Some of my public posts, writeups, whatever..
as I don't have a blog or something similiar..
(not exhaustive)
- 2022-12-15: New signs of Satoshi? - Analysis why the signed message implying that Paul LeRoux being Satoshi could not have been created in 2009.
(Bitcoin, ECDSA, message signing, Bitcoin history)
- 2022-12-06: Twitter Thread: Explaining the off-by-one error in Bitcoin's difficulty adjustment algorithm
(Bitcoin, Bitcoin history)
- 2022-11-23: Comment: Shortly explaining BIP 16 activation logic (PR review)
(Bitcoin, BIP16, Bitcoin history)
- 2022-11-21: PullRequest message at bitcoinJ explaining BIP 137 message signing (PR adds SegWit signing support to bitcoinJ)
(Bitcoin, BIP137, ECDSA, message signing)
- 2022-04-28: The mystery around secp[nnn]k1 generation points :)
(Elliptic curves, ECDSA, tech history)
- 2021-10-28: Being guest in The Anita Posch show: Lightning – The Future of Payments
(Bitcoin, Lightning, Taproot, Schnorr, LNURL, Bolt12, ...)
- 2021-02-17: Talk about upcoming Bitcoin Taproot update
(german, Bitcoin, Taproot, Schnorr)
- 2021-02-05: Adding some infos to the awesome Falsehoods Programmers Believe About Bitcoin list of theborakompanioni :)
(Bitcoin, ECDSA, BIP32)
- 2020-11-05: PullRequest: explaining and fixing flawed TLS certificate pinning
(security, Java, Bitcoin ATMs)
- 2019-06-19: First technical view on "Libra": Short analysis of first published Libra sourcecode (aka "Facebook coin") to identify some key properties of the system
(Libra, crypto currency, software analysis)
- 2019-03-28: Written
for Coinfinity Blog: „FlyClient“: Neues Protokoll für effizientere Light Clients wurde vorgestellt
(german, Light Client, Bitcoin, Ethereum)
- 2019-03-02: Medium
response post about CREATE2 and contract code immutability
(Ethereum, CREATE2)
- 2019-02-27: Introduction
to Switch Commitments
(Cryptography, Mimblewimble, grin, switch commitments)
- 2019-02-26: Written
for Coinfinity Blog: Implikationen des Constantinople-Upgrades im Ethereum-Netzwerk
(german, Ethereum, Constantinople, CREATE2)
- 2019-01-23: PR rust-secp256k1-zkp: Adding
documentation on how the NUMS (nothing-up-my-sleeves) generator points for Pedersen and Switch Commitments have
been derived.
(elliptic curve cryptography, Mimblewimble, grin, switch commitments)
- 2018-06-27: Medium response
post regarding Atomic Swaps and secret size attack
(Cryptocurrencies, Atomic Swaps)
- 2018-06-25: Talk about Atomic Swaps at Blockchain Hub Graz Meetup
(Cryptocurrencies, Atomic Swaps)
- 2017-11-19: Checking EMV
banking card keys for ROCA vulnerability
(NFC, EMV banking cards, EMV key recovery, RSA ROCA vulnerability)
- 2016-11-24: Reverse
engineering: How Infrared is (not) working on LePro3
(Android system, hardware abstraction layer (HAL), infrared, Quickset SDK, reverse engineering)
- 2016-11-18: Reverse
engineering: Patch Android SmartcardService for use with SIM-card-based banking apps
(Open Mobile API, GSMA NFC Handset API requirements, Xposed, reverse engineering, Android)
- 2016-04-20: Learning: Fun
with a CardTAN Reader - Learning about CardTAN flickercode protocol, create custom message flickercodes
(german, NFC, EMV banking cards, flickercode, cardTAN)
- 2016-04-03: Hardware:
Serial console on ESCAM Ant QF605 camera
(Hardware hacking, Linux, serial console)
- 2016-01-06: Reverse
engineering: Override SIM Secure Element Access Control
(Open Mobile API, Global Platform, smart cards, ISO-7816-4, security, Xposed, reverse engineering, Android)
- 2015-12-13: NFC
Offhost routing to the UICC on the Nexus 5X and the Nexus 6P and answering myself
(NFC, Android system, SWP)
- 2015-10-18: Erklärung
OpenMobile API, SIM Alliance
(german, NFC, OpenMobile API, SWP)
- 2014-09-09: Learning:
Questions about [CryptoNote] transaction details
(CryptoNote, elliptic curve cryptography, Monero, cryptocurrencies)
- 2014-05-08: PullRequest at Mycelium Bitcoin wallet: import private keys from Bitcoin Wallet backup files
(Bitcoin, Android, cryptography)
- 2014-03-27: Explanation:
How receiving SMS works on Android and why there is (was) no sent-time
(Android system, SMS)
- 2014-01-03: Learning: Fun
with NFC - Auslesen der letzten Transaktionen einer Bankomatkarte per NFC,
and die Fortsetzung
(resulting in some press coverage in
Austria)
(german, NFC, EMV banking cards, ISO-7816-4, smart cards)
- 2013-12-17: Reverse
engineering: Android KitKat Card-Emulation catch-all AID Routing
(Android system, NFC Host card emulation (HCE), Xposed, smart cards, ISO-7816-4, reverse engineering)
- 2013-10-07: Learning:
Questions to get a understanding of Ripple's consensus algorithm
(Cryptocurrencies, Ripple, consensus algorithms)
- 2013-09-23: Reverse engineering:
Send raw SMS PDUs with Android
(Android system, SMS, Etsi GSM 03.40, SMS PDU, Xposed, reverse engineering)
- 2013-05-27: Short
answer in a thread, explaining mining pool shares
(Cryptocurrencies, Bitcoin, pool mining)
- 2010-01-24: Explanation:
How to configure Android's *internal* taskkiller
(Android system, memory management)
<-- Back to /