------- Forwarded Message Date: Thu, 28 Oct 93 15:58:57 -0700 To: marc@gza.com From: "Tom Jones" <wk01965@worldlink.com> Organization: ViaCrypt div Lemcom Systems Subject: ViaCrypt PGP for MS-DOS Now Shipping You recently contacted ViaCrypt and asked for information about ViaCrypt PGP, and that it be sent to you electronically. ViaCrypt PGP Version 2.4 for MS-DOS is now available for shipment. Appearing below is information from our literature, along with details about ordering ViaCrypt PGP. ViaCrypt Introduces... ViaCrypt(tm) PGP(tm) Pretty Good Privacy(tm) Protect The Privacy Of Your Files And E-Mail Messages ===================================================== Your files and messages. They're personal. They're private. And no one's business but yours. You may be planning a political campaign, preparing your taxes, or negotiating a contract. Whatever it is, you don't want your private electronic mail (e-mail) or confidential documents read by anyone without your permission. ViaCrypt PGP is the perfect tool for individuals, small businesses, large corporations, or anyone who values the privacy of their proprietary or sensitive information. A software program that combines powerful cryptography with ease-of-use, ViaCrypt PGP provides the ability to encrypt files and messages. Using Digital Signatures, it also provides a facility for message authentication. You Control The Keys To Your Privacy ------------------------------------ With ViaCrypt PGP, you are in complete control of your privacy. YOU create your keys. YOU decide how long they are valid. YOU decide who to trust. Other systems require you to place your trust in a disinterested third party, or worse yet, a chain of faceless people you've never met. ViaCrypt PGP allows you to do so too, but never requires it. YOU are always in control. ViaCrypt PGP is for people who don't want to surrender control of their privacy. Strong Cryptography ------------------- ViaCrypt PGP combines the respected RSA system for Public Key Cryptography with state-of-the-art IDEA(TM) encryption to protect your files and electronic mail, and to let you communicate securely with people you have never met. Features -------- * Protects the privacy of your files and e-mail messages. * Digitally signs files and e-mail messages to protect them from tampering and to authenticate the sender. * Sophisticated key management * RSA/IDEA hybrid encryption scheme * Message digests for digital signatures * Data compression before encryption * Simple, command-line interface for ease of use * Easy-to-understand documentation How It Works ------------ ViaCrypt PGP combines the best features of conventional and public key cryptography. Using conventional secret key cryptography, a file can be encrypted using a key, then sent to the recipient. The recipient decrypts the file using the same key. Conventional cryptography is very fast, but it is difficult to provide the recipient with the key in a secure manner. Public key cryptography eliminates the problems associated with distributing keys. Using public key cryptography, the key is split into two halves: A private key that you never reveal, and a public key that you can freely distribute. The public key and private key are mathematically related such that anything encrypted using the public key can be decrypted only using the matching private key. In a process invisible to the user, ViaCrypt PGP creates a temporary one-time key, called a session key, to encrypt the file using fast conventional cryptography. Then the recipient's public key is used to encrypt the session key. The encrypted session key is sent along with the encrypted file to the recipient. Once the file is encrypted, only the intended recipient(s) can read it. Using a single ViaCrypt PGP command, the recipient uses her own private key to recover the session key, then uses that key to quickly decrypt the file. Message authentication is also provided. The sender's own private key can be used to encrypt a 'fingerprint' or message digest of the file or message. This creates a digital signature of the file or message, which the recipient can check by using the sender's public key to decrypt and compare with the original. The digital signature proves that the sender was the true originator, and the file or message has not been altered by anyone else. ViaCrypt PGP Enables You To: ---------------------------- * Encrypt files or messages, sign them, or both * Decrypt previously encrypted files or messages * Check previously generated digital signatures * Encrypt messages to multiple recipients * Encrypt files or messages using just conventional cryptography * Generate your own keys * Easily add and remove other people's public keys to your 'key ring' * View the keys on your key ring * Revoke your keys * Re-format encrypted files so they can be sent through e-mail channels * Sign and certify other people's public keys * Specify 'trust parameters' for various keys Requirements ------------ * IBM Compatible PC * MS-DOS Version 3.3 or later * 640K RAM * 3-1/2 or 5-1/4 inch floppy disk drive ================================================================= What You Get * ViaCrypt PGP on both 3-1/2 and 5-1/4 inch diskettes * User Manual * License Agreement * Software registration card ================================================================= Pricing (Licensed for sale in USA and Canada only) ViaCrypt PGP Version 2.4 for MS-DOS (Single User) $ 199.95 (Promotional price good thru December 31, 1993: ($ 99.98) ViaCrypt PGP Version 2.4 for MS-DOS (Five User) $ 599.95 (Promotional price good thru December 31, 1993: ($ 299.98) ViaCrypt PGP Version 2.4 for MS-DOS (Twenty User) $1649.95 (Promotional price good thru December 31, 1993: ($ 824.98) Please add $8.00 shipping and handling per order If you live in AZ, CA, IL, TX, WA, NY, NJ, or GA please add appropriate sales tax. ================================================================= How To Order Four ways to order: 1. Via telephone at 1-800-536-2664 (orders only) 8 a.m. to 5 p.m. MST Monday - Friday. We accept American Express, Discover, MasterCard, or VISA. 2. Via FAX at (602) 943-2601. We can FAX you a pre-printed order form that you can fill in and FAX back to us. 3. Via Mail. Send your Check or Money Order to: ViaCrypt ViaCrypt Order Desk 2104 W. Peoria Ave. Phoenix, AZ 85029 4. Via company purchase order, providing you have been pre-approved for credit. Please contact ViaCrypt for terms, conditions, and credit information. ================================================================= For more information, contact ViaCrypt at (602) 944-0773. U.S. Patent No. 5,214,703 licensed by Ascom Tech, AG. U.S. Patent Nos. 4,200,770, 4,218,582, 4,405,829, and 4,424,414 Licensed Exclusively by Public Key Partners ------- End of Forwarded Message