Prerequisite. Getting Started. Signing and Encryption using Microsoft outlook 2007

Transcription

1 Signing and Encryption using Microsoft outlook 2007 Prerequisite a. The user s account has been added and correctly configured into Microsoft outlook. b. The user has an authentication certificate. The address in the Subject alternative name of the certificate must match the account configured on Outlook. This guideline OS based on Microsoft Outlook Other versions of Microsoft Outlook may vary in getting to the dialog boxes. Getting Started This manual covers the following topics: Digitally Sign All your Messages Digitally Sign a Single message Install your Recipient s Public Key

2 Digitally sign all your messages 1. Click on Tools tab then on Trust Center.

3 2. Under Encrypted Mail, select the Add digital signature to outgoing messages check box. Important Note: To send an encrypted you can tick encrypt contents and attachments for outgoing messages. If your receiver s public key is stored in your key store Outlook will automatically send an encrypted (See how to install receiver s public key). If however the public key is not stored in the windows key store Outlook will automatically send a Signed .

4 3. Under Digital IDs click on Export/Import then browse and search for your Authentication certificate. Enter your password and assign a digital ID name. Click Ok. 4. If a window just like the one below appears click on Set Security level.

5 5. If you want to enter your password everytime your certificate is used meaning (everytime you send an ) select High. If you do not want to enter your password evertime you use your certificate select Medium. 6. After you select your preferred security Level click Next then finish.

6 Digitally Sign A Single Message. 1. Create a new message, in the Options group, click the Digitally Sign Message button button image. NOTE If you don't see this button, click the Options Dialog Box Launcher in the lower right corner of the Options group to open the Message Options dialog box. Click the Security Settings button and in the Security Properties dialog box, select Add digital signature to this message. Click OK and then close the Message Options dialog box. 2. To Encrypt message click on the Encrypt this message button 3. In order to encrypt a message your receiver s public key should be in your key store. (See how to install receiver s public key)

7 How to install your receiver s public key 1. Ask your intended receiver to send you a signed . You will know if an is signed if you see a ribbon beside the sender s name. You can click on the ribbon to see the sender s information. 2. Right click on the sender s on From field. Click on Add to outlook contacts. 3. Once you have added the contact the certificate will also be saved. Verify by clicking on Certificates.

8 4. You should see something like the one below. How to Encrypt your Prerequisite: a. The receiver s public key should be installed in outlook contacts. 1. Click on Tools tab then on Trust Center.

9 2. Click on Security. 3. Check the Encrypt contents and attachments for outgoing messages.

10 4. You can now send encrypted . Open a new message and click on Options. Click on Encrypt.