When I did a search in ppm this is what I got,

ppm> s Crypt::SSLeay
Searching in Active Repositories
  1. Crypt-SSLeay [0.51] OpenSSL glue that provides LWP https support
ppm>
[download]

When you doing an install by PPM you have to remember to call the package with the dash instead of double colons. Example,

ppm> install Crypt-SSLeay
[download]

Note: I thought that Crypt::SSLeay was in the default installation but I was wrong ( at least it isn't for Activestate Perl).