[U-Boot] Secure booting

[Simon Glass]

Hi,

On 13 February 2014 00:42, JYOTI DUBEY <jyoti0801 at gmail.com> wrote:
> Can I obtain information as how secure booting works.How the keys and
> certificates are generated and also encryption and decryption steps
> involved in the authentication process. i would like to know just the
> theory behind it not and commands or technical details.
> I have attached pictorial representation of 3 consecutive steps involved in
> secure booting but while I tried to understanding the working though the
> diagram I felt that authentication might never succeed as no decryption is
> taking place.Can anyone please inform how the steps are taking place? I
> have also attached the documentation related to high assurance booting.

One thing you may have missed in your reading is that secure boot is
about authentication rather than encryption. So we sign and verify,
rather than encrypt and decrypt.

Regards,
Simon