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Replace custom hex implementations with `uint8arrays`

This commit is contained in:
Franck Royer 2022-03-25 14:32:07 +11:00
parent a915acfcda
commit 33e6c3fe39
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1 changed files with 7 additions and 14 deletions
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21
src/lib/utils.ts
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@ -1,16 +1,16 @@
import { keccak256, Message } from "js-sha3"; import { keccak256, Message } from "js-sha3";
import { fromString } from "uint8arrays/from-string";
import { toString } from "uint8arrays/to-string";
/** /**
* Convert input to a byte array. * Convert input to a byte array.
*
* Handles both `0x` prefixed and non-prefixed strings.
*/ */
export function hexToBytes(hex: string | Uint8Array): Uint8Array { export function hexToBytes(hex: string | Uint8Array): Uint8Array {
if (typeof hex === "string") { if (typeof hex === "string") {
const _hex = hex.replace(/^0x/i, ""); const _hex = hex.replace(/^0x/i, "");
const bytes = []; return fromString(_hex, "base16");
for (let c = 0; c < _hex.length; c += 2)
bytes.push(parseInt(_hex.substring(c, c + 2), 16));
return new Uint8Array(bytes);
} }
return hex; return hex;
} }
@ -18,15 +18,8 @@ export function hexToBytes(hex: string | Uint8Array): Uint8Array {
/** /**
* Convert byte array to hex string (no `0x` prefix). * Convert byte array to hex string (no `0x` prefix).
*/ */
export function bytesToHex(bytes: Uint8Array): string { export const bytesToHex = (bytes: Uint8Array): string =>
const hex = []; toString(bytes, "base16");
for (let i = 0; i < bytes.length; i++) {
const current = bytes[i] < 0 ? bytes[i] + 256 : bytes[i];
hex.push((current >>> 4).toString(16));
hex.push((current & 0xf).toString(16));
}
return hex.join("");
}
/** /**
* Return Keccak-256 of the input. * Return Keccak-256 of the input.