33 lines
1.2 KiB
Rust
33 lines
1.2 KiB
Rust
// Copyright 2015-2019 Parity Technologies (UK) Ltd.
|
|
// This file is part of Parity Ethereum.
|
|
|
|
// Parity Ethereum is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
|
|
// Parity Ethereum is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with Parity Ethereum. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
//! IPFS utility functions
|
|
|
|
use multihash;
|
|
use cid::{Cid, Codec, Version};
|
|
use crypto::digest;
|
|
use jsonrpc_core::Error;
|
|
use v1::types::Bytes;
|
|
use super::errors;
|
|
|
|
/// Compute CIDv0 from protobuf encoded bytes.
|
|
pub fn cid(content: Bytes) -> Result<String, Error> {
|
|
let hash = digest::sha256(&content.0);
|
|
let mh = multihash::encode(multihash::Hash::SHA2256, &*hash).map_err(errors::encoding)?;
|
|
let cid = Cid::new(Codec::DagProtobuf, Version::V0, &mh);
|
|
Ok(cid.to_string())
|
|
}
|