85 lines
2.3 KiB
Rust
85 lines
2.3 KiB
Rust
use std::fs;
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use std::path::Path;
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use rcrypto::pbkdf2::pbkdf2;
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use rcrypto::sha2::Sha256;
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use rcrypto::hmac::Hmac;
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use json;
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use ethkey::{Address, Secret, KeyPair};
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use crypto::Keccak256;
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use {crypto, Error};
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/// Pre-sale wallet.
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pub struct PresaleWallet {
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iv: [u8; 16],
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ciphertext: Vec<u8>,
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address: Address,
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}
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impl From<json::PresaleWallet> for PresaleWallet {
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fn from(wallet: json::PresaleWallet) -> Self {
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let mut iv = [0u8; 16];
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iv.copy_from_slice(&wallet.encseed[..16]);
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let mut ciphertext = vec![];
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ciphertext.extend_from_slice(&wallet.encseed[16..]);
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PresaleWallet {
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iv: iv,
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ciphertext: ciphertext,
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address: Address::from(wallet.address),
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}
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}
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}
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impl PresaleWallet {
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/// Open a pre-sale wallet.
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pub fn open<P>(path: P) -> Result<Self, Error> where P: AsRef<Path> {
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let file = fs::File::open(path)?;
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let presale = json::PresaleWallet::load(file)
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.map_err(|e| Error::InvalidKeyFile(format!("{}", e)))?;
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Ok(PresaleWallet::from(presale))
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}
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/// Decrypt the wallet.
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pub fn decrypt(&self, password: &str) -> Result<KeyPair, Error> {
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let mut h_mac = Hmac::new(Sha256::new(), password.as_bytes());
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let mut derived_key = vec![0u8; 16];
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pbkdf2(&mut h_mac, password.as_bytes(), 2000, &mut derived_key);
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let mut key = vec![0; self.ciphertext.len()];
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let len = crypto::aes::decrypt_cbc(&derived_key, &self.iv, &self.ciphertext, &mut key).map_err(|_| Error::InvalidPassword)?;
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let unpadded = &key[..len];
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let secret = Secret::from_unsafe_slice(&unpadded.keccak256())?;
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if let Ok(kp) = KeyPair::from_secret(secret) {
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if kp.address() == self.address {
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return Ok(kp)
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}
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}
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Err(Error::InvalidPassword)
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}
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}
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#[cfg(test)]
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mod tests {
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use super::PresaleWallet;
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use json;
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#[test]
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fn test() {
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let json = r#"
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{
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"encseed": "137103c28caeebbcea5d7f95edb97a289ded151b72159137cb7b2671f394f54cff8c121589dcb373e267225547b3c71cbdb54f6e48ec85cd549f96cf0dedb3bc0a9ac6c79b9c426c5878ca2c9d06ff42a23cb648312fc32ba83649de0928e066",
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"ethaddr": "ede84640d1a1d3e06902048e67aa7db8d52c2ce1",
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"email": "123@gmail.com",
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"btcaddr": "1JvqEc6WLhg6GnyrLBe2ztPAU28KRfuseH"
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} "#;
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let wallet = json::PresaleWallet::load(json.as_bytes()).unwrap();
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let wallet = PresaleWallet::from(wallet);
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assert!(wallet.decrypt("123").is_ok());
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assert!(wallet.decrypt("124").is_err());
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}
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}
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