mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-06-18 09:31:02 +00:00
James Wilson
b4eb406ee5
* Add and use subxt-signer crate for WASM compatible signing * cargo fmt * dev keypairs already references * WIP fix various breakages * re-jig features to be simpler and various test fixes etc * doc and web fix * fix various bits and pieces * fix a test I broke * dev-deps can't be linked to in docs, hrmph * cargo fmt * another doc link * document the subxt_signer crate more thoroughly * move feature flag for consistency * more docs, no default subxt feature flag on signer, update release instrs * Add missing license header * unwrap_inner => into_inner * extend a test a little to better check derive junctions * note more clearly that the crypto bits come from sp_core::crypto
30 lines
878 B
Rust
30 lines
878 B
Rust
// Copyright 2019-2023 Parity Technologies (UK) Ltd.
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// This file is dual-licensed as Apache-2.0 or GPL-3.0.
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// see LICENSE for license details.
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use hmac::Hmac;
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use pbkdf2::pbkdf2;
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use sha2::Sha512;
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use zeroize::Zeroize;
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/// This is taken from `substrate-bip39` so that we can keep dependencies in line, and
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/// is the same logic that sp-core uses to go from mnemonic entropy to seed. Returns
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/// `None` if invalid length.
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pub fn seed_from_entropy(entropy: &[u8], password: &str) -> Option<[u8; 64]> {
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if entropy.len() < 16 || entropy.len() > 32 || entropy.len() % 4 != 0 {
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return None;
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}
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let mut salt = String::with_capacity(8 + password.len());
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salt.push_str("mnemonic");
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salt.push_str(password);
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let mut seed = [0u8; 64];
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pbkdf2::<Hmac<Sha512>>(entropy, salt.as_bytes(), 2048, &mut seed).ok()?;
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salt.zeroize();
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Some(seed)
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}
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