from cryptography.fernet import Fernet def encrypt_message(public_key, message): # Get the public key in bytes public_key_bytes = bytes.fromhex(public_key) # Generate a symmetric key symmetric_key = Fernet.generate_key() # Encrypt the message using the symmetric key f = Fernet(symmetric_key) encrypted_message = f.encrypt(message.encode()) # Encrypt the symmetric key using the public key rsa_key = RSA.import_key(public_key_bytes) cipher_rsa = PKCS1_OAEP.new(rsa_key) encrypted_key = cipher_rsa.encrypt(symmetric_key) return encrypted_key, encrypted_message

import ecdsa # Generate a private key private_key = ecdsa.SigningKey.generate(curve=ecdsa.SECP256k1) # Get the public key public_key = private_key.get_verifying_key() # Encode the keys to hexadecimal format private_key_hex = private_key.to_string().hex() public_key_hex = public_key.to_string().hex() print(f'Private key: {private_key_hex}') print(f'Public key: {public_key_hex}') from cryptography.fernet import Fernet def encrypt_message(public_key, message): # Get the public key in bytes public_key_bytes = bytes.fromhex(public_key) # Generate a symmetric key symmetric_key = Fernet.generate_key() # Encrypt the message using the symmetric key f = Fernet(symmetric_key) encrypted_message = f.encrypt(message.encode()) # Encrypt the symmetric key using the public key rsa_key = RSA.import_key(public_key_bytes) cipher_rsa = PKCS1_OAEP.new(rsa_key) encrypted_key = cipher_rsa.encrypt(symmetric_key) return encrypted_key, encrypted_message from cryptography.fernet import Fernet def encrypt_message(public_key, message): # Get the public key in bytes public_key_bytes = bytes.fromhex(public_key) # Generate a symmetric key symmetric_key = Fernet.generate_key() # Encrypt the message using the symmetric key f = Fernet(symmetric_key) encrypted_message = f.encrypt(message.encode()) # Encrypt the symmetric key using the public key rsa_key = RSA.import_key(public_key_bytes) cipher_rsa = PKCS1_OAEP.new(rsa_key) encrypted_key = cipher_rsa.encrypt(symmetric_key) return encrypted_key, encrypted_message
PublicNotice.Crypto "Say What You Want to Say

I asked Ai the following question, How my blockchain , ” PublicNotice.Crypto could run nodes on a LevelDB Blockchain and here is AI’s answer:

by publicnotice.crypto@gmail.comJanuary 5, 2023March 29, 2023
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Public Notice

You gave me s suggestion as to the data base I would like to use, You suggested LevelDB was a good choice for a blockchain: The question I have for you is,if I were to use levelDB as a indexing system as my data base my blockchain runs on, how could I have nodes for people who wanted to act as a node provider for my project “PublicNotice.Crypto, can you explain how I could do this for the Layman!

Sure! If you want to use LevelDB as the indexing system for your blockchain, you can have nodes that provide access to your blockchain by running a full node. A full node is a computer that stores a copy of the entire blockchain and participates in the consensus process by validating and relaying transactions.

To set up a full node, you will need to install the LevelDB software on your computer and configure it to sync with the rest of the network. This process involves downloading a copy of the blockchain data and verifying its integrity using cryptographic hashes.

Once you have a full node running, you can allow other users to access your node by opening a port on your firewall and providing them with your node’s IP address. This will allow them to connect to your node and use it to access the blockchain.

You can also consider setting up a load balancer or a network of nodes to distribute the load and improve the availability of your node. This can be useful if you expect a large number of users to be accessing your node at the same time.

I hope this helps! Let me know if you have any other questions.

SHA256 Hash: 5cf19ae9f70639bf5c377ef9351de9d786d0cd6fbe266ccbb93daa907eb98c85

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