BrowserCryptography class

An implementation of Cryptography that uses Web Cryptography API for better performance in browsers.

Browsers support Web Cryptography only in secure (HTTPS) contexts. In non-secure contexts, pure Dart implementations will be used. You can check whether Web Cryptography is used in the current environment by reading the value of BrowserCryptography.isSupported.

Optimized algorithms

The following configurations are optimized using Web Cryptography:

• AesCbc
  • Only when key length is 128 or 256 bits.
  • Only when padding is PaddingAlgorithm.pkcs7.
• AesCtr
  • Only when key length is 128 or 256 bits.
• AesGcm
  • Only when key length is 128 or 256 bits.
• Ecdh
• Ecdsa
  • Only when hash is Sha256, Sha384, or Sha512.
• Hkdf
  • Only when hmac is Hmac.sha256, Hmac.sha384, or Hmac.sha512.
• Hmac
  • Only when hash is Sha256, Sha384, or Sha512.
• Pbkdf2
• RsaPss
• RsaSsaPkcs1v15
• Sha1
• Sha256
• Sha384
• Sha512

The class extends DartCryptography so other factory methods will return pure Dart implementations.