PM-20532 - Add KM new SendPasswordService

libs/angular/src/services/jslib-services.module.ts

@@ -168,6 +168,7 @@ import {
   MasterPasswordServiceAbstraction,
 } from "@bitwarden/common/key-management/master-password/abstractions/master-password.service.abstraction";
 import { MasterPasswordService } from "@bitwarden/common/key-management/master-password/services/master-password.service";
+import { SendPasswordService } from "@bitwarden/common/key-management/sends/send-password.service";
 import {
   DefaultVaultTimeoutService,
   DefaultVaultTimeoutSettingsService,
@@ -1433,6 +1434,11 @@ const safeProviders: SafeProvider[] = [
     useExisting: NoopViewCacheService,
     deps: [],
   }),
+  safeProvider({
+    provide: SendPasswordService,
+    useClass: SendPasswordService,
+    deps: [CryptoFunctionServiceAbstraction],
+  }),
   safeProvider({
     provide: LoginComponentService,
     useClass: DefaultLoginComponentService,

libs/common/src/key-management/sends/send-password.service.ts

@@ -0,0 +1,41 @@
+import { Opaque } from "type-fest";
+
+import { Utils } from "../../platform/misc/utils";
+import { SEND_KDF_ITERATIONS } from "../../tools/send/send-kdf";
+import { CryptoFunctionService } from "../crypto/abstractions/crypto-function.service";
+
+// TODO: remove this comment:
+// Code taken from send access.component.ts load method.
+
+// TODO: add test file for this service.
+/**
+ * Represents an opaque hashed send password as a base64 encoded string.
+ */
+export type SendHashedPassword = Opaque<string, "SendHashedPassword">;
+
+/**
+ * Service for managing passwords for sends.
+ */
+export class SendPasswordService {
+  constructor(private cryptoFunctionService: CryptoFunctionService) {}
+
+  async hashPassword(password: string, keyMaterialUrlB64: string): Promise<SendHashedPassword> {
+    if (!password || !keyMaterialUrlB64) {
+      throw new Error("Password and key material URL base64 string are required.");
+    }
+
+    // Convert the key material URL base64 string to an array.
+    const keyMaterialArray = Utils.fromUrlB64ToArray(keyMaterialUrlB64);
+
+    // Derive a password hash using the key material.
+    const passwordHash = await this.cryptoFunctionService.pbkdf2(
+      password,
+      keyMaterialArray,
+      "sha256",
+      SEND_KDF_ITERATIONS,
+    );
+
+    // Convert the password hash to a base64 string and return as proper type
+    return Utils.fromBufferToB64(passwordHash) as SendHashedPassword;
+  }
+}