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denoland-deno/ext/node/polyfills/internal/crypto/util.ts
2024-01-01 19:58:21 +00:00

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TypeScript

// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// Copyright Joyent, Inc. and Node.js contributors. All rights reserved. MIT license.
// TODO(petamoriken): enable prefer-primordials for node polyfills
// deno-lint-ignore-file prefer-primordials
import { notImplemented } from "ext:deno_node/_utils.ts";
import { Buffer } from "node:buffer";
import {
ERR_INVALID_ARG_TYPE,
hideStackFrames,
} from "ext:deno_node/internal/errors.ts";
import {
isAnyArrayBuffer,
isArrayBufferView,
} from "ext:deno_node/internal/util/types.ts";
import { crypto as constants } from "ext:deno_node/internal_binding/constants.ts";
import {
kHandle,
kKeyObject,
} from "ext:deno_node/internal/crypto/constants.ts";
export type EllipticCurve = {
name: string;
ephemeral: boolean;
privateKeySize: number;
publicKeySize: number;
sharedSecretSize: number;
};
export const ellipticCurves: Array<EllipticCurve> = [
{
name: "secp256k1",
privateKeySize: 32,
publicKeySize: 65,
sharedSecretSize: 32,
}, // Weierstrass-class EC used by Bitcoin
{
name: "prime256v1",
privateKeySize: 32,
publicKeySize: 65,
sharedSecretSize: 32,
}, // NIST P-256 EC
{
name: "secp256r1",
privateKeySize: 32,
publicKeySize: 65,
sharedSecretSize: 32,
}, // NIST P-256 EC (same as above)
{
name: "secp384r1",
privateKeySize: 48,
publicKeySize: 97,
sharedSecretSize: 48,
}, // NIST P-384 EC
{
name: "secp224r1",
privateKeySize: 28,
publicKeySize: 57,
sharedSecretSize: 28,
}, // NIST P-224 EC
];
// deno-fmt-ignore
const supportedCiphers = [
"aes-128-ecb", "aes-192-ecb",
"aes-256-ecb", "aes-128-cbc",
"aes-192-cbc", "aes-256-cbc",
"aes128", "aes192",
"aes256", "aes-128-cfb",
"aes-192-cfb", "aes-256-cfb",
"aes-128-cfb8", "aes-192-cfb8",
"aes-256-cfb8", "aes-128-cfb1",
"aes-192-cfb1", "aes-256-cfb1",
"aes-128-ofb", "aes-192-ofb",
"aes-256-ofb", "aes-128-ctr",
"aes-192-ctr", "aes-256-ctr",
"aes-128-gcm", "aes-192-gcm",
"aes-256-gcm"
];
export function getCiphers(): string[] {
return supportedCiphers;
}
let defaultEncoding = "buffer";
export function setDefaultEncoding(val: string) {
defaultEncoding = val;
}
export function getDefaultEncoding(): string {
return defaultEncoding;
}
// This is here because many functions accepted binary strings without
// any explicit encoding in older versions of node, and we don't want
// to break them unnecessarily.
export function toBuf(val: string | Buffer, encoding?: string): Buffer {
if (typeof val === "string") {
if (encoding === "buffer") {
encoding = "utf8";
}
return Buffer.from(val, encoding);
}
return val;
}
export const validateByteSource = hideStackFrames((val, name) => {
val = toBuf(val);
if (isAnyArrayBuffer(val) || isArrayBufferView(val)) {
return;
}
throw new ERR_INVALID_ARG_TYPE(
name,
["string", "ArrayBuffer", "TypedArray", "DataView", "Buffer"],
val,
);
});
const curveNames = ellipticCurves.map((x) => x.name);
export function getCurves(): readonly string[] {
return curveNames;
}
export interface SecureHeapUsage {
total: number;
min: number;
used: number;
utilization: number;
}
export function secureHeapUsed(): SecureHeapUsage {
notImplemented("crypto.secureHeapUsed");
}
export function setEngine(_engine: string, _flags: typeof constants) {
notImplemented("crypto.setEngine");
}
const kAesKeyLengths = [128, 192, 256];
export { kAesKeyLengths, kHandle, kKeyObject };
export default {
getDefaultEncoding,
setDefaultEncoding,
getCiphers,
getCurves,
secureHeapUsed,
setEngine,
validateByteSource,
toBuf,
kHandle,
kKeyObject,
kAesKeyLengths,
};