38 lines
882 B
TypeScript
38 lines
882 B
TypeScript
/**
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* Browser compatible fromHex method
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* From https://github.com/herumi/bls-eth-wasm/blob/04eedb77aa96e66b4f65a0ab477228adf8090c36/src/bls.js#L62
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*/
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export function hexToBytes(hex: string): Uint8Array {
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if (hex.startsWith("0x")) {
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hex = hex.slice(2);
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}
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if (hex.length & 1) {
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throw Error("hexToBytes:length must be even " + hex.length);
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}
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const n = hex.length / 2;
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const a = new Uint8Array(n);
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for (let i = 0; i < n; i++) {
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a[i] = parseInt(hex.slice(i * 2, i * 2 + 2), 16);
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}
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return a;
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}
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/**
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* Browser compatible toHex method
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* From https://github.com/herumi/bls-eth-wasm/blob/04eedb77aa96e66b4f65a0ab477228adf8090c36/src/bls.js#L50
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*/
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export function bytesToHex(bytes: Uint8Array): string {
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let s = "";
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const n = bytes.length;
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for (let i = 0; i < n; i++) {
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s += ("0" + bytes[i].toString(16)).slice(-2);
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}
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return "0x" + s;
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}
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