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92 lines
3.4 KiB
JavaScript
92 lines
3.4 KiB
JavaScript
/*! rsapem-1.1.js (c) 2012 Kenji Urushima | kjur.github.com/jsrsasign/license
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*/
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//
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// rsa-pem.js - adding function for reading/writing PKCS#1 PEM private key
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// to RSAKey class.
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//
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// version: 1.1 (2012-May-10)
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//
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// Copyright (c) 2010-2012 Kenji Urushima (kenji.urushima@gmail.com)
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//
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// This software is licensed under the terms of the MIT License.
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// http://kjur.github.com/jsrsasign/license/
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//
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// The above copyright and license notice shall be
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// included in all copies or substantial portions of the Software.
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//
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//
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// Depends on:
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//
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//
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//
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// _RSApem_pemToBase64(sPEM)
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//
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// removing PEM header, PEM footer and space characters including
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// new lines from PEM formatted RSA private key string.
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//
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function _rsapem_pemToBase64(sPEMPrivateKey) {
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var s = sPEMPrivateKey;
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s = s.replace("-----BEGIN RSA PRIVATE KEY-----", "");
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s = s.replace("-----END RSA PRIVATE KEY-----", "");
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s = s.replace(/[ \n]+/g, "");
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return s;
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}
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function _rsapem_getPosArrayOfChildrenFromHex(hPrivateKey) {
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var a = new Array();
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// tjp
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var nul = ASN1HEX.getStartPosOfV_AtObj(hPrivateKey, 0);
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var identifier = ASN1HEX.getPosOfNextSibling_AtObj(hPrivateKey, nul);
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var octet = ASN1HEX.getPosOfNextSibling_AtObj(hPrivateKey, identifier);
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var sequence = ASN1HEX.getStartPosOfV_AtObj(hPrivateKey, octet);
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var v1 = ASN1HEX.getStartPosOfV_AtObj(hPrivateKey, sequence);
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// end tjp
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// get values
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// var v1 = ASN1HEX.getStartPosOfV_AtObj(hPrivateKey, 0);
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var n1 = ASN1HEX.getPosOfNextSibling_AtObj(hPrivateKey, v1);
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var e1 = ASN1HEX.getPosOfNextSibling_AtObj(hPrivateKey, n1);
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var d1 = ASN1HEX.getPosOfNextSibling_AtObj(hPrivateKey, e1);
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var p1 = ASN1HEX.getPosOfNextSibling_AtObj(hPrivateKey, d1);
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var q1 = ASN1HEX.getPosOfNextSibling_AtObj(hPrivateKey, p1);
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var dp1 = ASN1HEX.getPosOfNextSibling_AtObj(hPrivateKey, q1);
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var dq1 = ASN1HEX.getPosOfNextSibling_AtObj(hPrivateKey, dp1);
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var co1 = ASN1HEX.getPosOfNextSibling_AtObj(hPrivateKey, dq1);
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a.push(v1, n1, e1, d1, p1, q1, dp1, dq1, co1);
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return a;
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}
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function _rsapem_getHexValueArrayOfChildrenFromHex(hPrivateKey) {
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var posArray = _rsapem_getPosArrayOfChildrenFromHex(hPrivateKey);
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var v = ASN1HEX.getHexOfV_AtObj(hPrivateKey, posArray[0]);
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var n = ASN1HEX.getHexOfV_AtObj(hPrivateKey, posArray[1]);
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var e = ASN1HEX.getHexOfV_AtObj(hPrivateKey, posArray[2]);
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var d = ASN1HEX.getHexOfV_AtObj(hPrivateKey, posArray[3]);
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var p = ASN1HEX.getHexOfV_AtObj(hPrivateKey, posArray[4]);
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var q = ASN1HEX.getHexOfV_AtObj(hPrivateKey, posArray[5]);
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var dp = ASN1HEX.getHexOfV_AtObj(hPrivateKey, posArray[6]);
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var dq = ASN1HEX.getHexOfV_AtObj(hPrivateKey, posArray[7]);
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var co = ASN1HEX.getHexOfV_AtObj(hPrivateKey, posArray[8]);
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var a = new Array();
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a.push(v, n, e, d, p, q, dp, dq, co);
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return a;
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}
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/**
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* read PKCS#1 private key from a string
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* @name readPrivateKeyFromPEMString
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* @memberOf RSAKey#
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* @function
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* @param {String} keyPEM string of PKCS#1 private key.
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*/
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function _rsapem_readPrivateKeyFromPEMString(keyPEM) {
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var keyB64 = _rsapem_pemToBase64(keyPEM);
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var keyHex = b64tohex(keyB64) // depends base64.js
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var a = _rsapem_getHexValueArrayOfChildrenFromHex(keyHex);
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this.setPrivateEx(a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8]);
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}
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RSAKey.prototype.readPrivateKeyFromPEMString = _rsapem_readPrivateKeyFromPEMString;
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