#27 Enable SSL/TLS support for Opal library

[Raveendra Pai]

Hi,

I am using opal library to build sample fax application, I want to use SSL/TLS connection in my Fax application, I just wanted to know how to establish SSL/TLS support for Opal and how it is been used in application for incoming and outgoing connections ?

Thanks in Advance

Raveendra

P.S : By mistakenly, I have create the ticket under bugs section yesterday, pardon me.

[Robert Jongbloed]

See http://wiki.opalvoip.org

[Raveendra Pai]

Thanks Robert for the link, the link was very useful for me.
I installed open ssl (version 1.1.0) from this link :
http://slproweb.com/products/Win32OpenSSL.html

I have downloaded and installed both 32 bit and 64-bit installer (Developer Recomonded version). I tried building ptlib library post openssl installation, it detects automatically and enabled SSL support in the code. but I have encountered below compilation error in cypher.cxx of ptlib_static project :

1>..\..\ptclib\cypher.cxx(1279): error C2079: 'hmac' uses undefined struct 'hmac_ctx_st'
1>..\..\ptclib\cypher.cxx(1281): error C3861: 'HMAC_CTX_init': identifier not found
1>..\..\ptclib\cypher.cxx(1282): error C2664: 'int HMAC_Init_ex(HMAC_CTX *,const void *,int,const EVP_MD *,ENGINE *)': cannot convert argument 1 from 'int *' to 'HMAC_CTX *'
1>  ..\..\ptclib\cypher.cxx(1282): note: Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>..\..\ptclib\cypher.cxx(1283): error C2664: 'int HMAC_Update(HMAC_CTX *,const unsigned char *,std::size_t)': cannot convert argument 1 from 'int *' to 'HMAC_CTX *'
1>  ..\..\ptclib\cypher.cxx(1283): note: Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>..\..\ptclib\cypher.cxx(1284): error C2664: 'int HMAC_Final(HMAC_CTX *,unsigned char *,unsigned int *)': cannot convert argument 1 from 'int *' to 'HMAC_CTX *'
1>  ..\..\ptclib\cypher.cxx(1284): note: Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>..\..\ptclib\cypher.cxx(1286): error C3861: 'HMAC_CTX_cleanup': identifier not found
1>..\..\ptclib\cypher.cxx(1292): error C2664: 'PHMAC_SHA::PHMAC_SHA(PHMAC_SHA &&)': cannot convert argument 1 from 'const EVP_MD *' to 'const PHMAC_SHA::Algorithm *'
1>  ..\..\ptclib\cypher.cxx(1292): note: Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>..\..\ptclib\cypher.cxx(1298): error C2664: 'PHMAC_SHA::PHMAC_SHA(PHMAC_SHA &&)': cannot convert argument 1 from 'const EVP_MD *' to 'const PHMAC_SHA::Algorithm *'
1>  ..\..\ptclib\cypher.cxx(1298): note: Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>..\..\ptclib\cypher.cxx(1304): error C2664: 'PHMAC_SHA::PHMAC_SHA(PHMAC_SHA &&)': cannot convert argument 1 from 'const EVP_MD *' to 'const PHMAC_SHA::Algorithm *'
1>  ..\..\ptclib\cypher.cxx(1304): note: Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>..\..\ptclib\cypher.cxx(1310): error C2664: 'PHMAC_SHA::PHMAC_SHA(PHMAC_SHA &&)': cannot convert argument 1 from 'const EVP_MD *' to 'const PHMAC_SHA::Algorithm *'
1>  ..\..\ptclib\cypher.cxx(1310): note: Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast

Any suggestion on this compilation error. I am using Visual studio 2015 to compile the code. Please let me know how to troubleshoot this error or am I missing something ?

Thanks in Advance,

Raveendra

[Robert Jongbloed]

Soeey only v1.0.2 is currently supported, do not use v1.1.

I have updated the Wiki for this.

[Raveendra Pai]

Thanks for the response :)

[Raveendra Pai]

I have installed open ssl v1.0.2 and I could compile ptlib and opal. I just need to know is there any code samples for sample Fax application which works using TLS and support SIPS along with SRTP?

Thanks in Advance,

Raveendra