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diff --git a/lib/actions/upload-actions.js b/lib/actions/upload-actions.js
--- a/lib/actions/upload-actions.js
+++ b/lib/actions/upload-actions.js
@@ -22,6 +22,7 @@
import {
makeBlobServiceEndpointURL,
makeBlobServiceURI,
+ generateBlobHolder,
} from '../utils/blob-service.js';
import { getMessageForException } from '../utils/errors.js';
import {
@@ -169,7 +170,7 @@
const { uploadInput, callbacks, keyserverOrThreadID } = input;
const { encryptionKey, loop, dimensions, thumbHash, blobInput } =
uploadInput;
- const blobHolder = uuid.v4();
+ const blobHolder = await generateBlobHolder();
const blobHash = toBase64URL(uploadInput.blobHash);
const defaultHeaders = createDefaultHTTPRequestHeaders(authMetadata);
diff --git a/lib/utils/blob-service.js b/lib/utils/blob-service.js
--- a/lib/utils/blob-service.js
+++ b/lib/utils/blob-service.js
@@ -1,7 +1,10 @@
// @flow
import invariant from 'invariant';
+import uuid from 'uuid';
+import { toBase64URL } from './base64.js';
+import { getContentSigningKey } from './crypto-utils.js';
import { replacePathParams, type URLPathParams } from './url-utils.js';
import type { BlobServiceHTTPEndpoint } from '../facts/blob-service.js';
import blobServiceConfig from '../facts/blob-service.js';
@@ -50,11 +53,26 @@
});
}
+/**
+ * Generates random blob holder prefixed by current device ID
+ */
+async function generateBlobHolder(): Promise<string> {
+ const randomID = uuid.v4();
+ try {
+ const deviceID = await getContentSigningKey();
+ const urlSafeDeviceID = toBase64URL(deviceID);
+ return `${urlSafeDeviceID}:${randomID}`;
+ } catch {
+ return randomID;
+ }
+}
+
export {
makeBlobServiceURI,
isBlobServiceURI,
blobHashFromURI,
blobHashFromBlobServiceURI,
+ generateBlobHolder,
getBlobFetchableURL,
makeBlobServiceEndpointURL,
};

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