96 lines
2.2 KiB
JavaScript
96 lines
2.2 KiB
JavaScript
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/*!
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* parse/compact.js - JOSE JSON Serialization Parser
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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 merge = require("../util/merge");
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var jose = {
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JWE: require("../jwe"),
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JWS: require("../jws"),
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util: require("../util")
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};
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function parseJSON(input) {
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var type,
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op,
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headers;
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if ("signatures" in input || "signature" in input) {
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// JWS
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type = "JWS";
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op = function(ks, opts) {
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return jose.JWS.createVerify(ks).
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verify(input, opts);
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};
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// headers can be (signatures[].protected, signatures[].header, signature.protected, signature.header)
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headers = input.signatures ||
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[ {
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protected: input.protected,
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header: input.header,
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signature: input.signature
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}];
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headers = headers.map(function(sig) {
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var all = {};
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if (sig.header) {
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all = merge(all, sig.header);
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}
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var prot;
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if (sig.protected) {
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prot = sig.protected;
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prot = jose.util.base64url.decode(prot, "utf8");
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prot = JSON.parse(prot);
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all = merge(all, prot);
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}
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return all;
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});
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} else if ("ciphertext" in input) {
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// JWE
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type = "JWE";
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op = function(ks, opts) {
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return jose.JWE.createDecrypt(ks).
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decrypt(input, opts);
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};
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// headers can be (protected, unprotected, recipients[].header)
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var root = {};
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if (input.protected) {
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root.protected = input.protected;
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root.protected = jose.util.base64url.decode(root.protected, "utf8");
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root.protected = JSON.parse(root.protected);
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}
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if (input.unprotected) {
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root.unprotected = input.unprotected;
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}
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headers = input.recipients || [{}];
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headers = headers.map(function(rcpt) {
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var all = {};
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if (rcpt.header) {
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all = merge(all, rcpt.header);
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}
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if (root.unprotected) {
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all = merge(all, root.unprotected);
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}
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if (root.protected) {
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all = merge(all, root.protected);
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}
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return all;
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});
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}
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return {
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type: type,
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format: "json",
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input: input,
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all: headers,
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perform: op
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};
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}
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module.exports = parseJSON;
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