pub fn execution_address_seeds<'a>(requester: &'a Pubkey, execution_id: &'a [u8]) -> Vec<&'a [u8]> {

    vec!["execution".as_bytes(), requester.as_ref(), execution_id]

}

pub fn deployment_address_seeds(hash: &Hash) -> Vec<&[u8]> {

    vec!["deployment".as_bytes(), hash.as_ref()]

}

pub fn execution_claim_address_seeds(execution_address: &[u8]) -> Vec<&[u8]> {

    vec!["execution_claim".as_bytes(), execution_address]

}

pub fn execution_address(requester: &Pubkey, execution_id: &[u8]) -> (Pubkey, u8) {

    Pubkey::find_program_address(&execution_address_seeds(requester, execution_id), &ID)

}

pub fn input_set_address(input_set_hash: &[u8]) -> (Pubkey, u8) {

    Pubkey::find_program_address(&input_set_address_seeds(input_set_hash), &ID)

}

pub fn input_set_address_seeds(id: &[u8]) -> Vec<&[u8]> {

    vec!["input_set".as_bytes(), id]

}

pub fn img_id_hash(image_id: &str) -> Hash {

    keccak::hash(image_id.as_bytes())

}

pub fn deployment_address(image_id: &str) -> (Pubkey, u8) {

    let hsh = img_id_hash(image_id);

    Pubkey::find_program_address(&deployment_address_seeds(&hsh), &ID)

}

pub fn execution_claim_address(execution_id: &[u8]) -> (Pubkey, u8) {

    Pubkey::find_program_address(&execution_claim_address_seeds(execution_id), &ID)

}