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31 lines
779 B
31 lines
779 B
'use strict';
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//var ASN1 = require('./asn1.js');
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var x509 = module.exports;
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x509.guess = function (der, asn1) {
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// accepting der for compatability with other usages
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var meta = { kty: 'RSA', format: 'pkcs1', public: true };
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//meta.asn1 = ASN1.parse(u8);
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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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if (2 === asn1.children.length) {
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// rsa pkcs1 public
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return meta;
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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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meta.public = false;
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// rsa pkcs1 private
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return meta;
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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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} else {
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meta.format = 'pkcs8';
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}
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return meta;
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};
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