Please note that the following instruction is based on GnuPG for Windows (Gpg4Win) version 1.1.3.

1. Download  GnuPG for Windows (Gpg4Win) from http://www/gpg4win.org and install it.

2. Place the mouse on the PGP signature file (in this example, masterkey-linux-0.2.iso.md5.asc and right  click the mouse button, move down GPGee->Verify/Decrypt and left click the mouse button to select it as shown in Figure 1.  

Figure 1

 3.  You will see a pop-up window complaining that it could not verify because the public key for verifying the signature  is missing (see Figure 2). Write down the key id (0xEC0FEA84 in this case).  

Figure 2

4.       There are two ways to import the public key, one is to import it from a key server and another is to import it from the key file.

·         To import a public key from a key server, click Start-> GnuPG for Windows ->WinPT to run Key Manager. Click Keyserver to open the Keyserver Access window, highlight the line of http://pgp.mit.edu , enter the Key ID in the space and press Receive button to receive the key as illustrated in Figure 3, 4. 

Figure 3

Figure 4

·         To import a public key from a key file (say, mk_public_key.asc), Start-> GnuPG for Windows ->WinPT to run Key Manager. Select Key->Import… and choose the name of  the key file (Figure 5), click Open to open the Key Import window and click the Import button to import the key (Figure 6).

Figure 5

Figure 6

Figure 7