pumpkin:bin pumpkin$ md5 `which codesign`
MD5 (/usr/bin/codesign) = 7d2520bd03bc420c7a16355ebf2ae354
pumpkin:bin pumpkin$ md5 `which codesign_allocate`
MD5 (/usr/bin/codesign_allocate) = e4b33aa96544acd93932566715cffe8a
pumpkin:bin pumpkin$ md5 /Developer/Platforms/iPhone
iPhoneOS.platform/        iPhoneSimulator.platform/
pumpkin:bin pumpkin$ md5 /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/codesign_allocate
MD5 (/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/codesign_allocate) = e4b33aa96544acd93932566715cffe8a
pumpkin:bin pumpkin$ md5 /System/Library/Frameworks/Security.framework/Security
MD5 (/System/Library/Frameworks/Security.framework/Security) = fd2ed9e59255ba3b7c1ef1b745280883