@othent/kms-unbundled/dist/lib/utils/arweaveUtils.js

Arweave Oauth Othent wallets enabled Google Key Management Service.

import * as B64js from "base64-js";
export function concatBuffers(buffers) {
    let total_length = 0;
    for (let i = 0; i < buffers.length; i++) {
        total_length += buffers[i].byteLength;
    }
    let temp = new Uint8Array(total_length);
    let offset = 0;
    temp.set(new Uint8Array(buffers[0]), offset);
    offset += buffers[0].byteLength;
    for (let i = 1; i < buffers.length; i++) {
        temp.set(new Uint8Array(buffers[i]), offset);
        offset += buffers[i].byteLength;
    }
    return temp;
}
export function b64UrlToString(b64UrlString) {
    let buffer = b64UrlToBuffer(b64UrlString);
    return bufferToString(buffer);
}
export function bufferToString(buffer) {
    return new TextDecoder("utf-8", { fatal: true }).decode(buffer);
}
export function stringToBuffer(string) {
    return new TextEncoder().encode(string);
}
export function stringToB64Url(string) {
    return bufferTob64Url(stringToBuffer(string));
}
export function b64UrlToBuffer(b64UrlString) {
    return new Uint8Array(B64js.toByteArray(b64UrlDecode(b64UrlString)));
}
export function bufferTob64(buffer) {
    return B64js.fromByteArray(new Uint8Array(buffer));
}
export function bufferTob64Url(buffer) {
    return b64UrlEncode(bufferTob64(buffer));
}
export function b64UrlEncode(b64UrlString) {
    return b64UrlString
        .replace(/\+/g, "-")
        .replace(/\//g, "_")
        .replace(/\=/g, "");
}
export function b64UrlDecode(b64UrlString) {
    b64UrlString = b64UrlString.replace(/\-/g, "+").replace(/\_/g, "/");
    let padding;
    b64UrlString.length % 4 == 0
        ? (padding = 0)
        : (padding = 4 - (b64UrlString.length % 4));
    return b64UrlString.concat("=".repeat(padding));
}
export async function hash(data, algorithm = "SHA-256") {
    let digest = await crypto.subtle.digest(algorithm, data);
    return new Uint8Array(digest);
}
export async function ownerToAddress(owner) {
    return bufferTob64Url(await hash(b64UrlToBuffer(owner)));
}
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