From 71c4f898ae3c66447a3a003f96b988b4e0a52f07 Mon Sep 17 00:00:00 2001 From: ClashTheBunny <> Date: Thu, 14 Mar 2013 15:51:07 +0000 Subject: [PATCH] make "convergence secret" point to Convergence Secret doc [Imported from Trac: page FAQ, version 87] --- FAQ.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/FAQ.md b/FAQ.md index 0e0cc60..457a3a8 100644 --- a/FAQ.md +++ b/FAQ.md @@ -109,7 +109,7 @@ A: The node ID is the secure hash of the SSL public key certificate of the node. **Q15: If upload the same file again and again, Tahoe-LAFS will return the same capability. How does Tahoe-LAFS identify that the client is same, when I upload files mutiple times, is it based on node ID?** -A: For immutable files this is true—the resulting capability will be the same each time you upload the same file contents. The capability is derived from two pieces of information: The content of the file and the "convergence secret". By default, the convergence secret is randomly generated by the node when it first starts up, then stored in the node's base directory (`~/.tahoe`) and re-used after that. So the same file content uploaded from the same node will always have the same cap string. Uploading the file from a different node with a different convergence secret would result in a different cap string—and in a second copy of the file's contents stored on the grid. If you want files you upload to converge (also known as "deduplicate") with files uploaded by someone else, just make sure you're using the same convergence secret as they are. +A: For immutable files this is true—the resulting capability will be the same each time you upload the same file contents. The capability is derived from two pieces of information: The content of the file and the "[convergence secret](https://tahoe-lafs.org/trac/tahoe-lafs/wiki/Convergence%20Secret)". By default, the convergence secret is randomly generated by the node when it first starts up, then stored in the node's base directory (`~/.tahoe`) and re-used after that. So the same file content uploaded from the same node will always have the same cap string. Uploading the file from a different node with a different convergence secret would result in a different cap string—and in a second copy of the file's contents stored on the grid. If you want files you upload to converge (also known as "deduplicate") with files uploaded by someone else, just make sure you're using the same convergence secret as they are. **Q15.1: Isn't deduplication dangerous? Can someone figure out whether or not I have a certain file?**