{"record":{"id":"b17ebd80e74db76b","repo":"nautechsystems/nautilus_trader","slug":"signed-transaction-payload-authentication-failed","errorCode":null,"errorMessage":"Signed transaction payload authentication failed","messagePattern":"Signed transaction payload authentication failed","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"critical","filePath":"crates/adapters/blockchain/src/execution/sealing.rs","lineNumber":206,"sourceCode":"        &self,\n        envelope: &[u8],\n        context: &PayloadContext,\n    ) -> anyhow::Result<Vec<u8>> {\n        validate_context(context, &self.deployment_id)?;\n        let parsed = parse_envelope(envelope)?;\n        let key = self.keys.get(&parsed.key_id).ok_or_else(|| {\n            anyhow::anyhow!(\n                \"Payload sealing key {} is not configured\",\n                hex::encode(parsed.key_id)\n            )\n        })?;\n        let aad = encode_aad(&parsed.key_id, context)?;\n        let nonce = Nonce::try_assume_unique_for_key(parsed.nonce)\n            .map_err(|_| anyhow::anyhow!(\"Signed transaction payload nonce is invalid\"))?;\n        let mut plaintext = parsed.ciphertext_and_tag.to_vec();\n        let plaintext_len = key\n            .open_in_place(nonce, Aad::from(aad), &mut plaintext)\n            .map_err(|_| anyhow::anyhow!(\"Signed transaction payload authentication failed\"))?\n            .len();\n        plaintext.truncate(plaintext_len);\n        anyhow::ensure!(\n            plaintext.len() <= MAX_SIGNED_TRANSACTION_BYTES,\n            \"Unsealed transaction payload is {} bytes, exceeding the {} byte limit\",\n            plaintext.len(),\n            MAX_SIGNED_TRANSACTION_BYTES\n        );\n        Ok(plaintext)\n    }\n}\n\npub(crate) fn authenticate_payload(\n    raw_transaction: &[u8],\n    intent: &ExecutionIntentRow,\n    hash: &ExecutionTransactionHashRow,\n    policy: PayloadPolicy,\n    deployment_id: &str,","sourceCodeStart":188,"sourceCodeEnd":224,"githubUrl":"https://github.com/nautechsystems/nautilus_trader/blob/18893faf8b356be3320add8de2f861b0b647cf06/crates/adapters/blockchain/src/execution/sealing.rs#L188-L224","documentation":"Thrown in `unseal` when AEAD `open_in_place` fails authentication: the ciphertext, nonce, or additional authenticated data (AAD) does not match what was sealed under the given key. The library treats this as a hard integrity failure and returns no plaintext.","triggerScenarios":"Calling `unseal` with a payload sealed under a different `PayloadContext` (different intent ID, nonce, chain ID, transaction hash, or deployment_id), or with tampered/corrupted ciphertext.","commonSituations":"Mismatched deployment_id after environment clones, replaying an envelope against a different intent's context, storage bit-rot, or using a wrong-but-present key ID collision after rotation.","solutions":["Verify the `PayloadContext` passed to `unseal` exactly matches the intent/transaction row the payload was sealed with (use `payload_context` to build it)","Confirm the deployment_id and key set match those used at seal time","If the envelope is corrupted, restore from backup or re-seal from the source transaction"],"exampleFix":"// before\nlet plaintext = sealer.unseal(&envelope, &other_intent_context)?;\n// after\nlet ctx = payload_context(&intent_row, &hash_row, DEPLOYMENT_ID)?;\nlet plaintext = sealer.unseal(&envelope, &ctx)?;","handlingStrategy":"try-catch","validationCode":"let ctx = payload_context(&intent_row, &hash_row, DEPLOYMENT_ID)?; // build context from the same rows used at seal time","typeGuard":null,"tryCatchPattern":"let plaintext = sealer.unseal(&envelope, &ctx).map_err(|e| {\n    e.context(format!(\n        \"unseal failed for intent {}; verify deployment_id and payload context match seal-time values\",\n        intent_row.id\n    ))\n})?;","preventionTips":["Always construct PayloadContext via payload_context from the same persisted rows used at seal time","Pin and propagate deployment_id consistently across environments","Treat any authentication failure as tampering or context mismatch — never retry blindly"],"tags":["crypto","authentication","aad","integrity"],"backgroundTag":"authentication-failed","analyzedSha":"18893faf8b356be3320add8de2f861b0b647cf06","analyzedAt":"2026-09-08T20:49:34.690Z","contentChangedAt":"2026-09-08T20:49:34.690Z","schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}