On Thu, 25 Feb 2021, RW wrote:
On Wed, 24 Feb 2021 18:37:42 -0800 (PST)
John Hardin wrote:
On Wed, 24 Feb 2021, Alan wrote:
After a little more research, a better regex for an obfuscated BTC
address is
/[13][ \-]([a-km-zA-HJ-NP-Z0-9][ \-]){25,32}[a-km-zA-HJ-NP-Z0-9]/
It might be worth adding = and _ to the obfuscating delimiters.
YMMV.
I've updated __BITCOIN_ID with -, = and _ obfuscations, which I
haven't seen myself yet.
Thanks!
Possibly
(?:[-_=\s][a-km-zA-HJ-NP-Z1-9]){25,34}|[a-km-zA-HJ-NP-Z1-9]{25,34})
should be
(?:[-_=\s]*[a-km-zA-HJ-NP-Z1-9]){25,34}
It's shorter and more general.
I'd prefer:
(?:[-_=\s]?[a-km-zA-HJ-NP-Z1-9]){25,34}
The reason I haven't is I have not seen a mixture yet - it's either all
spaced or not at all.
I'll take a look at that tonight when I have some time.
The more loose you get with matching obfuscation the greater the chance of
false positives. Consider, for example, the PGP key in my .sig (which has
a zero, but I'd wager there are PGP key signatures that look like
obfuscated bitcoin wallet addresses...)
Also, there's a limit to how complex the obfuscation can get before the
recipient can't (or won't) follow the instructions.
--
John Hardin KA7OHZ http://www.impsec.org/~jhardin/
jhar...@impsec.org pgpk -a jhar...@impsec.org
key: 0xB8732E79 -- 2D8C 34F4 6411 F507 136C AF76 D822 E6E6 B873 2E79
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