56 lines
1.5 KiB
JavaScript
56 lines
1.5 KiB
JavaScript
/*jslint browser: true, devel: true, sloppy: true, vars: true*/
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/*globals Uint8Array, Promise */
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var extractable = true;
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var encodePrivateKey, encodePublicKey;
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function wrap(text, len) {
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var length = len || 72,
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i,
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result = "";
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for (i = 0; i < text.length; i += length) {
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result += text.slice(i, i + length) + "\n";
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}
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return result;
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}
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function rsaPrivateKey(key) {
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return "-----BEGIN RSA PRIVATE KEY-----\n" + key + "-----END RSA PRIVATE KEY-----";
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}
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function arrayBufferToBase64(buffer) {
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var binary = "",
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i;
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var bytes = new Uint8Array(buffer);
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var len = bytes.byteLength;
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for (i = 0; i < len; i += 1) {
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binary += String.fromCharCode(bytes[i]);
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}
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return window.btoa(binary);
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}
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function generateKeyPair(alg, size, name) {
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return window.crypto.subtle
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.generateKey(
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{
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name: "RSASSA-PKCS1-v1_5",
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modulusLength: 2048, //can be 1024, 2048, or 4096
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publicExponent: new Uint8Array([0x01, 0x00, 0x01]),
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hash: { name: "SHA-1" }, //can be "SHA-1", "SHA-256", "SHA-384", or "SHA-512"
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},
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extractable,
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["sign", "verify"]
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)
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.then(function(key) {
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var privateKey = window.crypto.subtle
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.exportKey("jwk", key.privateKey)
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.then(encodePrivateKey)
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.then(wrap)
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.then(rsaPrivateKey);
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var publicKey = window.crypto.subtle.exportKey("jwk", key.publicKey).then(function(jwk) {
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return encodePublicKey(jwk, name);
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});
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return Promise.all([privateKey, publicKey]);
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});
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}
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