coolaj86/eckles.js
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v1.2.0 add ability to read ssh pub files

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This commit is contained in:
AJ ONeal 2018-11-20 23:55:17 -07:00
parent 8b7e07e172
commit 67bb76d19e
4 changed files with 46 additions and 4 deletions
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2
README.md
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@ -9,6 +9,7 @@ ECDSA (elliptic curve) tools. Lightweight. Zero Dependencies. Universal compatib
* [x] PEM-to-JWK
* [x] JWK-to-PEM
* [x] SSH "pub" format
This project is fully functional and tested (and the code is pretty clean).
@ -18,6 +19,7 @@ It is considered to be complete, but if you find a bug please open an issue.
* [x] SEC1/X9.62, PKCS#8, SPKI/PKIX
* [x] P-256 (prime256v1, secp256r1), P-384 (secp384r1)
* [x] SSH (RFC4716), (RFC 4716/SSH2)
```js
var eckles = require('eckles');

35
lib/eckles.js
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@ -16,6 +16,13 @@ var OBJ_ID_EC_384 = '06 05 2B81040022'.replace(/\s+/g, '').toLowerCase();
// ecPublicKey (ANSI X9.62 public key type)
var OBJ_ID_EC_PUB = '06 07 2A8648CE3D0201'.replace(/\s+/g, '').toLowerCase();
// 19 e c d s a - s h a 2 - n i s t p 2 5 6
var SSH_EC_P256 = '00000013 65 63 64 73 61 2d 73 68 61 32 2d 6e 69 73 74 70 32 35 36'
.replace(/\s+/g, '').toLowerCase();
// 19 e c d s a - s h a 2 - n i s t p 3 8 4
var SSH_EC_P384 = '00000013 65 63 64 73 61 2d 73 68 61 32 2d 6e 69 73 74 70 33 38 34'
.replace(/\s+/g, '').toLowerCase();
// The one good thing that came from the b***kchain hysteria: good EC documentation
// https://davidederosa.com/basic-blockchain-programming/elliptic-curve-keys/
@ -226,11 +233,35 @@ EC.parseSpki = function parsePem(u8, jwk) {
};
EC.parsePkix = EC.parseSpki;
EC.parseSsh = function (pem) {
var jwk = { kty: 'EC', crv: null, x: null, y: null };
var b64 = pem.split(/\s+/g)[1];
var buf = Buffer.from(b64, 'base64');
var hex = buf.toString('hex');
var index = 40;
var len;
if (0 === hex.indexOf(SSH_EC_P256)) {
jwk.crv = 'P-256';
len = 32;
} else if (0 === hex.indexOf(SSH_EC_P384)) {
jwk.crv = 'P-384';
len = 48;
}
var x = buf.slice(index, index + len);
var y = buf.slice(index + len, index + len + len);
jwk.x = PEM._toUrlSafeBase64(x);
jwk.y = PEM._toUrlSafeBase64(y);
return jwk;
};
/*global Promise*/
EC.parse = function parseEc(opts) {
return Promise.resolve().then(function () {
if (!opts || !opts.pem) {
throw new Error("must pass { pem: pem }");
if (!opts || !opts.pem || 'string' !== typeof opts.pem) {
throw new Error("must pass { pem: pem } as a string");
}
if (0 === opts.pem.indexOf('ecdsa-sha2-')) {
return EC.parseSsh(opts.pem);
}
var pem = opts.pem;
var u8 = PEM.parseBlock(pem).der;

4
package.json
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@ -1,7 +1,7 @@
{
"name": "eckles",
"version": "1.1.1",
"description": "PEM-to-JWK and JWK-to-PEM for ECDSA keys in a lightweight, zero-dependency library focused on perfect universal compatibility.",
"version": "1.2.0",
"description": "PEM-to-JWK and JWK-to-PEM (and SSH) for ECDSA keys in a lightweight, zero-dependency library focused on perfect universal compatibility.",
"homepage": "https://git.coolaj86.com/coolaj86/eckles.js",
"main": "index.js",
"bin": {

9
test.sh
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@ -11,6 +11,10 @@ node bin/eckles.js fixtures/privkey-ec-p256.pkcs8.pem | tee fixtures/privkey-ec-
diff fixtures/privkey-ec-p256.jwk.json fixtures/privkey-ec-p256.jwk.2
node bin/eckles.js fixtures/pub-ec-p256.spki.pem | tee fixtures/pub-ec-p256.jwk.2
diff fixtures/pub-ec-p256.jwk.json fixtures/pub-ec-p256.jwk.2
#
node bin/eckles.js fixtures/pub-ec-p256.ssh.pub | tee fixtures/pub-ec-p256.jwk.2
diff fixtures/pub-ec-p256.jwk.2 fixtures/pub-ec-p256.jwk.2
echo ""
echo ""
@ -22,6 +26,10 @@ node bin/eckles.js fixtures/privkey-ec-p384.pkcs8.pem | tee fixtures/privkey-ec-
diff fixtures/privkey-ec-p384.jwk.json fixtures/privkey-ec-p384.jwk.2.2
node bin/eckles.js fixtures/pub-ec-p384.spki.pem | tee fixtures/pub-ec-p384.jwk.2
diff fixtures/pub-ec-p384.jwk.json fixtures/pub-ec-p384.jwk.2
#
node bin/eckles.js fixtures/pub-ec-p384.ssh.pub | tee fixtures/pub-ec-p384.jwk.2
diff fixtures/pub-ec-p384.jwk.2 fixtures/pub-ec-p384.jwk.2
echo ""
echo ""
@ -39,6 +47,7 @@ diff fixtures/pub-ec-p256.spki.pem fixtures/pub-ec-p256.spki.pem.2
node bin/eckles.js fixtures/pub-ec-p256.jwk.json ssh | tee fixtures/pub-ec-p256.ssh.pub.2
diff fixtures/pub-ec-p256.ssh.pub fixtures/pub-ec-p256.ssh.pub.2
echo ""
echo ""
echo "Testing JWK-to-PEM P-384"