Such worries have mostly faded by now, though you will see some conservative people still preferring RSA. Keep in mind that the computational study of integer

Such worries have mostly faded by now, though you will see some conservative people still preferring RSA. Keep in mind that the computational study of integer factorization only started seriously in the 70s with CFRAC, making the "milennia" argument somewhat moot. There is a fascinating article by (among others) Neal Koblitz, one of the inventors of elliptic curve cryptography, which describes the history and development of ECC through the 80s, 90s, and 00s, and some of the worries that developed: https://eprint.iacr.org/2008/390 https://eprint.iacr.org/2008/390.