cleanup (and JWK-to-PEM prep)
This commit is contained in:
AJ ONeal
parent
5ea00472c3
commit
f798abf2a6
4 changed files with 136 additions and 71 deletions
119
lib/rasha.js
119
lib/rasha.js
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@ -5,7 +5,6 @@ var SSH = require('./ssh.js');
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var PEM = require('./pem.js');
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var x509 = require('./x509.js');
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var ASN1 = require('./asn1.js');
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var Enc = require('./encoding.js');
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/*global Promise*/
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RSA.parse = function parseRsa(opts) {
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@ -26,17 +25,13 @@ RSA.parse = function parseRsa(opts) {
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var meta = x509.guess(block.der, asn1);
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if ('pkcs1' === meta.format) {
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jwk = RSA.parsePkcs1(block.der, asn1, jwk);
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jwk = x509.parsePkcs1(block.der, asn1, jwk);
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} else {
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jwk = RSA.parsePkcs8(block.der, asn1, jwk);
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jwk = x509.parsePkcs8(block.der, asn1, jwk);
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}
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if (opts.public) {
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jwk = {
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kty: jwk.kty
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, n: jwk.n
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, e: jwk.e
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};
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jwk = RSA.nueter(jwk);
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}
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return jwk;
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});
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@ -58,63 +53,65 @@ RSAPrivateKey ::= SEQUENCE {
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}
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*/
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RSA.parsePkcs1 = function parseRsaPkcs1(buf, asn1, jwk) {
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if (!asn1.children.every(function(el) {
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return 0x02 === el.type;
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})) {
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throw new Error("not an RSA PKCS#1 public or private key (not all ints)");
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RSA.pack = function (opts) {
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return Promise.resolve().then(function () {
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if (!opts || !opts.jwk || 'object' !== typeof opts.jwk) {
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throw new Error("must pass { jwk: jwk }");
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}
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if (2 === asn1.children.length) {
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jwk.n = Enc.bufToUrlBase64(asn1.children[0].value);
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jwk.e = Enc.bufToUrlBase64(asn1.children[1].value);
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return jwk;
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} else if (asn1.children.length >= 9) {
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// the standard allows for "otherPrimeInfos", hence at least 9
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jwk.n = Enc.bufToUrlBase64(asn1.children[1].value);
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jwk.e = Enc.bufToUrlBase64(asn1.children[2].value);
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jwk.d = Enc.bufToUrlBase64(asn1.children[3].value);
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jwk.p = Enc.bufToUrlBase64(asn1.children[4].value);
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jwk.q = Enc.bufToUrlBase64(asn1.children[5].value);
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jwk.dp = Enc.bufToUrlBase64(asn1.children[6].value);
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jwk.dq = Enc.bufToUrlBase64(asn1.children[7].value);
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jwk.qi = Enc.bufToUrlBase64(asn1.children[8].value);
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return jwk;
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var jwk = JSON.parse(JSON.stringify(opts.jwk));
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var format = opts.format;
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var pub = opts.public;
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if (pub || -1 !== [ 'spki', 'pkix', 'ssh', 'rfc4716' ].indexOf(format)) {
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jwk = RSA.nueter(jwk);
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}
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if ('RSA' !== jwk.kty) {
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throw new Error("options.jwk.kty must be 'RSA' for RSA keys");
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}
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if (!jwk.p) {
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// TODO test for n and e
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pub = true;
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if (!format || 'pkcs1' === format) {
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format = 'pkcs1';
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} else if (-1 !== [ 'spki', 'pkix' ].indexOf(format)) {
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format = 'spki';
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} else if (-1 !== [ 'ssh', 'rfc4716' ].indexOf(format)) {
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format = 'ssh';
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} else {
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throw new Error("not an RSA PKCS#1 public or private key (wrong number of ints)");
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throw new Error("options.format must be 'spki', 'pkcs1', or 'ssh' for public RSA keys, not ("
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+ typeof format + ") " + format);
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}
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} else {
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// TODO test for all necessary keys (d, p, q ...)
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if (!format || 'pkcs1' === format) {
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format = 'pkcs1';
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} else if ('pkcs8' !== format) {
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throw new Error("options.format must be 'pkcs1' or 'pkcs8' for private RSA keys");
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}
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}
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if ('pkcs1' === format) {
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return PEM.packBlock({ type: "RSA PRIVATE KEY", bytes: x509.packPkcs1(jwk) });
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} else if ('pkcs8' === format) {
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return PEM.packBlock({ type: "PRIVATE KEY", bytes: x509.packPkcs8(jwk) });
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} else if (-1 !== [ 'spki', 'pkix' ].indexOf(format)) {
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return PEM.packBlock({ type: "PUBLIC KEY", bytes: x509.packSpki(jwk) });
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} else if (-1 !== [ 'ssh', 'rfc4716' ].indexOf(format)) {
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return SSH.packSsh(jwk);
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} else {
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throw new Error("Sanity Error: reached unreachable code block with format: " + format);
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}
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});
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};
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RSA.toPem = RSA.export = RSA.pack;
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RSA.parsePkcs8 = function parseRsaPkcs8(buf, asn1, jwk) {
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if (2 === asn1.children.length
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&& 0x03 === asn1.children[1].type
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&& 0x30 === asn1.children[1].value[0]) {
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asn1 = ASN1.parse(asn1.children[1].value);
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jwk.n = Enc.bufToUrlBase64(asn1.children[0].value);
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jwk.e = Enc.bufToUrlBase64(asn1.children[1].value);
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} else if (3 === asn1.children.length
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&& 0x04 === asn1.children[2].type
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&& 0x30 === asn1.children[2].children[0].type
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&& 0x02 === asn1.children[2].children[0].children[0].type) {
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asn1 = asn1.children[2].children[0];
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jwk.n = Enc.bufToUrlBase64(asn1.children[1].value);
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jwk.e = Enc.bufToUrlBase64(asn1.children[2].value);
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jwk.d = Enc.bufToUrlBase64(asn1.children[3].value);
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jwk.p = Enc.bufToUrlBase64(asn1.children[4].value);
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jwk.q = Enc.bufToUrlBase64(asn1.children[5].value);
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jwk.dp = Enc.bufToUrlBase64(asn1.children[6].value);
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jwk.dq = Enc.bufToUrlBase64(asn1.children[7].value);
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jwk.qi = Enc.bufToUrlBase64(asn1.children[8].value);
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} else {
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throw new Error("not an RSA PKCS#8 public or private key (wrong format)");
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}
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// snip the _private_ parts... hAHAHAHA!
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RSA.nueter = function (jwk) {
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// (snip rather than new object to keep potential extra data)
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// otherwise we could just do this:
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// return { kty: jwk.kty, n: jwk.n, e: jwk.e };
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[ 'p', 'q', 'd', 'dp', 'dq', 'qi' ].forEach(function (key) {
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if (key in jwk) { jwk[key] = undefined; }
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return jwk;
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});
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return jwk;
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};
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64
lib/x509.js
64
lib/x509.js
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@ -1,7 +1,8 @@
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'use strict';
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//var ASN1 = require('./asn1.js');
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var x509 = module.exports;
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var ASN1 = require('./asn1.js');
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var Enc = require('./encoding.js');
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x509.guess = function (der, asn1) {
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// accepting der for compatability with other usages
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@ -29,3 +30,64 @@ x509.guess = function (der, asn1) {
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return meta;
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};
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x509.parsePkcs1 = function parseRsaPkcs1(buf, asn1, jwk) {
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if (!asn1.children.every(function(el) {
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return 0x02 === el.type;
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})) {
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throw new Error("not an RSA PKCS#1 public or private key (not all ints)");
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}
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if (2 === asn1.children.length) {
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jwk.n = Enc.bufToUrlBase64(asn1.children[0].value);
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jwk.e = Enc.bufToUrlBase64(asn1.children[1].value);
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return jwk;
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} else if (asn1.children.length >= 9) {
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// the standard allows for "otherPrimeInfos", hence at least 9
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jwk.n = Enc.bufToUrlBase64(asn1.children[1].value);
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jwk.e = Enc.bufToUrlBase64(asn1.children[2].value);
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jwk.d = Enc.bufToUrlBase64(asn1.children[3].value);
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jwk.p = Enc.bufToUrlBase64(asn1.children[4].value);
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jwk.q = Enc.bufToUrlBase64(asn1.children[5].value);
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jwk.dp = Enc.bufToUrlBase64(asn1.children[6].value);
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jwk.dq = Enc.bufToUrlBase64(asn1.children[7].value);
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jwk.qi = Enc.bufToUrlBase64(asn1.children[8].value);
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return jwk;
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} else {
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throw new Error("not an RSA PKCS#1 public or private key (wrong number of ints)");
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}
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};
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x509.parsePkcs8 = function parseRsaPkcs8(buf, asn1, jwk) {
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if (2 === asn1.children.length
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&& 0x03 === asn1.children[1].type
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&& 0x30 === asn1.children[1].value[0]) {
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asn1 = ASN1.parse(asn1.children[1].value);
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jwk.n = Enc.bufToUrlBase64(asn1.children[0].value);
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jwk.e = Enc.bufToUrlBase64(asn1.children[1].value);
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} else if (3 === asn1.children.length
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&& 0x04 === asn1.children[2].type
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&& 0x30 === asn1.children[2].children[0].type
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&& 0x02 === asn1.children[2].children[0].children[0].type) {
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asn1 = asn1.children[2].children[0];
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jwk.n = Enc.bufToUrlBase64(asn1.children[1].value);
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jwk.e = Enc.bufToUrlBase64(asn1.children[2].value);
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jwk.d = Enc.bufToUrlBase64(asn1.children[3].value);
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jwk.p = Enc.bufToUrlBase64(asn1.children[4].value);
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jwk.q = Enc.bufToUrlBase64(asn1.children[5].value);
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jwk.dp = Enc.bufToUrlBase64(asn1.children[6].value);
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jwk.dq = Enc.bufToUrlBase64(asn1.children[7].value);
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jwk.qi = Enc.bufToUrlBase64(asn1.children[8].value);
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} else {
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throw new Error("not an RSA PKCS#8 public or private key (wrong format)");
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}
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return jwk;
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};
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6
test.sh
Executable file
6
test.sh
Executable file
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@ -0,0 +1,6 @@
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#!/bin/bash
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node bin/rasha.js ./fixtures/privkey-rsa-2048.pkcs1.pem
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node bin/rasha.js ./fixtures/privkey-rsa-2048.pkcs8.pem
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node bin/rasha.js ./fixtures/pub-rsa-2048.pkcs1.pem
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node bin/rasha.js ./fixtures/pub-rsa-2048.spki.pem
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