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Module 0x7::test_derivable_account_abstraction_ed25519_hex

Domain account abstraction using ed25519 hex for signing.

Authentication takes digest, converts to hex (prefixed with 0x, with lowercase letters), and then expects that to be signed. authenticator is expected to be signature: vector account_identity is raw public_key.

use 0x1::auth_data;
use 0x1::ed25519;
use 0x1::error;
use 0x1::string;
use 0x1::string_utils;

Constants 

const EINVALID_SIGNATURE: u64 = 1;

Function authenticate

Authorization function for domain account abstraction.

public fun authenticate(account: signer, aa_auth_data: auth_data::AbstractionAuthData): signer
Implementation 
public fun authenticate(
    account: signer, aa_auth_data: AbstractionAuthData
): signer {
    let hex_digest = string_utils::to_string(aa_auth_data.digest());

    let public_key =
        new_unvalidated_public_key_from_bytes(
            *aa_auth_data.derivable_abstract_public_key()
        );
    let signature =
        new_signature_from_bytes(*aa_auth_data.derivable_abstract_signature());
    assert!(
        ed25519::signature_verify_strict(
            &signature, &public_key, *hex_digest.bytes()
        ),
        error::permission_denied(EINVALID_SIGNATURE)
    );

    account
}