disarray-ledger 0.1.20

This crate services our hybrid multi-chain directly implementing several critical structures from blocks to chains and transactions
Documentation 
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/*
   Appellation: transactions <module>
   Contributors: FL03 <jo3mccain@icloud.com>
   Description: ... Summary ...
*/
pub use self::{interface::*, sig::*, spam::*, transaction::*, utils::*};

pub(crate) mod interface;
pub(crate) mod sig;
pub(crate) mod spam;
pub(crate) mod transaction;

pub(crate) mod utils {
    use super::{Sign, SignedTransaction, Transaction};
    use scsys::prelude::{
        generate_random_hash,
        rand::{self, Rng},
        random_keypair,
        ring::signature::{
            self, Ed25519KeyPair, EdDSAParameters, KeyPair, Signature, UnparsedPublicKey,
            VerificationAlgorithm, ED25519,
        },
    };

    pub fn validate_transaction_signature(
        trx: &Transaction,
        key: &Ed25519KeyPair,
        sig: &signature::Signature,
    ) -> bool {
        let ppk = UnparsedPublicKey::new(&ED25519, key.public_key().as_ref());
        ppk.verify(trx.to_string().as_bytes(), sig.as_ref()).is_ok()
    }

    /// Verify digital signature of a transaction, using public key instead of secret key
    pub fn verify(
        t: &Transaction,
        public_key: &<Ed25519KeyPair as KeyPair>::PublicKey,
        signature: &Signature,
    ) -> bool {
        let serialized: Vec<u8> = serde_json::to_vec(t).unwrap();
        let bytes: &[u8] = &serialized;
        match VerificationAlgorithm::verify(
            &EdDSAParameters,
            public_key.as_ref().into(),
            bytes.into(),
            signature.as_ref().into(),
        ) {
            Ok(_) => true,
            Err(_e) => false,
        }
    }

    pub fn verify_signedtxn(t: &SignedTransaction) -> bool {
        let transaction = t.transaction.clone();
        let pubk = t.sign.pubk.clone();
        let sig = t.sign.sig.clone();
        let serialized: Vec<u8> = serde_json::to_vec(&transaction).unwrap();
        let bytes: &[u8] = &serialized;
        match VerificationAlgorithm::verify(
            &EdDSAParameters,
            pubk[..].into(),
            bytes.into(),
            sig[..].into(),
        ) {
            Ok(_) => true,
            Err(_e) => false,
        }
    }

    pub fn generate_random_transaction() -> Transaction {
        let mut rng = rand::thread_rng();
        Transaction::new(rng.gen(), generate_random_hash().into(), rng.gen())
    }

    pub fn generate_random_signed_transaction() -> SignedTransaction {
        let transaction = generate_random_transaction();
        let pubk = random_keypair();
        let sig = super::sign(&transaction, &pubk);
        let sign = Sign {
            pubk: pubk.public_key().as_ref().to_vec(),
            sig: sig.as_ref().to_vec(),
        };
        SignedTransaction::new(sign, transaction)
    }
}