diff --git a/libs/common/src/vault/abstractions/cipher-encryption.service.ts b/libs/common/src/vault/abstractions/cipher-encryption.service.ts
new file mode 100644
index 00000000000..3134664fc3c
--- /dev/null
+++ b/libs/common/src/vault/abstractions/cipher-encryption.service.ts
@@ -0,0 +1,20 @@
+import { SymmetricCryptoKey } from "@bitwarden/common/platform/models/domain/symmetric-crypto-key";
+import { UserId } from "@bitwarden/common/types/guid";
+import { Cipher } from "@bitwarden/common/vault/models/domain/cipher";
+import { CipherView } from "@bitwarden/common/vault/models/view/cipher.view";
+
+/**
+ * Service responsible for encrypting and decrypting ciphers.
+ */
+export abstract class CipherEncryptionService {
+  abstract encrypt(
+    cipher: CipherView,
+    userId: UserId,
+    keyForEncryption?: SymmetricCryptoKey,
+    keyForCipherKeyDecryption?: SymmetricCryptoKey,
+    originalCipher?: Cipher,
+  ): Promise<Cipher>;
+
+  abstract decrypt(cipher: Cipher, userId: UserId): Promise<CipherView>;
+  abstract decryptMany(ciphers: Cipher[], userId: UserId): Promise<CipherView[]>;
+}
diff --git a/libs/common/src/vault/services/default-cipher-encryption.service.ts b/libs/common/src/vault/services/default-cipher-encryption.service.ts
new file mode 100644
index 00000000000..0318cd00723
--- /dev/null
+++ b/libs/common/src/vault/services/default-cipher-encryption.service.ts
@@ -0,0 +1,70 @@
+import { firstValueFrom } from "rxjs";
+
+import { FeatureFlag } from "@bitwarden/common/enums/feature-flag.enum";
+import { BulkEncryptService } from "@bitwarden/common/key-management/crypto/abstractions/bulk-encrypt.service";
+import { EncryptService } from "@bitwarden/common/key-management/crypto/abstractions/encrypt.service";
+import { CipherEncryptionService } from "@bitwarden/common/vault/abstractions/cipher-encryption.service";
+import { KeyService } from "@bitwarden/key-management";
+
+import { ConfigService } from "../../platform/abstractions/config/config.service";
+import { SymmetricCryptoKey } from "../../platform/models/domain/symmetric-crypto-key";
+import { OrganizationId, UserId } from "../../types/guid";
+import { Cipher } from "../models/domain/cipher";
+import { CipherView } from "../models/view/cipher.view";
+
+export class DefaultCipherEncryptionService implements CipherEncryptionService {
+  constructor(
+    private encryptService: EncryptService,
+    private bulkEncryptService: BulkEncryptService,
+    private keyService: KeyService,
+    private configService: ConfigService,
+  ) {}
+
+  encrypt(
+    cipher: CipherView,
+    userId: UserId,
+    keyForEncryption?: SymmetricCryptoKey,
+    keyForCipherKeyDecryption?: SymmetricCryptoKey,
+    originalCipher?: Cipher,
+  ): Promise<Cipher> {
+    throw new Error("Method not implemented.");
+  }
+
+  async decryptMany(ciphers: Cipher[], userId: UserId): Promise<CipherView[]> {
+    const keys = await firstValueFrom(this.keyService.cipherDecryptionKeys$(userId, true));
+
+    if (keys == null || (keys.userKey == null && Object.keys(keys.orgKeys ?? {}).length === 0)) {
+      return [];
+    }
+
+    // Group ciphers by orgId or under 'null' for the user's ciphers
+    const grouped = ciphers.reduce(
+      (agg, c) => {
+        agg[c.organizationId as OrganizationId] ??= [];
+        agg[c.organizationId as OrganizationId].push(c);
+        return agg;
+      },
+      {} as Record<OrganizationId, Cipher[]>,
+    );
+
+    const allCipherViews = (
+      await Promise.all(
+        Object.entries(grouped).map(async ([orgId, groupedCiphers]) => {
+          const key = (keys.orgKeys ?? {})[orgId as OrganizationId] ?? keys.userKey;
+          if (await this.configService.getFeatureFlag(FeatureFlag.PM4154_BulkEncryptionService)) {
+            return await this.bulkEncryptService.decryptItems(groupedCiphers, key);
+          } else {
+            return await this.encryptService.decryptItems(groupedCiphers, key);
+          }
+        }),
+      )
+    ).flat();
+
+    return allCipherViews as CipherView[];
+  }
+
+  async decrypt(cipher: Cipher, userId: UserId): Promise<CipherView> {
+    const decrypted = await this.decryptMany([cipher], userId);
+    return decrypted[0];
+  }
+}