Re: [PATCH] ima-evm-utils: Add backward compatible support for openssl 1.1

[Mimi Zohar <zohar@linux.vnet.ibm.com>]

On Sun, 2018-01-28 at 09:39 -0800, James Bottomley wrote:
> On Sun, 2018-01-28 at 08:41 -0800, James Bottomley wrote:
> > Openssl 1.1 is really annoying in that it made certain objects opaque
> > and added accessors for the necessary components, but these accessors
> > often don't exist in 1.0 and before, so there's no way to create
> > clean code that will compile with both 1.0 and 1.1; instead you have
> > to compiled with both code bases to make sure everything is working.
> > 
> > The other problem is that since the structures are opaque, their size
> > isn't known, so having a structure declared as a variable is no
> > longer possible.
> > 
> > This change switches all uses of EVP_MD_CTX to be pointers
> > initialised with the correct EVP_MD_CTX_new() (not available in 1.0),
> > does the same for HMAC_CTX, and uses the 1.1 only primitive
> > RSA_get0_key() to extract the public modulus and exponent from an RSA
> > key.
> > 
> > Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com
> > >
> > Tested-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
> 
> OK, let me try that again without the line breaks.

Definitely a lot better.

Mimi