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Sebastian Falbesoner

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73 commits2 monitored projects23 candidates0 high-risk analyses
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libsecp256k1Bitcoin Core40 commits16 candidates0 high riskBitcoin CoreBitcoin Core33 commits7 candidates0 high risk
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Informational 20 AI analysisMessage 96 · Strong
BC Bitcoin Corelibsecp256k1 BitcoinCryptographic libraries

Merge bitcoin-core/secp256k1#1897: tests: check results before using outputs

This commit fixes test-suite bugs, not the cryptographic library itself. Several test cases were using outputs from functions without first checking whether those functions succeeded. In rare cases a failed setup step could leave a value t…

Test-only hardeningMissing return-value checks in test codePotential false-positive test passes on setup failure
687155dfby merge-script+21−218 files
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Informational 15 AI analysisMessage 45 · Thin
BC Bitcoin Corelibsecp256k1 BitcoinCryptographic libraries

release cleanup: bump version after 0.8.0

This commit is a routine post-release bookkeeping change. It bumps the project's version number from 0.8.0 to 0.8.1, marks the current code as an unreleased development snapshot, and updates the changelog accordingly. There are no code, cr…

78657bf2by Sebastian Falbesoner+8−53 files
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Informational 15 AI analysisMessage 45 · Thin
BC Bitcoin Corelibsecp256k1 BitcoinCryptographic libraries

release: prepare for 0.8.0

This commit is a routine release preparation for libsecp256k1 version 0.8.0. It only updates version numbers in build files (CMake and autotools) and finalizes the changelog. There are no code changes, no bug fixes, and no security-related…

5840c19bby Sebastian Falbesoner+15−113 files
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Informational 19 AI analysisMessage 73 · Adequate
BC Bitcoin Corelibsecp256k1 BitcoinCryptographic libraries

changelog: add entry for #1821

This is a documentation-only commit that adds a changelog entry describing a previous code fix. The fix corrected a function in the ellswift module so it now rejects secret keys that are greater than or equal to the curve order, matching i…

Changelog entry describes a prior behavior change in secret-key handlingOld behavior silently reduced out-of-range keys modulo the curve orderVendor explicitly states old behavior is not a security issue
2076b06aby Sebastian Falbesoner+3−01 file
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Informational 15 AI analysisMessage 53 · Thin
BC Bitcoin Corelibsecp256k1 BitcoinCryptographic libraries

changelog: add entry for #1859

This commit only adds a changelog entry describing a prior performance improvement (force-inlining field multiplication routines). It changes no source code, build scripts, or executable behavior. There is no security-relevant content in t…

51fc633eby Sebastian Falbesoner+1−01 file
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Informational 21 AI analysisMessage 71 · Adequate
BC Bitcoin Corelibsecp256k1 BitcoinCryptographic libraries

Remove deprecated `secp256k1_context_no_precomp` pointer

This commit removes an old, renamed pointer called secp256k1_context_no_precomp from the secp256k1 cryptographic library. It had been marked as deprecated for over three years and was only an alias for the newer secp256k1_context_static. T…

Removal of a deprecated public API symbolNo change to cryptographic logic, memory handling, or context semanticsPotential downstream build breakage for consumers still using the deprecated alias
bf435856by Sebastian Falbesoner+1−84 files
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Informational 19 AI analysisMessage 71 · Adequate
BC Bitcoin Corelibsecp256k1 BitcoinCryptographic libraries

Remove deprecated `secp256k1_schnorrsig_sign` alias

This commit removes an old, renamed function called secp256k1_schnorrsig_sign from the libsecp256k1 cryptographic library. It had been marked as deprecated for over three years and was simply an alias pointing to the newer secp256k1_schnor…

No security-relevant code change: only a deprecated alias and its test are removedNo memory safety, cryptographic, or input validation changesNo bug fix, vulnerability patch, or incident disclosure present in commit or references
e14756bdby Sebastian Falbesoner+4−194 files
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Informational 15 AI analysisMessage 81 · Strong
BC Bitcoin Corelibsecp256k1 BitcoinCryptographic libraries

changelog: add missing entries for #1777 and #1860

This commit only updates the project's changelog file. It adds release-note entries for two previously merged changes and tweaks an existing entry for consistency. No program code was modified, so it cannot introduce or fix a security vuln…

f52eb393by Sebastian Falbesoner+6−11 file
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Informational 15 AI analysisMessage 45 · Thin
BC Bitcoin Corelibsecp256k1 BitcoinCryptographic libraries

Add changelog entry for silentpayments module

This commit only adds a changelog entry describing a new 'silentpayments' feature that was already added to the project. It changes no code, no build files, and no configuration. There is no security issue in this commit itself.

d9ac2ee5by Sebastian Falbesoner+6−01 file
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Informational 15 AI analysisMessage 86 · Strong
BC Bitcoin Corelibsecp256k1 BitcoinCryptographic libraries

silentpayments: API docs and internal comment followups

This commit only updates documentation comments and an example error message in the silent payments module. It does not change any executable code, cryptographic calculations, or security behavior. The changes clarify when the output-creat…

0fa38f3dby Sebastian Falbesoner+24−223 files
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Low 26 AI analysisMessage 50 · Thin
BC Bitcoin Corelibsecp256k1 BitcoinCryptographic libraries

extrakeys: check invariant that x-only pubkeys have even Y

This commit adds a debug-only safety check inside a Bitcoin cryptography library. It verifies that when an x-only public key (a compressed public key format that omits the Y coordinate) is saved, the internal representation has an even Y v…

Defensive invariant assertion added under VERIFY macroX-only public key parity invariant enforcedNo functional code path change in non-VERIFY builds
89a54b5aby Sebastian Falbesoner+7−01 file
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Informational 15 AI analysisMessage 50 · Thin
BC Bitcoin Corelibsecp256k1 BitcoinCryptographic libraries

silentpayments: drop "shuffle outputs" recommendation from API docs

This commit only changes documentation comments in a header file. It removes a recommendation that callers shuffle transaction outputs before scanning, and instead clarifies that outputs should be passed in their original transaction order…

cea6d114by Sebastian Falbesoner+2−31 file
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Informational 15 AI analysisMessage 47 · Thin
BC Bitcoin Corelibsecp256k1 BitcoinCryptographic libraries

ci: enable silentpayments module

This commit only changes the project's continuous integration (CI) configuration. It adds the new 'silentpayments' module to the list of optional modules that are built and tested automatically. There are no changes to the actual cryptogra…

f27a2968by Sebastian Falbesoner+28−162 files
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Informational 15 AI analysisMessage 73 · Adequate
BC Bitcoin Corelibsecp256k1 BitcoinCryptographic libraries

silentpayments: skip slow benchmarks for low iters count (<= 2)

This change only adjusts benchmark tests for a new Bitcoin privacy feature (silent payments). It skips some slow benchmark cases when tests are run with very low iteration counts, such as in automated CI runs. It does not change any produc…

4aa16704by Sebastian Falbesoner+12−21 file
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Informational 15 AI analysisMessage 73 · Adequate
BC Bitcoin Corelibsecp256k1 BitcoinCryptographic libraries

silentpayments: optimize scanning by using batch inversion

This commit is a pure performance optimization for the silent payments scanning feature. It replaces many individual expensive math operations (modular inversions) with a batched version, making scanning roughly 2.5 times faster in the wor…

ca0136dcby Sebastian Falbesoner+46−231 file
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Informational 15 AI analysisMessage 68 · Adequate
BC Bitcoin Corelibsecp256k1 BitcoinCryptographic libraries

silentpayments: recipient label support

This commit adds new public API functions to the silentpayments module of libsecp256k1 to support recipient-side labels for BIP352 silent payments. It is a feature addition, not a security fix or vulnerability patch. There is no evidence i…

c83b6783by Sebastian Falbesoner+302−13 files
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Low 38 AI analysisMessage 73 · Adequate
BC Bitcoin Corelibsecp256k1 BitcoinCryptographic libraries

silentpayments: respect per-group recipients protocol limit (K_max=2323)

This commit fixes the libsecp256k1 Silent Payments implementation so it respects the protocol-defined maximum of 2,323 recipients that share the same scan public key. Previously, the code had a TODO warning about unbounded scanning that co…

Unbounded loop bounded to protocol limit to prevent quadratic scanning costSender-side enforcement prevents creating outputs recipients may not findNew public constant documents protocol limit (BIP-352 K_max=2323)
1c1b2753by Sebastian Falbesoner+85−53 files
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Informational 15 AI analysisMessage 62 · Adequate
BC Bitcoin Corelibsecp256k1 BitcoinCryptographic libraries

build: add skeleton for new silentpayments (BIP352) module

This commit is purely a build-system and header-file skeleton for a new Silent Payments (BIP352) module. It adds configuration options, dependency checks, and empty placeholder files, but contains no actual cryptographic code or implementa…

a93e696aby Sebastian Falbesoner+83−08 files
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Informational 15 AI analysisMessage 100 · Strong
BC Bitcoin CoreBitcoin Core BitcoinSupply chain

test: introduce NodeSigner, run feature_taproot.py without wallet compiled

This commit only changes Bitcoin Core's internal functional test code. It introduces a small test helper class called NodeSigner so that one specific test (feature_taproot.py) can run even when Bitcoin Core is compiled without its built-in…

91586f70by Sebastian Falbesoner+49−142 files
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Informational 15 AI analysisMessage 95 · Strong
BC Bitcoin CoreBitcoin Core BitcoinSupply chain

test: return full keypair from `getnewdestination` helper

This is a small test-only code cleanup. A helper function used only in Bitcoin Core's functional test suite now returns the full private/public key pair instead of just the public key, so that future tests can spend coins sent to a generat…

771200caby Sebastian Falbesoner+6−63 files
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