feat: Add EC Brainpool curves

src/mechs/ec/crypto.ts

@@ -1,6 +1,7 @@
 import crypto from "crypto";
 import { AsnParser, AsnSerializer } from "@peculiar/asn1-schema";
 import { JsonParser, JsonSerializer } from "@peculiar/json-schema";
+import {BufferSourceConverter} from "pvtsutils";
 import * as core from "webcrypto-core";
 import { CryptoKey } from "../../keys";
 import { getOidByNamedCurve } from "./helper";
@@ -12,7 +13,7 @@ export class EcCrypto {
   public static publicKeyUsages = ["verify"];
   public static privateKeyUsages = ["sign", "deriveKey", "deriveBits"];
 
-  public static async generateKey(algorithm: EcKeyGenParams, extractable: boolean, keyUsages: KeyUsage[]): Promise<CryptoKeyPair> {
+  public static async generateKey(algorithm: EcKeyGenParams, extractable: boolean, keyUsages: KeyUsage[]): Promise<core.CryptoKeyPair> {
     const privateKey = new EcPrivateKey();
     privateKey.algorithm = algorithm;
     privateKey.extractable = extractable;
@@ -38,7 +39,7 @@ export class EcCrypto {
     privateKey.data = keys.privateKey;
     publicKey.data = keys.publicKey;
 
-    const res: CryptoKeyPair = {
+    const res = {
       privateKey,
       publicKey,
     };
@@ -61,12 +62,9 @@ export class EcCrypto {
     const signature = signer.sign(options);
     const ecSignature = AsnParser.parse(signature, core.asn1.EcDsaSignature);
 
-    const pointSize = this.getPointSize(key.algorithm.namedCurve);
+    const signatureRaw = core.EcUtils.encodeSignature(ecSignature, core.EcCurves.get(key.algorithm.namedCurve).size);
-    const r = this.addPadding(pointSize, Buffer.from(ecSignature.r));
-    const s = this.addPadding(pointSize, Buffer.from(ecSignature.s));
     
-    const signatureRaw = new Uint8Array(Buffer.concat([r, s])).buffer;
+    return signatureRaw.buffer;
-    return signatureRaw;
   }
 
   public static async verify(algorithm: EcdsaParams, key: EcPublicKey, signature: Uint8Array, data: Uint8Array): Promise<boolean> {
@@ -82,9 +80,10 @@ export class EcCrypto {
     };
 
     const ecSignature = new core.asn1.EcDsaSignature();
-    const pointSize = this.getPointSize(key.algorithm.namedCurve);
+    const namedCurve = core.EcCurves.get(key.algorithm.namedCurve);
-    ecSignature.r = this.removePadding(signature.slice(0, pointSize));
+    const signaturePoint = core.EcUtils.decodeSignature(signature, namedCurve.size);
-    ecSignature.s = this.removePadding(signature.slice(pointSize, pointSize + pointSize));
+    ecSignature.r = BufferSourceConverter.toArrayBuffer(signaturePoint.r);
+    ecSignature.s = BufferSourceConverter.toArrayBuffer(signaturePoint.s);
 
     const ecSignatureRaw = Buffer.from(AsnSerializer.serialize(ecSignature));
     const ok = signer.verify(options, ecSignatureRaw);
@@ -215,38 +214,8 @@ export class EcCrypto {
       case "P-521":
         return "secp521r1";
       default:
-        throw new core.OperationError(`Cannot convert WebCrypto named curve to NodeJs. Unknown name '${curve}'`);
+        return curve;
     }
   }
 
-  private static getPointSize(namedCurve: string) {
-    switch (namedCurve) {
-      case "P-256":
-      case "K-256":
-        return 32;
-      case "P-384":
-        return 48;
-      case "P-521":
-        return 66;
-      default:
-        throw new Error(`Cannot get size for the named curve '${namedCurve}'`);
-    }
-  }
-
-  private static addPadding(pointSize: number, bytes: Buffer) {
-    const res = Buffer.alloc(pointSize);
-    res.set(Buffer.from(bytes), pointSize - bytes.length);
-    return res;
-  }
-
-  private static removePadding(bytes: Uint8Array) {
-    for (let i = 0; i < bytes.length; i++) {
-      if (!bytes[i]) {
-        continue;
-      }
-      return bytes.slice(i).buffer;
-    }
-    return new ArrayBuffer(0);
-  }
-
 }

src/mechs/ec/ec_dh.ts

@@ -7,7 +7,9 @@ import { EcPublicKey } from "./public_key";
 
 export class EcdhProvider extends core.EcdhProvider {
 
-  public async onGenerateKey(algorithm: EcKeyGenParams, extractable: boolean, keyUsages: KeyUsage[]): Promise<CryptoKeyPair> {
+  public namedCurves = core.EcCurves.names;
+
+  public async onGenerateKey(algorithm: EcKeyGenParams, extractable: boolean, keyUsages: KeyUsage[]): Promise<core.CryptoKeyPair> {
     const keys = await EcCrypto.generateKey(
       {
         ...algorithm,

src/mechs/ec/ec_dsa.ts

@@ -6,9 +6,9 @@ import { EcPublicKey } from "./public_key";
 
 export class EcdsaProvider extends core.EcdsaProvider {
 
-  public namedCurves = ["P-256", "P-384", "P-521", "K-256"];
+  public namedCurves = core.EcCurves.names;
 
-  public async onGenerateKey(algorithm: EcKeyGenParams, extractable: boolean, keyUsages: KeyUsage[]): Promise<CryptoKeyPair> {
+  public async onGenerateKey(algorithm: EcKeyGenParams, extractable: boolean, keyUsages: KeyUsage[]): Promise<core.CryptoKeyPair> {
     const keys = await EcCrypto.generateKey(
       {
         ...algorithm,

src/mechs/ec/helper.ts

@@ -13,6 +13,36 @@ const namedOIDs: { [key: string]: string } = {
   // K-256
   "1.3.132.0.10": "K-256",
   "K-256": "1.3.132.0.10",
+
+  // brainpool
+  "brainpoolP160r1": "1.3.36.3.3.2.8.1.1.1",
+  "1.3.36.3.3.2.8.1.1.1": "brainpoolP160r1",
+  "brainpoolP160t1": "1.3.36.3.3.2.8.1.1.2",
+  "1.3.36.3.3.2.8.1.1.2": "brainpoolP160t1",
+  "brainpoolP192r1": "1.3.36.3.3.2.8.1.1.3",
+  "1.3.36.3.3.2.8.1.1.3": "brainpoolP192r1",
+  "brainpoolP192t1": "1.3.36.3.3.2.8.1.1.4",
+  "1.3.36.3.3.2.8.1.1.4": "brainpoolP192t1",
+  "brainpoolP224r1": "1.3.36.3.3.2.8.1.1.5",
+  "1.3.36.3.3.2.8.1.1.5": "brainpoolP224r1",
+  "brainpoolP224t1": "1.3.36.3.3.2.8.1.1.6",
+  "1.3.36.3.3.2.8.1.1.6": "brainpoolP224t1",
+  "brainpoolP256r1": "1.3.36.3.3.2.8.1.1.7",
+  "1.3.36.3.3.2.8.1.1.7": "brainpoolP256r1",
+  "brainpoolP256t1": "1.3.36.3.3.2.8.1.1.8",
+  "1.3.36.3.3.2.8.1.1.8": "brainpoolP256t1",
+  "brainpoolP320r1": "1.3.36.3.3.2.8.1.1.9",
+  "1.3.36.3.3.2.8.1.1.9": "brainpoolP320r1",
+  "brainpoolP320t1": "1.3.36.3.3.2.8.1.1.10",
+  "1.3.36.3.3.2.8.1.1.10": "brainpoolP320t1",
+  "brainpoolP384r1": "1.3.36.3.3.2.8.1.1.11",
+  "1.3.36.3.3.2.8.1.1.11": "brainpoolP384r1",
+  "brainpoolP384t1": "1.3.36.3.3.2.8.1.1.12",
+  "1.3.36.3.3.2.8.1.1.12": "brainpoolP384t1",
+  "brainpoolP512r1": "1.3.36.3.3.2.8.1.1.13",
+  "1.3.36.3.3.2.8.1.1.13": "brainpoolP512r1",
+  "brainpoolP512t1": "1.3.36.3.3.2.8.1.1.14",
+  "1.3.36.3.3.2.8.1.1.14": "brainpoolP512t1",
 };
 
 export function getNamedCurveByOid(oid: string) {

src/mechs/ed/crypto.ts

@@ -12,7 +12,7 @@ export class EdCrypto {
   public static publicKeyUsages = ["verify"];
   public static privateKeyUsages = ["sign", "deriveKey", "deriveBits"];
 
-  public static async generateKey(algorithm: EcKeyGenParams, extractable: boolean, keyUsages: KeyUsage[]): Promise<CryptoKeyPair> {
+  public static async generateKey(algorithm: EcKeyGenParams, extractable: boolean, keyUsages: KeyUsage[]): Promise<core.CryptoKeyPair> {
     const privateKey = new EdPrivateKey();
     privateKey.algorithm = algorithm;
     privateKey.extractable = extractable;
@@ -38,7 +38,7 @@ export class EdCrypto {
     privateKey.data = keys.privateKey;
     publicKey.data = keys.publicKey;
 
-    const res: CryptoKeyPair = {
+    const res = {
       privateKey,
       publicKey,
     };

test/crypto.ts

@@ -1,6 +1,7 @@
 import assert from "assert";
 import process from "process";
 import { WebcryptoTest } from "@peculiar/webcrypto-test";
+import { Convert } from "pvtsutils";
 import * as core from "webcrypto-core";
 import { Crypto } from "../src";
 
@@ -12,7 +13,6 @@ const crypto = new Crypto();
 WebcryptoTest.check(crypto as any, {});
 context("Crypto", () => {
 
-
   context("getRandomValues", () => {
 
     it("Uint8Array", () => {
@@ -66,13 +66,14 @@ context("Crypto", () => {
     context("generateKey", () => {
 
       it("Ed25519", async () => {
-          const keys = await crypto.subtle.generateKey({ name: "eddsa", namedCurve: "ed25519" } as globalThis.EcKeyGenParams, false, ["sign", "verify"]) as CryptoKeyPair;
+        const keys = await crypto.subtle.generateKey({ name: "eddsa", namedCurve: "ed25519" } as globalThis.EcKeyGenParams, false, ["sign", "verify"]);
+        
         assert.strictEqual(keys.privateKey.algorithm.name, "EdDSA");
         assert.strictEqual((keys.privateKey.algorithm as EcKeyAlgorithm).namedCurve, "Ed25519");
       });
 
       it("Ed448", async () => {
-          const keys = await crypto.subtle.generateKey({ name: "eddsa", namedCurve: "ed448" } as globalThis.EcKeyGenParams, true, ["sign", "verify"]) as CryptoKeyPair;
+        const keys = await crypto.subtle.generateKey({ name: "eddsa", namedCurve: "ed448" } as globalThis.EcKeyGenParams, true, ["sign", "verify"]);
         assert.strictEqual(keys.privateKey.algorithm.name, "EdDSA");
         assert.strictEqual((keys.privateKey.algorithm as EcKeyAlgorithm).namedCurve, "Ed448");
 
@@ -97,13 +98,13 @@ context("Crypto", () => {
     context("generateKey", () => {
 
       it("X25519", async () => {
-        const keys = await crypto.subtle.generateKey({ name: "ecdh-es", namedCurve: "x25519" } as globalThis.EcKeyGenParams, false, ["deriveBits", "deriveKey"]) as CryptoKeyPair;
+        const keys = await crypto.subtle.generateKey({ name: "ecdh-es", namedCurve: "x25519" } as globalThis.EcKeyGenParams, false, ["deriveBits", "deriveKey"]);
         assert.strictEqual(keys.privateKey.algorithm.name, "ECDH-ES");
         assert.strictEqual((keys.privateKey.algorithm as EcKeyAlgorithm).namedCurve, "X25519");
       });
 
       it("X448", async () => {
-        const keys = await crypto.subtle.generateKey({ name: "ecdh-es", namedCurve: "x448" } as globalThis.EcKeyGenParams, true, ["deriveBits", "deriveKey"]) as CryptoKeyPair;
+        const keys = await crypto.subtle.generateKey({ name: "ecdh-es", namedCurve: "x448" } as globalThis.EcKeyGenParams, true, ["deriveBits", "deriveKey"]);
         assert.strictEqual(keys.privateKey.algorithm.name, "ECDH-ES");
         assert.strictEqual((keys.privateKey.algorithm as EcKeyAlgorithm).namedCurve, "X448");
 
@@ -120,4 +121,78 @@ context("Crypto", () => {
 
   });
 
+  context("Extra ECC named curves", () => {
+    const namedCurves = [
+      "brainpoolP160r1",
+      "brainpoolP160t1",
+      "brainpoolP192r1",
+      "brainpoolP192t1",
+      "brainpoolP224r1",
+      "brainpoolP224t1",
+      "brainpoolP256r1",
+      "brainpoolP256t1",
+      "brainpoolP320r1",
+      "brainpoolP320t1",
+      "brainpoolP384r1",
+      "brainpoolP384t1",
+      "brainpoolP512r1",
+      "brainpoolP512t1",
+    ];
+
+    context("sign/verify + pkcs8/spki", () => {
+      const data = new Uint8Array(10);
+
+      namedCurves.forEach((namedCurve) => {
+        it(namedCurve, async () => {
+          const alg: EcKeyGenParams = { name: "ECDSA", namedCurve };
+          const signAlg = { ...alg, hash: "SHA-256" } as EcdsaParams;
+
+          const keys = await crypto.subtle.generateKey(alg, true, ["sign", "verify"]);
+
+          const signature = await crypto.subtle.sign(signAlg, keys.privateKey, data);
+
+          const ok = await crypto.subtle.verify(signAlg, keys.publicKey, signature, data);
+          assert.ok(ok);
+
+          const pkcs8 = await crypto.subtle.exportKey("pkcs8", keys.privateKey);
+          const spki = await crypto.subtle.exportKey("spki", keys.publicKey);
+
+          const privateKey = await crypto.subtle.importKey("pkcs8", pkcs8, alg, true, ["sign"]);
+          const publicKey = await crypto.subtle.importKey("spki", spki, alg, true, ["verify"]);
+
+          const signature2 = await crypto.subtle.sign(signAlg, privateKey, data);
+          const ok2 = await crypto.subtle.verify(signAlg, keys.publicKey, signature2, data);
+          assert.ok(ok2);
+
+          const ok3 = await crypto.subtle.verify(signAlg, publicKey, signature, data);
+          assert.ok(ok3);
+        });
+      });
+    });
+
+    context("deriveBits + jwk", () => {
+      namedCurves.forEach((namedCurve) => {
+        it(namedCurve, async () => {
+          const alg: EcKeyGenParams = { name: "ECDH", namedCurve };
+
+          const keys = await crypto.subtle.generateKey(alg, true, ["deriveBits", "deriveKey"]);
+
+          const deriveAlg: EcdhKeyDeriveParams = { name: "ECDH", public: keys.publicKey };
+          const derivedBits = await crypto.subtle.deriveBits(deriveAlg, keys.privateKey, 128);
+
+          const privateJwk = await crypto.subtle.exportKey("jwk", keys.privateKey);
+          const publicJwk = await crypto.subtle.exportKey("jwk", keys.publicKey);
+          const privateKey = await crypto.subtle.importKey("jwk", privateJwk, alg, true, ["deriveBits"]);
+          const publicKey = await crypto.subtle.importKey("jwk", publicJwk, alg, true, []);
+
+          const derivedBits2 = await crypto.subtle.deriveBits({ name: "ECDH", public: keys.publicKey } as EcdhKeyDeriveParams, privateKey, 128);
+          const derivedBits3 = await crypto.subtle.deriveBits({ name: "ECDH", public: publicKey } as EcdhKeyDeriveParams, keys.privateKey, 128);
+
+          assert.strictEqual(Convert.ToHex(derivedBits2), Convert.ToHex(derivedBits));
+          assert.strictEqual(Convert.ToHex(derivedBits3), Convert.ToHex(derivedBits));
+        });
+      });
+    });
+  });
+
 });