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[PM-4270] Individual cipher key encryption #278

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merged 2 commits into from
Nov 2, 2023
Merged

[PM-4270] Individual cipher key encryption #278

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dd33b1e
[PM-4270] Individual cipher key encryption
dani-garcia Oct 11, 2023
ff7d4b0
Fix PR comments
dani-garcia Nov 2, 2023
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28 changes: 28 additions & 0 deletions crates/bitwarden/src/vault/cipher/cipher.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,8 @@ pub struct Cipher {
pub folder_id: Option<Uuid>,
pub collection_ids: Vec<Uuid>,

pub key: Option<EncString>,
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pub name: EncString,
pub notes: Option<EncString>,

Expand Down Expand Up @@ -77,6 +79,8 @@ pub struct CipherView {
pub folder_id: Option<Uuid>,
pub collection_ids: Vec<Uuid>,

pub key: Option<EncString>,
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Do we want to expose the key in a view?

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If we want to encrypt it back with the same Key, yeah. Though I guess we can generate a new key each time we encrypt a CipherView into a Cipher, if we wanted.

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Makes sense, once the SDK has state we don't have to expose it though and can just look it up internally.

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Should we add a TODO or open a ticket for the future?


pub name: String,
pub notes: Option<String>,

Expand Down Expand Up @@ -131,11 +135,15 @@ pub struct CipherListView {

impl KeyEncryptable<Cipher> for CipherView {
fn encrypt_with_key(self, key: &SymmetricCryptoKey) -> Result<Cipher> {
let key_owned = Cipher::get_cipher_key(key, &self.key)?;
let key = key_owned.as_ref().unwrap_or(key);
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Ok(Cipher {
id: self.id,
organization_id: self.organization_id,
folder_id: self.folder_id,
collection_ids: self.collection_ids,
key: self.key,
name: self.name.encrypt_with_key(key)?,
notes: self.notes.encrypt_with_key(key)?,
r#type: self.r#type,
Expand All @@ -161,11 +169,15 @@ impl KeyEncryptable<Cipher> for CipherView {

impl KeyDecryptable<CipherView> for Cipher {
fn decrypt_with_key(&self, key: &SymmetricCryptoKey) -> Result<CipherView> {
let key_owned = Cipher::get_cipher_key(key, &self.key)?;
let key = key_owned.as_ref().unwrap_or(key);

Ok(CipherView {
id: self.id,
organization_id: self.organization_id,
folder_id: self.folder_id,
collection_ids: self.collection_ids.clone(),
key: self.key.clone(),
name: self.name.decrypt_with_key(key)?,
notes: self.notes.decrypt_with_key(key)?,
r#type: self.r#type,
Expand All @@ -190,6 +202,19 @@ impl KeyDecryptable<CipherView> for Cipher {
}

impl Cipher {
fn get_cipher_key(
key: &SymmetricCryptoKey,
inner_key: &Option<EncString>,
) -> Result<Option<SymmetricCryptoKey>> {
inner_key
.as_ref()
.map(|k| {
let key: Vec<u8> = k.decrypt_with_key(key)?;
SymmetricCryptoKey::try_from(key.as_slice())
})
.transpose()
}
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fn get_decrypted_subtitle(&self, key: &SymmetricCryptoKey) -> Result<String> {
Ok(match self.r#type {
CipherType::Login => {
Expand Down Expand Up @@ -257,6 +282,9 @@ impl Cipher {

impl KeyDecryptable<CipherListView> for Cipher {
fn decrypt_with_key(&self, key: &SymmetricCryptoKey) -> Result<CipherListView> {
let key_owned = Cipher::get_cipher_key(key, &self.key)?;
let key = key_owned.as_ref().unwrap_or(key);

Ok(CipherListView {
id: self.id,
organization_id: self.organization_id,
Expand Down