> From: owner-openssl-us...@openssl.org On Behalf Of redpath
> Sent: Thursday, 25 April, 2013 09:40
> To: openssl-users@openssl.org
> Subject: Re: Data and Signature (envelope)
>
> I looked at the latest smsign.c shown below modified with a
> large data item.
> The result
I looked at the latest smsign.c shown below modified with a large data item.
The result is still a detached and quite small like a signature. The flag
changed
and yet nothing different. It should be quite large. All I see is the API to
soign
p7 = PKCS7_sign(scert, skey, NULL, in, flags);
and trie
On Thu, Apr 25, 2013, Viktor Dukhovni wrote:
> On Wed, Apr 24, 2013 at 10:35:04PM -0400, Dave Thompson wrote:
>
> > > I am assuming RSA though I would like to do ECDSA.
> >
> > These APIs will use any privatekey for which a signature
> > scheme is available; that's RSA DSA ECDSA (or pedantically
On Thu, Apr 25, 2013, redpath wrote:
> I took the sign.c example and modified it slightly to use artifacts I have,
> but it seems the result just produces a PKCS7 that has a signature?
> I want to have the data (PDF or JPG) in there as I need to use it after
> validating
> that it is trusted.
>
Exactly a non-detached, I see the constant detached and thought thats what it
meant but that road lead nowhere, so if anyone has pointers how to make a
non-detacched or modify below that would be
great.
--
View this message in context:
http://openssl.6102.n7.nabble.com/Data-and-Signature-envel
On 4/25/2013 1:13 PM, redpath wrote:
I took the sign.c example and modified it slightly to use artifacts I have,
but it seems the result just produces a PKCS7 that has a signature?
I want to have the data (PDF or JPG) in there as I need to use it after
validating
that it is trusted.
Basically I
I took the sign.c example and modified it slightly to use artifacts I have,
but it seems the result just produces a PKCS7 that has a signature?
I want to have the data (PDF or JPG) in there as I need to use it after
validating
that it is trusted.
Basically I have a piece of data and a signature an
I thought the PKCS7 was the way to go thanks.
Yes the command line is confusing as to what the PKCS7 can provide
and thats what was a paradox to me.
Any pointers to PKCS7 example code inserting objects and extracted them
would be appreciated and I do use the men_bio nicely.
--
View this messag
On Wed, Apr 24, 2013 at 10:35:04PM -0400, Dave Thompson wrote:
> > I am assuming RSA though I would like to do ECDSA.
>
> These APIs will use any privatekey for which a signature
> scheme is available; that's RSA DSA ECDSA (or pedantically
> EC; openssl uses the same EC_KEY struct for ECDSA and
> From: owner-openssl-us...@openssl.org On Behalf Of redpath
> Sent: Wednesday, 24 April, 2013 18:10
> I saw the CMS but I did not see how to store raw data which I need to
> extract?
> Lets assume the data was a JPG and I created signature from
> the MD (SHA1)
> how can I get the JPG use it and
I saw the CMS but I did not see how to store raw data which I need to
extract?
Lets assume the data was a JPG and I created signature from the MD (SHA1)
how can I get the JPG use it and validate it. I looked at the PKCS7 and no
mention of adding
objects.
Any example is best to learn assuming
dat
2013/4/24 redpath
> I have a piece of data like a JPG and a MD from it and a signature PKCS#1
> from the MD.
>
>int rc= RSA_sign(NID_sha1, md, 20, sigret, &siglen, rsapriv)
>
> I send the data and the signature to someone to verify the data and they
> use
> it.
> Now maybe there is standard m
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