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Boris Nagaev

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76 commits3 monitored projects16 candidates0 high-risk analyses
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btcdbtcsuite46 commits15 candidates0 high riskLNDLightning Labs24 commits1 candidates0 high riskrust-bitcoinRust Bitcoin6 commits0 candidates0 high risk
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Moderate 58 AI analysisMessage 45 · Thin
BT btcsuitebtcd BitcoinNode implementations

psbt: reject trailing final witness data

This change tightens how a Bitcoin PSBT library extracts final witness data when turning a partially-signed transaction into a finished transaction. Previously, extra bytes after the declared witness stack were silently ignored. Now the li…

strict parsing of serialized witness datarejection of trailing bytes in PSBT final script witnesspotential malleability / ambiguity reduction in PSBT extraction
468853e4by Boris Nagaev+13−91 file
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Low 38 AI analysisMessage 55 · Thin
BT btcsuitebtcd BitcoinNode implementations

psbt: test final witness trailing data rejection

This commit adds a new test to the btcd PSBT (Partially Signed Bitcoin Transaction) library. The test checks that when extracting a final Bitcoin transaction from a PSBT, the library rejects a final witness value that has extra trailing by…

Strict parsing of final witness data to reject malformed/trailing bytesPrevents creation of transactions with non-standard witness encodingTest-only commit implies behavior enforcement elsewhere in the codebase
c87168ebby Boris Nagaev+26−01 file
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Low 25 AI analysisMessage 80 · Strong
BT btcsuitebtcd BitcoinNode implementations

psbt: compact witness utxo scripts after parsing

This commit fixes a memory-usage issue, not a security vulnerability. When reading PSBT data, the code was keeping a pointer to a large 4 MiB internal memory block even for tiny scripts. The patch copies the small script into its own compa…

memory retention reductionno input validation changeno cryptographic change
b0ab66feby Boris Nagaev+10−12 files
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Low 46 AI analysisMessage 45 · Thin
BT btcsuitebtcd BitcoinNode implementations

psbt: parse witness utxo txouts strictly

This commit tightens how a Bitcoin-related library reads transaction outputs stored inside PSBT (Partially Signed Bitcoin Transaction) data. Previously, the code read the output value and script in a loose, hand-rolled way that ignored ext…

Strict canonical parsing of serialized transaction outputsRemoval of hand-rolled length handling that ignored script length byteAddition of full-consumption check on parsed witness UTXO data
b4c5cf16by Boris Nagaev+11−91 file
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Low 36 AI analysisMessage 45 · Thin
BT btcsuitebtcd BitcoinNode implementations

psbt: add reader exhaustion helper

This commit adds a new helper function to the PSBT (Partially Signed Bitcoin Transaction) package that checks whether a data reader still has leftover bytes after parsing. Leftover bytes could mean a malformed or malicious PSBT file was no…

New validation helper for trailing/leftover data in a binary parserLocated in PSBT parsing utilities, an area where malformed input handling mattersNo caller added in this commit, so defensive effect is not yet active
da5792a8by Boris Nagaev+25−01 file
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Moderate 51 AI analysisMessage 45 · Thin
BT btcsuitebtcd BitcoinNode implementations

psbt: reject trailing data in tx values

This change tightens how PSBT (Partially Signed Bitcoin Transaction) files are read. Previously, transaction-valued fields could contain extra bytes after the valid transaction data; now the parser rejects such trailing data. This prevents…

Strict parsing of serialized transaction fieldsRejection of trailing/padding bytes in PSBT transaction valuesPrevention of ambiguous or malleable PSBT parsing
f945179fby Boris Nagaev+26−63 files
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Informational 12 AI analysisMessage 55 · Thin
BT btcsuitebtcd BitcoinNode implementations

psbt: test trailing packet data rejection

This commit only adds a new test case. It does not change any production code. The test checks that the PSBT parser rejects files that have extra bytes after a valid PSBT packet. Because no code behavior is changed, this commit by itself d…

Test-only commitNo production code changesTests input-validation behavior (trailing data rejection)
0a1300ddby Boris Nagaev+16−01 file
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Low 28 AI analysisMessage 55 · Thin
BT btcsuitebtcd BitcoinNode implementations

psbt: test strict base64 packet decoding

This commit only adds new test code to check that the PSBT (Partially Signed Bitcoin Transaction) parser rejects malformed base64 input such as whitespace, bad padding, or extra bytes. It does not change the actual parser logic. The tests …

strict base64 decoding validationPSBT packet format hardeningrejection of non-canonical base64 input
0a33cceaby Boris Nagaev+56−01 file
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Low 49 AI analysisMessage 45 · Thin
BT btcsuitebtcd BitcoinNode implementations

psbt: reject trailing packet data

This change makes the PSBT (Partially Signed Bitcoin Transaction) parser reject files or data that have extra bytes after the end of a valid PSBT. Previously, extra trailing data was silently ignored, which could let an attacker hide malic…

Parser no longer ignores trailing bytesCould prevent smuggling of extra data inside PSBT containersCould prevent canonicalization attacks where different byte sequences parse to the same structure
d1de2bc3by Boris Nagaev+4−01 file
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Informational 12 AI analysisMessage 55 · Thin
BT btcsuitebtcd BitcoinNode implementations

psbt: test witness utxo txout strict parsing

This commit only adds new test code for the PSBT (Partially Signed Bitcoin Transaction) package. It does not change any production code. The tests verify that WitnessUtxo fields are parsed strictly and correctly, including rejecting extra …

Strict parsing tests for WitnessUtxo transaction outputsRejection of trailing data after serialized txOutCorrect handling of multi-byte CompactSize script lengths
40ad9117by Boris Nagaev+79−01 file
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Informational 12 AI analysisMessage 60 · Adequate
BT btcsuitebtcd BitcoinNode implementations

musig2: test partial signature short reads

This commit only adds a new unit test that checks whether the MuSig2 partial signature decoder correctly rejects empty or too-short inputs. It does not change any production code, so by itself it cannot introduce or fix a security vulnerab…

4a7a9feaby Boris Nagaev+21−01 file
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Low 46 AI analysisMessage 45 · Thin
BT btcsuitebtcd BitcoinNode implementations

psbt: decode base64 packets strictly

This change tightens how base64-encoded PSBT (Partially Signed Bitcoin Transaction) data is decoded. Previously, the decoder could silently ignore extra whitespace or unexpected characters in the base64 stream. Now it rejects anything that…

Strict input validation added for base64 decodingRejection of whitespace/newlines inside base64 payloadUse of strict base64 decoder to enforce RFC4648 padding rules
70e8ceb9by Boris Nagaev+28−51 file
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Informational 12 AI analysisMessage 55 · Thin
BT btcsuitebtcd BitcoinNode implementations

psbt: add strict tx value regression test

This commit only adds a new test file. It does not change any production code. The test checks that the PSBT parser rejects transaction fields that have extra trailing bytes. Because no actual parser logic is modified, this commit by itsel…

Regression test added for strict parsing of transaction-valued PSBT fieldsNo production code changes
0293b6e0by Boris Nagaev+117−01 file
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Low 48 AI analysisMessage 50 · Thin
BT btcsuitebtcd BitcoinNode implementations

musig2: return partial signature read errors

This commit fixes a bug in the MuSig2 multi-signature code where reading a partial signature from an input stream could fail silently. Previously, if the stream ended early or had a read error, the function would return 'no error' as if th…

Silent failure in cryptographic decode pathPartial signature scalar left uninitialized on read errorMuSig2 signing correctness dependency
63bc064dby Boris Nagaev+1−11 file
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