[openssl-project] to fully overlap or not to

[Richard Levitte]

In message <39cb0562-d313-c2d7-8d84-58badaaaf327 at openssl.org> on Wed, 28 Feb 2018 18:09:38 +0100, Andy Polyakov <appro at openssl.org> said:

appro> >>> I'd like to request more opinions on
appro> >>> https://github.com/openssl/openssl/pull/5427. Key dispute question is
appro> >>> whether or not following fragment should work
appro> >>>
appro> >>>   unsigned char *inp = buf, *out = buf;
appro> >>>
appro> >>>   for (i = 0; i < sizeof(buf); i++) {
appro> >>>       EVP_EncryptUpdate(ctx, out, &outl, inp++, 1);
appro> >>> 	out += outl;
appro> >>>   }
appro> >>
appro> >> This should work.
appro> > 
appro> > On second thought, perhaps not.
appro> 
appro> It seems that double-clarification is appropriate. As it stands now it
appro> *does* work. So question is rather if it should keep working [and if
appro> not, is it appropriate that stops working in minor release].

I'll side with that it should continue to work...  and most
definitely should NOT stop working in a minor release.

-- 
Richard Levitte         levitte at openssl.org
OpenSSL Project         http://www.openssl.org/~levitte/