message signing in Solana

https://solana.com/developers/cookbook/wallets/sign-message https://solana.com/developers/cookbook/wallets/sign-message

d > private key m > message s > signature

[deterministic signature] Input (d, m) always produce same s [non-deterministic signature] Input (d, m) produce different s at each time

BTC & SOL uses deterministic signature ETH uses both depending on wallet/library

Interesting reads: - Deterministic signatures are not your friends (archived)

Message Signing in Solana:

Message signing in Solana is a cryptographic process that verifies the authenticity and integrity of transactions. Here's a concise overview:

• Purpose: Ensure that transactions are genuine, tamper-proof, and come from the expected sender.
• Key Components:
  • Private Key: Used to sign the transaction.
  • Public Key: Used to verify the signature.
  • Message: The transaction data being signed.
• Process:
  1. The sender generates a transaction message.
  2. The sender signs the message with their private key using the Ed25519 algorithm.
  3. The resulting signature is appended to the transaction.
  4. The transaction is broadcast to the Solana network.
  5. Validators verify the signature using the sender's public key.
• Benefits:
  • Authentication: Ensures the transaction comes from the expected sender.
  • Integrity: Ensures the transaction data has not been tampered with.
  • Non-repudiation: Prevents the sender from denying involvement in the transaction.
• Implementation: Solana's @solana/web3.js library provides functions for generating and verifying signatures, such as signTransaction() and verifySignature().

Domain (AI Generated)

Cryptography, specifically Digital Signatures.

World-class best people (AI Generated)

Some notable experts on message signing in Solana include:

1. Austin Virts (Solana Labs): Contributed to Solana's cryptography and message signing implementations.
2. Anatoly Yakovenko (Solana Co-Founder): Led the development of Solana's core technology, including message signing.
3. Greg Fitzgerald (Solana Labs): Worked on Solana's cryptography and security features, including message signing.

These individuals have made significant contributions to Solana's message signing capabilities.