Hello Victor,
On Thu, Dec 24, 2015 at 5:57 PM, Victor Wagner wrote:
> On Thu, 24 Dec 2015 11:24:37 +0300
> Dmitry Belyavsky wrote:
>
>
> >
> > If you try to change the output length via the -macopt option of the
> > dgst command, you'll see that the text output will be 4 bytes.
>
> It is misfea
On Thu, 24 Dec 2015 11:24:37 +0300
Dmitry Belyavsky wrote:
>
> If you try to change the output length via the -macopt option of the
> dgst command, you'll see that the text output will be 4 bytes.
It is misfeature of dgst command. You have to use -signopt, not -macopt,
because dgst command doe
On Thu, Dec 24, 2015, Dmitry Belyavsky wrote:
>
> If you try to change the output length via the -macopt option of the dgst
> command, you'll see that the text output will be 4 bytes.
> It seems to happen because of the internal call to the EVP_MD_size()
> function.
>
> If we change the EVP_MD_C
Am 23.12.2015 um 23:18 schrieb Dr. Stephen Henson:
> That's an interesting question. What digest requires this? Is the output
> length arbitrary or do the standards specify a maximum size?
>
>
Is e.g. SHA-512/t (see 5.3.6 of FIPS 180-4) an appropriate example?
Here t is any positive integer witho
Dear Victor,
On Thu, Dec 24, 2015 at 11:02 AM, Victor Wagner wrote:
> On Thu, 24 Dec 2015 10:45:37 +0300
> Dmitry Belyavsky wrote:
>
>
> > >
> > > If there's a new construct whose output size depends on the input
> > > data, that probably requires a new family of functions.
> > >
> >
> > Well,
On Thu, 24 Dec 2015 10:45:37 +0300
Dmitry Belyavsky wrote:
> >
> > If there's a new construct whose output size depends on the input
> > data, that probably requires a new family of functions.
> >
>
> Well, the gost-mac is treated specially itself and may be it can be
> simplified introducing
On Thu, Dec 24, 2015 at 10:45:37AM +0300, Dmitry Belyavsky wrote:
> > > That's an interesting question. What digest requires this? Is the output
> > > length arbitrary or do the standards specify a maximum size?
>
> I mean the gost-mac digest (implemented in the ccgost engine,
> engines/ccgost/go
Dear Stephen and Victor,
On Thu, Dec 24, 2015 at 1:37 AM, Viktor Dukhovni wrote:
> On Wed, Dec 23, 2015 at 10:18:55PM +, Dr. Stephen Henson wrote:
>
> > That's an interesting question. What digest requires this? Is the output
> > length arbitrary or do the standards specify a maximum size?
>
On Wed, Dec 23, 2015 at 10:18:55PM +, Dr. Stephen Henson wrote:
> That's an interesting question. What digest requires this? Is the output
> length arbitrary or do the standards specify a maximum size?
With SHA3, NIST differentiates between fixed-length hash functions
and variable-length XOFs
On Wed, Dec 23, 2015, Dmitry Belyavsky wrote:
> Hello OpenSSL Team,
>
> I have a question.
>
> I need to implement a digest with variable length of output. The length of
> output can be easily specified by the control function, but EVP functions
> expect the constant length of the digest result.
Hello OpenSSL Team,
I have a question.
I need to implement a digest with variable length of output. The length of
output can be easily specified by the control function, but EVP functions
expect the constant length of the digest result.
Is there a good solution how to fix it and will the patch p
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