I beleive Justice Douglas made mention of this law in the Pentagon
Papers case as well, though the US did not bring this up in their case
agaisnt the Times & Post.
Declan McCullagh wrote:
>
> It would be one thing if this law (enacted in 1950) restricted government
> employees or contractors from disclosing cryptographic or COMINT info they
> agreed to keep secret. But it seems to apply to anyone, including
> journalists or cypherpunks, no matter how they obtained the data. That
> raises First Amendment issues.
>
> This was discussed during the Church committee hearings in 1975 (p7 of the
> transcript) but I don't know if it's come up in court cases.
>
> -Declan
>
> http://www4.law.cornell.edu/uscode/18/798.html
>
> Sec. 798. Disclosure of classified information [...]
