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Crypto++: a C++ Class Library of Cryptographic Schemes Version 5.2.1 7/21/2004 This library includes: - a class hierarchy with an API defined by abstract base classes - AES (Rijndael) and AES candidates: RC6, MARS, Twofish, Serpent, CAST-256 - other symmetric block ciphers: IDEA, DES, Triple-DES (DES-EDE2 and DES-EDE3), DESX (DES-XEX3), RC2, RC5, Blowfish, Diamond2, TEA, SAFER, 3-WAY, GOST, SHARK, CAST-128, Square, Skipjack, Camellia, SHACAL-2 - generic cipher modes: ECB, CBC, CBC ciphertext stealing (CTS), CFB, OFB, counter mode (CTR) - stream ciphers: Panama, ARC4, SEAL, WAKE, WAKE-OFB, BlumBlumShub - public key cryptography: RSA, DSA, ElGamal, Nyberg-Rueppel (NR), Rabin, Rabin-Williams (RW), LUC, LUCELG, DLIES (variants of DHAES), ESIGN - padding schemes for public-key systems: PKCS#1 v2.0, OAEP, PSSR, IEEE P1363 EMSA2 - key agreement schemes: Diffie-Hellman (DH), Unified Diffie- Hellman (DH2), Menezes-Qu-Vanstone (MQV), LUCDIF, XTR-DH - elliptic curve cryptography: ECDSA, ECNR, ECIES, ECDH, ECMQV - one-way hash functions: SHA-1, MD2, MD4, MD5, HAVAL, RIPEMD- 128, RIPEMD-256, RIPEMD-160, RIPEMD-320, Tiger, SHA-2 (SHA-256, SHA-384, and SHA-512), Panama, Whirlpool - message authentication codes: MD5-MAC, HMAC, XOR-MAC, CBC-MAC, DMAC, Two-Track-MAC - cipher constructions based on hash functions: Luby-Rackoff, MDC - pseudo random number generators (PRNG): ANSI X9.17 appendix C, PGP's RandPool - password based key derivation functions: PBKDF1 and PBKDF2 from PKCS #5 - Shamir's secret sharing scheme and Rabin's information dispersal algorithm (IDA) - DEFLATE (RFC 1951) compression/decompression with gzip (RFC 1952) and zlib (RFC 1950) format support - fast multi-precision integer (bignum) and polynomial operations, with SSE2 optimizations for Pentium 4 processors - finite field arithmetics, including GF(p) and GF(2^n) - prime number generation and verification - various miscellaneous modules such as base 64 coding and 32-bit CRC - class wrappers for these operating system features (optional): - high resolution timers on Windows, Unix, and MacOS - Berkeley and Windows style sockets - Windows named pipes - /dev/random and /dev/urandom on Linux and FreeBSD - Microsoft's CryptGenRandom on Windows - A high level interface for most of the above, using a filter/pipeline metaphor - benchmarks and validation testing - FIPS 140-2 Validated You are welcome to use it for any purpose without paying me, but see license.txt for the fine print. This version of Crypto++ has been compiled successfully with MSVC 6.0 SP5 and .NET 2003 on Windows XP, GCC 2.95.4 on FreeBSD 4.6, GCC 2.95.3 on Linux 2.4 and SunOS 5.8, GCC 3.4 on Cygwin 1.5.10, and Metrowerks CodeWarrior 8.3 for Windows and MacOS. *** Important Usage Notes *** 1. If a constructor for A takes a pointer to an object B (except primitive types such as int and char), then A owns B and will delete B at A's destruction. If a constructor for A takes a reference to an object B, then the caller retains ownership of B and should not destroy it until A no longer needs it. 2. Crypto++ is thread safe at the class level. This means you can use Crypto++ safely in a multithreaded application, but you must provide synchronization when multiple threads access a common Crypto++ object. *** MSVC-Specific Information *** On Windows, Crypto++ can be compiled into 3 forms: a static library including all algorithms, a DLL with only FIPS Approved algorithms, and a static library with only algorithms not in the DLL. (FIPS Approved means Approved according to the FIPS 140-2 standard.) The DLL may be used by itself, or it may be used together with the second form of the static library. MSVC project files are included to build all three forms, and sample applications using each of the three forms are also included. To compile Crypto++ with MSVC, open the "cryptest.dsw" workspace file and build one or more of the following projects: cryptdll - This builds the DLL. Please note that if you wish to use Crypto++ as a FIPS validated module, you must use a pre-built DLL that has undergone the FIPS validation process instead of building your own. dlltest - This builds a sample application that only uses the DLL. cryptest Non-DLL-Import Configuration - This builds the full static library along with a full test driver. cryptest DLL-Import Configuration - This builds a static library containing only algorithms not in the DLL, along with a full test driver that uses both the DLL and the static library. To use the Crypto++ DLL in your application, #include "dll.h" before including any other Crypto++ header files, and place the DLL in the same directory as your .exe file. dll.h includes the line #pragma comment(lib, "cryptopp") so you don't have to explicitly list the import library in your project settings. To use a static library form of Crypto++, specify it as an additional library to link with in your project settings. In either case you should check the compiler options to make sure that the library and your application are using the same C++ run-time libraries and calling conventions. *** DLL Memory Management *** Because it's possible for the Crypto++ DLL to delete objects allocated by the calling application, they must use the same C++ memory heap. Three methods are provided to achieve this. 1. The calling application can tell Crypto++ what heap to use. This method is required when the calling application uses a non-standard heap. 2. Crypto++ can tell the calling application what heap to use. This method is required when the calling application uses a statically linked C++ Run Time Library. (Method 1 does not work in this case because the Crypto++ DLL is initialized before the calling application's heap is initialized.) 3. Crypto++ can automatically use the heap provided by the calling application's dynamically linked C++ Run Time Library. The calling application must make sure that the dynamically linked C++ Run Time Library is initialized before Crypto++ is loaded. (At this time it is not clear if it is possible to control the order in which DLLs are initialized on Windows 9x machines, so it might be best to avoid using this method.) When Crypto++ attaches to a new process, it searches all modules loaded into the process space for exported functions "GetNewAndDeleteForCryptoPP" and "SetNewAndDeleteFromCryptoPP". If one of these functions is found, Crypto++ uses methods 1 or 2, respectively, by calling the function. Otherwise, method 3 is used. *** GCC-Specific Information *** A makefile is included for you to compile Crypto++ with GCC. Make sure you are using GNU Make and GNU ld. The make process will produce two files, libcryptopp.a and cryptest.exe. Run "cryptest.exe v" for the validation suite. *** Documentation and Support *** Crypto++ is documented through inline comments in header files, which are processed through Doxygen to produce an HTML reference manual. You can find a link to the manual from http://www.cryptopp.com. Also at that site is the Crypto++ FAQ, which you should browse through before attempting to use this library, because it will likely answer many of questions that may come up. If you run into any problems, please try the Crypto++ mailing list. The subscription information and the list archive are available on http://www.cryptopp.com. You can also email me directly at [email protected], but you will probably get a faster response through the mailing list. *** History *** 1.0 - First public release. Withdrawn at the request of RSA DSI. - included Blowfish, BBS, DES, DH, Diamond, DSA, ElGamal, IDEA, MD5, RC4, RC5, RSA, SHA, WAKE, secret sharing, DEFLATE compression - had a serious bug in the RSA key generation code. 1