crypto#createECDH TypeScript Examples

The following examples show how to use crypto#createECDH. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: utils.ts    From eufy-security-client with MIT License 7 votes vote down vote up 
getAdvancedLockKey = (key: string, publicKey: string): string => {
    const ecdh: ECDH = createECDH("prime256v1");
    ecdh.generateKeys();
    const secret = ecdh.computeSecret(Buffer.concat([Buffer.from("04", "hex"), Buffer.from(publicKey, "hex")]));
    const randomValue = randomBytes(16);

    const derivedKey = eufyKDF(secret);
    const encryptedData = encryptAdvancedLockData(key, derivedKey.slice(0, 16), randomValue);

    const hmac = createHmac("sha256", derivedKey.slice(16));
    hmac.update(randomValue);
    hmac.update(encryptedData);
    const hmacDigest = hmac.digest();

    return Buffer.concat([Buffer.from(ecdh.getPublicKey("hex", "compressed"), "hex"), randomValue, encryptedData, hmacDigest]).toString("hex");
}
Example #2
Source File: crypto.ts    From FIDO2Client with MIT License 6 votes vote down vote up 
static regenerate(): IFido2CryptoKey {
        switch (Fido2Spec) {
            case Fido2SpecVersion.FIDO_2_1: {
                let key = createECDH('prime256v1');
                key.generateKeys();
                return { publicKey: key.getPublicKey(), privateKey: key.getPrivateKey() }
            }
            default:
                throw new CommonFido2SpecNotImplemented();
        }

    }
Example #3
Source File: crypto.ts    From FIDO2Client with MIT License 6 votes vote down vote up 
static sharedSecretGeneration(privateKey: Buffer, publicKey: Buffer): Buffer {
        switch (Fido2Spec) {
            case Fido2SpecVersion.FIDO_2_1: {
                let key = createECDH('prime256v1');
                key.setPrivateKey(privateKey);
                return Fido2Crypto.hash(key.computeSecret(publicKey));
            }
            default:
                throw new CommonFido2SpecNotImplemented();
        }
    }
Example #4
Source File: client-pin.ts    From FIDO2Client with MIT License 5 votes vote down vote up 
initialize(): void {
        this.key = createECDH('prime256v1');
        this.key.generateKeys();
    }
Example #5
Source File: api.ts    From eufy-security-client with MIT License 5 votes vote down vote up 
private ecdh: ECDH = createECDH("prime256v1");