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add genAuthcode

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This commit is contained in:
Richard Ramos 2022-11-21 19:08:24 -04:00
parent 0fb4bb3183
commit 39f54c2c15
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GPG Key ID: BD36D48BC9FFC88C
4 changed files with 43 additions and 6 deletions
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30
package-lock.json generated
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@ -15,6 +15,7 @@
"@stablelib/random": "^1.0.2",
"@stablelib/sha256": "^1.0.1",
"@stablelib/x25519": "^1.0.1",
"bn.js": "^5.2.1",
"js-base64": "^3.7.3",
"pkcs7-padding": "^0.1.1",
"uint8arraylist": "^2.3.2",
@ -26,6 +27,7 @@
"@rollup/plugin-node-resolve": "^13.3.0",
"@size-limit/preset-big-lib": "^8.0.0",
"@types/app-root-path": "^1.2.4",
"@types/bn.js": "^5.1.1",
"@types/chai": "^4.2.15",
"@types/debug": "^4.1.7",
"@types/mocha": "^9.1.0",
@ -2566,6 +2568,15 @@
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"dependencies": {
"@types/node": "*"
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"version": "4.3.4",
"resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.3.4.tgz",
@ -3454,6 +3465,11 @@
"readable-stream": "^3.4.0"
}
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"resolved": "https://registry.npmjs.org/bn.js/-/bn.js-5.2.1.tgz",
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"resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.20.1.tgz",
@ -14021,6 +14037,15 @@
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"dev": true,
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"resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.3.4.tgz",
@ -14716,6 +14741,11 @@
"readable-stream": "^3.4.0"
}
},
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"version": "5.2.1",
"resolved": "https://registry.npmjs.org/bn.js/-/bn.js-5.2.1.tgz",
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2
package.json
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@ -49,6 +49,7 @@
"@rollup/plugin-node-resolve": "^13.3.0",
"@size-limit/preset-big-lib": "^8.0.0",
"@types/app-root-path": "^1.2.4",
"@types/bn.js": "^5.1.1",
"@types/chai": "^4.2.15",
"@types/debug": "^4.1.7",
"@types/mocha": "^9.1.0",
@ -119,6 +120,7 @@
"@stablelib/random": "^1.0.2",
"@stablelib/sha256": "^1.0.1",
"@stablelib/x25519": "^1.0.1",
"bn.js": "^5.2.1",
"js-base64": "^3.7.3",
"pkcs7-padding": "^0.1.1",
"uint8arraylist": "^2.3.2",

5
src/crypto.ts
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@ -35,6 +35,11 @@ export function getHKDF(ck: bytes32, ikm: Uint8Array): Hkdf {
return [k1, k2, k3];
}
export function getHKDFRaw(ck: bytes32, ikm: Uint8Array, numBytes: number): Uint8Array {
const hkdf = new HKDF(SHA256, ikm, ck);
return hkdf.expand(numBytes);
}
export function generateX25519KeyPair(): KeyPair {
const keypair = x25519.generateKeyPair();

12
src/handshake.ts
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@ -1,9 +1,10 @@
import { BN } from "bn.js";
import * as pkcs7 from "pkcs7-padding";
import { equals as uint8ArrayEquals } from "uint8arrays/equals";
import { bytes32 } from "./@types/basic";
import { KeyPair } from "./@types/keypair";
//import { getHKDF } from "./crypto";
import { getHKDFRaw } from "./crypto";
import { HandshakeState, NoisePaddingBlockSize } from "./handshake_state";
import { CipherState } from "./noise";
import { HandshakePattern, PayloadV2ProtocolIDs } from "./patterns";
@ -158,11 +159,10 @@ export class Handshake {
// Generates an 8 decimal digits authorization code using HKDF and the handshake state
genAuthcode(): string {
//var output: array[1, array[8, byte]]
// const [output0] = getHKDF(this.hs.ss.h, new Uint8Array());
// let code = cast[uint64](output[0]) mod 100_000_000
// return $code
return "TODO: implement";
const output0 = getHKDFRaw(this.hs.ss.h, new Uint8Array(), 8);
const bn = new BN(output0);
const code = bn.mod(new BN(100_000_000));
return code.toString();
}
// Advances 1 step in handshake