Attack by using a nonce multiple times #11

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Benjamin_Loison · 2023-06-08T14:06:53+02:00

Benjamin_Loison commented

2023-06-08 14:06:53 +02:00

diff --git a/prover.py b/prover.py
index cb4c647..0fde5b2 100755
--- a/prover.py
+++ b/prover.py
@@ -24,7 +24,7 @@ while len(STORED_NONCES) < common.ENTRIES_NUMBER:
     hashed = common.hash(protocolInitializationPhaseId + str(counter))
     if common.doesHashMatchDifficulty(hashed):
         deltaCounter = counter - lastCounter
-        STORED_NONCES += [deltaCounter]
+        STORED_NONCES = [deltaCounter] + ([0] * (common.ENTRIES_NUMBER - 1))
         lastCounter = counter
         print(len(STORED_NONCES), common.ENTRIES_NUMBER, file=sys.stderr)
     counter += 1

```diff diff --git a/prover.py b/prover.py index cb4c647..0fde5b2 100755 --- a/prover.py +++ b/prover.py @@ -24,7 +24,7 @@ while len(STORED_NONCES) < common.ENTRIES_NUMBER: hashed = common.hash(protocolInitializationPhaseId + str(counter)) if common.doesHashMatchDifficulty(hashed): deltaCounter = counter - lastCounter - STORED_NONCES += [deltaCounter] + STORED_NONCES = [deltaCounter] + ([0] * (common.ENTRIES_NUMBER - 1)) lastCounter = counter print(len(STORED_NONCES), common.ENTRIES_NUMBER, file=sys.stderr) counter += 1 ```

Benjamin_Loison changed title from ~~Attack by using identical nonce~~ to Attack by using a nonce multiple times

2023-06-08 14:10:49 +02:00

Benjamin_Loison referenced this issue from a commit

2023-06-08 14:11:10 +02:00

Fix #11: Attack by using a nonce multiple times

Benjamin_Loison closed this issue

2023-06-08 14:11:10 +02:00

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