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I don't blame whomever down-voted this, I realize now it was a stupid question. In order to do this, first convert the Edwards curve to Montgomery form, then to Weierstrass form, per this thread. But, as the above thread explains, as well as CodesInChaos' comment, this will result in poor performance. Thanks to CodesInChaos for pointing me in the right ...


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Because RSA with 512 bits is considered insecure for a fair amount of time yet, and 512 bit RSA primes are already breakable on an average new desktop computer in several weeks. For any kind of asymmetric encryption that is supposed to be secure, I would suggest a key size of at least 2048 bits, better 4096. Only for keys like session keys that time out ...


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Your javascript library linked to has no restrictions on key size. Many libraries out there that implement RSA will have a restriction on the key size. This is to make sure developers are following best practices as if the key size is too small, the security of the cipher is completely blown. It looks like the Java library you are using won't let you use key ...



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