drewbug

drewbug / gist:4ed5dd02db4258e21f07

Created October 23, 2014 05:52

securityd notes

	In /System/Library/LaunchDaemons/com.apple.securityd.plist, this apparently won't keep pcscd alive forever:
	<array>
	<string>/usr/sbin/securityd</string>
	<string>-i</string>
	<string>-s</string>
	<string>on</string>
	</array>

	This is despite a comment in pcscmonitor.h that says it should "keep pcscd running at all times"
	Oh well.

drewbug / secdebug

Last active August 29, 2015 14:07

security framework debugging

	# trace debug-log macro
	sudo dtrace -qn 'security_debug*:::log { printf("[%s] %s\n", copyinstr(arg0), copyinstr(arg1)); }'

	# restart securityd
	sudo launchctl unload /System/Library/LaunchDaemons/com.apple.securityd.plist &&
	sudo launchctl load /System/Library/LaunchDaemons/com.apple.securityd.plist

drewbug / secp256k1

Last active August 29, 2015 14:07

ecc notes

	require 'openssl'

	ec = OpenSSL::PKey::EC.new('secp256k1')

	# ec.generate_key
	ec.private_key = "85BDCD4EF6319F9996D5499BD011E6094224CD1B9C87599E854F4E4EA408EFA6".to_i(16)

	ec.public_key = ec.group.generator.mul(ec.private_key)

drewbug / gist:4a2fa42790b79e4f3d35

Last active August 29, 2015 14:06

Android SDK Identification

	wget http://dl-ssl.google.com/android/repository/android-19_r01.zip
	unzip -p android-19_r01.zip android-*/build.prop \| grep "ro.build.id" \| tail -c+13
	# => KRT16L

	git clone https://github.com/android/platform_build; cd platform_build
	git log --oneline --all --no-abbrev --grep=KRT16L \| head -c40 \| xargs git describe
	# => android-4.4_r0.9