I still need to be convinced that more than 2048 bit RSA keys are required. There seems to be no rational reason to use longer keys. There have been no real br

I still need to be convinced that more than 2048 bit RSA keys are required. There seems to be no rational reason to use longer keys. There have been no real breakthroughs in breaking RSA for 15-20 years. So if you were playing the odds you would actually prefer RSA over systems invented more recently.