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Auth & security at scale

OAuth2, JWT, IAM patterns, secrets rotation, and least-privilege service auth.

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How to Sign and Verify with Ed25519 in Python

A minimal Ed25519 sign-and-verify helper that generates a key pair, signs a message, and checks the signature with the cryptography library.

ed25519 cryptography signing
Python 
import hashlib
from cryptography.hazmat.primitives.asymmetric import ed25519
from cryptography.hazmat.primitives import serialization

def sign_verify_mock(
    message: bytes,
    private_key: ed25519.Ed25519PrivateKey,
    public_key: ed25519.Ed25519PublicKey
) -> tuple[bool, bytes]:
    signature = private_key.sign…
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