sol_did/
utils.rs

1use crate::constants::DID_SOL_PREFIX;
2use crate::{id, DID_ACCOUNT_SEED};
3use anchor_lang::prelude::{Error, ErrorCode};
4use solana_program::keccak;
5use solana_program::pubkey::Pubkey;
6use solana_program::secp256k1_recover::{
7    secp256k1_recover, Secp256k1Pubkey, Secp256k1RecoverError,
8};
9
10pub fn convert_secp256k1pub_key_to_address(pubkey: &Secp256k1Pubkey) -> [u8; 20] {
11    let mut address = [0u8; 20];
12    address.copy_from_slice(&keccak::hash(pubkey.to_bytes().as_ref()).to_bytes()[12..]);
13    address
14}
15
16pub fn is_did_sol_prefix(did: &str) -> bool {
17    did.starts_with(DID_SOL_PREFIX)
18}
19
20pub fn check_other_controllers(controllers: &[String]) -> bool {
21    controllers.iter().all(|did| !is_did_sol_prefix(did))
22}
23
24/// Returns the address that signed message producing signature.
25pub fn eth_verify_message(
26    message: &[u8],
27    nonce: u64,
28    signature: [u8; 64],
29    recovery_id: u8,
30) -> Result<Secp256k1Pubkey, Secp256k1RecoverError> {
31    let message_with_nonce = [message, nonce.to_le_bytes().as_ref()].concat();
32    // Ethereum conforming Message Input
33    // https://docs.ethers.io/v4/api-utils.html?highlight=hashmessage#hash-function-helpers
34    let sign_message_input = [
35        "\x19Ethereum Signed Message:\n".as_bytes(),
36        message_with_nonce.len().to_string().as_bytes(),
37        message_with_nonce.as_ref(),
38    ]
39    .concat();
40
41    let hash = keccak::hash(sign_message_input.as_ref());
42    // msg!("Hash: {:x?}", hash.as_ref());
43    // msg!("Message: {:x?}", message);
44    // msg!(
45    //     "sign_message_input: {:x?}, Length: {}",
46    //     sign_message_input,
47    //     sign_message_input.len()
48    // );
49    // msg!("Signature: {:x?}", raw_signature.signature);
50    // msg!("RecoveryId: {:x}", raw_signature.recovery_id);
51
52    let secp256k1_pubkey = secp256k1_recover(hash.as_ref(), recovery_id, signature.as_ref());
53    // msg!("Recovered: {:?}", secp256k1_pubkey.to_bytes());
54    //
55    // // Check EcdsaSecp256k1VerificationKey2019 matches
56    // msg!(
57    //     "Checking if {:x?} is an EcdsaSecp256k1VerificationKey2019 authority",
58    //     secp256k1_pubkey.to_bytes()
59    // );
60    secp256k1_pubkey
61}
62
63pub fn derive_did_account(key: &[u8]) -> (Pubkey, u8) {
64    Pubkey::find_program_address(&[DID_ACCOUNT_SEED.as_bytes(), key], &id())
65}
66
67pub fn derive_did_account_with_bump(key: &[u8], bump_seed: u8) -> Result<Pubkey, Error> {
68    Pubkey::create_program_address(&[DID_ACCOUNT_SEED.as_bytes(), key, &[bump_seed]], &id())
69        .map_err(|_| Error::from(ErrorCode::ConstraintSeeds))
70}
sol_did/utils.rs

sol_did/
utils.rs
