Function encryptArrayBuffer

src/encryptOpenSSL.ts:38–74

(
  arrBuf: ArrayBuffer,
  password: string,
  rounds: number = DEFAULT_ITER,
  saltHex = ""
)

};

export const encryptArrayBuffer = async (
  arrBuf: ArrayBuffer,
  password: string,
  rounds: number = DEFAULT_ITER,
  saltHex = ""
) => {
  let salt: Uint8Array;
  if (saltHex !== "") {
    salt = hexStringToTypedArray(saltHex);
  } else {
    salt = window.crypto.getRandomValues(new Uint8Array(8));
  }

  const derivedKey = await getKeyIVFromPassword(salt, password, rounds);
  const key = derivedKey.slice(0, 32);
  const iv = derivedKey.slice(32, 32 + 16);

  const keyCrypt = await window.crypto.subtle.importKey(
    "raw",
    key,
    { name: "AES-CBC" },
    false,
    ["encrypt", "decrypt"]
  );

  const enc = (await window.crypto.subtle.encrypt(
    { name: "AES-CBC", iv },
    keyCrypt,
    arrBuf
  )) as ArrayBuffer;

  const prefix = new TextEncoder().encode("Salted__");

  const res = new Uint8Array([...prefix, ...salt, ...new Uint8Array(enc)]);

  return bufferToArrayBuffer(res);
};

export const decryptArrayBuffer = async (
  arrBuf: ArrayBuffer,