feat: Add existing file encryption, decryption and reecryption

These methods are useful when moving an existing file to a different
location, with a different encryption context.

Author: paultranvan

package.json

@@ -116,7 +116,7 @@
     "cozy-authentication": "2.8.3",
     "cozy-bar": "7.17.7",
     "cozy-ci": "0.4.1",
-    "cozy-client": "^29.0.1",
+    "cozy-client": "^29.1.0",
     "cozy-client-js": "0.19.0",
     "cozy-device-helper": "^2.1.0",
     "cozy-doctypes": "1.82.2",
@@ -130,7 +130,7 @@
     "cozy-scanner": "2.0.2",
     "cozy-scripts": "6.3.1",
     "cozy-sharing": "4.1.5",
-    "cozy-stack-client": "^29.0.0",
+    "cozy-stack-client": "^29.1.0",
     "cozy-ui": "^67.0.2",
     "date-fns": "1.30.1",
     "diacritics": "1.3.0",

src/drive/lib/encryption.js

@@ -60,10 +60,10 @@ export const createEncryptedDir = async (
 export const encryptAndUploadNewFile = async (
   client,
   vaultClient,
-  { file, encryptionKey, fileOptions }
+  { binary, encryptionKey, fileOptions }
 ) => {
   const { name, dirID, onUploadProgress } = fileOptions
-  const encryptedFile = await vaultClient.encryptFile(file, encryptionKey)
+  const encryptedFile = await vaultClient.encryptFile(binary, encryptionKey)
   const resp = await client
     .collection(DOCTYPE_FILES)
     .createFile(encryptedFile, {
@@ -75,6 +75,69 @@ export const encryptAndUploadNewFile = async (
   return resp.data
 }
 
+export const encryptAndUploadExistingFile = async (
+  client,
+  vaultClient,
+  { file, encryptionKey }
+) => {
+  const encryptedFile = await encryptFile(client, vaultClient, {
+    file,
+    encryptionKey
+  })
+
+  const attributes = {
+    ...file,
+    encrypted: true,
+    fileId: file._id,
+    data: encryptedFile
+  }
+  const resp = await client.save(attributes)
+  return resp.data
+}
+
+export const decryptAndUploadExistingFile = async (
+  client,
+  vaultClient,
+  { file, decryptionKey }
+) => {
+  const plaintextFile = await decryptFile(client, vaultClient, {
+    file,
+    decryptionKey
+  })
+
+  const attributes = {
+    ...file,
+    encrypted: false,
+    fileId: file._id,
+    data: plaintextFile
+  }
+  const resp = await client.save(attributes)
+  return resp.data
+}
+
+export const reencryptAndUploadExistingFile = async (
+  client,
+  vaultClient,
+  { file, encryptionKey, decryptionKey }
+) => {
+  const plaintextFile = await decryptFile(client, vaultClient, {
+    file,
+    decryptionKey
+  })
+  const reencryptedFile = await vaultClient.encryptFile(
+    plaintextFile,
+    encryptionKey
+  )
+  const attributes = {
+    ...file,
+    encrypted: true,
+    fileId: file._id,
+    data: reencryptedFile
+  }
+  const resp = await client.save(attributes)
+  return resp.data
+}
+
 const getBinaryFile = async (client, fileId) => {
   const resp = await client
     .collection(DOCTYPE_FILES)

src/drive/web/modules/upload/index.js

@@ -337,7 +337,7 @@ const uploadFile = async (client, file, dirID, options = {}) => {
     const fr = new FileReader()
     fr.onloadend = async () => {
       return encryptAndUploadNewFile(client, vaultClient, {
-        file: fr.result,
+        binary: fr.result,
         encryptionKey,
         fileOptions: {
           name: file.name,

yarn.lock

@@ -5993,6 +5993,30 @@ cozy-client@^29.0.1:
     sift "^6.0.0"
     url-search-params-polyfill "^8.0.0"
 
+cozy-client@^29.1.0:
+  version "29.1.0"
+  resolved "https://registry.yarnpkg.com/cozy-client/-/cozy-client-29.1.0.tgz#2852b260d0d619f4d106606d0464bf1ea7733cfa"
+  integrity sha512-CyPYEgzI0MrsEUWTLFFJS/Z4Fi9BieWFLTXYYzahTPATKoCuA1vfDIHWtMjuFVBDkikNghxbYZ463AD3IJHJpQ==
+  dependencies:
+    "@cozy/minilog" "1.0.0"
+    "@types/jest" "^26.0.20"
+    "@types/lodash" "^4.14.170"
+    btoa "^1.2.1"
+    cozy-stack-client "^29.1.0"
+    json-stable-stringify "^1.0.1"
+    lodash "^4.17.13"
+    microee "^0.0.6"
+    node-fetch "^2.6.1"
+    node-polyglot "2.4.2"
+    open "7.4.2"
+    prop-types "^15.6.2"
+    react-redux "^7.2.0"
+    redux "3 || 4"
+    redux-thunk "^2.3.0"
+    server-destroy "^1.0.1"
+    sift "^6.0.0"
+    url-search-params-polyfill "^8.0.0"
+
 cozy-device-helper@^1.12.0, cozy-device-helper@^1.13.2, cozy-device-helper@^1.16.1, cozy-device-helper@^1.17.0, cozy-device-helper@^1.7.5:
   version "1.17.0"
   resolved "https://registry.yarnpkg.com/cozy-device-helper/-/cozy-device-helper-1.17.0.tgz#fbce9737ea83c67969b2b173163b37299a36283c"
@@ -6249,6 +6273,15 @@ cozy-stack-client@^29.0.0:
     mime "^2.4.0"
     qs "^6.7.0"
 
+cozy-stack-client@^29.1.0:
+  version "29.1.0"
+  resolved "https://registry.yarnpkg.com/cozy-stack-client/-/cozy-stack-client-29.1.0.tgz#a101e164b45088560df828ff39e369cd9e5a5466"
+  integrity sha512-KxLTdGhqNFDX4TpstzuyROROTGkvvMy4sSiRS5yHir8hfudCuME6pyRIKTslTlMx/y7vjYqcInaEnrwlZP7zaA==
+  dependencies:
+    detect-node "^2.0.4"
+    mime "^2.4.0"
+    qs "^6.7.0"
+
 [email protected]:
   version "22.3.1"
   resolved "https://registry.yarnpkg.com/cozy-ui/-/cozy-ui-22.3.1.tgz#9bd22099255e88ab2a9694a8b18d21cde3f627f5"