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solana

why could it get the associated account for a new generated address?

It is weird that it can get the associated account since it is new generated address.

const account = Keypair.generate();

let address = await Token.getAssociatedTokenAddress(
  ASSOCIATED_TOKEN_PROGRAM_ID,
  TOKEN_PROGRAM_ID,
  token.publicKey,
  account
);
Solution

  • The address generated from getAssociatedTokenAddress is deterministic, so given the same public key inputs, it will always have the same output. Additionally, it is a program-derived address, so it can only be "signed for" by the program.

    You can find more information about program-derived addresses at https://docs.solana.com/developing/programming-model/calling-between-programs#program-derived-addresses