fix for py3k
fix for py3k

dstufft/cryptography,Hasimir/cryptography,kimvais/cryptography,Hasimir/cryptography,sholsapp/cryptography,Lukasa/cryptography,bwhmather/cryptography,Lukasa/cryptography,kimvais/cryptography,kimvais/cryptography,Ayrx/cryptography,Hasimir/cryptography,bwhmather/cryptography,kimvais/cryptography,skeuomorf/cryptography,sholsapp/cryptography,bwhmather/cryptography,glyph/cryptography,Ayrx/cryptography,dstufft/cryptography,Ayrx/cryptography,Ayrx/cryptography,dstufft/cryptography,Hasimir/cryptography,glyph/cryptography,skeuomorf/cryptography,skeuomorf/cryptography,skeuomorf/cryptography,sholsapp/cryptography,dstufft/cryptography,dstufft/cryptography,Lukasa/cryptography,bwhmather/cryptography,sholsapp/cryptography