A lack of entropy sources on some kinds of hardware is a real problem, and buggy attempts to work around it have resulted in defective, easily factorable keys b

A lack of entropy sources on some kinds of hardware is a real problem, and buggy attempts to work around it have resulted in defective, easily factorable keys being used in the wild on equipment like Juniper SRX gateways: https://factorable.net/weakkeys12.extended.pdf https://factorable.net/weakkeys12.extended.pdf