Hi there,
Can any body please tell me,
where can I find the answers to these questions?
Thanks
-Rohan
---------------------------- Original Message ----------------------------
Subject: Re: Queries over OpenSSL programs
From: "Rohan Shrivastava" <[EMAIL PROTECTED]>
Date: Wed, June 8, 2005 8:03 am
To: openssl-users@openssl.org
--------------------------------------------------------------------------
Riaz,
Thanks for the help,
I am able to dump the packets using ssldump.
Some of my queries are still unanswered.
I am again pasting it here.
>> [#]. If they are able to communicate in a secured session,
>> then how come they completed SSL handshake without random number
source(I think it is required at time of Handshake)?
the default random file is in /dev/urandom in linux .. check the
environvent variable rand and see where its pointing to.
>>
>> [#]. How can I authenticate Clients (any sample code will help me a
lot) or what is function used for asking Client's certificate ?
There is an option in SSL that can be set either in the SSL_CTX or
in the SSLOBJECT depending on whether you need to enforce "client auth"
always or based on certain requirement. If set in CTX it is
always enforced.
SSL_CTX_set_verify(pSSLCtx, SSL_VERIFY_PEER,
client_cert_verify_callback);
SSL_set_verify(pSSLCtx,SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,
client_cert_verify_callback);
this callback function will be executed when the client cert is sent to
the server, once this option is set, SSL_accept will automatically prompt
for a client cert.
>>
>> [#]. Is the loading CAs list, required at the server/client (as here I
did not load) ,if required then how can I create such list as I am
using this in local network?
This is not mandatory, depends on what ctx/sslobj options you have set.
you can use openssl tools to generate the same.
>>
>> [#]. Also can I place the code here?
Thanks
-Rohan
> use ssldump or tcpdump to view if the connection is being established in
a secure manner
>
> On 6/7/05, Rohan Shrivastava <[EMAIL PROTECTED]> wrote:
>>
>> Hello,
>>
>> I am new to OpenSSL programming through C.
>>
>> This is my first program, so I am not sure whether
>> I have achieved secure session between client and server or not, though
they are able to communicate
>> using SSL_write/read functions.
>>
>> This is how I did the things
>>
>> At server I loaded certificate & private key & after accepting
>> TCP connection I accepted SSL session request.
>> & then started communicating with Client.
>>
>> At client I just used SSLv3_method() & SSL_CTX_new() functions to get new
>> ctx object.
>> Here after setting up TCP connection I initiated SSL connection
request, & on success it communicates with server.
>>
>> I tired to load Random file with the following code, but could not get
through,
>> so I did without random source (for both client & server).
>>
>> #defile RANDOM "/dev/random"
>>
>> if (!(RAND_load_file(RANDOM,1024*1024))) {
>> printf("\n Error in loading random file");
>> exit(0);
>> }
>>
>>
>> I generated Certificate & Keys with the following commands
>>
>> openssl -genrsa 1024 -out key.pem
>> openssl req -new -key key.pem -x509 -days 3650 -out server_crt.pem
>>
>> Now my queries are:
>>
>> [#]. How can I be sure that session is secure?
>>
>> [#]. If they are able to communicate in a secured session,
>> then how come they completed SSL handshake without random number source
(I think it is required at time of Handshake)?
>>
>> [#]. How can I authenticate Clients (any sample code will help me a
lot) or what is function used for asking Client's certificate ?
>>
>> [#]. Is the loading CAs list, required at the server/client (as here I did
>> not load) ,if required then how can I create such list as I am using this
>> in local network?
>>
>> [#]. Also can I place the code here?
>>
>>
>> Any help will be highly appreciated
>>
>> Thanks
>> -Rohan
>>
>> ______________________________________________________________________
OpenSSL Project http://www.openssl.org
>> User Support Mailing List openssl-users@openssl.org
>> Automated List Manager [EMAIL PROTECTED]
>>
>
>
>
> --
> Thank you,
> Best Regards
> Riaz Ur Rahaman
>
______________________________________________________________________
OpenSSL Project http://www.openssl.org
User Support Mailing List openssl-users@openssl.org
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______________________________________________________________________
OpenSSL Project http://www.openssl.org
User Support Mailing List openssl-users@openssl.org
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______________________________________________________________________
OpenSSL Project http://www.openssl.org
User Support Mailing List openssl-users@openssl.org
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