Differnent Sizes of Public PGP Keys

Hello:

I have been noticing that the sizes of the Public PGP Key Block
on some of your messages are different sizes. 

When I set up my PGP key pair, I selected the largest key size
which was 1024. It then gave me a public key block that look
like this:

-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: 2.6.2

mQCNAzD5t24AAAEEALSR4OvQ9lfGpTjqDsuYgtCtI9eYC82E29VO6tL6cBDNCWc/
KgJiPUvqV3ZSDLEbGy4t3FTDIguKITUxCJwtaMhZyOUFvjP51noFw1lhP3y1GW8J
9sHW+M8eo/F6S5OSUuw6P7yYU2+4cO3lBASFA2aL0JoUIwS2bT+5LqLYocENAAUR
tBxNYXJrIEFsbHluIDxhbGx5bkBhbGx5bi5jb20+
=Q3/s
-----END PGP PUBLIC KEY BLOCK-----

This is only 4 lines and a few characters long.

I have noticed that some others have public keys that are
larger than this. I have noticed one public key that is about
10 lines long.

What is happening here? Are there keys that are bigger than
1024?

I am using the latest PGP that is available from MIT.

Please help!

Thank you!

Mark Allyn
allyn@allyn.com
http://mark.allyn.com
http://clearplastic.com

Key certificates also include signatures.  If you have many signatures
on your key, your key certificate can get very big.  For example, mine
is about 10k or more (I haven't checked recently) with all the
signature intact.

As for keysize, you can generate keys as large as 2048 bits with PGP
2.6.2; you just need to type "2048" when it asks you for a keysize.
Alternatively, you can type in any keysize you wish to use, rather
than using the default sizes.

I hope this helps.

-derek