Re: openssl-users Digest, Vol 28, Issue 21

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cheers,

Thanks for the response, but haven't the evp_pkey struct of the public key. I' ve only the an bytes string that i retrieved from IEEE cert with "PEM_bytes_read_bio()". Now in want to form the ec_key struct and then the  evp_pkey struct.

Thanks

Best regards

Christian Adja


Il Mercoledì 22 Marzo 2017 19:01, Ethan Rahn <ethan.rahn@xxxxxxxxx> ha scritto:


Couldn't you just use EVP_PKEY_get1_EC_KEY?


Cheers,

Ethan

On Wed, Mar 22, 2017 at 10:48 AM, Christian Adja via openssl-users <openssl-users@xxxxxxxxxxx> wrote:
Good evening everybody,
I need help about to transform public key (unsigned char *) retrieved from IEEE cert in EVP_PKEY o EC_KEY. The public key is an ecdsaNistP256 in compressed form (compressedy1).
The public key form in hex =
|00|80|83|x point (32 bytes)|

Thanks,

Best Regards


Il Mercoledì 15 Marzo 2017 22:23, "openssl-users-request@ openssl.org" <openssl-users-request@ openssl.org> ha scritto:


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Today's Topics:

  1. Request for adding new ciphers (Christian Adja)
  2. Re: Request for adding new ciphers (Matt Caswell)
  3. Generating dh parameters multithreaded? (Joseph Southwell)
  4. Re: Generating dh parameters multithreaded? (Salz, Rich)
  5. OpenSSL Certificate Cross Signing (Moritz Wirth)
  6. Re: PKCS#7 (val?ry)
  7. Re: Generating dh parameters multithreaded? (Joseph Southwell)
  8. Re: Generating dh parameters multithreaded? (Salz, Rich)


------------------------------ ------------------------------ ----------

Message: 1
Date: Wed, 15 Mar 2017 18:03:44 +0000 (UTC)
From: Christian Adja <christian_adja@xxxxxxxx>
Subject: [openssl-users] Request for adding new ciphers
Content-Type: text/plain; charset="utf-8"

Hi everyone,
Someone can help for adding the ciphersuite " ECDHE_ECDSA_WITH_AES_128_CCM " and "ECDHE_ECDSA_WITH_AES_256_CCM " in openssl?
I tried adding in the file tls1.h??? # define TLS1_CK_ECDHE_ECDSA_WITH_AES_ 128_CCM??????????? 0x0300C0AC
??? # define TLS1_CK_ECDHE_ECDSA_WITH_AES_ 256_CCM??????????? 0x0300C0AD
And modifing the file? ssl_ciph.c the functions??? ssl_load_ciphers() ... And modifing the file evp_cipher.c and sssl_locl.cand finaly ssl_algs.c.
There are no way to make it works. It continue to give me? error: ssl3_get_client_hello:no shared cipher:s3_srvr.c:1420
thanks.


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Message: 2
Date: Wed, 15 Mar 2017 18:18:52 +0000
From: Matt Caswell <matt@xxxxxxxxxxx>
Subject: Re: Request for adding new ciphers
Content-Type: text/plain; charset=windows-1252



On 15/03/17 18:03, Christian Adja via openssl-users wrote:
> Hi everyone,
>
> Someone can help for adding the ciphersuite "
> ECDHE_ECDSA_WITH_AES_128_CCM " and "ECDHE_ECDSA_WITH_AES_256_CCM " in
> openssl?
> I tried adding in the file tls1.h
>    # define TLS1_CK_ECDHE_ECDSA_WITH_AES_ 128_CCM            0x0300C0AC
>    # define TLS1_CK_ECDHE_ECDSA_WITH_AES_ 256_CCM            0x0300C0AD
>
> And modifing the file  ssl_ciph.c the functions
>    ssl_load_ciphers() ...
> And modifing the file evp_cipher.c and sssl_locl.c
> and finaly ssl_algs.c.
>
> There are no way to make it works. It continue to give me  error:
> ssl3_get_client_hello:no shared cipher:s3_srvr.c:1420


These ciphersuites already exist in OpenSSL (from version 1.1.0).

Matt



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Message: 3
Date: Wed, 15 Mar 2017 14:18:38 -0400
From: Joseph Southwell <jsouthwell@xxxxxxxxxxxxx>
Subject: [openssl-users] Generating dh parameters multithreaded?
Content-Type: text/plain; charset="utf-8"

On any new install of our software we generate new dh parameters as follows?

DH *dh = DH_new();
!DH_generate_parameters_ex(dh, 2048, 2, NULL);
int codes = 0;
DH_check(dh, &codes);
DH_generate_key(dh);

It takes a long time. Is there some way to have it use all available cores instead of just the one?
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Message: 4
Date: Wed, 15 Mar 2017 18:21:05 +0000
From: "Salz, Rich" <rsalz@xxxxxxxxxx>
Subject: Re: Generating dh parameters multithreaded?
Message-ID:
Content-Type: text/plain; charset="utf-8"

> It takes a long time. Is there some way to have it use all available cores instead of just the one?

You'll have to write the code to do that parallelism yourself.

------------------------------

Message: 5
Date: Wed, 15 Mar 2017 19:46:07 +0100
From: Moritz Wirth <mw@xxxxxxxxx>
Subject: OpenSSL Certificate Cross Signing
Content-Type: text/plain; charset=utf-8

Good Evening all,


I have 2 Root Certificate Authorities which I want to use to cross sign
an intermediate certificate. I created a certificate request and signed
it with both CAs.

I issued an end user certificate with the intermediate CA and added both
intermediate CA Certificates (the one from Root1 and the one signed by
Root2). If only one CA is trusted, the certificate is still recognized
as trusted in Firefox regardless which certificate is on top of the
chain (Which is exactly what I want.)

I wondered if I can connect both intermediate Certificates to a single
certificate or do I always need both certificates?


Best Regards,

Moritz



------------------------------

Message: 6
Date: Wed, 15 Mar 2017 21:42:50 +0100
From: val?ry <vsbrin@xxxxxxxxx>
Subject: Re: PKCS#7
Message-ID:
    <CAMkdoSFR_kT= wxt5jAFMENwN3dXEhzVr=VkJmh-7=o caHj14OA@xxxxxxxxxxxxxx>
Content-Type: text/plain; charset="utf-8"

Alright, big thanks to both of you for your input!

On Mar 15, 2017 23:01, "Wouter Verhelst" <wouter.verhelst@xxxxxxxxx> wrote:

On 15-03-17 05:13, val?ry wrote:

> Hi,
>
> thank you very much for your response.
> Say someone would be able to gather several clear text AES keys and
> their respective asymmetrically encrypted RSA blocks. Would it weakens
> the security of the RSA key pair ? I mean could it be easier for someone
> using that information to brute force an RSA key pair ?
>

Think of it this way:

As far as the RSA algorithm is concerned, the AES keys are just data. They
happen to be AES keys, but they might have been a hash value, an image, or
somebody's date of birth.

If getting the cleartext as well as the encrypted text for an RSA message
would allow you to more easily guess the RSA key, then the RSA algorithm
would be seriously flawed.

There is no known attack against RSA for which this is true, however, as
Rich pointed out.

--
Wouter Verhelst

--
openssl-users mailing list
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Message: 7
Date: Wed, 15 Mar 2017 17:08:50 -0400
From: Joseph Southwell <jsouthwell@xxxxxxxxxxxxx>
Subject: Re: Generating dh parameters multithreaded?
Content-Type: text/plain; charset=us-ascii

Are you suggesting that I should modify openssl myself to expose that functionality or are suggesting that there is a way to do that given the already exposed functionality? If it is the latter could you point me in the right direction?

> On Mar 15, 2017, at 2:21 PM, Salz, Rich via openssl-users <openssl-users@xxxxxxxxxxx> wrote:
>
>> It takes a long time. Is there some way to have it use all available cores instead of just the one?
>
> You'll have to write the code to do that parallelism yourself.
> --
> openssl-users mailing list
>



------------------------------

Message: 8
Date: Wed, 15 Mar 2017 21:15:11 +0000
From: "Salz, Rich" <rsalz@xxxxxxxxxx>
To: Joseph Southwell <jsouthwell@xxxxxxxxxxxxx>,
Subject: Re: Generating dh parameters multithreaded?
Message-ID:
Content-Type: text/plain; charset="Windows-1252"

> Are you suggesting that I should modify openssl myself to expose that
> functionality or are suggesting that there is a way to do that given the already
> exposed functionality? If it is the latter could you point me in the right
> direction?

OpenSSL code does not do what you want.  You'll have to write it


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