Prisijungę SHA256 hash generatorius

After seeing that default passwords generated by phpMyAdmin used mysql_native_password and therefore hashes didn't changed when equal passwords where used, I updated one user's password and set the hashing to SHA256.

When I tried to login again using the setted password it says:

mysqli_real_connect(): (HY000/1045): Access denied for user 'xxxx'@'xxxx' (using password: YES).

The server uses https and phpMyAdmin forces to uses SSL as well.

Once the password is changed with SHA256, the only way to gain access again is manually setting the password and reverting password plugin to mysql_native_password.

How can I login to phpMyAdmin with users using SHA256 passwords?

Note: if I try to use the same user and the SHA256 password to login to mysql console it works fine.

I am working on a project by using Android Studio, and it requires me to find the sign certificate in the form of SHA256 hash, then somehow find the signer name in ASCII.

I have bee using the generate APK feature in Android Studio to generate the key. Then, from command to use the keytool to check SHA256 with the right password filled in. But, it seems like I keep getting the wrong answer. What I don't get is if I try to do the entire process again by creating a new key, the SHA256 code will change. There should be something I am missing.Please give me some advice. If possible, can you also tell me a little bit about the finding signer's name part? Thank you for your help! Besides, if also possible, can someone become my mentor for this project?

The command I used in cmd is: keytool -exportcert -alias -keystore -list -v

I used sha256 in js to hash a random string as bytes and received a bytes array. I want to read them in as a positive integer number. Can you help me do this with js?

const bytesArray = sha256(randomString, {asBytes: true});

I am working on a memory constraint 8/16 bit chip (8051) with only 32KB of ROM...

I am looking for a very small memory footprint version of the SHA256 calculator.

The version that I am using now is based on the classical version as found on wikipedia (https://en.wikipedia.org/wiki/SHA-2), but it compiles in around 1KB of flash (to get started, it uses 256 bytes for the 'table')...

Is there any (maybe slower) version of the algo which will be much more memory constrained?

Thanks,

Cyrille

How to hash some string with sha256 in Java ? Does anybody know any free library for this ?