unable to install package on Ubuntu

Linux and Unix-Like Ubuntu
1

Hi all,

I am working on Ubuntu 7.10 and I want to install libssl-dev_0.9.8a-7ubuntu0.13_i386.deb. So tryied it with apt-get command but getting the following error--

Then I downloaded .deb file and attempt to install it with package installer but again unable to install it and getting the error--

In Synaptic, libssl0.9.8 is installed on my system. I tried reinstalling it and that didn't make a difference.

Any suggestions would be appreciated.

2

what is the output of:

apt-cache search libssl

?

3

The package name is openssl, which includes libssl.

4

thats what i thought, but didn't have an ubuntu to search for the right package...