Module utils

Utilities for the program

Functions

assert_derivation

Verify the derivation of the seeds against the given account.

assert_owned_by

Assert that the given account is owned by the given pubkey.

cmp_pubkeys

Convenience function for comparing two Pubkeys.

compute_merkle_root

Compute the root of a Merkle tree given a leaf and a proof. Uses a constant value of 0x01 as an input to the hashing function along with the values to be hashed.

create_or_allocate_account_raw

Create account almost from scratch, lifted from https://github.com/solana-labs/solana-program-library/tree/master/associated-token-account/program/src/processor.rs#L51-L98

get_existing_revision_map

Get a revision map by looking at the header, finding its location, and deserializing it.

get_latest_revision

Get the latest revision number stored on the revision map.

is_on_curve

Return whether the pubkey is on the Edwards 25519 curve.

is_zeroed

See if a slice contains all zeroes. Useful for checking an account’s data.

resize_or_reallocate_account_raw

Resize an account using realloc, lifted from Solana Cookbook.