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AJ ONeal 5 年前
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  1. 262
      README.md
  2. 3
      keypairs.js
  3. 30
      package-lock.json
  4. 33
      package.json

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README.md

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# root-keypairs.js
# @root/keypairs
Lightweight, Zero-Dependency RSA and EC/ECDSA crypto for Node.js and Browsers
Lightweight JavaScript RSA and ECDSA utils that work on Windows, Mac, and Linux
using modern node.js APIs (no need for C compiler).
A thin wrapper around [Eckles.js (ECDSA)](https://git.coolaj86.com/coolaj86/eckles.js/)
and [Rasha.js (RSA)](https://git.coolaj86.com/coolaj86/rasha.js/).
# Features
- [x] Generate keypairs
- [x] RSA
- [x] ECDSA (P-256, P-384)
- [x] PEM-to-JWK (and SSH-to-JWK)
- [x] JWK-to-PEM (and JWK-to-SSH)
- [x] Create JWTs (and sign JWS)
- [x] SHA256 JWK Thumbprints
- [ ] JWK fetching. See [Keyfetch.js](https://npmjs.com/packages/keyfetch/)
- [ ] OIDC
- [ ] Auth0
- [ ] CLI
- See [keypairs-cli](https://npmjs.com/packages/keypairs-cli/)
<!--
* [ ] generate CSR (DER as PEM or base64url)
-->
# Progress
This is fully functional, but the re-usable code from ACME.js hasn't been fully teased out for the v2.0 release.
(SSH conversions have not yet made it to 2.0)
# Usage
A brief introduction to the APIs:
```js
// generate a new keypair as jwk
// (defaults to EC P-256 when no options are specified)
Keypairs.generate().then(function(pair) {
console.log(pair.private);
console.log(pair.public);
});
```
```js
// JWK to PEM
// (supports various 'format' and 'encoding' options)
return Keypairs.export({ jwk: pair.private, format: 'pkcs8' }).then(function(
pem
) {
console.log(pem);
});
```
```js
// PEM to JWK
return Keypairs.import({ pem: pem }).then(function(jwk) {
console.log(jwk);
});
```
```js
// Thumbprint a JWK (SHA256)
return Keypairs.thumbprint({ jwk: jwk }).then(function(thumb) {
console.log(thumb);
});
```
```js
// Sign a JWT (aka compact JWS)
return Keypairs.signJwt({
jwk: pair.private
, iss: 'https://example.com'
, exp: '1h'
// optional claims
, claims: {
, sub: 'jon.doe@gmail.com'
}
});
```
By default ECDSA keys will be used since they've had native support in node
_much_ longer than RSA has, and they're smaller, and faster to generate.
## API Overview
- generate (JWK)
- parse (PEM)
- parseOrGenerate (PEM to JWK)
- import (PEM-to-JWK)
- export (JWK-to-PEM, private or public)
- publish (Private JWK to Public JWK)
- thumbprint (JWK SHA256)
- signJwt
- signJws
#### Keypairs.generate(options)
Generates a public/private pair of JWKs as `{ private, public }`
Option examples:
- RSA `{ kty: 'RSA', modulusLength: 2048 }`
- ECDSA `{ kty: 'ECDSA', namedCurve: 'P-256' }`
When no options are supplied EC P-256 (also known as `prime256v1` and `secp256r1`) is used by default.
#### Keypairs.parse(options)
Parses either a JWK (encoded as JSON) or an x509 (encdode as PEM) and gives
back the JWK representation.
Option Examples:
- JWK { key: '{ "kty":"EC", ... }' }
- PEM { key: '-----BEGIN PRIVATE KEY-----\n...' }
- Public Key Only { key: '-----BEGIN PRIVATE KEY-----\n...', public: true }
- Must Have Private Key { key: '-----BEGIN PUBLIC KEY-----\n...', private: true }
Example:
```js
Keypairs.parse({ key: '...' }).catch(function(e) {
// could not be parsed or was a public key
console.warn(e);
return Keypairs.generate();
});
```
#### Keypairs.parseOrGenerate({ key, throw, [generate opts]... })
Parses the key. Logs a warning on failure, marches on.
(a shortcut for the above, with `private: true`)
Option Examples:
- parse key if exist, otherwise generate `{ key: process.env["PRIVATE_KEY"] }`
- generated key curve `{ key: null, namedCurve: 'P-256' }`
- generated key modulus `{ key: null, modulusLength: 2048 }`
Example:
```js
Keypairs.parseOrGenerate({ key: process.env['PRIVATE_KEY'] }).then(function(
pair
) {
console.log(pair.public);
});
```
Great for when you have a set of shared keys for development and randomly
generated keys in
#### Keypairs.import({ pem: '...' }
Takes a PEM in pretty much any format (PKCS1, SEC1, PKCS8, SPKI) and returns a JWK.
#### Keypairs.export(options)
Exports a JWK as a PEM.
Exports PEM in PKCS8 (private) or SPKI (public) by default.
Options
```js
{ jwk: jwk
, public: true
, encoding: 'pem' // or 'der'
, format: 'pkcs8' // or 'ssh', 'pkcs1', 'sec1', 'spki'
}
```
#### Keypairs.publish({ jwk: jwk, exp: '3d', use: 'sig' })
Promises a public key that adheres to the OIDC and Auth0 spec (plus expiry), suitable to be published to a JWKs URL:
```
{ "kty": "EC"
, "crv": "P-256"
, "x": "..."
, "y": "..."
, "kid": "..."
, "use": "sig"
, "exp": 1552074208
}
```
In particular this adds "use" and "exp".
#### Keypairs.thumbprint({ jwk: jwk })
Promises a JWK-spec thumbprint: URL Base64-encoded sha256
#### Keypairs.signJwt({ jwk, header, claims })
Returns a JWT (otherwise known as a protected JWS in "compressed" format).
```js
{ jwk: jwk
// required claims
, iss: 'https://example.com'
, exp: '15m'
// all optional claims
, claims: {
}
}
```
Exp may be human readable duration (i.e. 1h, 15m, 30s) or a datetime in seconds.
Header defaults:
```js
{ kid: thumbprint
, alg: 'xS256'
, typ: 'JWT'
}
```
Payload notes:
- `iat: now` is added by default (set `false` to disable)
- `exp` must be set (set `false` to disable)
- `iss` should be the base URL for JWK lookup (i.e. via OIDC, Auth0)
Notes:
`header` is actually the JWS `protected` value, as all JWTs use protected headers (yay!)
and `claims` are really the JWS `payload`.
#### Keypairs.signJws({ jwk, header, protected, payload })
This is provided for APIs like ACME (Let's Encrypt) that use uncompressed JWS (instead of JWT, which is compressed).
Options:
- `header` not what you think. Leave undefined unless you need this for the spec you're following.
- `protected` is the typical JWT-style header
- `kid` and `alg` will be added by default (these are almost always required), set `false` explicitly to disable
- `payload` can be JSON, a string, or even a buffer (which gets URL Base64 encoded)
- you must set this to something, even if it's an empty string, object, or Buffer
# Additional Documentation
Keypairs.js provides a 1-to-1 mapping to the Rasha.js and Eckles.js APIs for the following:
- generate(options)
- import({ pem: '---BEGIN...' })
- export({ jwk: { kty: 'EC', ... })
- thumbprint({ jwk: jwk })
If you want to know the algorithm-specific options that are available for those
you'll want to take a look at the corresponding documentation:
- See ECDSA documentation at [Eckles.js](https://git.coolaj86.com/coolaj86/eckles.js/)
- See RSA documentation at [Rasha.js](https://git.coolaj86.com/coolaj86/rasha.js/)

3
keypairs.js

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'use strict';
module.exports = require('@root/acme/keypairs');

30
package-lock.json

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{
"name": "@root/keypairs",
"version": "1.0.0-wip.0",
"lockfileVersion": 1,
"requires": true,
"dependencies": {
"@root/acme": {
"version": "3.0.0-wip.0",
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"requires": {
"@root/csr": "^1.0.0-wip.0",
"@root/encoding": "^1.0.1"
}
},
"@root/csr": {
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"requires": {
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}
}
}

33
package.json

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{
"name": "@root/keypairs",
"version": "1.0.0-wip.0",
"description": "Lightweight, Zero-Dependency RSA and EC/ECDSA crypto for Node.js and Browsers",
"main": "keypairs.js",
"scripts": {
"test": "node tests"
},
"files": [
"*.js",
"lib",
"dist"
],
"repository": {
"type": "git",
"url": "https://git.rootprojects.org/root/csr.js.git"
},
"keywords": [
"ASN.1",
"DER",
"PEM",
"x509",
"RSA",
"EC",
"ECDSA",
"asn1"
],
"author": "AJ ONeal <coolaj86@gmail.com> (https://coolaj86.com/)",
"license": "MPL-2.0",
"dependencies": {
"@root/acme": "^3.0.0-wip.0"
}
}
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