Struct Provider

pub struct Provider {
    pub keypair: RsaKeyPair,
    pub sr: SystemRandom,
}

Struct for for crypto methods.

Fields

keypair: RsaKeyPair

sr: SystemRandom

Implementations

impl Provider

pub async fn from_keypair_path(keypair_path: PathBuf) -> Result<Provider, Error>

Reads a JsonWebKey from a PathBuf and stores it as a signature::RsaKeyPair in the keypair property of Provider for future use in signing and funding transactions.

pub fn from_keypair_path_sync(keypair_path: PathBuf) -> Result<Provider, Error>

Sync version of Provider::from_keypair_path.

pub fn keypair_modulus(&self) -> Result<Base64, Error>

Returns the full modulus of the stored keypair. Encoded as a Base64Url String, represents the associated network address. Also used in the calculation of transaction signatures.

pub fn wallet_address(&self) -> Result<Base64, Error>

Calculates the wallet address of the provided keypair according to addressing in documentation.

 let arweave = Arweave::from_keypair_path(
     PathBuf::from("tests/fixtures/arweave-key-7eV1qae4qVNqsNChg3Scdi-DpOLJPCogct4ixoq1WNg.json"),
     Url::from_str("http://url.com").unwrap()
 ).await?;
 let calc = arweave.crypto.wallet_address()?;
 let actual = String::from("7eV1qae4qVNqsNChg3Scdi-DpOLJPCogct4ixoq1WNg");
 assert_eq!(&calc.to_string(), &actual);

pub fn sign(&self, message: &[u8]) -> Result<Vec<u8>, Error>

pub fn verify(&self, signature: &[u8], message: &[u8]) -> Result<(), Error>

Verifies that a message was signed by the public key of the Provider.key keypair.

 let crypto = Provider::from_keypair_path(PathBuf::from("tests/fixtures/arweave-key-7eV1qae4qVNqsNChg3Scdi-DpOLJPCogct4ixoq1WNg.json")).await?;
 let message = String::from("hello, world");
 let rng = rand::SystemRandom::new();
 let signature = crypto.sign(&message.as_bytes())?;

 assert_eq!((), crypto.verify(&signature.as_ref(), &message.as_bytes())?);

pub fn hash_sha256(&self, message: &[u8]) -> Result<[u8; 32], Error>

pub fn hash_all_sha256(&self, messages: Vec<&[u8]>) -> Result<[u8; 32], Error>

Returns a SHA256 hash of the the concatenated SHA256 hashes of a vector of messages.

pub fn deep_hash(&self, deep_hash_item: DeepHashItem) -> Result<[u8; 48], Error>

Calculates data root of transaction in accordance with implementation in arweave-js. DeepHashItem is a recursive Enum that allows the function to be applied to nested Vec<u8> of arbitrary depth.

pub fn fill_rand(&self, dest: &mut [u8]) -> Result<(), Error>

Trait Implementations

impl Default for Provider

fn default() -> Self

Returns the “default value” for a type.