Re: [Linux-ima-devel] [PATCH 0/7] IMA: new parser for ima_restore_measurement_list()

Ken Goldman
2017-05-17T16:28:39Z

On 5/17/2017 3:25 AM, Roberto Sassu wrote:
>
> The format of digestN is: <algo name>:\0<digest value>, the same used
> for the file digest.

Since the format is changing from the SHA-1 log format anyway ...

How do people feel about the colon and null terminated string format for
algorithm identifiers?

The TCG standard enumerations are uint16_t, and there is a registry of
hash algorithms.

As a consuming parser, it feels nice to know it's always 2 bytes and not
have to worry about a missing colon or a missing nul terminator risking
a buffer overflow.