cryptography 2.7.0

Cryptographic algorithms for encryption, digital signatures, key agreement, authentication, and hashing. AES, Chacha20, ED25519, X25519, Argon2, and more. Good cross-platform support.

2.7.0

• Adds a cross-platform of Argon2id, a highly recommended algorithm for password hashing.
• Introduces a dependency on "package:ffi" (a package by Google). A memory allocator in the package is used when the Argon2 implementation distributes computation to multiple isolates.
• Small backwards-compatible changes in Blake2b and DartBlake2b API.

2.6.1

• Fixes incorrect base class constraints.

2.6.0

• Improves Blake2b/Blake2s support:
  • Adds support for using as a MAC algorithm
  • Adds support for custom output lengths
  • Improves test coverage
  • Fixes bugs
• Removes long-deprecated newSink() methods in HashAlgorithm and MacAlgorithm (so Blake2 classes can implement both interfaces).
• Raises Dart SDK minimum to 3.1.0 and other small changes related to dependency constraints.
• Improves documentation.

2.5.0

• Adds enough DER encoding/decoding support for us to use Apple's CryptoKit ECDH/ECDSA functions.
• Improves BrowserHmac/etc. parameter checks.
• Improves documentation.

2.4.0

• Fixes many issues found by adding more tests. Also improves documentation.
• Improves performance of SHA256, HMAC, and PBKDF2 by cutting unnecessary state allocations and futures.
• Some small API refactoring and new class members that don't really affect the publicly visible API. We plan to address most API design issues (some discussed in the issue tracker) in the next major version (3.x).
• Adds support for seck256k1 key type (#135).

2.3.0

• Fixes some small issues.
• Improves documentation.

2.2.0

• The main changes in the the APIs:
  • Adds new elements and parameters in various classes, especially Dart implementations. This can be a breaking change if you extend those classes.
  • Adds PaddingAlgorithm class and support for padding in AES-CBC.
  • Adds CipherState class for processing long / infinite inputs.
  • Adds CipherWand, KeyExchangeWand, and SignatureWand classes.
  • Adds random number generator parameters to class constructors. You can now have deterministic behavior in tests. For example, you can construct BrowserCryptography(random: myRandom).
  • Adds an alternative random number generator, which is about 100 times faster than Random.secure. Random.secure continues to be the default everywhere.
  • Adds support for overwriting secrets in memory (SecretKeyData, KeyPairData) and eliminates unnecessary wrapping of bytes in unmodifiable lists.
  • Adds output buffer parameter for avoiding copying.
• The main changes in the Dart implementations:
  • Improves some ciphers such as Chacha20 and AesCtr so that large inputs don't block the main thread. Instead, data will processed in chunks by default and other things can be scheduled in-between two chunks.
  • Significantly improves performance of Chacha20.poly1305.
• The main changes in the Web Cryptography implementations:
  • Fixes many bugs.
  • Adds support for fallbacks when browsers don't allow Web Cryptography (non-secure browser contexts).
• Improves documentation.

2.1.1

• Fixes small issues.
• Improves documentation.

2.1.0

• Improves performance of Blake2b/Blake2s.
• Add SecretBoxPaddingError that is thrown when the padding of a secret box is invalid.
• Adds some additional constructors such as DartAesGcm.with128bits.
• Fixes various small issues.
• Improves documentation.

2.0.5

• Fixes bugs in Xchacha20.poly1305.

2.0.4

• Fixes an import of 'dart:io' that caused issues.

2.0.3

• Updates dependency constraints and linting rules.

2.0.2

• Fixes an issue in SecretBox.fromConcatenation.
• Improves documentation.

2.0.1

• Documentation fixes.

2.0.0

• Finishes null safety migration.

2.0.0-nullsafety.2

• For ease of use and backwards compatibility with 1.x, adds SecretKey(bytes) factory that just redirects to SecretKeyData(bytes).
• Renames a few identifiers in package:cryptography for consistency. Adds deprecation warnings to the old identifiers.
• Some small internal fixes.
• Improves documentation.

2.0.0-nullsafety.1

• Re-introduces package:crypto as dependency now that a null-safe version exists.
• Better documentation.

2.0.0-nullsafety.0

• BREAKING CHANGES: Many breaking API changes that make the API easier to understand and use.
• IMPORTANT FIXES: Improves tests and fixes a number of bugs we spotted. We don't plan to support the 1.x API. We highly recommend you migrate to the 2.x API.
• The first null-safe version.

1.4.1

• Improves Web Cryptography support internally.
  • The implementation is now easier to read.
  • In older browsers, the implementation fall back to pure Dart implementation if attempt to use Web Cryptography fails.
  • HMAC and HKDF are now able to use Web Cryptography.
• Improves documentation.

1.4.0

• Adds support for cryptography_flutter, which uses operating system implementations.

1.3.0

• Adds PBKDF2 and Blake2b.
• Some internal refactoring.

1.2.1

• Fixes documentation issues.

1.2.0

• Adds RsaPss and RsaPkcs1v15 (Web Cryptography only).
• BREAKING CHANGE: Recently added JwkSecretKey is now EcJwkSecretKey.
• Adds EcJwkSecretKey and EcJwkPublicKey.
• Adds RsaJwkSecretKey and RsaJwkPublicKey.

1.1.1

• Small fixes to documentation and internal declarations.

1.1.0

• BREAKING CHANGE: Cipher methods encrypt / encryptSync and decrypt / decryptSync now use return type Future<Uint8List> / Uint8List instead of previous Future<List<int>> / List<int>. We return instances of Uint8List anyway and we felt it's good to expose this fact despite despite possibility that the change affects some developers. If you are affected by this, you should see compile-time type warnings.
• Cipher has new getters nonceLengthMin and nonceLengthMax.
• AES-GCM is supported in the VM too.
• AES performance is improved significantly.
• Adds JwkSecretKey.
• BREAKING CHANGE: JwkSecretKey (instead of previous unspecified format) becomes the private key storage format for P-256/P-384/P-521. Any attempt to use the previous unspecified format will lead to errors. It's unlikely that anyone is affected by this change so we don't bump the major version.
• SecretKey and SecretKey now have property Map<Object,Object> cachedValues, which can be used for caching objects needed for cryptographic operations (such as handles to Web Cryptography API objects).
• Hides utils from developers.
• Internal refactoring.
• Better documentation.

1.0.4

• Internal refactoring. Splits a number of large source files (such as Web Cryptography support) into more readable smaller files.
• Adds VM implementation stubs for algorithms that are only supported in the browser (e.g. ecdhP256). The methods throw UnimplementedError in VM.
• Improves Poly1305 performance.
• Adds a few more tests.
• Improves documentation.

1.0.3

• Improves documentation.

1.0.2

• Implements automatic use of Web Cryptography API when SHA1 or SHA2 is used in browsers. SHA2-512 becomes up to 100 times faster in browsers. ED25519 becomes approximately 30 times faster in browsers with the improved SHA512.
• Better documentation and benchmarks.

1.0.1

• Implements ed25519.newKeyFromSeed(seed).
• Significantly improves ED25519 performance.
• Small fixes in documentation.

1.0.0

• A stable API.

0.3.6

• Documentation fixes.

0.3.5

• Adds Xchacha20 cipher.
• When authenticated ciphers encounter incorrect MACs, they now throw MacValidationException (instead of returning null, which developers may ignore in some situations).

0.3.4

• Fixes a cipher.name issue and improves documentation.

0.3.3

• Improves documentation.
• Improves outputs of cipher.name.

0.3.2

• Improves documentation.

0.3.1

• Improves documentation.
• Eliminates AES-CBC and AES-CTR dependencies.

0.3.0

• Breaking changes: Removes separate key generator classes. Many API changes designed to reduce chances of developers using the API incorrectly.
• Adds HKDF and ED25519 support.
• Adds more assertions and tests.
• Improves documentation.

0.2.6

• Fixed an issue with dependency constraints that conflict with Flutter SDK.
• SecretKey / SecretKey property bytes is deprecated and replaced with extract() and extractSync() to better support implementations that protect the underlying bytes such as Web Cryptography API.
• Improves documentation.

0.2.5

• Adds AES for non-browser platforms.
• Fixes various bugs and improves test coverage.

0.2.4

• Improves documentation.

0.2.3

• Improves documentation, clarity, test coverage.

0.2.2

• Improves documentation.
• Deprecates ConstantTimeBytesEquality in favor of constantTimeBytesEquality.

0.2.1

• Improves documentation and stops exporting a few declarations.

0.2.0

• Major refactoring and breaking API changes.
• Improves in documentation.
• Adds AES, P256/P384/P521, SHA1, Poly1305, and AEAD_Chacha20_Poly1305.

0.1.2

• Improved documentation

0.1.1

• Fixed example

0.1.0

• Initial version