diff --git a/src/abstractions/api.service.ts b/src/abstractions/api.service.ts
index eba6d8582d..a1410c0fe3 100644
--- a/src/abstractions/api.service.ts
+++ b/src/abstractions/api.service.ts
@@ -1,6 +1,7 @@
 import { EnvironmentUrls } from '../models/domain/environmentUrls';
 
 import { CipherRequest } from '../models/request/cipherRequest';
+import { CipherShareRequest } from '../models/request/cipherShareRequest';
 import { FolderRequest } from '../models/request/folderRequest';
 import { ImportDirectoryRequest } from '../models/request/importDirectoryRequest';
 import { PasswordHintRequest } from '../models/request/passwordHintRequest';
@@ -15,6 +16,8 @@ import { IdentityTwoFactorResponse } from '../models/response/identityTwoFactorR
 import { ProfileResponse } from '../models/response/profileResponse';
 import { SyncResponse } from '../models/response/syncResponse';
 
+import { AttachmentView } from '../models/view/attachmentView';
+
 export abstract class ApiService {
     urlsSet: boolean;
     baseUrl: string;
@@ -34,8 +37,10 @@ export abstract class ApiService {
     deleteFolder: (id: string) => Promise<any>;
     postCipher: (request: CipherRequest) => Promise<CipherResponse>;
     putCipher: (id: string, request: CipherRequest) => Promise<CipherResponse>;
+    shareCipher: (id: string, request: CipherShareRequest) => Promise<any>;
     deleteCipher: (id: string) => Promise<any>;
     postCipherAttachment: (id: string, data: FormData) => Promise<CipherResponse>;
+    shareCipherAttachment: (id: string, attachmentId: string, data: FormData, organizationId: string) => Promise<any>;
     deleteCipherAttachment: (id: string, attachmentId: string) => Promise<any>;
     getSync: () => Promise<SyncResponse>;
     postImportDirectory: (organizationId: string, request: ImportDirectoryRequest) => Promise<any>;
diff --git a/src/abstractions/cipher.service.ts b/src/abstractions/cipher.service.ts
index 73ee81047c..d621443f1b 100644
--- a/src/abstractions/cipher.service.ts
+++ b/src/abstractions/cipher.service.ts
@@ -6,6 +6,7 @@ import { Cipher } from '../models/domain/cipher';
 import { Field } from '../models/domain/field';
 import { SymmetricCryptoKey } from '../models/domain/symmetricCryptoKey';
 
+import { AttachmentView } from '../models/view/attachmentView';
 import { CipherView } from '../models/view/cipherView';
 import { FieldView } from '../models/view/fieldView';
 
@@ -25,6 +26,9 @@ export abstract class CipherService {
     updateLastUsedDate: (id: string) => Promise<void>;
     saveNeverDomain: (domain: string) => Promise<void>;
     saveWithServer: (cipher: Cipher) => Promise<any>;
+    shareWithServer: (cipher: Cipher) => Promise<any>;
+    shareAttachmentWithServer: (attachmentView: AttachmentView, cipherId: string,
+        organizationId: string) => Promise<any>;
     saveAttachmentWithServer: (cipher: Cipher, unencryptedFile: any) => Promise<Cipher>;
     saveAttachmentRawWithServer: (cipher: Cipher, filename: string, data: ArrayBuffer) => Promise<Cipher>;
     upsert: (cipher: CipherData | CipherData[]) => Promise<any>;
diff --git a/src/models/data/attachmentData.ts b/src/models/data/attachmentData.ts
index 85aa452e1e..63b822174c 100644
--- a/src/models/data/attachmentData.ts
+++ b/src/models/data/attachmentData.ts
@@ -7,7 +7,10 @@ export class AttachmentData {
     size: number;
     sizeName: string;
 
-    constructor(response: AttachmentResponse) {
+    constructor(response?: AttachmentResponse) {
+        if (response == null) {
+            return;
+        }
         this.id = response.id;
         this.url = response.url;
         this.fileName = response.fileName;
diff --git a/src/models/data/cardData.ts b/src/models/data/cardData.ts
index 1a4edea4ea..d87c723158 100644
--- a/src/models/data/cardData.ts
+++ b/src/models/data/cardData.ts
@@ -8,7 +8,11 @@ export class CardData {
     expYear: string;
     code: string;
 
-    constructor(data: CardApi) {
+    constructor(data?: CardApi) {
+        if (data == null) {
+            return;
+        }
+
         this.cardholderName = data.cardholderName;
         this.brand = data.brand;
         this.number = data.number;
diff --git a/src/models/data/cipherData.ts b/src/models/data/cipherData.ts
index 1a76ed5c79..59a52fe53d 100644
--- a/src/models/data/cipherData.ts
+++ b/src/models/data/cipherData.ts
@@ -17,7 +17,7 @@ export class CipherData {
     edit: boolean;
     organizationUseTotp: boolean;
     favorite: boolean;
-    revisionDate: string;
+    revisionDate: Date;
     type: CipherType;
     sizeName: string;
     name: string;
@@ -30,7 +30,11 @@ export class CipherData {
     attachments?: AttachmentData[];
     collectionIds?: string[];
 
-    constructor(response: CipherResponse, userId: string, collectionIds?: string[]) {
+    constructor(response?: CipherResponse, userId?: string, collectionIds?: string[]) {
+        if (response == null) {
+            return;
+        }
+
         this.id = response.id;
         this.organizationId = response.organizationId;
         this.folderId = response.folderId;
diff --git a/src/models/data/fieldData.ts b/src/models/data/fieldData.ts
index 0632d7349d..d28d285b5c 100644
--- a/src/models/data/fieldData.ts
+++ b/src/models/data/fieldData.ts
@@ -7,7 +7,10 @@ export class FieldData {
     name: string;
     value: string;
 
-    constructor(response: FieldApi) {
+    constructor(response?: FieldApi) {
+        if (response == null) {
+            return;
+        }
         this.type = response.type;
         this.name = response.name;
         this.value = response.value;
diff --git a/src/models/data/identityData.ts b/src/models/data/identityData.ts
index d1ac84a7b2..50fff95785 100644
--- a/src/models/data/identityData.ts
+++ b/src/models/data/identityData.ts
@@ -20,7 +20,11 @@ export class IdentityData {
     passportNumber: string;
     licenseNumber: string;
 
-    constructor(data: IdentityApi) {
+    constructor(data?: IdentityApi) {
+        if (data == null) {
+            return;
+        }
+
         this.title = data.title;
         this.firstName = data.firstName;
         this.middleName = data.middleName;
diff --git a/src/models/data/loginData.ts b/src/models/data/loginData.ts
index f81e8e0897..a7d504e052 100644
--- a/src/models/data/loginData.ts
+++ b/src/models/data/loginData.ts
@@ -9,7 +9,11 @@ export class LoginData {
     password: string;
     totp: string;
 
-    constructor(data: LoginApi) {
+    constructor(data?: LoginApi) {
+        if (data == null) {
+            return;
+        }
+
         this.username = data.username;
         this.password = data.password;
         this.totp = data.totp;
diff --git a/src/models/data/loginUriData.ts b/src/models/data/loginUriData.ts
index 71ad8079c1..e696355c74 100644
--- a/src/models/data/loginUriData.ts
+++ b/src/models/data/loginUriData.ts
@@ -6,7 +6,10 @@ export class LoginUriData {
     uri: string;
     match: UriMatchType = null;
 
-    constructor(data: LoginUriApi) {
+    constructor(data?: LoginUriApi) {
+        if (data == null) {
+            return;
+        }
         this.uri = data.uri;
         this.match = data.match;
     }
diff --git a/src/models/data/secureNoteData.ts b/src/models/data/secureNoteData.ts
index a508c1b31d..4a24f2cf86 100644
--- a/src/models/data/secureNoteData.ts
+++ b/src/models/data/secureNoteData.ts
@@ -5,7 +5,11 @@ import { SecureNoteApi } from '../api/secureNoteApi';
 export class SecureNoteData {
     type: SecureNoteType;
 
-    constructor(data: SecureNoteApi) {
+    constructor(data?: SecureNoteApi) {
+        if (data == null) {
+            return;
+        }
+
         this.type = data.type;
     }
 }
diff --git a/src/models/domain/attachment.ts b/src/models/domain/attachment.ts
index 7861066e0e..be345ce72f 100644
--- a/src/models/domain/attachment.ts
+++ b/src/models/domain/attachment.ts
@@ -32,4 +32,15 @@ export class Attachment extends Domain {
             fileName: null,
         }, orgId);
     }
+
+    toAttachmentData(): AttachmentData {
+        const a = new AttachmentData();
+        this.buildDataModel(this, a, {
+            id: null,
+            url: null,
+            sizeName: null,
+            fileName: null,
+        }, ['id', 'url', 'sizeName']);
+        return a;
+    }
 }
diff --git a/src/models/domain/card.ts b/src/models/domain/card.ts
index 19a2ad9e50..a9a4791274 100644
--- a/src/models/domain/card.ts
+++ b/src/models/domain/card.ts
@@ -39,4 +39,17 @@ export class Card extends Domain {
             code: null,
         }, orgId);
     }
+
+    toCardData(): CardData {
+        const c = new CardData();
+        this.buildDataModel(this, c, {
+            cardholderName: null,
+            brand: null,
+            number: null,
+            expMonth: null,
+            expYear: null,
+            code: null,
+        });
+        return c;
+    }
 }
diff --git a/src/models/domain/cipher.ts b/src/models/domain/cipher.ts
index 7f9c18d1f0..ad5cd75587 100644
--- a/src/models/domain/cipher.ts
+++ b/src/models/domain/cipher.ts
@@ -23,6 +23,7 @@ export class Cipher extends Domain {
     favorite: boolean;
     organizationUseTotp: boolean;
     edit: boolean;
+    revisionDate: Date;
     localData: any;
     login: Login;
     identity: Identity;
@@ -40,16 +41,18 @@ export class Cipher extends Domain {
 
         this.buildDomainModel(this, obj, {
             id: null,
+            userId: null,
             organizationId: null,
             folderId: null,
             name: null,
             notes: null,
-        }, alreadyEncrypted, ['id', 'organizationId', 'folderId']);
+        }, alreadyEncrypted, ['id', 'userId', 'organizationId', 'folderId']);
 
         this.type = obj.type;
         this.favorite = obj.favorite;
         this.organizationUseTotp = obj.organizationUseTotp;
         this.edit = obj.edit;
+        this.revisionDate = obj.revisionDate;
         this.collectionIds = obj.collectionIds;
         this.localData = localData;
 
@@ -142,4 +145,55 @@ export class Cipher extends Domain {
 
         return model;
     }
+
+    toCipherData(userId: string): CipherData {
+        const c = new CipherData();
+        c.id = this.id;
+        c.organizationId = this.organizationId;
+        c.folderId = this.folderId;
+        c.userId = this.organizationId != null ? userId : null;
+        c.edit = this.edit;
+        c.organizationUseTotp = this.organizationUseTotp;
+        c.favorite = this.favorite;
+        c.revisionDate = this.revisionDate;
+        c.type = this.type;
+        c.collectionIds = this.collectionIds;
+
+        this.buildDataModel(this, c, {
+            name: null,
+            notes: null,
+        });
+
+        switch (c.type) {
+            case CipherType.Login:
+                c.login = this.login.toLoginData();
+                break;
+            case CipherType.SecureNote:
+                c.secureNote = this.secureNote.toSecureNoteData();
+                break;
+            case CipherType.Card:
+                c.card = this.card.toCardData();
+                break;
+            case CipherType.Identity:
+                c.identity = this.identity.toIdentityData();
+                break;
+            default:
+                break;
+        }
+
+        if (this.fields != null) {
+            c.fields = [];
+            this.fields.forEach((field) => {
+                c.fields.push(field.toFieldData());
+            });
+        }
+
+        if (this.attachments != null) {
+            c.attachments = [];
+            this.attachments.forEach((attachment) => {
+                c.attachments.push(attachment.toAttachmentData());
+            });
+        }
+        return c;
+    }
 }
diff --git a/src/models/domain/domain.ts b/src/models/domain/domain.ts
index 7fe644740f..8eed0f5699 100644
--- a/src/models/domain/domain.ts
+++ b/src/models/domain/domain.ts
@@ -18,6 +18,20 @@ export default abstract class Domain {
             }
         }
     }
+    protected buildDataModel<D extends Domain>(domain: D, dataObj: any, map: any, notCipherStringList: any[] = []) {
+        for (const prop in map) {
+            if (!map.hasOwnProperty(prop)) {
+                continue;
+            }
+
+            const objProp = (domain as any)[(map[prop] || prop)];
+            if (notCipherStringList.indexOf(prop) > -1) {
+                (dataObj as any)[prop] = objProp != null ? objProp : null;
+            } else {
+                (dataObj as any)[prop] = objProp != null ? (objProp as CipherString).encryptedString : null;
+            }
+        }
+    }
 
     protected async decryptObj<T extends View>(viewModel: T, map: any, orgId: string): Promise<T> {
         const promises = [];
diff --git a/src/models/domain/field.ts b/src/models/domain/field.ts
index 599dabff1c..82a884c849 100644
--- a/src/models/domain/field.ts
+++ b/src/models/domain/field.ts
@@ -31,4 +31,14 @@ export class Field extends Domain {
             value: null,
         }, orgId);
     }
+
+    toFieldData(): FieldData {
+        const f = new FieldData();
+        this.buildDataModel(this, f, {
+            name: null,
+            value: null,
+            type: null,
+        }, ['type']);
+        return f;
+    }
 }
diff --git a/src/models/domain/identity.ts b/src/models/domain/identity.ts
index ade03260ea..266d697579 100644
--- a/src/models/domain/identity.ts
+++ b/src/models/domain/identity.ts
@@ -75,4 +75,29 @@ export class Identity extends Domain {
             licenseNumber: null,
         }, orgId);
     }
+
+    toIdentityData(): IdentityData {
+        const i = new IdentityData();
+        this.buildDataModel(this, i, {
+            title: null,
+            firstName: null,
+            middleName: null,
+            lastName: null,
+            address1: null,
+            address2: null,
+            address3: null,
+            city: null,
+            state: null,
+            postalCode: null,
+            country: null,
+            company: null,
+            email: null,
+            phone: null,
+            ssn: null,
+            username: null,
+            passportNumber: null,
+            licenseNumber: null,
+        });
+        return i;
+    }
 }
diff --git a/src/models/domain/login.ts b/src/models/domain/login.ts
index 211a371069..3d81b0eb09 100644
--- a/src/models/domain/login.ts
+++ b/src/models/domain/login.ts
@@ -51,4 +51,22 @@ export class Login extends Domain {
 
         return view;
     }
+
+    toLoginData(): LoginData {
+        const l = new LoginData();
+        this.buildDataModel(this, l, {
+            username: null,
+            password: null,
+            totp: null,
+        });
+
+        if (this.uris != null && this.uris.length > 0) {
+            l.uris = [];
+            this.uris.forEach((u) => {
+                l.uris.push(u.toLoginUriData());
+            });
+        }
+
+        return l;
+    }
 }
diff --git a/src/models/domain/loginUri.ts b/src/models/domain/loginUri.ts
index 0cb6b19a7f..1e1d9a93fc 100644
--- a/src/models/domain/loginUri.ts
+++ b/src/models/domain/loginUri.ts
@@ -28,4 +28,12 @@ export class LoginUri extends Domain {
             uri: null,
         }, orgId);
     }
+
+    toLoginUriData(): LoginUriData {
+        const u = new LoginUriData();
+        this.buildDataModel(this, u, {
+            uri: null,
+        }, ['match']);
+        return u;
+    }
 }
diff --git a/src/models/domain/secureNote.ts b/src/models/domain/secureNote.ts
index 79724a4193..52988f1b25 100644
--- a/src/models/domain/secureNote.ts
+++ b/src/models/domain/secureNote.ts
@@ -21,4 +21,10 @@ export class SecureNote extends Domain {
     decrypt(orgId: string): Promise<SecureNoteView> {
         return Promise.resolve(new SecureNoteView(this));
     }
+
+    toSecureNoteData(): SecureNoteData {
+        const n = new SecureNoteData();
+        n.type = this.type;
+        return n;
+    }
 }
diff --git a/src/models/request/cipherBulkDeleteRequest.ts b/src/models/request/cipherBulkDeleteRequest.ts
new file mode 100644
index 0000000000..ccdf8ed22b
--- /dev/null
+++ b/src/models/request/cipherBulkDeleteRequest.ts
@@ -0,0 +1,7 @@
+export class CipherBulkDeleteRequest {
+    ids: string[];
+
+    constructor(ids: string[]) {
+        this.ids = ids;
+    }
+}
diff --git a/src/models/request/cipherBulkMoveRequest.ts b/src/models/request/cipherBulkMoveRequest.ts
new file mode 100644
index 0000000000..0d78e4f165
--- /dev/null
+++ b/src/models/request/cipherBulkMoveRequest.ts
@@ -0,0 +1,9 @@
+export class CipherBulkMoveRequest {
+    ids: string[];
+    folderId: string;
+
+    constructor(ids: string[], folderId: string) {
+        this.ids = ids;
+        this.folderId = folderId;
+    }
+}
diff --git a/src/models/request/cipherCollectionsRequest.ts b/src/models/request/cipherCollectionsRequest.ts
new file mode 100644
index 0000000000..14718e2308
--- /dev/null
+++ b/src/models/request/cipherCollectionsRequest.ts
@@ -0,0 +1,7 @@
+export class CipherCollectionsRequest {
+    collectionIds: string[];
+
+    constructor(collectionIds: string[]) {
+        this.collectionIds = collectionIds;
+    }
+}
diff --git a/src/models/request/cipherRequest.ts b/src/models/request/cipherRequest.ts
index a608cecb7a..a4d478c81f 100644
--- a/src/models/request/cipherRequest.ts
+++ b/src/models/request/cipherRequest.ts
@@ -21,6 +21,7 @@ export class CipherRequest {
     card: CardApi;
     identity: IdentityApi;
     fields: FieldApi[];
+    attachments: { [id: string]: string; };
 
     constructor(cipher: Cipher) {
         this.type = cipher.type;
@@ -101,5 +102,12 @@ export class CipherRequest {
                 });
             });
         }
+
+        if (cipher.attachments) {
+            this.attachments = {};
+            cipher.attachments.forEach((attachment) => {
+                this.attachments[attachment.id] = attachment.fileName ? attachment.fileName.encryptedString : null;
+            });
+        }
     }
 }
diff --git a/src/models/request/cipherShareRequest.ts b/src/models/request/cipherShareRequest.ts
new file mode 100644
index 0000000000..4646890254
--- /dev/null
+++ b/src/models/request/cipherShareRequest.ts
@@ -0,0 +1,13 @@
+import { CipherRequest } from './cipherRequest';
+
+import { Cipher } from '../domain/cipher';
+
+export class CipherShareRequest {
+    cipher: CipherRequest;
+    collectionIds: string[];
+
+    constructor(cipher: Cipher) {
+        this.cipher = new CipherRequest(cipher);
+        this.collectionIds = cipher.collectionIds;
+    }
+}
diff --git a/src/models/response/cipherResponse.ts b/src/models/response/cipherResponse.ts
index c8ed70ffd0..61c8907310 100644
--- a/src/models/response/cipherResponse.ts
+++ b/src/models/response/cipherResponse.ts
@@ -21,7 +21,7 @@ export class CipherResponse {
     favorite: boolean;
     edit: boolean;
     organizationUseTotp: boolean;
-    revisionDate: string;
+    revisionDate: Date;
     attachments: AttachmentResponse[];
     collectionIds: string[];
 
@@ -35,7 +35,7 @@ export class CipherResponse {
         this.favorite = response.Favorite;
         this.edit = response.Edit;
         this.organizationUseTotp = response.OrganizationUseTotp;
-        this.revisionDate = response.RevisionDate;
+        this.revisionDate = new Date(response.RevisionDate);
 
         if (response.Login != null) {
             this.login = new LoginApi(response.Login);
diff --git a/src/services/api.service.ts b/src/services/api.service.ts
index 5a512c4509..806ffb151c 100644
--- a/src/services/api.service.ts
+++ b/src/services/api.service.ts
@@ -7,6 +7,7 @@ import { TokenService } from '../abstractions/token.service';
 import { EnvironmentUrls } from '../models/domain/environmentUrls';
 
 import { CipherRequest } from '../models/request/cipherRequest';
+import { CipherShareRequest } from '../models/request/cipherShareRequest';
 import { FolderRequest } from '../models/request/folderRequest';
 import { ImportDirectoryRequest } from '../models/request/importDirectoryRequest';
 import { PasswordHintRequest } from '../models/request/passwordHintRequest';
@@ -334,6 +335,27 @@ export class ApiService implements ApiServiceAbstraction {
         }
     }
 
+    async shareCipher(id: string, request: CipherShareRequest): Promise<any> {
+        const authHeader = await this.handleTokenState();
+        const response = await fetch(new Request(this.baseUrl + '/ciphers/' + id + '/share', {
+            body: JSON.stringify(request),
+            cache: 'no-cache',
+            credentials: this.getCredentials(),
+            headers: new Headers({
+                'Accept': 'application/json',
+                'Authorization': authHeader,
+                'Content-Type': 'application/json; charset=utf-8',
+                'Device-Type': this.deviceType,
+            }),
+            method: 'PUT',
+        }));
+
+        if (response.status !== 200) {
+            const error = await this.handleError(response, false);
+            return Promise.reject(error);
+        }
+    }
+
     async deleteCipher(id: string): Promise<any> {
         const authHeader = await this.handleTokenState();
         const response = await fetch(new Request(this.baseUrl + '/ciphers/' + id, {
@@ -377,6 +399,28 @@ export class ApiService implements ApiServiceAbstraction {
         }
     }
 
+    async shareCipherAttachment(id: string, attachmentId: string, data: FormData,
+        organizationId: string): Promise<any> {
+        const authHeader = await this.handleTokenState();
+        const response = await fetch(new Request(this.baseUrl + '/ciphers/' + id + '/attachment/' +
+            attachmentId + '/share?organizationId=' + organizationId, {
+                body: data,
+                cache: 'no-cache',
+                credentials: this.getCredentials(),
+                headers: new Headers({
+                    'Accept': 'application/json',
+                    'Authorization': authHeader,
+                    'Device-Type': this.deviceType,
+                }),
+                method: 'POST',
+            }));
+
+        if (response.status !== 200) {
+            const error = await this.handleError(response, false);
+            return Promise.reject(error);
+        }
+    }
+
     async deleteCipherAttachment(id: string, attachmentId: string): Promise<any> {
         const authHeader = await this.handleTokenState();
         const response = await fetch(new Request(this.baseUrl + '/ciphers/' + id + '/attachment/' + attachmentId, {
diff --git a/src/services/cipher.service.ts b/src/services/cipher.service.ts
index 45b2b93e99..6c89d23141 100644
--- a/src/services/cipher.service.ts
+++ b/src/services/cipher.service.ts
@@ -3,6 +3,7 @@ import { UriMatchType } from '../enums/uriMatchType';
 
 import { CipherData } from '../models/data/cipherData';
 
+import { Attachment } from '../models/domain/attachment';
 import { Card } from '../models/domain/card';
 import { Cipher } from '../models/domain/cipher';
 import { CipherString } from '../models/domain/cipherString';
@@ -19,6 +20,7 @@ import { CipherRequest } from '../models/request/cipherRequest';
 import { CipherResponse } from '../models/response/cipherResponse';
 import { ErrorResponse } from '../models/response/errorResponse';
 
+import { AttachmentView } from '../models/view/attachmentView';
 import { CardView } from '../models/view/cardView';
 import { CipherView } from '../models/view/cipherView';
 import { FieldView } from '../models/view/fieldView';
@@ -38,6 +40,7 @@ import { StorageService } from '../abstractions/storage.service';
 import { UserService } from '../abstractions/user.service';
 
 import { Utils } from '../misc/utils';
+import { CipherShareRequest } from '../models/request/cipherShareRequest';
 
 const Keys = {
     ciphersPrefix: 'ciphers_',
@@ -77,11 +80,39 @@ export class CipherService implements CipherServiceAbstraction {
             this.encryptFields(model.fields, key).then((fields) => {
                 cipher.fields = fields;
             }),
+            this.encryptAttachments(model.attachments, key).then((attachments) => {
+                cipher.attachments = attachments;
+            }),
         ]);
 
         return cipher;
     }
 
+    async encryptAttachments(attachmentsModel: AttachmentView[], key: SymmetricCryptoKey): Promise<Attachment[]> {
+        if (attachmentsModel == null || attachmentsModel.length === 0) {
+            return null;
+        }
+
+        const promises: Array<Promise<any>> = [];
+        const encAttachments: Attachment[] = [];
+        attachmentsModel.forEach(async (model) => {
+            const attachment = new Attachment();
+            attachment.id = model.id;
+            attachment.size = model.size;
+            attachment.sizeName = model.sizeName;
+            attachment.url = model.url;
+            const promise = this.encryptObjProperty(model, attachment, {
+                fileName: null,
+            }, key).then(() => {
+                encAttachments.push(attachment);
+            });
+            promises.push(promise);
+        });
+
+        await Promise.all(promises);
+        return encAttachments;
+    }
+
     async encryptFields(fieldsModel: FieldView[], key: SymmetricCryptoKey): Promise<Field[]> {
         if (!fieldsModel || !fieldsModel.length) {
             return null;
@@ -324,6 +355,49 @@ export class CipherService implements CipherServiceAbstraction {
         await this.upsert(data);
     }
 
+    async shareWithServer(cipher: Cipher): Promise<any> {
+        const request = new CipherShareRequest(cipher);
+        await this.apiService.shareCipher(cipher.id, request);
+        const userId = await this.userService.getUserId();
+        await this.upsert(cipher.toCipherData(userId));
+    }
+
+    async shareAttachmentWithServer(attachmentView: AttachmentView, cipherId: string,
+        organizationId: string): Promise<any> {
+        const attachmentResponse = await fetch(new Request(attachmentView.url, { cache: 'no-cache' }));
+        if (attachmentResponse.status !== 200) {
+            throw Error('Failed to download attachment: ' + attachmentResponse.status.toString());
+        }
+
+        const buf = await attachmentResponse.arrayBuffer();
+        const decBuf = await this.cryptoService.decryptFromBytes(buf, null);
+        const key = await this.cryptoService.getOrgKey(organizationId);
+        const encData = await this.cryptoService.encryptToBytes(decBuf, key);
+        const encFileName = await this.cryptoService.encrypt(attachmentView.fileName, key);
+
+        const fd = new FormData();
+        try {
+            const blob = new Blob([encData], { type: 'application/octet-stream' });
+            fd.append('data', blob, encFileName.encryptedString);
+        } catch (e) {
+            if (Utils.isNode && !Utils.isBrowser) {
+                fd.append('data', new Buffer(encData) as any, {
+                    filepath: encFileName.encryptedString,
+                    contentType: 'application/octet-stream',
+                } as any);
+            } else {
+                throw e;
+            }
+        }
+
+        let response: CipherResponse;
+        try {
+            response = await this.apiService.shareCipherAttachment(cipherId, attachmentView.id, fd, organizationId);
+        } catch (e) {
+            throw new Error((e as ErrorResponse).getSingleMessage());
+        }
+    }
+
     saveAttachmentWithServer(cipher: Cipher, unencryptedFile: any): Promise<Cipher> {
         return new Promise((resolve, reject) => {
             const reader = new FileReader();