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https://github.com/gchq/CyberChef
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Added message format arg to RSA Verify operation
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1 changed files with 9 additions and 2 deletions
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@ -8,6 +8,7 @@ import Operation from "../Operation.mjs";
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import OperationError from "../errors/OperationError.mjs";
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import forge from "node-forge";
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import { MD_ALGORITHMS } from "../lib/RSA.mjs";
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import Utils from "../Utils.mjs";
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/**
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* RSA Verify operation
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@ -37,6 +38,11 @@ class RSAVerify extends Operation {
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type: "text",
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value: ""
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},
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{
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name: "Message format",
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type: "option",
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value: ["Raw", "Hex", "Base64"]
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},
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{
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name: "Message Digest Algorithm",
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type: "option",
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@ -51,7 +57,7 @@ class RSAVerify extends Operation {
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* @returns {string}
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*/
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run(input, args) {
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const [pemKey, message, mdAlgo] = args;
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const [pemKey, message, format, mdAlgo] = args;
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if (pemKey.replace("-----BEGIN RSA PUBLIC KEY-----", "").length === 0) {
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throw new OperationError("Please enter a public key.");
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}
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@ -60,7 +66,8 @@ class RSAVerify extends Operation {
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const pubKey = forge.pki.publicKeyFromPem(pemKey);
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// Generate message digest
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const md = MD_ALGORITHMS[mdAlgo].create();
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md.update(message, "raw");
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const messageStr = Utils.convertToByteString(message, format);
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md.update(messageStr, "raw");
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// Compare signed message digest and generated message digest
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const result = pubKey.verify(md.digest().bytes(), input);
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return result ? "Verified OK" : "Verification Failure";
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