[EC-281] Add de/serialization methods to CipherView objects (#2970)

libs/common/spec/models/domain/symmetricCryptoKey.spec.ts

@@ -0,0 +1,86 @@
+import { EncryptionType } from "@bitwarden/common/enums/encryptionType";
+import { SymmetricCryptoKey } from "@bitwarden/common/models/domain/symmetricCryptoKey";
+
+import { makeStaticByteArray } from "../../utils";
+
+describe("SymmetricCryptoKey", () => {
+  it("errors if no key", () => {
+    const t = () => {
+      new SymmetricCryptoKey(null);
+    };
+
+    expect(t).toThrowError("Must provide key");
+  });
+
+  describe("guesses encKey from key length", () => {
+    it("AesCbc256_B64", () => {
+      const key = makeStaticByteArray(32);
+      const cryptoKey = new SymmetricCryptoKey(key);
+
+      expect(cryptoKey).toEqual({
+        encKey: key,
+        encKeyB64: "AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8=",
+        encType: 0,
+        key: key,
+        keyB64: "AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8=",
+        macKey: null,
+      });
+    });
+
+    it("AesCbc128_HmacSha256_B64", () => {
+      const key = makeStaticByteArray(32);
+      const cryptoKey = new SymmetricCryptoKey(key, EncryptionType.AesCbc128_HmacSha256_B64);
+
+      expect(cryptoKey).toEqual({
+        encKey: key.slice(0, 16),
+        encKeyB64: "AAECAwQFBgcICQoLDA0ODw==",
+        encType: 1,
+        key: key,
+        keyB64: "AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8=",
+        macKey: key.slice(16, 32),
+        macKeyB64: "EBESExQVFhcYGRobHB0eHw==",
+      });
+    });
+
+    it("AesCbc256_HmacSha256_B64", () => {
+      const key = makeStaticByteArray(64);
+      const cryptoKey = new SymmetricCryptoKey(key);
+
+      expect(cryptoKey).toEqual({
+        encKey: key.slice(0, 32),
+        encKeyB64: "AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8=",
+        encType: 2,
+        key: key,
+        keyB64:
+          "AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIjJCUmJygpKissLS4vMDEyMzQ1Njc4OTo7PD0+Pw==",
+        macKey: key.slice(32, 64),
+        macKeyB64: "ICEiIyQlJicoKSorLC0uLzAxMjM0NTY3ODk6Ozw9Pj8=",
+      });
+    });
+
+    it("unknown length", () => {
+      const t = () => {
+        new SymmetricCryptoKey(makeStaticByteArray(30));
+      };
+
+      expect(t).toThrowError("Unable to determine encType.");
+    });
+  });
+
+  it("toJSON creates object for serialization", () => {
+    const key = new SymmetricCryptoKey(makeStaticByteArray(64).buffer);
+    const actual = key.toJSON();
+
+    const expected = { keyB64: key.keyB64 };
+
+    expect(actual).toEqual(expected);
+  });
+
+  it("fromJSON hydrates new object", () => {
+    const expected = new SymmetricCryptoKey(makeStaticByteArray(64).buffer);
+    const actual = SymmetricCryptoKey.fromJSON({ keyB64: expected.keyB64 });
+
+    expect(actual).toEqual(expected);
+    expect(actual).toBeInstanceOf(SymmetricCryptoKey);
+  });
+});