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373 lines
8.8 KiB
373 lines
8.8 KiB
// Copyright 2015 Joyent, Inc. |
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module.exports = { |
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read: read, |
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readPkcs1: readPkcs1, |
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write: write, |
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writePkcs1: writePkcs1 |
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}; |
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var assert = require('assert-plus'); |
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var asn1 = require('asn1'); |
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var Buffer = require('safer-buffer').Buffer; |
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var algs = require('../algs'); |
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var utils = require('../utils'); |
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var Key = require('../key'); |
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var PrivateKey = require('../private-key'); |
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var pem = require('./pem'); |
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var pkcs8 = require('./pkcs8'); |
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var readECDSACurve = pkcs8.readECDSACurve; |
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function read(buf, options) { |
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return (pem.read(buf, options, 'pkcs1')); |
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} |
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function write(key, options) { |
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return (pem.write(key, options, 'pkcs1')); |
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} |
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/* Helper to read in a single mpint */ |
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function readMPInt(der, nm) { |
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assert.strictEqual(der.peek(), asn1.Ber.Integer, |
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nm + ' is not an Integer'); |
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return (utils.mpNormalize(der.readString(asn1.Ber.Integer, true))); |
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} |
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function readPkcs1(alg, type, der) { |
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switch (alg) { |
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case 'RSA': |
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if (type === 'public') |
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return (readPkcs1RSAPublic(der)); |
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else if (type === 'private') |
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return (readPkcs1RSAPrivate(der)); |
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throw (new Error('Unknown key type: ' + type)); |
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case 'DSA': |
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if (type === 'public') |
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return (readPkcs1DSAPublic(der)); |
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else if (type === 'private') |
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return (readPkcs1DSAPrivate(der)); |
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throw (new Error('Unknown key type: ' + type)); |
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case 'EC': |
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case 'ECDSA': |
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if (type === 'private') |
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return (readPkcs1ECDSAPrivate(der)); |
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else if (type === 'public') |
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return (readPkcs1ECDSAPublic(der)); |
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throw (new Error('Unknown key type: ' + type)); |
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case 'EDDSA': |
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case 'EdDSA': |
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if (type === 'private') |
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return (readPkcs1EdDSAPrivate(der)); |
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throw (new Error(type + ' keys not supported with EdDSA')); |
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default: |
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throw (new Error('Unknown key algo: ' + alg)); |
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} |
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} |
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function readPkcs1RSAPublic(der) { |
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// modulus and exponent |
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var n = readMPInt(der, 'modulus'); |
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var e = readMPInt(der, 'exponent'); |
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// now, make the key |
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var key = { |
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type: 'rsa', |
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parts: [ |
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{ name: 'e', data: e }, |
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{ name: 'n', data: n } |
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] |
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}; |
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return (new Key(key)); |
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} |
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function readPkcs1RSAPrivate(der) { |
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var version = readMPInt(der, 'version'); |
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assert.strictEqual(version[0], 0); |
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// modulus then public exponent |
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var n = readMPInt(der, 'modulus'); |
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var e = readMPInt(der, 'public exponent'); |
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var d = readMPInt(der, 'private exponent'); |
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var p = readMPInt(der, 'prime1'); |
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var q = readMPInt(der, 'prime2'); |
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var dmodp = readMPInt(der, 'exponent1'); |
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var dmodq = readMPInt(der, 'exponent2'); |
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var iqmp = readMPInt(der, 'iqmp'); |
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// now, make the key |
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var key = { |
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type: 'rsa', |
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parts: [ |
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{ name: 'n', data: n }, |
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{ name: 'e', data: e }, |
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{ name: 'd', data: d }, |
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{ name: 'iqmp', data: iqmp }, |
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{ name: 'p', data: p }, |
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{ name: 'q', data: q }, |
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{ name: 'dmodp', data: dmodp }, |
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{ name: 'dmodq', data: dmodq } |
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] |
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}; |
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return (new PrivateKey(key)); |
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} |
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function readPkcs1DSAPrivate(der) { |
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var version = readMPInt(der, 'version'); |
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assert.strictEqual(version.readUInt8(0), 0); |
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var p = readMPInt(der, 'p'); |
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var q = readMPInt(der, 'q'); |
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var g = readMPInt(der, 'g'); |
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var y = readMPInt(der, 'y'); |
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var x = readMPInt(der, 'x'); |
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// now, make the key |
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var key = { |
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type: 'dsa', |
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parts: [ |
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{ name: 'p', data: p }, |
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{ name: 'q', data: q }, |
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{ name: 'g', data: g }, |
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{ name: 'y', data: y }, |
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{ name: 'x', data: x } |
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] |
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}; |
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return (new PrivateKey(key)); |
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} |
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function readPkcs1EdDSAPrivate(der) { |
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var version = readMPInt(der, 'version'); |
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assert.strictEqual(version.readUInt8(0), 1); |
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// private key |
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var k = der.readString(asn1.Ber.OctetString, true); |
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der.readSequence(0xa0); |
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var oid = der.readOID(); |
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assert.strictEqual(oid, '1.3.101.112', 'the ed25519 curve identifier'); |
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der.readSequence(0xa1); |
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var A = utils.readBitString(der); |
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var key = { |
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type: 'ed25519', |
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parts: [ |
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{ name: 'A', data: utils.zeroPadToLength(A, 32) }, |
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{ name: 'k', data: k } |
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] |
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}; |
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return (new PrivateKey(key)); |
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} |
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function readPkcs1DSAPublic(der) { |
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var y = readMPInt(der, 'y'); |
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var p = readMPInt(der, 'p'); |
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var q = readMPInt(der, 'q'); |
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var g = readMPInt(der, 'g'); |
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var key = { |
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type: 'dsa', |
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parts: [ |
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{ name: 'y', data: y }, |
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{ name: 'p', data: p }, |
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{ name: 'q', data: q }, |
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{ name: 'g', data: g } |
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] |
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}; |
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return (new Key(key)); |
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} |
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function readPkcs1ECDSAPublic(der) { |
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der.readSequence(); |
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var oid = der.readOID(); |
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assert.strictEqual(oid, '1.2.840.10045.2.1', 'must be ecPublicKey'); |
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var curveOid = der.readOID(); |
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var curve; |
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var curves = Object.keys(algs.curves); |
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for (var j = 0; j < curves.length; ++j) { |
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var c = curves[j]; |
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var cd = algs.curves[c]; |
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if (cd.pkcs8oid === curveOid) { |
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curve = c; |
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break; |
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} |
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} |
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assert.string(curve, 'a known ECDSA named curve'); |
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var Q = der.readString(asn1.Ber.BitString, true); |
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Q = utils.ecNormalize(Q); |
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var key = { |
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type: 'ecdsa', |
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parts: [ |
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{ name: 'curve', data: Buffer.from(curve) }, |
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{ name: 'Q', data: Q } |
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] |
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}; |
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return (new Key(key)); |
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} |
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function readPkcs1ECDSAPrivate(der) { |
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var version = readMPInt(der, 'version'); |
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assert.strictEqual(version.readUInt8(0), 1); |
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// private key |
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var d = der.readString(asn1.Ber.OctetString, true); |
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der.readSequence(0xa0); |
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var curve = readECDSACurve(der); |
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assert.string(curve, 'a known elliptic curve'); |
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der.readSequence(0xa1); |
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var Q = der.readString(asn1.Ber.BitString, true); |
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Q = utils.ecNormalize(Q); |
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var key = { |
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type: 'ecdsa', |
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parts: [ |
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{ name: 'curve', data: Buffer.from(curve) }, |
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{ name: 'Q', data: Q }, |
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{ name: 'd', data: d } |
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] |
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}; |
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return (new PrivateKey(key)); |
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} |
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function writePkcs1(der, key) { |
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der.startSequence(); |
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switch (key.type) { |
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case 'rsa': |
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if (PrivateKey.isPrivateKey(key)) |
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writePkcs1RSAPrivate(der, key); |
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else |
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writePkcs1RSAPublic(der, key); |
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break; |
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case 'dsa': |
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if (PrivateKey.isPrivateKey(key)) |
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writePkcs1DSAPrivate(der, key); |
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else |
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writePkcs1DSAPublic(der, key); |
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break; |
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case 'ecdsa': |
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if (PrivateKey.isPrivateKey(key)) |
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writePkcs1ECDSAPrivate(der, key); |
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else |
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writePkcs1ECDSAPublic(der, key); |
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break; |
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case 'ed25519': |
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if (PrivateKey.isPrivateKey(key)) |
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writePkcs1EdDSAPrivate(der, key); |
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else |
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writePkcs1EdDSAPublic(der, key); |
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break; |
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default: |
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throw (new Error('Unknown key algo: ' + key.type)); |
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} |
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der.endSequence(); |
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} |
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function writePkcs1RSAPublic(der, key) { |
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der.writeBuffer(key.part.n.data, asn1.Ber.Integer); |
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der.writeBuffer(key.part.e.data, asn1.Ber.Integer); |
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} |
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function writePkcs1RSAPrivate(der, key) { |
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var ver = Buffer.from([0]); |
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der.writeBuffer(ver, asn1.Ber.Integer); |
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der.writeBuffer(key.part.n.data, asn1.Ber.Integer); |
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der.writeBuffer(key.part.e.data, asn1.Ber.Integer); |
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der.writeBuffer(key.part.d.data, asn1.Ber.Integer); |
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der.writeBuffer(key.part.p.data, asn1.Ber.Integer); |
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der.writeBuffer(key.part.q.data, asn1.Ber.Integer); |
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if (!key.part.dmodp || !key.part.dmodq) |
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utils.addRSAMissing(key); |
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der.writeBuffer(key.part.dmodp.data, asn1.Ber.Integer); |
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der.writeBuffer(key.part.dmodq.data, asn1.Ber.Integer); |
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der.writeBuffer(key.part.iqmp.data, asn1.Ber.Integer); |
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} |
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function writePkcs1DSAPrivate(der, key) { |
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var ver = Buffer.from([0]); |
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der.writeBuffer(ver, asn1.Ber.Integer); |
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der.writeBuffer(key.part.p.data, asn1.Ber.Integer); |
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der.writeBuffer(key.part.q.data, asn1.Ber.Integer); |
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der.writeBuffer(key.part.g.data, asn1.Ber.Integer); |
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der.writeBuffer(key.part.y.data, asn1.Ber.Integer); |
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der.writeBuffer(key.part.x.data, asn1.Ber.Integer); |
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} |
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function writePkcs1DSAPublic(der, key) { |
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der.writeBuffer(key.part.y.data, asn1.Ber.Integer); |
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der.writeBuffer(key.part.p.data, asn1.Ber.Integer); |
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der.writeBuffer(key.part.q.data, asn1.Ber.Integer); |
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der.writeBuffer(key.part.g.data, asn1.Ber.Integer); |
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} |
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function writePkcs1ECDSAPublic(der, key) { |
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der.startSequence(); |
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der.writeOID('1.2.840.10045.2.1'); /* ecPublicKey */ |
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var curve = key.part.curve.data.toString(); |
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var curveOid = algs.curves[curve].pkcs8oid; |
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assert.string(curveOid, 'a known ECDSA named curve'); |
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der.writeOID(curveOid); |
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der.endSequence(); |
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var Q = utils.ecNormalize(key.part.Q.data, true); |
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der.writeBuffer(Q, asn1.Ber.BitString); |
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} |
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function writePkcs1ECDSAPrivate(der, key) { |
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var ver = Buffer.from([1]); |
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der.writeBuffer(ver, asn1.Ber.Integer); |
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der.writeBuffer(key.part.d.data, asn1.Ber.OctetString); |
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der.startSequence(0xa0); |
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var curve = key.part.curve.data.toString(); |
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var curveOid = algs.curves[curve].pkcs8oid; |
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assert.string(curveOid, 'a known ECDSA named curve'); |
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der.writeOID(curveOid); |
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der.endSequence(); |
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der.startSequence(0xa1); |
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var Q = utils.ecNormalize(key.part.Q.data, true); |
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der.writeBuffer(Q, asn1.Ber.BitString); |
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der.endSequence(); |
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} |
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function writePkcs1EdDSAPrivate(der, key) { |
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var ver = Buffer.from([1]); |
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der.writeBuffer(ver, asn1.Ber.Integer); |
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der.writeBuffer(key.part.k.data, asn1.Ber.OctetString); |
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der.startSequence(0xa0); |
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der.writeOID('1.3.101.112'); |
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der.endSequence(); |
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der.startSequence(0xa1); |
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utils.writeBitString(der, key.part.A.data); |
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der.endSequence(); |
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} |
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function writePkcs1EdDSAPublic(der, key) { |
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throw (new Error('Public keys are not supported for EdDSA PKCS#1')); |
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}
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