Polkadot Apps
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    Function xchachaEncrypt

    • Encrypt binary data with XChaCha20-Poly1305.

      The 24-byte nonce makes random nonce generation safe for virtually unlimited encryptions under the same key (~2^96 nonce space vs 2^48 for 12-byte). This is the recommended symmetric cipher for most use cases.

      Parameters

      • data: Uint8Array

        Binary data to encrypt.

      • key: Uint8Array

        32-byte encryption key.

      Returns { ciphertext: Uint8Array; nonce: Uint8Array }

      Object containing ciphertext (with 16-byte tag) and 24-byte nonce.

      If key is not exactly 32 bytes.

      import { xchachaEncrypt, xchachaDecrypt, randomBytes } from "@polkadot-apps/crypto";

      const key = randomBytes(32);
      const { ciphertext, nonce } = xchachaEncrypt(data, key);
      const plaintext = xchachaDecrypt(ciphertext, key, nonce);

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