blake2b | A cryptographic hash function faster than MD5 SHA-1 | Cryptography library

I'm trying to generate a Nano private key, public key and address (that's a cryptocurrency) in PHP. I successfully generated private keys but I'm not able to generate the public key and consequently neither the checksum nor the integer address. in order to do this I would have to encrypt the private key through the blake2b-512 algorithm and the ED25119 curve and then I gotta obtain the checksum through the blake2b-40 algorithm by encrypting the public key. That's my code:

I am getting a "Stack canary watchpoint triggered" when calling a decrypt routine from an AsyncUDP onPacket Callback. A test decrypt of the same data not called from the callback works correctly. Any help on how to resolve this would be much appreciated.

Trimmed code

I'm trying to hash a password for a login system I am creating. I am using the hashlib import and using the blake2b hash algorithm. I can't seem to figure out how to hash a variable such as passwordEntry. All the hashlib examples are just of blake2b hashing characters. For example: blake2b(b'IWantToHashThis') I am quite confused on why the "b" letter has to be included in the hash. If I try to hash a variable the "b" letter can't be concluded with the variable I want to hash. Example of me trying to hash a variable: blake2b(passwordEntry) Another example of me trying to hash the variable: blake2b(b passwordEntry) On the second example I just gave hashlib thinks that it is trying to hash the variable "b passwordEntry." Like I said before the "b" letter has to be included in the hashing algorithm for it to preform correctly. Sorry for the long question if it is hard to follow I understand.

I was recently hired as a junior dev as my first job for a bigger company which uses NetSuite. An old dev wrote a python script which handles pictures made by designers, that uploads pictures to NetSuite when they are uploaded to a specific folder.

Since the Script uses SHA1 I need to change the TBA to SHA256 because NetSuite does not support SHA1 anymore.

I have a hard time understanding the old dev's code, and find documentation on how to change the TBA from SHA1 to SHA256..

These are snippets from the code.

I have a C library I need to use in my Swift code and a function thet expects an UnsafeMutablePointer that is 32 bytes long to generate a public key from an existing private key (crypto_sign_public_key). Here is a link to the docs of the C function I am calling: https://monocypher.org/manual/sign. I don't have much experience with C and pointers but I've read a few tutorials and have something that seems to be working perfectly.

Aside from that though, I wanted to see if anyone with more experience than me might be able to say if this code is "safe" and/or will potentially produce undefined behaviour?

Is there a convenient function to get a hypercore's discovery key from its public key?

I know I can use myCore.key and myCore.discoveryKey in hypersdk

But if you just had a key as a hex string (e.g. "778f8d955175c92e4ced5e4f5563f69bfec0c86cc6f670352c457943666fe639"), how would you get the discovery key?

Is there a convenience function in one of the hypercore-protocol modules?

Note, the discovery key is the blake2b-256 hash of the public key.

I'm trying to install the web3 tester with pip install -U web3[tester] but always getting this error.

Pip and setuptools are both on their current version.

The complete error:

I installed Miniforge3-MacOSX-arm64, and tried to pip install --upgrade pip. But it shows same error message.

The install package command is pip install jupyter.

The challenge i'm facing is to find the leaf node in the tree ( not a binary tree ) which must be changed; i must calculate blake2b hash from the leaf data, pass that to the parent and then calculate the blake2b hash of that and so on until i reach the root node then i calculate the same for the root node.

Starting interfaces and end interface are below: