I need to translate to Go. I found the following example, but it doesn't involve secret key.https://gobyexample.com/sha1-hashes

How can I create a function in Go, that produces exactly same result as PHP's hash_hmac?

Update: After Leo's answer, found this resource with hmac examples in many languages: https://github.com/danharper/hmac-examples. Can be useful to somebody.