4096 bit keys

[Robert J. Hansen]

On 3/22/2011 6:53 PM, Grant Olson wrote:
> The actual cutting edge solution is to move from RSA to ECC.  Even a
> 8192 bit or 16k bit RSA key isn't approved by the NSA or NIST for TOP
> SECRET materials, but ECC-521 is.

Do you have a cite for that?  I know ECC is approved, but I've never
been able to find confirmation one way or another that ECC is the *only*
publicly-acknowledged asymmetric algorithm approved for TS.  Any
heads-up you could give would be appreciated.