v1.1.1: code layout and organization
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								lib/ecdsacsr.js
									
									
									
									
									
								
							@ -6,251 +6,26 @@ var crypto = require('crypto');
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// prime256v1 (ANSI X9.62 named elliptic curve)
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var OBJ_ID_EC  = '06 08 2A8648CE3D030107'.replace(/\s+/g, '').toLowerCase();
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var ECDSACSR = {};
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var ECDSA = {};
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var DER = {};
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var PEM = {};
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var ASN1;
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var Hex = {};
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var AB = {};
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//
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// A dumbed-down, minimal ASN.1 packer
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// CSR - the main event
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//
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// Almost every ASN.1 type that's important for CSR
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// can be represented generically with only a few rules.
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function ASN1(/*type, hexstrings...*/) {
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  var args = Array.prototype.slice.call(arguments);
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  var typ = args.shift();
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  var str = args.join('').replace(/\s+/g, '').toLowerCase();
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  var len = (str.length/2);
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  var lenlen = 0;
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  var hex = typ;
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  // We can't have an odd number of hex chars
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  if (len !== Math.round(len)) {
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    throw new Error("invalid hex");
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  }
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  // The first byte of any ASN.1 sequence is the type (Sequence, Integer, etc)
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  // The second byte is either the size of the value, or the size of its size
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  // 1. If the second byte is < 0x80 (128) it is considered the size
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  // 2. If it is > 0x80 then it describes the number of bytes of the size
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  //    ex: 0x82 means the next 2 bytes describe the size of the value
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  // 3. The special case of exactly 0x80 is "indefinite" length (to end-of-file)
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  if (len > 127) {
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    lenlen += 1;
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    while (len > 255) {
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      lenlen += 1;
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      len = len >> 8;
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    }
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  }
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  if (lenlen) { hex += numToHex(0x80 + lenlen); }
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  return hex + numToHex(str.length/2) + str;
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}
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// The Integer type has some special rules
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ASN1.UInt = function UINT() {
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  var str = Array.prototype.slice.call(arguments).join('');
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  var first = parseInt(str.slice(0, 2), 16);
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  // If the first byte is 0x80 or greater, the number is considered negative
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  // Therefore we add a '00' prefix if the 0x80 bit is set
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  if (0x80 & first) { str = '00' + str; }
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  return ASN1('02', str);
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ECDSACSR.create = function createEcCsr(keypem, domains) {
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  var pemblock = PEM.parseBlock(keypem);
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  var ecpub = PEM.parseEcPubkey(pemblock.der);
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  var request = ECDSACSR.request(ecpub, domains);
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  return AB.fromHex(ECDSACSR.sign(keypem, request));
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};
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// The Bit String type also has a special rule
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ASN1.BitStr = function BITSTR() {
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  var str = Array.prototype.slice.call(arguments).join('');
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  // '00' is a mask of how many bits of the next byte to ignore
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  return ASN1('03', '00' + str);
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};
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function fromBase64(b64) {
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  var buf;
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  var ab;
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  if ('undefined' === typeof atob) {
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    buf = Buffer.from(b64, 'base64');
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    return buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.byteLength);
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  }
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  buf = atob(b64);
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  ab = new ArrayBuffer(buf.length);
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  ab = new Uint8Array(ab);
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  buf.split('').forEach(function (ch, i) {
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    ab[i] = ch.charCodeAt(0);
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  });
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  return ab.buffer;
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}
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function parsePem(pem) {
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  var typ;
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  var pub;
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  var crv;
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  var der = fromBase64(pem.split(/\n/).filter(function (line, i) {
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    if (0 === i) {
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      if (/ PUBLIC /.test(line)) {
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        pub = true;
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      } else if (/ PRIVATE /.test(line)) {
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        pub = false;
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      }
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      if (/ EC/.test(line)) {
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        typ = 'EC';
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      }
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    }
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    return !/---/.test(line);
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  }).join(''));
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  if (!typ || 'EC' === typ) {
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    var hex = toHex(der).toLowerCase();
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    if (-1 !== hex.indexOf(OBJ_ID_EC)) {
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      typ = 'EC';
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      crv = 'P-256';
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    } else {
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      // TODO more than just P-256
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      console.warn("unsupported ec curve");
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    }
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  }
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  return { typ: typ, pub: pub, der: der, crv: crv };
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}
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function toHex(ab) {
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  var hex = [];
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  var u8 = new Uint8Array(ab);
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  var size = u8.byteLength;
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  var i;
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  var h;
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  for (i = 0; i < size; i += 1) {
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    h = u8[i].toString(16);
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    if (2 === h.length) {
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      hex.push(h);
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    } else {
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      hex.push('0' + h);
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    }
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  }
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  return hex.join('');
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}
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function fromHex(hex) {
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  if ('undefined' !== typeof Buffer) {
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    return Buffer.from(hex, 'hex');
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  }
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  var ab = new ArrayBuffer(hex.length/2);
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  var i;
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  var j;
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  ab = new Uint8Array(ab);
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  for (i = 0, j = 0; i < (hex.length/2); i += 1) {
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    ab[i] = parseInt(hex.slice(j, j+1), 16);
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    j += 2;
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  }
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  return ab.buffer;
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}
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function readEcPubkey(der) {
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  // the key is the last 520 bits of both the private key and the public key
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  // he 3 bits prior identify the key as
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  var x, y;
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  var compressed;
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  var keylen = 32;
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  var offset = 64;
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  var headerSize = 4;
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  var header = toHex(der.slice(der.byteLength - (offset + headerSize), der.byteLength - offset));
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  if ('03420004' !== header) {
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    offset = 32;
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    header = toHex(der.slice(der.byteLength - (offset + headerSize), der.byteLength - offset));
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    if ('03420002' !== header) {
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      throw new Error("not a valid EC P-256 key (expected 0x0342004 or 0x0342002 as pub key preamble, but found " + header + ")");
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    }
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  }
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  // The one good thing that came from the b***kchain hysteria: good EC documentation
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  // https://davidederosa.com/basic-blockchain-programming/elliptic-curve-keys/
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  compressed = ('2' === header[header.byteLength -1]);
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  x = der.slice(der.byteLength - offset, (der.byteLength - offset) + keylen);
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  if (!compressed) {
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    y = der.slice(der.byteLength - keylen, der.byteLength);
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  }
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  return {
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    x: x
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  , y: y || null
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  };
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}
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function formatAsPem(str) {
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  var finalString = '';
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  while (str.length > 0) {
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      finalString += str.substring(0, 64) + '\n';
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      str = str.substring(64);
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  }
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  return finalString;
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}
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function toBase64(der) {
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  if ('undefined' === typeof btoa) {
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    return Buffer.from(der).toString('base64');
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  }
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	var chs = [];
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	der.forEach(function (b) {
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		chs.push(String.fromCharCode(b));
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	});
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  return btoa(chs.join(''));
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}
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function csrEcSig(r, s) {
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  return [
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    ASN1('30'
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      // 1.2.840.10045.4.3.2 ecdsaWithSHA256
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      // (ANSI X9.62 ECDSA algorithm with SHA256)
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    , ASN1('06', '2A 86 48 CE 3D 04 03 02')
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    )
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  , ASN1.BitStr(
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      ASN1('30'
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      , ASN1.UInt(toHex(r))
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      , ASN1.UInt(toHex(s))
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      )
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    )
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  ].join('');
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}
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function strToHex(str) {
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  var escstr = encodeURIComponent(str);
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  // replaces any uri escape sequence, such as %0A,
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  // with binary escape, such as 0x0A
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  var binstr = escstr.replace(/%([0-9A-F]{2})/g, function(match, p1) {
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    return String.fromCharCode('0x' + p1);
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  });
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  return binstr.split('').map(function (b) {
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    var h = b.charCodeAt(0).toString(16);
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    if (2 === h.length) { return h; }
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    return '0' + h;
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  }).join('');
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}
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function numToHex(d) {
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  d = d.toString(16);
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  if (d.length % 2) {
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    return '0' + d;
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  }
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  return d;
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}
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function fromHex(hex) {
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  if ('undefined' !== typeof Buffer) {
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    return Buffer.from(hex, 'hex');
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  }
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  var ab = new ArrayBuffer(hex.length/2);
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  var i;
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  var j;
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  ab = new Uint8Array(ab);
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  for (i = 0, j = 0; i < (hex.length/2); i += 1) {
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    ab[i] = parseInt(hex.slice(j, j+1), 16);
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    j += 2;
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  }
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  return ab.buffer;
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}
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function createCsrBodyEc(domains, xy) {
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ECDSACSR.request = function createCsrBodyEc(xy, domains) {
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  var publen = xy.x.byteLength;
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  var compression = '04';
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  var hxy = '';
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@ -265,64 +40,89 @@ function createCsrBodyEc(domains, xy) {
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    // I haven't learned yet, and I'm not sure if it's allowed at all
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    compression = '02';
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  }
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  hxy += toHex(xy.x);
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  if (xy.y) {
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    hxy += toHex(xy.y);
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  }
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  hxy += Hex.fromAB(xy.x);
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  if (xy.y) { hxy += Hex.fromAB(xy.y); }
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  var version = ASN1.UInt('00');
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  var subject = ASN1('30'
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    , ASN1('31'
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      , ASN1('30'
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          // object id (commonName)
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        , ASN1('06', '55 04 03')
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        , ASN1('0C', strToHex(domains[0])))));
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  var pubkey = ASN1('30'
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  // Sorry for the mess, but it is what it is
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  return ASN1('30'
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      // Version (0)
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    , ASN1.UInt('00')
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      // CN / Subject
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    , ASN1('30'
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        // 1.2.840.10045.2.1 ecPublicKey
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        // (ANSI X9.62 public key type)
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      , ASN1('06', '2A 86 48 CE 3D 02 01')
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        // 1.2.840.10045.3.1.7 prime256v1
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        // (ANSI X9.62 named elliptic curve)
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      , ASN1('06', '2A 86 48 CE 3D 03 01 07')
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      )
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    , ASN1.BitStr(compression + hxy));
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  var altnames = ASN1('A0'
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    , ASN1('30'
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        // (extensionRequest (PKCS #9 via CRMF))
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      , ASN1('06', '2A 86 48 86 F7 0D 01 09 0E')
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      , ASN1('31'
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        , ASN1('30'
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            // object id (commonName)
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          , ASN1('06', '55 04 03')
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          , ASN1('0C', Hex.fromString(domains[0])))))
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      // EC P-256 Public Key
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    , ASN1('30'
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      , ASN1('30'
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          // 1.2.840.10045.2.1 ecPublicKey
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          // (ANSI X9.62 public key type)
 | 
			
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        , ASN1('06', '2A 86 48 CE 3D 02 01')
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          // 1.2.840.10045.3.1.7 prime256v1
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          // (ANSI X9.62 named elliptic curve)
 | 
			
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        , ASN1('06', '2A 86 48 CE 3D 03 01 07')
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        )
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      , ASN1.BitStr(compression + hxy))
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      // CSR Extension Subject Alternative Names
 | 
			
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    , ASN1('A0'
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      , ASN1('30'
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          // (extensionRequest (PKCS #9 via CRMF))
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		||||
        , ASN1('06', '2A 86 48 86 F7 0D 01 09 0E')
 | 
			
		||||
        , ASN1('31'
 | 
			
		||||
          , ASN1('30'
 | 
			
		||||
              // (subjectAltName (X.509 extension))
 | 
			
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            , ASN1('06', '55 1D 11')
 | 
			
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            , ASN1('04'
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              , ASN1('30', domains.map(function (d) {
 | 
			
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                  return ASN1('82', strToHex(d));
 | 
			
		||||
                }).join(''))))))));
 | 
			
		||||
  var body = ASN1('30'
 | 
			
		||||
 | 
			
		||||
      // #0 Total 3
 | 
			
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    , version
 | 
			
		||||
 | 
			
		||||
      // Subject
 | 
			
		||||
      // #1 Total 2+11+n
 | 
			
		||||
    , subject
 | 
			
		||||
 | 
			
		||||
      // P-256 Public Key
 | 
			
		||||
      // #2 Total 2+25+xy
 | 
			
		||||
    , pubkey
 | 
			
		||||
 | 
			
		||||
      // Altnames
 | 
			
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      // #3 Total 2+28+n
 | 
			
		||||
    , altnames
 | 
			
		||||
            , ASN1('30'
 | 
			
		||||
                // (subjectAltName (X.509 extension))
 | 
			
		||||
              , ASN1('06', '55 1D 11')
 | 
			
		||||
              , ASN1('04'
 | 
			
		||||
                , ASN1('30', domains.map(function (d) {
 | 
			
		||||
                    return ASN1('82', Hex.fromString(d));
 | 
			
		||||
                  }).join(''))))))))
 | 
			
		||||
  );
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
  return body;
 | 
			
		||||
}
 | 
			
		||||
ECDSACSR.sign = function csrEcSig(keypem, request) {
 | 
			
		||||
  var sig = ECDSA.sign(keypem, AB.fromHex(request));
 | 
			
		||||
  var rLen = sig.r.byteLength;
 | 
			
		||||
  var rc = '';
 | 
			
		||||
  var sLen = sig.s.byteLength;
 | 
			
		||||
  var sc = '';
 | 
			
		||||
 | 
			
		||||
// https://gist.github.com/codermapuche/da4f96cdb6d5ff53b7ebc156ec46a10a
 | 
			
		||||
function signEc(keypem, ab) {
 | 
			
		||||
  if (0x80 & new Uint8Array(sig.r)[0]) { rc = '00'; rLen += 1; }
 | 
			
		||||
  if (0x80 & new Uint8Array(sig.s)[0]) { sc = '00'; sLen += 1; }
 | 
			
		||||
 | 
			
		||||
  return ASN1('30'
 | 
			
		||||
      // The Full CSR Request Body
 | 
			
		||||
    , request
 | 
			
		||||
 | 
			
		||||
      // The Signature Type
 | 
			
		||||
    , ASN1('30'
 | 
			
		||||
        // 1.2.840.10045.4.3.2 ecdsaWithSHA256
 | 
			
		||||
        // (ANSI X9.62 ECDSA algorithm with SHA256)
 | 
			
		||||
      , ASN1('06', '2A 86 48 CE 3D 04 03 02')
 | 
			
		||||
      )
 | 
			
		||||
 | 
			
		||||
      // The Signature, embedded in a Bit Stream
 | 
			
		||||
    , ASN1.BitStr(
 | 
			
		||||
        // As far as I can tell this is a completely separate ASN.1 structure
 | 
			
		||||
        // that just so happens to be embedded in a Bit String of another ASN.1
 | 
			
		||||
        ASN1('30'
 | 
			
		||||
        , ASN1.UInt(Hex.fromAB(sig.r))
 | 
			
		||||
        , ASN1.UInt(Hex.fromAB(sig.s))))
 | 
			
		||||
  );
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
//
 | 
			
		||||
// ECDSA
 | 
			
		||||
//
 | 
			
		||||
 | 
			
		||||
// Took some tips from https://gist.github.com/codermapuche/da4f96cdb6d5ff53b7ebc156ec46a10a
 | 
			
		||||
ECDSA.sign = function signEc(keypem, ab) {
 | 
			
		||||
  // Signer is a stream
 | 
			
		||||
  var sign = crypto.createSign('SHA256');
 | 
			
		||||
  sign.write(new Uint8Array(ab));
 | 
			
		||||
@ -355,63 +155,26 @@ function signEc(keypem, ab) {
 | 
			
		||||
  if (0 === r[0]) { r = r.slice(1); }
 | 
			
		||||
 | 
			
		||||
  return { raw: sig.buffer, r: r.buffer, s: s.buffer };
 | 
			
		||||
}
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
function createEcCsr(domains, keypem, ecpub) {
 | 
			
		||||
  // TODO get pub from priv
 | 
			
		||||
//
 | 
			
		||||
// DER
 | 
			
		||||
//
 | 
			
		||||
 | 
			
		||||
  var csrBody = createCsrBodyEc(domains, ecpub);
 | 
			
		||||
  var sig = signEc(keypem, fromHex(csrBody));
 | 
			
		||||
  var rLen = sig.r.byteLength;
 | 
			
		||||
  var rc = '';
 | 
			
		||||
  var sLen = sig.s.byteLength;
 | 
			
		||||
  var sc = '';
 | 
			
		||||
 | 
			
		||||
  if (0x80 & new Uint8Array(sig.r)[0]) { rc = '00'; rLen += 1; }
 | 
			
		||||
  if (0x80 & new Uint8Array(sig.s)[0]) { sc = '00'; sLen += 1; }
 | 
			
		||||
 | 
			
		||||
  var csrSig = csrEcSig(sig.r, sig.s);
 | 
			
		||||
 | 
			
		||||
  /*
 | 
			
		||||
  console.log('sig:', sig.raw.byteLength, toHex(sig.raw));
 | 
			
		||||
  console.log('r:', sig.r.byteLength, toHex(sig.r));
 | 
			
		||||
  console.log('s:', sig.s.byteLength, toHex(sig.s));
 | 
			
		||||
  console.log('csr sig:', csrSig.length / 2, csrSig);
 | 
			
		||||
  console.log('csrBodyLen + csrSigLen', numToHex(len));
 | 
			
		||||
  */
 | 
			
		||||
  return fromHex(ASN1('30', csrBody, csrSig));
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
function createEcCsrPem(domains, keypem) {
 | 
			
		||||
  var pemblock = parsePem(keypem);
 | 
			
		||||
  var ecpub = readEcPubkey(pemblock.der);
 | 
			
		||||
  var ab = createEcCsr(domains, keypem, ecpub);
 | 
			
		||||
  var pem = formatAsPem(toBase64(ab));
 | 
			
		||||
DER.toCSR = function createEcCsrPem(der) {
 | 
			
		||||
  var pem = PEM._format(AB.toBase64(der));
 | 
			
		||||
  return '-----BEGIN CERTIFICATE REQUEST-----\n' + pem + '-----END CERTIFICATE REQUEST-----';
 | 
			
		||||
}
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
// Taken from Unibabel
 | 
			
		||||
// https://git.coolaj86.com/coolaj86/unibabel.js#readme
 | 
			
		||||
// https://coolaj86.com/articles/base64-unicode-utf-8-javascript-and-you/
 | 
			
		||||
function utf8ToUint8Array(str) {
 | 
			
		||||
  var escstr = encodeURIComponent(str);
 | 
			
		||||
  // replaces any uri escape sequence, such as %0A,
 | 
			
		||||
  // with binary escape, such as 0x0A
 | 
			
		||||
  var binstr = escstr.replace(/%([0-9A-F]{2})/g, function(match, p1) {
 | 
			
		||||
    return String.fromCharCode('0x' + p1);
 | 
			
		||||
  });
 | 
			
		||||
  var buf = new Uint8Array(binstr.length);
 | 
			
		||||
  binstr.split('').forEach(function (ch, i) {
 | 
			
		||||
    buf[i] = ch.charCodeAt(0);
 | 
			
		||||
  });
 | 
			
		||||
//
 | 
			
		||||
// PEM
 | 
			
		||||
//
 | 
			
		||||
 | 
			
		||||
  return buf;
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
function ensurePem(key) {
 | 
			
		||||
// Just for error checking
 | 
			
		||||
PEM.from = function ensurePem(key) {
 | 
			
		||||
  if (!key) { throw new Error("no private key given"); }
 | 
			
		||||
  // whether PEM or DER, convert to Uint8Array
 | 
			
		||||
  if ('string' === typeof key) { key = utf8ToUint8Array(key); }
 | 
			
		||||
  if ('string' === typeof key) { key = AB.utf8ToUint8Array(key); }
 | 
			
		||||
 | 
			
		||||
  // for consistency
 | 
			
		||||
  if (key instanceof Buffer) { key = new Uint8Array(key.buffer.slice(key.byteOffset, key.byteOffset + key.byteLength)); }
 | 
			
		||||
@ -434,7 +197,7 @@ function ensurePem(key) {
 | 
			
		||||
 | 
			
		||||
  // if DER, convert to PEM
 | 
			
		||||
  if ((0x30 === key[0]) && (0x80 & key[1])) {
 | 
			
		||||
    key = toBase64(key);
 | 
			
		||||
    key = AB.toBase64(key);
 | 
			
		||||
  }
 | 
			
		||||
  key = [].map.call(key, function (i) {
 | 
			
		||||
    return String.fromCharCode(i);
 | 
			
		||||
@ -448,7 +211,224 @@ function ensurePem(key) {
 | 
			
		||||
    throw new Error("key does not appear to be in PEM formt (does not begin with either '-' or 'M'),"
 | 
			
		||||
      + " nor DER format (does not begin with 0x308X)");
 | 
			
		||||
  }
 | 
			
		||||
}
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
PEM.parseBlock = function parsePem(pem) {
 | 
			
		||||
  var typ;
 | 
			
		||||
  var pub;
 | 
			
		||||
  var crv;
 | 
			
		||||
  var der = AB.fromBase64(pem.split(/\n/).filter(function (line, i) {
 | 
			
		||||
    if (0 === i) {
 | 
			
		||||
      if (/ PUBLIC /.test(line)) {
 | 
			
		||||
        pub = true;
 | 
			
		||||
      } else if (/ PRIVATE /.test(line)) {
 | 
			
		||||
        pub = false;
 | 
			
		||||
      }
 | 
			
		||||
      if (/ EC/.test(line)) {
 | 
			
		||||
        typ = 'EC';
 | 
			
		||||
      }
 | 
			
		||||
    }
 | 
			
		||||
    return !/---/.test(line);
 | 
			
		||||
  }).join(''));
 | 
			
		||||
 | 
			
		||||
  if (!typ || 'EC' === typ) {
 | 
			
		||||
    var hex = Hex.fromAB(der).toLowerCase();
 | 
			
		||||
    if (-1 !== hex.indexOf(OBJ_ID_EC)) {
 | 
			
		||||
      typ = 'EC';
 | 
			
		||||
      crv = 'P-256';
 | 
			
		||||
    } else {
 | 
			
		||||
      // TODO support P-384 as well (but probably nothing else)
 | 
			
		||||
      console.warn("unsupported ec curve");
 | 
			
		||||
    }
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  return { typ: typ, pub: pub, der: der, crv: crv };
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
PEM._format = function formatAsPem(str) {
 | 
			
		||||
  var finalString = '';
 | 
			
		||||
 | 
			
		||||
  while (str.length > 0) {
 | 
			
		||||
      finalString += str.substring(0, 64) + '\n';
 | 
			
		||||
      str = str.substring(64);
 | 
			
		||||
  }
 | 
			
		||||
  return finalString;
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
PEM.parseEcPubkey = function readEcPubkey(der) {
 | 
			
		||||
  // the key is the last 520 bits of both the private key and the public key
 | 
			
		||||
  // he 3 bits prior identify the key as
 | 
			
		||||
  var x, y;
 | 
			
		||||
  var compressed;
 | 
			
		||||
  var keylen = 32;
 | 
			
		||||
  var offset = 64;
 | 
			
		||||
  var headerSize = 4;
 | 
			
		||||
  var header = Hex.fromAB(der.slice(der.byteLength - (offset + headerSize), der.byteLength - offset));
 | 
			
		||||
 | 
			
		||||
  if ('03420004' !== header) {
 | 
			
		||||
    offset = 32;
 | 
			
		||||
    header = Hex.fromAB(der.slice(der.byteLength - (offset + headerSize), der.byteLength - offset));
 | 
			
		||||
    if ('03420002' !== header) {
 | 
			
		||||
      throw new Error("not a valid EC P-256 key (expected 0x0342004 or 0x0342002 as pub key preamble, but found " + header + ")");
 | 
			
		||||
    }
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  // The one good thing that came from the b***kchain hysteria: good EC documentation
 | 
			
		||||
  // https://davidederosa.com/basic-blockchain-programming/elliptic-curve-keys/
 | 
			
		||||
  compressed = ('2' === header[header.byteLength -1]);
 | 
			
		||||
  x = der.slice(der.byteLength - offset, (der.byteLength - offset) + keylen);
 | 
			
		||||
  if (!compressed) {
 | 
			
		||||
    y = der.slice(der.byteLength - keylen, der.byteLength);
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  return {
 | 
			
		||||
    x: x
 | 
			
		||||
  , y: y || null
 | 
			
		||||
  };
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
//
 | 
			
		||||
// A dumbed-down, minimal ASN.1 packer
 | 
			
		||||
//
 | 
			
		||||
 | 
			
		||||
// Almost every ASN.1 type that's important for CSR
 | 
			
		||||
// can be represented generically with only a few rules.
 | 
			
		||||
ASN1 = function ASN1(/*type, hexstrings...*/) {
 | 
			
		||||
  var args = Array.prototype.slice.call(arguments);
 | 
			
		||||
  var typ = args.shift();
 | 
			
		||||
  var str = args.join('').replace(/\s+/g, '').toLowerCase();
 | 
			
		||||
  var len = (str.length/2);
 | 
			
		||||
  var lenlen = 0;
 | 
			
		||||
  var hex = typ;
 | 
			
		||||
 | 
			
		||||
  // We can't have an odd number of hex chars
 | 
			
		||||
  if (len !== Math.round(len)) {
 | 
			
		||||
    throw new Error("invalid hex");
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  // The first byte of any ASN.1 sequence is the type (Sequence, Integer, etc)
 | 
			
		||||
  // The second byte is either the size of the value, or the size of its size
 | 
			
		||||
 | 
			
		||||
  // 1. If the second byte is < 0x80 (128) it is considered the size
 | 
			
		||||
  // 2. If it is > 0x80 then it describes the number of bytes of the size
 | 
			
		||||
  //    ex: 0x82 means the next 2 bytes describe the size of the value
 | 
			
		||||
  // 3. The special case of exactly 0x80 is "indefinite" length (to end-of-file)
 | 
			
		||||
 | 
			
		||||
  if (len > 127) {
 | 
			
		||||
    lenlen += 1;
 | 
			
		||||
    while (len > 255) {
 | 
			
		||||
      lenlen += 1;
 | 
			
		||||
      len = len >> 8;
 | 
			
		||||
    }
 | 
			
		||||
  }
 | 
			
		||||
 | 
			
		||||
  if (lenlen) { hex += Hex.fromInt(0x80 + lenlen); }
 | 
			
		||||
  return hex + Hex.fromInt(str.length/2) + str;
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
// The Integer type has some special rules
 | 
			
		||||
ASN1.UInt = function UINT() {
 | 
			
		||||
  var str = Array.prototype.slice.call(arguments).join('');
 | 
			
		||||
  var first = parseInt(str.slice(0, 2), 16);
 | 
			
		||||
 | 
			
		||||
  // If the first byte is 0x80 or greater, the number is considered negative
 | 
			
		||||
  // Therefore we add a '00' prefix if the 0x80 bit is set
 | 
			
		||||
  if (0x80 & first) { str = '00' + str; }
 | 
			
		||||
 | 
			
		||||
  return ASN1('02', str);
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
// The Bit String type also has a special rule
 | 
			
		||||
ASN1.BitStr = function BITSTR() {
 | 
			
		||||
  var str = Array.prototype.slice.call(arguments).join('');
 | 
			
		||||
  // '00' is a mask of how many bits of the next byte to ignore
 | 
			
		||||
  return ASN1('03', '00' + str);
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
//
 | 
			
		||||
// Hex, Base64, Buffer, String
 | 
			
		||||
//
 | 
			
		||||
 | 
			
		||||
Hex.fromAB = function toHex(ab) {
 | 
			
		||||
  var hex = [];
 | 
			
		||||
  var u8 = new Uint8Array(ab);
 | 
			
		||||
  var size = u8.byteLength;
 | 
			
		||||
  var i;
 | 
			
		||||
  var h;
 | 
			
		||||
  for (i = 0; i < size; i += 1) {
 | 
			
		||||
    h = u8[i].toString(16);
 | 
			
		||||
    if (2 === h.length) {
 | 
			
		||||
      hex.push(h);
 | 
			
		||||
    } else {
 | 
			
		||||
      hex.push('0' + h);
 | 
			
		||||
    }
 | 
			
		||||
  }
 | 
			
		||||
  return hex.join('');
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
Hex.fromString = function strToHex(str) {
 | 
			
		||||
  var escstr = encodeURIComponent(str);
 | 
			
		||||
  // replaces any uri escape sequence, such as %0A,
 | 
			
		||||
  // with binary escape, such as 0x0A
 | 
			
		||||
  var binstr = escstr.replace(/%([0-9A-F]{2})/g, function(match, p1) {
 | 
			
		||||
    return String.fromCharCode('0x' + p1);
 | 
			
		||||
  });
 | 
			
		||||
  return binstr.split('').map(function (b) {
 | 
			
		||||
    var h = b.charCodeAt(0).toString(16);
 | 
			
		||||
    if (2 === h.length) { return h; }
 | 
			
		||||
    return '0' + h;
 | 
			
		||||
  }).join('');
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
Hex.fromInt = function numToHex(d) {
 | 
			
		||||
  d = d.toString(16);
 | 
			
		||||
  if (d.length % 2) {
 | 
			
		||||
    return '0' + d;
 | 
			
		||||
  }
 | 
			
		||||
  return d;
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
// Taken from Unibabel
 | 
			
		||||
// https://git.coolaj86.com/coolaj86/unibabel.js#readme
 | 
			
		||||
// https://coolaj86.com/articles/base64-unicode-utf-8-javascript-and-you/
 | 
			
		||||
AB.utf8ToUint8Array = function (str) {
 | 
			
		||||
  var escstr = encodeURIComponent(str);
 | 
			
		||||
  // replaces any uri escape sequence, such as %0A,
 | 
			
		||||
  // with binary escape, such as 0x0A
 | 
			
		||||
  var binstr = escstr.replace(/%([0-9A-F]{2})/g, function(match, p1) {
 | 
			
		||||
    return String.fromCharCode('0x' + p1);
 | 
			
		||||
  });
 | 
			
		||||
  var buf = new Uint8Array(binstr.length);
 | 
			
		||||
  binstr.split('').forEach(function (ch, i) {
 | 
			
		||||
    buf[i] = ch.charCodeAt(0);
 | 
			
		||||
  });
 | 
			
		||||
 | 
			
		||||
  return buf;
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
AB.fromHex = function fromHex(hex) {
 | 
			
		||||
  if ('undefined' !== typeof Buffer) {
 | 
			
		||||
    return Buffer.from(hex, 'hex');
 | 
			
		||||
  }
 | 
			
		||||
  var ab = new ArrayBuffer(hex.length/2);
 | 
			
		||||
  var i;
 | 
			
		||||
  var j;
 | 
			
		||||
  ab = new Uint8Array(ab);
 | 
			
		||||
  for (i = 0, j = 0; i < (hex.length/2); i += 1) {
 | 
			
		||||
    ab[i] = parseInt(hex.slice(j, j+1), 16);
 | 
			
		||||
    j += 2;
 | 
			
		||||
  }
 | 
			
		||||
  return ab.buffer;
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
AB.fromBase64 = function fromBase64(b64) {
 | 
			
		||||
  var buf = Buffer.from(b64, 'base64');
 | 
			
		||||
  return buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.byteLength);
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
AB.toBase64 = function toBase64(der) {
 | 
			
		||||
  return Buffer.from(der).toString('base64');
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
/*global Promise*/
 | 
			
		||||
module.exports = function (opts) {
 | 
			
		||||
@ -471,8 +451,7 @@ module.exports = function (opts) {
 | 
			
		||||
    })) {
 | 
			
		||||
      throw new Error("You must pass options.domains as utf8 strings (not punycode)");
 | 
			
		||||
    }
 | 
			
		||||
    var key = ensurePem(opts.key);
 | 
			
		||||
 | 
			
		||||
    return createEcCsrPem(opts.domains, key);
 | 
			
		||||
    var key = PEM.from(opts.key);
 | 
			
		||||
    return DER.toCSR(ECDSACSR.create(key, opts.domains));
 | 
			
		||||
  });
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
@ -1,6 +1,6 @@
 | 
			
		||||
{
 | 
			
		||||
  "name": "ecdsa-csr",
 | 
			
		||||
  "version": "1.1.0",
 | 
			
		||||
  "version": "1.1.1",
 | 
			
		||||
  "description": "A focused, zero-dependency library to generate a Certificate Signing Request (CSR) and sign it!",
 | 
			
		||||
  "main": "index.js",
 | 
			
		||||
  "bin": {
 | 
			
		||||
 | 
			
		||||
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