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Crypto (@std/crypto)

@std/crypto provides synchronous cryptography with no external dependencies.

import { sha256, createHash, hmacSha256, randomUUID } from "@std/crypto";


console.log(sha256("hello"));                        // hex digest
console.log(createHash("sha512").update("a").update("b").digestHex());
console.log(hmacSha256("key", "message"));
console.log(randomUUID());

Digest / HMAC / PBKDF2 inputs are u8[] (a string coerces to its UTF-8 bytes). One-shot helpers return a lowercase hex string; the Hash type also offers raw-bytes and base64 forms.

Hashing

md5(data: u8[]): string
sha1(data: u8[]): string
sha256(data: u8[]): string
sha512(data: u8[]): string


createHash(algorithm: string): Hash   // "md5","sha1","sha224","sha256","sha384","sha512"
hash.update(data: u8[]): Hash         // chainable
hash.digestHex(): string
hash.digestBase64(): string
hash.digestBytes(): u8[]

HMAC & PBKDF2

hmacSha256(key: u8[], data: u8[]): string
hmacSha512(key: u8[], data: u8[]): string
pbkdf2Sync(password: string, salt: string, iterations: i32, keylen: i32, digest: string): u8[]

Randomness & comparison

randomBytes(n: i32): u8[]              // CSPRNG
randomInt(min: i32, max: i32): i32     // uniform in [min, max)
randomUUID(): string                   // RFC 4122 v4
timingSafeEqual(a: u8[], b: u8[]): boolean   // constant-time