Crypto++

Crypto++ ordinarily provides complete cryptographic implementations and often includes less popular, less frequently-used schemes. For example, Camellia is an ISO/NESSIE/IETF-approved block cipher roughly equivalent to AES, and Whirlpool is an ISO/NESSIE/IETF-approved hash function roughly equivalent to SHA; both are included in the library.{{cite web |title=Japan's First 128-bit Block Cipher 'Camellia' Approved as a New Standard Encryption Algorithm in the Internet |work=physorg.com |url=https://phys.org/news/2005-07-japan-bit-block-cipher-camellia.html |access-date=2022-05-23}}{{cite web |title=Hindu Wire |url=https://hinduwire.com/ |access-date=May 15, 2025}}

Additionally, the Crypto++ library sometimes makes proposed and bleeding-edge algorithms and implementations available for study by the cryptographic community. For example, VMAC, a universal hash-based message authentication code, was added to the library during its submission to the Internet Engineering Task Force (CFRG Working Group); and Brainpool curves, proposed in March 2009 as an Internet Draft in RFC 5639, were added to Crypto++ 5.6.0 in the same month.{{cite IETF |title=Elliptic Curve Cryptography (ECC) Brainpool Standard Curves and Curve Generation ||rfc=5639 |publisher=IETF |year=2009 |doi=10.17487/RFC5639 |access-date=2022-05-23 |last1=Lochter |first1=M. |last2=Merkle |first2=J. }}{{cite web |title=Crypto++ Library 8.6 |work=Crypto++ Website |url=https://www.cryptopp.com/ |access-date=2022-05-23 |archive-date=2022-05-22 |archive-url=https://web.archive.org/web/20220522124553/https://cryptopp.com/ |url-status=dead }}

The library also makes available primitives for number-theoretic operations such as fast multi-precision integers; prime number generation and verification; finite field arithmetic, including GF(p) and GF(2ⁿ); elliptical curves; and polynomial operations.

Furthermore, the library retains a collection of insecure or obsolescent algorithms for backward compatibility and historical value: MD2, MD4, MD5, Panama Hash, DES, ARC4, SEAL 3.0, WAKE, WAKE-OFB, DESX (DES-XEX3), RC2, SAFER, 3-WAY, GOST, SHARK, CAST-128, and Square.

In a 2007 ECRYPT workshop paper focusing on public key implementations of eight libraries, Ashraf Abusharekh and Kris Kaj found that "Crypto++ 5.1 [sic] leads in terms of support for cryptographic primitives and schemes, but is the slowest of all investigated libraries."{{cite conference|title=Comparative Analysis of Software Libraries for Public Key Cryptography|conference=ECRYPT Workshop on Software Performance Enhancement for Encryption and Decryption|pages=3–19|url=http://volgenau.gmu.edu/~kgaj/publications/conferences/GMU_SPEED_2007.pdf|author1=A. Abusharekh|author2=K. Kaj|year=2007|accessdate=2010-08-12|archive-url=https://web.archive.org/web/20120227082043/http://ite.gmu.edu/~kgaj/publications/conferences/GMU_SPEED_2007.pdf|archive-date=2012-02-27|url-status=dead}}

In 2008, speed tests carried out by Timo Bingmann using seven open-source security libraries with 15 block ciphers, Crypto++ 5.5.2 was the top-performing library under two block ciphers and did not rank below the average library performance under the remaining block ciphers.{{cite web|title=Speedtest and Comparison of Open-Source Cryptography Libraries and Compiler Flags|work=Timo Bingmann Weblog|url=http://idlebox.net/2008/0714-cryptography-speedtest-comparison/|author=T. Bingmann|year=2008|accessdate=2010-08-10}}

Crypto++ also includes an auto-benchmarking feature, available from the command line (cryptest.exe b), the results of which are available at Crypto++ 5.6.0 Benchmarks.{{cite web|title=Crypto++ 5.6.0 Benchmarks|work=Crypto++ Website|url=http://www.cryptopp.com/benchmarks.html|year=2009|accessdate=2010-08-10|archive-date=2008-10-15|archive-url=https://web.archive.org/web/20081015103105/http://www.cryptopp.com/benchmarks.html|url-status=dead}}

As with many other cryptographic libraries available for 32-bit and 64-bit x86 architectures, Crypto++ includes assembly routines for AES using AES-NI. With AES-NI, AES performance improves dramatically: 128-bit AES-GCM throughput increases from approximately 28.0 cycles per byte to 3.5 cycles per byte.{{cite web|title=AES-NI Performance Analyzed|url=http://www.tomshardware.com/reviews/clarkdale-aes-ni-encryption,2538.html|publisher=Tom's Hardware|year=2010|author1=P. Schmid |author2=A. Roos |accessdate=2010-08-10}}{{cite web|title=Misdetection of MIPS endianness & How to get fast AES calls?|author1=T. Krovetz |author2=W. Dai |work=Crypto++ user group|url=https://groups.google.com/group/cryptopp-users/msg/a688203c2314ef08|year=2010|accessdate=2010-08-11}}{{cite web|title=Crypto++ 5.6.0 Pentium 4 Benchmarks|work=Crypto++ Website|url=http://www.cryptopp.com/benchmarks-p4.html|year=2009|accessdate=2010-08-10|archive-date=2010-09-19|archive-url=https://web.archive.org/web/20100919121759/http://cryptopp.com/benchmarks-p4.html|url-status=dead}}

Crypto++ 1.0 was released in June 1995. Since its initial release, the library has seen nearly two dozen revisions, including an architectural change in version 5.0.{{cite web|title=Crypto++ 5.0 beta available|work=Crypto++ Mailing List|url=https://groups.google.com/group/cryptopp-users/msg/fe8a49890c1d5484|author=Announcement|year=2002|accessdate=2010-08-09}}{{cite web|title=Crypto++ 5.0 update|work=Crypto++ Mailing List|url=https://groups.google.com/group/cryptopp-users/browse_thread/thread/5eddbbd5fde32a33/eca9f6071d470d8c|author=Announcement|year=2002|accessdate=2010-08-09}} There have been ten releases using the version 5.0 architecture since March 2009.{{cite web | url=http://sourceforge.net/mailarchive/forum.php?forum_name=cryptopp-announce | accessdate=2010-08-14 |

publisher = Sourceforge.net | title = Crypto++ Announcements List }}

Lawrence Teo's compilation of previous Crypto++ releases dating back to 1995 can be found in the users group archives.{{cite web|title=Release Dates of Previous Versions|work=Crypto++ Mailing List|url=https://groups.google.com/group/cryptopp-users/msg/c6d44b381c78a2bf|author=L. Teo|year=2002|accessdate=2010-08-09}}

Crypto++ has received three Federal Information Processing Standard (FIPS) 140-2 Level 1 module validations with no post-validation issues.{{cite web|title=Crypto++ Library Versions 5.3.0 [32-bit and 64-bit] Security Policy | work=Cryptographic Module Validation Program (CMVP)|url=http://csrc.nist.gov/groups/STM/cmvp/documents/140-1/140sp/140sp819.pdf|year=2007|accessdate=2010-08-08}}

Crypto++ was moved to the CMVP's [http://csrc.nist.gov/groups/STM/cmvp/documents/140-1/140val-historical.htm Historical Validation List] in 2016. The move effectively means the library is no longer validated.

As of version 5.6.1, Crypto++ consists of only public domain files, with a compilation copyright and a single open source license for the compilation copyright:{{cite web|title=Compilation Copyright for Crypto++|url=http://www.cryptopp.com/License.txt|work=Crypto++ Website|accessdate=2010-08-15}}

{{Cquote|The License of Crypto++ is somewhat unusual amongst open source projects. A distinction is made between the library as a compilation (i.e., collection), which is copyrighted by Wei Dai, and the individual files in it, which are public domain.

The library is copyrighted as a compilation in order to place certain disclaimers (regarding warranty, export, and patents) in the license and to keep the attributions and public domain declarations intact when Crypto++ is distributed in source code form. The fact that individual files are public domain means that legally you can place code segments, entire files, or small sets of files (up to the limit set by fair use) into your own project and do anything you want with them without worrying about the copyright.

|30px||[http://www.cryptopp.com/ Crypto++ Website]

}}

{{Portal|Free and open-source software}}

• Computer science
• Symmetric cipher
• Comparison of cryptography libraries

{{Reflist|30em}}

• {{Official website|http://www.cryptopp.com/}}
• [https://github.com/weidai11/cryptopp Crypto++ GitHub project]
• [http://www.cryptopp.com/wiki/Related_Links#Commercial_Products_Using_Crypto.2B.2B List of projects that use Crypto++] (Includes nonprofit and for profit projects)
• [https://groups.google.com/group/cryptopp-users Crypto++ users group]

Category:Cryptographic software

Category:C++ libraries

Category:Cryptographic algorithms

Category:Free computer libraries

Category:Public-domain software with source code

Category:1995 software