Added export_allowed file to make repository visible in cgit

1 files changed, 631 insertions, 0 deletions

diff --git a/node_modules/sshpk/lib/formats/pkcs8.js b/node_modules/sshpk/lib/formats/pkcs8.js
new file mode 100644
index 0000000..2ca3ca7
--- /dev/null
+++ b/node_modules/sshpk/lib/formats/pkcs8.js
@@ -0,0 +1,631 @@
+// Copyright 2018 Joyent, Inc.
+
+module.exports = {
+	read: read,
+	readPkcs8: readPkcs8,
+	write: write,
+	writePkcs8: writePkcs8,
+	pkcs8ToBuffer: pkcs8ToBuffer,
+
+	readECDSACurve: readECDSACurve,
+	writeECDSACurve: writeECDSACurve
+};
+
+var assert = require('assert-plus');
+var asn1 = require('asn1');
+var Buffer = require('safer-buffer').Buffer;
+var algs = require('../algs');
+var utils = require('../utils');
+var Key = require('../key');
+var PrivateKey = require('../private-key');
+var pem = require('./pem');
+
+function read(buf, options) {
+	return (pem.read(buf, options, 'pkcs8'));
+}
+
+function write(key, options) {
+	return (pem.write(key, options, 'pkcs8'));
+}
+
+/* Helper to read in a single mpint */
+function readMPInt(der, nm) {
+	assert.strictEqual(der.peek(), asn1.Ber.Integer,
+	    nm + ' is not an Integer');
+	return (utils.mpNormalize(der.readString(asn1.Ber.Integer, true)));
+}
+
+function readPkcs8(alg, type, der) {
+	/* Private keys in pkcs#8 format have a weird extra int */
+	if (der.peek() === asn1.Ber.Integer) {
+		assert.strictEqual(type, 'private',
+		    'unexpected Integer at start of public key');
+		der.readString(asn1.Ber.Integer, true);
+	}
+
+	der.readSequence();
+	var next = der.offset + der.length;
+
+	var oid = der.readOID();
+	switch (oid) {
+	case '1.2.840.113549.1.1.1':
+		der._offset = next;
+		if (type === 'public')
+			return (readPkcs8RSAPublic(der));
+		else
+			return (readPkcs8RSAPrivate(der));
+	case '1.2.840.10040.4.1':
+		if (type === 'public')
+			return (readPkcs8DSAPublic(der));
+		else
+			return (readPkcs8DSAPrivate(der));
+	case '1.2.840.10045.2.1':
+		if (type === 'public')
+			return (readPkcs8ECDSAPublic(der));
+		else
+			return (readPkcs8ECDSAPrivate(der));
+	case '1.3.101.112':
+		if (type === 'public') {
+			return (readPkcs8EdDSAPublic(der));
+		} else {
+			return (readPkcs8EdDSAPrivate(der));
+		}
+	case '1.3.101.110':
+		if (type === 'public') {
+			return (readPkcs8X25519Public(der));
+		} else {
+			return (readPkcs8X25519Private(der));
+		}
+	default:
+		throw (new Error('Unknown key type OID ' + oid));
+	}
+}
+
+function readPkcs8RSAPublic(der) {
+	// bit string sequence
+	der.readSequence(asn1.Ber.BitString);
+	der.readByte();
+	der.readSequence();
+
+	// modulus
+	var n = readMPInt(der, 'modulus');
+	var e = readMPInt(der, 'exponent');
+
+	// now, make the key
+	var key = {
+		type: 'rsa',
+		source: der.originalInput,
+		parts: [
+			{ name: 'e', data: e },
+			{ name: 'n', data: n }
+		]
+	};
+
+	return (new Key(key));
+}
+
+function readPkcs8RSAPrivate(der) {
+	der.readSequence(asn1.Ber.OctetString);
+	der.readSequence();
+
+	var ver = readMPInt(der, 'version');
+	assert.equal(ver[0], 0x0, 'unknown RSA private key version');
+
+	// modulus then public exponent
+	var n = readMPInt(der, 'modulus');
+	var e = readMPInt(der, 'public exponent');
+	var d = readMPInt(der, 'private exponent');
+	var p = readMPInt(der, 'prime1');
+	var q = readMPInt(der, 'prime2');
+	var dmodp = readMPInt(der, 'exponent1');
+	var dmodq = readMPInt(der, 'exponent2');
+	var iqmp = readMPInt(der, 'iqmp');
+
+	// now, make the key
+	var key = {
+		type: 'rsa',
+		parts: [
+			{ name: 'n', data: n },
+			{ name: 'e', data: e },
+			{ name: 'd', data: d },
+			{ name: 'iqmp', data: iqmp },
+			{ name: 'p', data: p },
+			{ name: 'q', data: q },
+			{ name: 'dmodp', data: dmodp },
+			{ name: 'dmodq', data: dmodq }
+		]
+	};
+
+	return (new PrivateKey(key));
+}
+
+function readPkcs8DSAPublic(der) {
+	der.readSequence();
+
+	var p = readMPInt(der, 'p');
+	var q = readMPInt(der, 'q');
+	var g = readMPInt(der, 'g');
+
+	// bit string sequence
+	der.readSequence(asn1.Ber.BitString);
+	der.readByte();
+
+	var y = readMPInt(der, 'y');
+
+	// now, make the key
+	var key = {
+		type: 'dsa',
+		parts: [
+			{ name: 'p', data: p },
+			{ name: 'q', data: q },
+			{ name: 'g', data: g },
+			{ name: 'y', data: y }
+		]
+	};
+
+	return (new Key(key));
+}
+
+function readPkcs8DSAPrivate(der) {
+	der.readSequence();
+
+	var p = readMPInt(der, 'p');
+	var q = readMPInt(der, 'q');
+	var g = readMPInt(der, 'g');
+
+	der.readSequence(asn1.Ber.OctetString);
+	var x = readMPInt(der, 'x');
+
+	/* The pkcs#8 format does not include the public key */
+	var y = utils.calculateDSAPublic(g, p, x);
+
+	var key = {
+		type: 'dsa',
+		parts: [
+			{ name: 'p', data: p },
+			{ name: 'q', data: q },
+			{ name: 'g', data: g },
+			{ name: 'y', data: y },
+			{ name: 'x', data: x }
+		]
+	};
+
+	return (new PrivateKey(key));
+}
+
+function readECDSACurve(der) {
+	var curveName, curveNames;
+	var j, c, cd;
+
+	if (der.peek() === asn1.Ber.OID) {
+		var oid = der.readOID();
+
+		curveNames = Object.keys(algs.curves);
+		for (j = 0; j < curveNames.length; ++j) {
+			c = curveNames[j];
+			cd = algs.curves[c];
+			if (cd.pkcs8oid === oid) {
+				curveName = c;
+				break;
+			}
+		}
+
+	} else {
+		// ECParameters sequence
+		der.readSequence();
+		var version = der.readString(asn1.Ber.Integer, true);
+		assert.strictEqual(version[0], 1, 'ECDSA key not version 1');
+
+		var curve = {};
+
+		// FieldID sequence
+		der.readSequence();
+		var fieldTypeOid = der.readOID();
+		assert.strictEqual(fieldTypeOid, '1.2.840.10045.1.1',
+		    'ECDSA key is not from a prime-field');
+		var p = curve.p = utils.mpNormalize(
+		    der.readString(asn1.Ber.Integer, true));
+		/*
+		 * p always starts with a 1 bit, so count the zeros to get its
+		 * real size.
+		 */
+		curve.size = p.length * 8 - utils.countZeros(p);
+
+		// Curve sequence
+		der.readSequence();
+		curve.a = utils.mpNormalize(
+		    der.readString(asn1.Ber.OctetString, true));
+		curve.b = utils.mpNormalize(
+		    der.readString(asn1.Ber.OctetString, true));
+		if (der.peek() === asn1.Ber.BitString)
+			curve.s = der.readString(asn1.Ber.BitString, true);
+
+		// Combined Gx and Gy
+		curve.G = der.readString(asn1.Ber.OctetString, true);
+		assert.strictEqual(curve.G[0], 0x4,
+		    'uncompressed G is required');
+
+		curve.n = utils.mpNormalize(
+		    der.readString(asn1.Ber.Integer, true));
+		curve.h = utils.mpNormalize(
+		    der.readString(asn1.Ber.Integer, true));
+		assert.strictEqual(curve.h[0], 0x1, 'a cofactor=1 curve is ' +
+		    'required');
+
+		curveNames = Object.keys(algs.curves);
+		var ks = Object.keys(curve);
+		for (j = 0; j < curveNames.length; ++j) {
+			c = curveNames[j];
+			cd = algs.curves[c];
+			var equal = true;
+			for (var i = 0; i < ks.length; ++i) {
+				var k = ks[i];
+				if (cd[k] === undefined)
+					continue;
+				if (typeof (cd[k]) === 'object' &&
+				    cd[k].equals !== undefined) {
+					if (!cd[k].equals(curve[k])) {
+						equal = false;
+						break;
+					}
+				} else if (Buffer.isBuffer(cd[k])) {
+					if (cd[k].toString('binary')
+					    !== curve[k].toString('binary')) {
+						equal = false;
+						break;
+					}
+				} else {
+					if (cd[k] !== curve[k]) {
+						equal = false;
+						break;
+					}
+				}
+			}
+			if (equal) {
+				curveName = c;
+				break;
+			}
+		}
+	}
+	return (curveName);
+}
+
+function readPkcs8ECDSAPrivate(der) {
+	var curveName = readECDSACurve(der);
+	assert.string(curveName, 'a known elliptic curve');
+
+	der.readSequence(asn1.Ber.OctetString);
+	der.readSequence();
+
+	var version = readMPInt(der, 'version');
+	assert.equal(version[0], 1, 'unknown version of ECDSA key');
+
+	var d = der.readString(asn1.Ber.OctetString, true);
+	var Q;
+
+	if (der.peek() == 0xa0) {
+		der.readSequence(0xa0);
+		der._offset += der.length;
+	}
+	if (der.peek() == 0xa1) {
+		der.readSequence(0xa1);
+		Q = der.readString(asn1.Ber.BitString, true);
+		Q = utils.ecNormalize(Q);
+	}
+
+	if (Q === undefined) {
+		var pub = utils.publicFromPrivateECDSA(curveName, d);
+		Q = pub.part.Q.data;
+	}
+
+	var key = {
+		type: 'ecdsa',
+		parts: [
+			{ name: 'curve', data: Buffer.from(curveName) },
+			{ name: 'Q', data: Q },
+			{ name: 'd', data: d }
+		]
+	};
+
+	return (new PrivateKey(key));
+}
+
+function readPkcs8ECDSAPublic(der) {
+	var curveName = readECDSACurve(der);
+	assert.string(curveName, 'a known elliptic curve');
+
+	var Q = der.readString(asn1.Ber.BitString, true);
+	Q = utils.ecNormalize(Q);
+
+	var key = {
+		type: 'ecdsa',
+		parts: [
+			{ name: 'curve', data: Buffer.from(curveName) },
+			{ name: 'Q', data: Q }
+		]
+	};
+
+	return (new Key(key));
+}
+
+function readPkcs8EdDSAPublic(der) {
+	if (der.peek() === 0x00)
+		der.readByte();
+
+	var A = utils.readBitString(der);
+
+	var key = {
+		type: 'ed25519',
+		parts: [
+			{ name: 'A', data: utils.zeroPadToLength(A, 32) }
+		]
+	};
+
+	return (new Key(key));
+}
+
+function readPkcs8X25519Public(der) {
+	var A = utils.readBitString(der);
+
+	var key = {
+		type: 'curve25519',
+		parts: [
+			{ name: 'A', data: utils.zeroPadToLength(A, 32) }
+		]
+	};
+
+	return (new Key(key));
+}
+
+function readPkcs8EdDSAPrivate(der) {
+	if (der.peek() === 0x00)
+		der.readByte();
+
+	der.readSequence(asn1.Ber.OctetString);
+	var k = der.readString(asn1.Ber.OctetString, true);
+	k = utils.zeroPadToLength(k, 32);
+
+	var A;
+	if (der.peek() === asn1.Ber.BitString) {
+		A = utils.readBitString(der);
+		A = utils.zeroPadToLength(A, 32);
+	} else {
+		A = utils.calculateED25519Public(k);
+	}
+
+	var key = {
+		type: 'ed25519',
+		parts: [
+			{ name: 'A', data: utils.zeroPadToLength(A, 32) },
+			{ name: 'k', data: utils.zeroPadToLength(k, 32) }
+		]
+	};
+
+	return (new PrivateKey(key));
+}
+
+function readPkcs8X25519Private(der) {
+	if (der.peek() === 0x00)
+		der.readByte();
+
+	der.readSequence(asn1.Ber.OctetString);
+	var k = der.readString(asn1.Ber.OctetString, true);
+	k = utils.zeroPadToLength(k, 32);
+
+	var A = utils.calculateX25519Public(k);
+
+	var key = {
+		type: 'curve25519',
+		parts: [
+			{ name: 'A', data: utils.zeroPadToLength(A, 32) },
+			{ name: 'k', data: utils.zeroPadToLength(k, 32) }
+		]
+	};
+
+	return (new PrivateKey(key));
+}
+
+function pkcs8ToBuffer(key) {
+	var der = new asn1.BerWriter();
+	writePkcs8(der, key);
+	return (der.buffer);
+}
+
+function writePkcs8(der, key) {
+	der.startSequence();
+
+	if (PrivateKey.isPrivateKey(key)) {
+		var sillyInt = Buffer.from([0]);
+		der.writeBuffer(sillyInt, asn1.Ber.Integer);
+	}
+
+	der.startSequence();
+	switch (key.type) {
+	case 'rsa':
+		der.writeOID('1.2.840.113549.1.1.1');
+		if (PrivateKey.isPrivateKey(key))
+			writePkcs8RSAPrivate(key, der);
+		else
+			writePkcs8RSAPublic(key, der);
+		break;
+	case 'dsa':
+		der.writeOID('1.2.840.10040.4.1');
+		if (PrivateKey.isPrivateKey(key))
+			writePkcs8DSAPrivate(key, der);
+		else
+			writePkcs8DSAPublic(key, der);
+		break;
+	case 'ecdsa':
+		der.writeOID('1.2.840.10045.2.1');
+		if (PrivateKey.isPrivateKey(key))
+			writePkcs8ECDSAPrivate(key, der);
+		else
+			writePkcs8ECDSAPublic(key, der);
+		break;
+	case 'ed25519':
+		der.writeOID('1.3.101.112');
+		if (PrivateKey.isPrivateKey(key))
+			throw (new Error('Ed25519 private keys in pkcs8 ' +
+			    'format are not supported'));
+		writePkcs8EdDSAPublic(key, der);
+		break;
+	default:
+		throw (new Error('Unsupported key type: ' + key.type));
+	}
+
+	der.endSequence();
+}
+
+function writePkcs8RSAPrivate(key, der) {
+	der.writeNull();
+	der.endSequence();
+
+	der.startSequence(asn1.Ber.OctetString);
+	der.startSequence();
+
+	var version = Buffer.from([0]);
+	der.writeBuffer(version, asn1.Ber.Integer);
+
+	der.writeBuffer(key.part.n.data, asn1.Ber.Integer);
+	der.writeBuffer(key.part.e.data, asn1.Ber.Integer);
+	der.writeBuffer(key.part.d.data, asn1.Ber.Integer);
+	der.writeBuffer(key.part.p.data, asn1.Ber.Integer);
+	der.writeBuffer(key.part.q.data, asn1.Ber.Integer);
+	if (!key.part.dmodp || !key.part.dmodq)
+		utils.addRSAMissing(key);
+	der.writeBuffer(key.part.dmodp.data, asn1.Ber.Integer);
+	der.writeBuffer(key.part.dmodq.data, asn1.Ber.Integer);
+	der.writeBuffer(key.part.iqmp.data, asn1.Ber.Integer);
+
+	der.endSequence();
+	der.endSequence();
+}
+
+function writePkcs8RSAPublic(key, der) {
+	der.writeNull();
+	der.endSequence();
+
+	der.startSequence(asn1.Ber.BitString);
+	der.writeByte(0x00);
+
+	der.startSequence();
+	der.writeBuffer(key.part.n.data, asn1.Ber.Integer);
+	der.writeBuffer(key.part.e.data, asn1.Ber.Integer);
+	der.endSequence();
+
+	der.endSequence();
+}
+
+function writePkcs8DSAPrivate(key, der) {
+	der.startSequence();
+	der.writeBuffer(key.part.p.data, asn1.Ber.Integer);
+	der.writeBuffer(key.part.q.data, asn1.Ber.Integer);
+	der.writeBuffer(key.part.g.data, asn1.Ber.Integer);
+	der.endSequence();
+
+	der.endSequence();
+
+	der.startSequence(asn1.Ber.OctetString);
+	der.writeBuffer(key.part.x.data, asn1.Ber.Integer);
+	der.endSequence();
+}
+
+function writePkcs8DSAPublic(key, der) {
+	der.startSequence();
+	der.writeBuffer(key.part.p.data, asn1.Ber.Integer);
+	der.writeBuffer(key.part.q.data, asn1.Ber.Integer);
+	der.writeBuffer(key.part.g.data, asn1.Ber.Integer);
+	der.endSequence();
+	der.endSequence();
+
+	der.startSequence(asn1.Ber.BitString);
+	der.writeByte(0x00);
+	der.writeBuffer(key.part.y.data, asn1.Ber.Integer);
+	der.endSequence();
+}
+
+function writeECDSACurve(key, der) {
+	var curve = algs.curves[key.curve];
+	if (curve.pkcs8oid) {
+		/* This one has a name in pkcs#8, so just write the oid */
+		der.writeOID(curve.pkcs8oid);
+
+	} else {
+		// ECParameters sequence
+		der.startSequence();
+
+		var version = Buffer.from([1]);
+		der.writeBuffer(version, asn1.Ber.Integer);
+
+		// FieldID sequence
+		der.startSequence();
+		der.writeOID('1.2.840.10045.1.1'); // prime-field
+		der.writeBuffer(curve.p, asn1.Ber.Integer);
+		der.endSequence();
+
+		// Curve sequence
+		der.startSequence();
+		var a = curve.p;
+		if (a[0] === 0x0)
+			a = a.slice(1);
+		der.writeBuffer(a, asn1.Ber.OctetString);
+		der.writeBuffer(curve.b, asn1.Ber.OctetString);
+		der.writeBuffer(curve.s, asn1.Ber.BitString);
+		der.endSequence();
+
+		der.writeBuffer(curve.G, asn1.Ber.OctetString);
+		der.writeBuffer(curve.n, asn1.Ber.Integer);
+		var h = curve.h;
+		if (!h) {
+			h = Buffer.from([1]);
+		}
+		der.writeBuffer(h, asn1.Ber.Integer);
+
+		// ECParameters
+		der.endSequence();
+	}
+}
+
+function writePkcs8ECDSAPublic(key, der) {
+	writeECDSACurve(key, der);
+	der.endSequence();
+
+	var Q = utils.ecNormalize(key.part.Q.data, true);
+	der.writeBuffer(Q, asn1.Ber.BitString);
+}
+
+function writePkcs8ECDSAPrivate(key, der) {
+	writeECDSACurve(key, der);
+	der.endSequence();
+
+	der.startSequence(asn1.Ber.OctetString);
+	der.startSequence();
+
+	var version = Buffer.from([1]);
+	der.writeBuffer(version, asn1.Ber.Integer);
+
+	der.writeBuffer(key.part.d.data, asn1.Ber.OctetString);
+
+	der.startSequence(0xa1);
+	var Q = utils.ecNormalize(key.part.Q.data, true);
+	der.writeBuffer(Q, asn1.Ber.BitString);
+	der.endSequence();
+
+	der.endSequence();
+	der.endSequence();
+}
+
+function writePkcs8EdDSAPublic(key, der) {
+	der.endSequence();
+
+	utils.writeBitString(der, key.part.A.data);
+}
+
+function writePkcs8EdDSAPrivate(key, der) {
+	der.endSequence();
+
+	var k = utils.mpNormalize(key.part.k.data, true);
+	der.startSequence(asn1.Ber.OctetString);
+	der.writeBuffer(k, asn1.Ber.OctetString);
+	der.endSequence();
+}