Thanks jimmy..I realised that much, the update is happening from ssl3_mac
defined in s3_enc.c, some "s2n" of the length is called, followed by a
digestupdate(md, 2)..in case of READ, md is an empty array..why do we copy
the ssl record length into a temp var "p" and then do a s2n followed by an
digest update?
Thanks
--Gayathri
Gayathri Sundar wrote:
> Can someone give me inputs on the function ssl3_mac, especially where
> it is called s->method->ssl3_enc->mac(s,&(p[wr->length]),1);
>
> I need to know what p[wr->length] is pointing to and why we do a
> digest update of 2 bytes from that.
>
> The code is taken from s3_pkt.c function ssl3_write_bytes.
>
> Thanks
> --Gayathri
i hope u meant in 'do_ssl3_write()'.
p[wr->length] is pointing to the place just after your data. this is where
you want the mac to be placed. if you look at ssl3_mac(), the second param
is the o/p param.
where exactly is it in the code is it that you mentioned update of 2 bytes
being done?
-jb
--
mathematician, n.:
Some one who believes imaginary things appear right before your i's.
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