Jaco Greeff
73708b72c7
* Allow double-byte ss58 * Update keyring tests (non-68) * Range check * Fixup tests and encoding * Adjust keyring test * Adjust * Assert format * Additionl subkey equivalency tests * ecdsa tests * Remove invalid test * UpdateAssert of reserved * Cleanups * cleanups * Last test for Substrate equality * crosscheck update * network null * network
33 lines
1.2 KiB
TypeScript
33 lines
1.2 KiB
TypeScript
// Copyright 2017-2021 @polkadot/util-crypto authors & contributors
|
|
// SPDX-License-Identifier: Apache-2.0
|
|
|
|
import type { Prefix } from './types';
|
|
|
|
// Original implementation: https://github.com/paritytech/polka-ui/blob/4858c094684769080f5811f32b081dd7780b0880/src/polkadot.js#L6
|
|
import { assert, isHex, isU8a, u8aToU8a } from '@polkadot/util';
|
|
|
|
import { base58Decode } from '../base58/decode';
|
|
import { checkAddressChecksum } from './checksum';
|
|
import { defaults } from './defaults';
|
|
|
|
export function decodeAddress (encoded: string | Uint8Array, ignoreChecksum?: boolean, ss58Format: Prefix = -1): Uint8Array {
|
|
if (isU8a(encoded) || isHex(encoded)) {
|
|
return u8aToU8a(encoded);
|
|
}
|
|
|
|
try {
|
|
const decoded = base58Decode(encoded);
|
|
|
|
assert(defaults.allowedEncodedLengths.includes(decoded.length), 'Invalid decoded address length');
|
|
|
|
const [isValid, endPos, ss58Length, ss58Decoded] = checkAddressChecksum(decoded);
|
|
|
|
assert(ignoreChecksum || isValid, 'Invalid decoded address checksum');
|
|
assert([-1, ss58Decoded].includes(ss58Format), `Expected ss58Format ${ss58Format}, received ${ss58Decoded}`);
|
|
|
|
return decoded.slice(ss58Length, endPos);
|
|
} catch (error) {
|
|
throw new Error(`Decoding ${encoded as string}: ${(error as Error).message}`);
|
|
}
|
|
}
|