info.txt

大数运算库rsaref ,可用它来实现rsa 算法

from RSA Data Security's software engineers. The DES code was written
by Richard Outerbridge, with help from Phil Karn and Dan Hoey. Jim
Hwang of Stanford wrote parts of the arithmetic code under contract
to RSA Laboratories.


ABOUT RSA LABORATORIES

RSA Laboratories is the research and development division of RSA Data
Security, Inc., the company founded by the inventors of the RSA
public-key cryptosystem. RSA Laboratories reviews, designs and
implements secure and efficient cryptosystems of all kinds. Its
clients include government agencies, telecommunications companies,
computer manufacturers, software developers, cable TV broadcasters,
interactive video manufacturers, and satellite broadcast companies,
among others.

RSA Laboratories draws upon the talents of the following people:

Len Adleman, distinguished associate - Ph.D., University of
  California, Berkeley; Henry Salvatori professor of computer
  science at University of Southern California; co-inventor of
  RSA public-key cryptosystem; co-founder of RSA Data Security, Inc.

Taher Elgamal, senior associate - Ph.D., Stanford University;
  inventor of Elgamal public-key cryptosystem based on discrete
  logarithms; holder of three patents for data compression algorithms
  and implementations.

Martin Hellman, distinguished associate - Ph.D., Stanford University;
  professor of electrical engineering at Stanford University;
  co-inventor of public-key cryptography, exponential key exchange;
  IEEE fellow; IEEE Centennial Medal recipient

Burt Kaliski, chief scientist - Ph.D., MIT; former visiting assistant
  professor at Rochester Institute of Technology;  editor of Public-Key
  Cryptography Standards; general chair of CRYPTO '91

Cetin Koc, associate - Ph.D., University of California, Santa
  Barbara; assistant professor at Oregon State University
 
Ron Rivest, distinguished associate - Ph.D., Stanford University;
  professor of computer science at MIT; co-inventor of RSA public-key
  cryptosystem; co-founder of RSA Data Security, Inc.; member of
  National Academy of Engineering; director of International
  Association for Cryptologic Research; program co-chair of ASIACRYPT
  '91

Matt Robshaw, research scientist - Ph.D., University of London; member
  of EUROCRYPT '91 organizing committee

RSA Laboratories seeks the talents of other people as well. If you're
interested, please write or call us.


ADDRESSES

RSA Laboratories                   RSA Data Security, Inc.
100 Marine Parkway                 100 Marine Parkway
Redwood City, CA  94065            Redwood City, CA  94065

[phone]                     [phone]
e-mail: [e-mail]           [e-mail]


RSA LABORATORIES RSAREF 2.0 PROGRAM LICENSE AGREEMENT

RSA LABORATORIES, A DIVISION OF RSA DATA SECURITY, INC. ("RSA")
GRANTS YOU A LICENSE AS FOLLOWS TO THE "RSAREF" PROGRAM:

1.   LICENSE. RSA grants you a non-exclusive, non-transferable,
     perpetual (subject to the conditions of Section 8) license for
     the "RSAREF" program (the "Program") and its associated
     documentation, subject to all of the following terms and
     conditions:

     a.   to use the Program on any computer;

     b.   to make copies of the Program for back-up purposes;

     c.   to modify the Program in any manner for porting or
          performance improvement purposes (subject to Section 2) or
          to incorporate the Program into other computer programs for
          your own personal or internal use, provided that you provide
          RSA with a copy of any such modification or Application
          Program by electronic mail, and grant RSA a perpetual,
          royalty-free license to use and distribute such
          modifications and Application Programs on the terms set
          forth in this Agreement.

     d.   to copy and distribute the Program and Application Programs
          in accordance with the limitations set forth in Section 2.

"Application Programs" are programs which incorporate all or any
portion of the Program in any form. The restrictions imposed on
Application Programs in this Agreement shall not apply to any
software which, through the mere aggregation on distribution media,
is co-located or stored with the Program.

2.   LIMITATIONS ON LICENSE.

     a.   RSA owns the Program and its associated documentation and
          all copyrights therein. You may only use, copy, modify and
          distribute the Program as expressly provided for in this
          Agreement. You must reproduce and include this Agreement,
          RSA's copyright notices and disclaimer of warranty on any
          copy and its associated documentation. The Program and any
          Application programs must be distributed with their source
          code.

     b.   The Program may not be used directly for revenue-generating
          purposes. You may not:

          (i)  use the Program to provide services to others for which
               you are compensated in any manner;

          (ii) license or otherwise distribute any Application Program
               in any manner that generates income to you, including
               without limitation any income on account of license
               fees, royalties, maintenance fees and upgrade fees; and

          (iii) license or otherwise distribute any Application
               Program without the express written acknowledgment of
               the end user that the Program will not be used in
               connection with any revenue-generating activity of the
               end user.

          Nothing in this paragraph prohibits you from using the
          Program or any Application Program solely for internal
          purposes on the premises of a business which is engaged in
          revenue-generating activities.

     c.   The Program, if modified, must carry prominent notices
          stating that changes have been made, and the dates of any
          such changes. 

     d.   Prior permission from RSA in writing is required for any
          modifications that access the Program through ways other
          than the published Program interface or for modifications to
          the Program interface. (See the "What is it? RSAREF Supports
          the Following Algorithms" and "What You Can (and Cannot) Do
          With RSAREF," paragraph 4, all incorporated herein by
          reference, for details.) RSA will grant all reasonable
          requests for permission to make such modifications.

3.   NO RSA OBLIGATION. You are solely responsible for all of your
     costs and expenses incurred in connection with the distribution
     of the Program or any Application Program hereunder, and RSA
     shall have no liability, obligation or responsibility therefor.
     RSA shall have no obligation to provide maintenance, support,
     upgrades or new releases to you or to any distributee of the
     Program or any Application Program.

4.   NO WARRANTY OF PERFORMANCE. THE PROGRAM AND ITS ASSOCIATED
     DOCUMENTATION ARE LICENSED "AS IS" WITHOUT WARRANTY AS TO THEIR
     PERFORMANCE, MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR
     PURPOSE. THE ENTIRE RISK AS TO THE RESULTS AND PERFORMANCE OF
     THE PROGRAM IS ASSUMED BY YOU AND YOUR DISTRIBUTEES. SHOULD THE
     PROGRAM PROVE DEFECTIVE, YOU AND YOUR DISTRIBUTEES (AND NOT RSA)
     ASSUME THE ENTIRE COST OF ALL NECESSARY SERVICING, REPAIR OR
     CORRECTION.

5.   LIMITATION OF LIABILITY. EXCEPT AS EXPRESSLY PROVIDED FOR IN
     SECTION 6 HEREINUNDER, NEITHER RSA NOR ANY OTHER PERSON WHO HAS
     BEEN INVOLVED IN THE CREATION, PRODUCTION, OR DELIVERY OF THE
     PROGRAM SHALL BE LIABLE TO YOU OR TO ANY OTHER PERSON FOR ANY
     DIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES, EVEN IF RSA HAS BEEN
     ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

6.   Nothing in this agreement shall be construed as a representation
     or warranty against infringement of any third party rights based
     on use of the program.

7.   RSAREF is a non-commercial publication of cryptographic
     techniques. Portions of RSAREF have been published in the
     International Security Handbook and the August 1992 issue of Dr.
     Dobb's Journal. Privacy applications developed with RSAREF may be
     subject to export controls. If you are located in the United
     States and develop such applications, you are advised to consult
     with the State Department's Office of Defense Trade Controls.

8.   TERM. The license granted hereunder is effective until
     terminated. You may terminate it at any time by destroying the
     Program and its associated documentation. The termination of your
     license will not result in the termination of the licenses of any
     distributees who have received rights to the Program through you
     so long as they are in compliance with the provisions of this
     license.

9.   GENERAL

     a.   This Agreement shall be governed by the laws of the State of
          California.

     b.   Address all correspondence regarding this license to RSA's
          electronic mail address <[e-mail]>, or
          to

               RSA Laboratories
               ATTN: RSAREF Administrator
               100 Marine Parkway, Suite 500
               Redwood City, CA  94065