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new 0.242.0 Jan 22, 2026
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0.239.0 Dec 20, 2025
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0.3.0 Nov 23, 2020

#663 in Cryptography

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5,096 downloads per month
Used in 64 crates (23 directly)

MIT license

1MB
27K SLoC

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deno_crypto

This crate implements the Web Cryptography API.

Spec: https://www.w3.org/TR/WebCryptoAPI/

Usage Example

From javascript, include the extension's source, and assign CryptoKey, crypto, Crypto, and SubtleCrypto to the global scope:

import * as crypto from "ext:deno_crypto/00_crypto.js";

Object.defineProperty(globalThis, "CryptoKey", {
  value: crypto.CryptoKey,
  enumerable: false,
  configurable: true,
  writable: true,
});

Object.defineProperty(globalThis, "crypto", {
  value: crypto.crypto,
  enumerable: false,
  configurable: true,
  writable: false,
});

Object.defineProperty(globalThis, "Crypto", {
  value: crypto.Crypto,
  enumerable: false,
  configurable: true,
  writable: true,
});

Object.defineProperty(globalThis, "SubtleCrypto", {
  value: crypto.SubtleCrypto,
  enumerable: false,
  configurable: true,
  writable: true,
});

Then from rust, provide: deno_crypto::deno_crypto::init(Option<u64>) in the extensions field of your RuntimeOptions

Where the Option<u64> represents an optional seed for initialization.

Dependencies

  • deno_webidl: Provided by the deno_webidl crate
  • deno_web: Provided by the deno_web crate

Provided ops

Following ops are provided, which can be accessed through Deno.ops:

  • op_crypto_get_random_values
  • op_crypto_generate_key
  • op_crypto_sign_key
  • op_crypto_verify_key
  • op_crypto_derive_bits
  • op_crypto_import_key
  • op_crypto_export_key
  • op_crypto_encrypt
  • op_crypto_decrypt
  • op_crypto_subtle_digest
  • op_crypto_random_uuid
  • op_crypto_wrap_key
  • op_crypto_unwrap_key
  • op_crypto_base64url_decode
  • op_crypto_base64url_encode
  • x25519::op_crypto_generate_x25519_keypair
  • x25519::op_crypto_derive_bits_x25519
  • x25519::op_crypto_import_spki_x25519
  • x25519::op_crypto_import_pkcs8_x25519
  • ed25519::op_crypto_generate_ed25519_keypair
  • ed25519::op_crypto_import_spki_ed25519
  • ed25519::op_crypto_import_pkcs8_ed25519
  • ed25519::op_crypto_sign_ed25519
  • ed25519::op_crypto_verify_ed25519
  • ed25519::op_crypto_export_spki_ed25519
  • ed25519::op_crypto_export_pkcs8_ed25519
  • ed25519::op_crypto_jwk_x_ed25519
  • x25519::op_crypto_export_spki_x25519
  • x25519::op_crypto_export_pkcs8_x25519

Dependencies

~184MB
~4M SLoC