JavaScript中的BLAKE2s加密哈希函数.zip

BLAKE2s implementation in JavaScript ==================================== BLAKE2 is a fast and secure cryptographic hash function. This is a pure JavaScript public domain implementation of its BLAKE2s flavor (currently without tree mode support). * [BLAKE2s-js Demo](https://dchest.github.io/blake2s-js/) * [BLAKE2 Website](https://blake2.net) [ ](https://travis-ci.org/dchest/blake2s-js) **This implementation is maintained, but will not receive new features. If you're looking for a full implementation of BLAKE2s, BLAKE2Xs and BLAKE2b, see my packages from [StableLib](https://github.com/StableLib/stablelib): `@stablelib/blake2s`, `@stablelib/blake2xs`, and `@stablelib/blake2b`.** Installation ------------ Via NPM: $ npm install blake2s-js or just download `blake2s.min.js`. Usage ----- ### new BLAKE2s(digestLength, key) ### new BLAKE2s(digestLength, config) Creates a new instance of BLAKE2s hash with the given length of digest (default and maximum 32) and an optional secret key (a `Uint8Array` or `Array` of bytes) or config object in the following format: { salt: // 8-byte Uint8Array or Array of bytes personalization: // 8-byte Uint8Array or Array of bytes key: // 0-32-byte Uint8Array or Array of bytes } All keys in config are optional. #### .update(data[, offset, length]) Updates the hash with data (a `Uint8Array` or `Array` of bytes). starting at the given `offset` (optional, defaults to 0) and consuming the given `length` (optional, defaults to the length of `data` minus `offset`). Returns this instance to enable method chaining. #### .digest() Returns a `Uint8Array` with the digest of consumed data. Further updates will throw error. Repeat calls of `digest()` will return the same digest. #### .hexDigest() Like `digest()`, but returns a hex-encoded string. #### BLAKE2s.digestLength = 32 Maximum digest length. #### BLAKE2s.blockLength = 64 Block size of the hash function. #### BLAKE2s.keyLength = 32 Maximum key length. #### BLAKE2s.personalizationLength = 8 Length of personalization parameter. #### BLAKE2s.saltLength = 8 Length of salt parameter. Example ------- ```javascript var h = new BLAKE2s(32); h.update(new Uint8Array([1,2,3])); h.hexDigest(); // returns string with hex digest h.digest(); // returns Uint8Array // Keyed: var key = new Uint8Array(BLAKE2s.keyLength); window.crypto.getRandomValues(key); var h = new BLAKE2s(32, key); ... // Keyed and salted: var key = new Uint8Array(BLAKE2s.keyLength); var salt = new Uint8Array(BLAKE2s.saltLength); window.crypto.getRandomValues(key); window.crypto.getRandomValues(salt); var h = new BLAKE2s(32, { key: key, salt: salt }); ... // Personalized: var data = new Uint8Array([1, 2, 3]); var pers1 = new Uint8Array([1, 0, 0, 0, 0, 0, 0, 0]); var h1 = new BLAKE2s(32, { personalization: pers1 }); h1.update(data); var pers2 = new Uint8Array([2, 0, 0, 0, 0, 0, 0, 0]); var h2 = new BLAKE2s(32, { personalization: pers2 }); h2.update(data); h1.hexDigest() !== h2.hexDigest() // true ```