@gray-adeyi/korapay-sdk/esm/src/utils.js

A korapay client SDK for the javascript runtime.

const IV_LENGTH = 16;
// deno-lint-ignore no-explicit-any
export async function encryptAes256(encryptionKey, data) {
    const iv = crypto.getRandomValues(new Uint8Array(IV_LENGTH));
    const jsonData = JSON.stringify(data);
    const encodedData = new TextEncoder().encode(jsonData);
    const cryptoKey = await importKey(encryptionKey);
    const encryptedData = await crypto.subtle.encrypt({ name: "AES-GCM", iv }, cryptoKey, encodedData);
    const encryptedArray = new Uint8Array(encryptedData);
    const cipherText = encryptedArray.slice(0, -16);
    const authTag = encryptedArray.slice(-16);
    const ivAsHex = toHex(iv);
    const cipherTextAsHex = toHex(cipherText);
    const authTagAsHex = toHex(authTag);
    return `${ivAsHex}:${cipherTextAsHex}:${authTagAsHex}`;
}
function toHex(byteArray) {
    return Array.from(byteArray).map((byte) => byte.toString(16).padStart(2, "0"))
        .join("");
}
function toUint8Array(value) {
    const len = value.length;
    const bytes = new Uint8Array(len);
    for (let i = 0; i < len; i++) {
        bytes[i] = value.charCodeAt(i);
    }
    return bytes;
}
async function importKey(encryptionKey) {
    const rawKey = toUint8Array(encryptionKey);
    return await crypto.subtle.importKey("raw", rawKey, { name: "AES-GCM" }, false, ["encrypt"]);
}