26 lines
567 B
JavaScript
26 lines
567 B
JavaScript
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/*!
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* jwe/helpers.js - JWE Internal Helper Functions
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*
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* Copyright (c) 2015 Cisco Systems, Inc. See LICENSE file.
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*/
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"use strict";
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var CONSTANTS = require("../algorithms/constants"),
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JWK = require("../jwk");
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module.exports = {
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slice: function(input, start) {
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return Array.prototype.slice.call(input, start || 0);
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},
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generateCEK: function(enc) {
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var ks = JWK.createKeyStore();
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var len = CONSTANTS.KEYLENGTH[enc];
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if (len) {
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return ks.generate("oct", len);
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}
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throw new Error("unsupported encryption algorithm");
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}
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};
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