Crypt_DiffieHellman dependencies

http://pear.php.net/package/Crypt_DiffieHellman/download According to that, the only PHP Extension required is mbstring. Shouldn't 'bcmath or gmp' be listed as dependencies, as well?: http://cvs.php.net/viewvc.cgi/pear/Crypt_DiffieHellman/DiffieHellman/Math/BigInteger/ Also, it seems strange that Crypt_DiffieHellman would have its own implementation of Math_BigInteger when there's already a Math_BigInteger class in PEAR: http://pear.php.net/package/Math_BigInteger/ Using Crypt_DiffieHellman as precedent, the soon to be proposed OpenID library should have its own Crypt_DiffieHellman implementation, ignoring the existing implementation, and HTML_Progress2 and HTML_QuickForm_Livesearch should reimplement HTML_AJAX rather than using the existing implementation already in PEAR. Besides, using Math_BigInteger would eliminate the need to state 'bcmath or gmp' as dependencies.