--- On Thu, 10/28/10, Dave Thompson <dthomp...@prinpay.com> wrote:
> From: Dave Thompson <dthomp...@prinpay.com>
> Subject: RE: B64_read_PKCS7 : Anyone modified the base64 reader to be more
> forgiving?
> To: openssl-users@openssl.org
> Date: Thursday, October 28, 2010, 7:00 PM
> > From: owner-openssl-us...@openssl.org
> On Behalf Of Harakiri
> > Sent: Thursday, 28 October, 2010 07:52
> >
> > However, it would be easy to fix i guess - the base64
> reader
> > simply must ignore the rule that each line has to be a
> certain length.
> >
> BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL)
>
> Output doesn't generate (any) linebreaks. Input doesn't
> REQUIRE them every <80, but does ALLOW them anywhere.
Thanks for your reply, that does look like a good idea - however you say that
the output doesnt generate any newlines either - well this not wanted because
after decryption/verification the output generated by the CMD would then
contain an invalid encoded message if the base64 block is just one line with no
new lines.
Is BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL) a global variable?
Maybe it would be possible to set this to ignore NL/errors for reading but
reset it again for writing the resulting message ?
> Alternatively, instead of using a BIO directly on the
> message
> as received, you could first correct it by just breaking
> any
> overlong base64 line(s); instead of actually parsing MIME
> maybe you can assume nonheader nonmarker is base64 body.
> If it fits in memory you can just read it in and fix it,
> then point to that in a memBIO you give to SIME_read_.
> If not you probably have to make a BIO_pair and a thread
> that feeds your end with corrected data while OpenSSL
> consumes the other end.
That sounds pretty complicated actually, and i dont want to pipe it into
memory, it should work for streaming (as the default) so it can handle very
large messages too.
Thanks for your reply.
Regards
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