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Merge pull request #28 from boltlabs-inc/wtp-utils 

wtp-utils: add secp-sig reconstruct + channel close reconstruct
This commit is contained in:
J. Ayo Akinyele 2019-11-29 16:09:06 -05:00 committed by GitHub
parent f25568e1db 8a12077d07
commit 312a9dfd43
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 39 additions and 0 deletions
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src/lib.rs
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@ -514,16 +514,22 @@ pub mod wtp_utils {
pub use cl::Signature;
pub use channels::ChannelToken;
pub use wallet::Wallet;
use channels::ChannelcloseM;
const BLS12_381_CHANNEL_TOKEN_LEN: usize = 1074;
const BLS12_381_G1_LEN: usize = 48;
const BLS12_381_G2_LEN: usize = 96;
const SECP256K1_PK_LEN: usize = 33;
const ADDRESS_LEN: usize = 32;
pub fn reconstruct_secp_public_key(pk_bytes: &[u8; SECP256K1_PK_LEN]) -> secp256k1::PublicKey {
return secp256k1::PublicKey::from_slice(pk_bytes).unwrap();
}
pub fn reconstruct_secp_signature(sig_bytes: &[u8]) -> secp256k1::Signature {
return secp256k1::Signature::from_der(sig_bytes).unwrap();
}
pub fn reconstruct_close_wallet_bls12(channel_token: &ChannelToken<Bls12>, wpk: &secp256k1::PublicKey, cust_bal: u32, merch_bal: u32) -> Wallet<Bls12> {
let channelId = channel_token.compute_channel_id();
let wpk_h = util::hash_pubkey_to_fr::<Bls12>(&wpk);
@ -641,6 +647,16 @@ pub mod wtp_utils {
let wpk_thesame = (close_msg.wpk == chan_token_wpk);
return cid_thesame && wpk_thesame && channel_token.cl_pk_m.verify(&channel_token.mpk, &close_msg.as_fr_vec(), &close_token);
}
pub fn reconstruct_secp_channel_close_m(address: &[u8; 32], ser_revoke_token: &Vec<u8>, ser_sig: &Vec<u8>) -> ChannelcloseM {
let revoke_token = secp256k1::Signature::from_der(&ser_revoke_token.as_slice()).unwrap();
let sig = secp256k1::Signature::from_der(&ser_sig.as_slice()).unwrap();
ChannelcloseM {
address: hex::encode(&address.to_vec()),
revoke: Some(revoke_token),
signature: sig,
}
}
}
#[cfg(all(test, feature = "unstable"))]
@ -1086,6 +1102,29 @@ mod tests {
Ok(n) => n.unwrap(),
Err(e) => panic!("Error reconstructing compact rep of signature: {}", e)
};
}
#[test]
fn test_reconstruct_secp_sig() {
let _ser_sig = "3044022064650285b55624f1f64b2c75e76589fa4b1033dabaa7ff50ff026e1dc038279202204ca696e0a829687c87171e8e5dab17069be248ff2595fd9607f3346dadcb579f";
let ser_sig = hex::decode(_ser_sig).unwrap();
let signature = wtp_utils::reconstruct_secp_signature(ser_sig.as_slice());
assert_eq!(format!("{:?}", signature), _ser_sig);
}
#[test]
fn test_reconstruct_channel_close_m() {
let mut address = [0u8; 32];
let address_slice = hex::decode("1111111111111111111111111111111111111111111111111111111111111111").unwrap();
address.copy_from_slice(address_slice.as_slice());
let channelClose = wtp_utils::reconstruct_secp_channel_close_m(&address,
&hex::decode("3044022041932b376fe2c5e9e9ad0a3804e2290c3bc40617ea4f7b913be858dbcc3760b50220429d6eb1aabbd4135db4e0776c0b768af844b0af44f2f8f9da5a65e8541b4e9f").unwrap(),
&hex::decode("3045022100e76653c5f8cb4c2f39efc7c5450d4f68ef3d84d482305534f5dfc310095a3124022003c4651ce1305cffe5e483ab99925cc4c9c5df2b5449bb18a51d52b21d789716").unwrap());
assert_eq!(channelClose.address, "1111111111111111111111111111111111111111111111111111111111111111");
assert_eq!(format!("{:?}", channelClose.revoke.unwrap()), "3044022041932b376fe2c5e9e9ad0a3804e2290c3bc40617ea4f7b913be858dbcc3760b50220429d6eb1aabbd4135db4e0776c0b768af844b0af44f2f8f9da5a65e8541b4e9f");
assert_eq!(format!("{:?}", channelClose.signature), "3045022100e76653c5f8cb4c2f39efc7c5450d4f68ef3d84d482305534f5dfc310095a3124022003c4651ce1305cffe5e483ab99925cc4c9c5df2b5449bb18a51d52b21d789716");
}
}