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430 lines
21 KiB
430 lines
21 KiB
15 years ago
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Crypto++: a C++ Class Library of Cryptographic Schemes
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Version 5.6.0 (3/15/2009)
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Crypto++ Library is a free C++ class library of cryptographic schemes.
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Currently the library contains the following algorithms:
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algorithm type name
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authenticated encryption schemes GCM, CCM, EAX
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high speed stream ciphers Panama, Sosemanuk, Salsa20, XSalsa20
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AES and AES candidates AES (Rijndael), RC6, MARS, Twofish, Serpent,
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CAST-256
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IDEA, Triple-DES (DES-EDE2 and DES-EDE3),
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other block ciphers Camellia, SEED, RC5, Blowfish, TEA, XTEA,
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Skipjack, SHACAL-2
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block cipher modes of operation ECB, CBC, CBC ciphertext stealing (CTS),
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CFB, OFB, counter mode (CTR)
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message authentication codes VMAC, HMAC, CMAC, CBC-MAC, DMAC,
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Two-Track-MAC
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SHA-1, SHA-2 (SHA-224, SHA-256, SHA-384, and
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hash functions SHA-512), Tiger, WHIRLPOOL, RIPEMD-128,
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RIPEMD-256, RIPEMD-160, RIPEMD-320
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RSA, DSA, ElGamal, Nyberg-Rueppel (NR),
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public-key cryptography Rabin, Rabin-Williams (RW), LUC, LUCELG,
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DLIES (variants of DHAES), ESIGN
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padding schemes for public-key PKCS#1 v2.0, OAEP, PSS, PSSR, IEEE P1363
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systems EMSA2 and EMSA5
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Diffie-Hellman (DH), Unified Diffie-Hellman
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key agreement schemes (DH2), Menezes-Qu-Vanstone (MQV), LUCDIF,
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XTR-DH
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elliptic curve cryptography ECDSA, ECNR, ECIES, ECDH, ECMQV
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insecure or obsolescent MD2, MD4, MD5, Panama Hash, DES, ARC4, SEAL
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algorithms retained for backwards 3.0, WAKE, WAKE-OFB, DESX (DES-XEX3), RC2,
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compatibility and historical SAFER, 3-WAY, GOST, SHARK, CAST-128, Square
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value
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Other features include:
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* pseudo random number generators (PRNG): ANSI X9.17 appendix C, RandomPool
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* password based key derivation functions: PBKDF1 and PBKDF2 from PKCS #5,
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PBKDF from PKCS #12 appendix B
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* Shamir's secret sharing scheme and Rabin's information dispersal algorithm
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(IDA)
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* fast multi-precision integer (bignum) and polynomial operations
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* finite field arithmetics, including GF(p) and GF(2^n)
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* prime number generation and verification
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* useful non-cryptographic algorithms
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+ DEFLATE (RFC 1951) compression/decompression with gzip (RFC 1952) and
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zlib (RFC 1950) format support
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+ hex, base-32, and base-64 coding/decoding
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+ 32-bit CRC and Adler32 checksum
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* class wrappers for these operating system features (optional):
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+ high resolution timers on Windows, Unix, and Mac OS
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+ Berkeley and Windows style sockets
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+ Windows named pipes
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+ /dev/random, /dev/urandom, /dev/srandom
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+ Microsoft's CryptGenRandom on Windows
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* A high level interface for most of the above, using a filter/pipeline
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metaphor
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* benchmarks and validation testing
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* x86, x86-64 (x64), MMX, and SSE2 assembly code for the most commonly used
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algorithms, with run-time CPU feature detection and code selection
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* some versions are available in FIPS 140-2 validated form
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You are welcome to use it for any purpose without paying me, but see
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License.txt for the fine print.
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The following compilers are supported for this release. Please visit
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http://www.cryptopp.com the most up to date build instructions and porting notes.
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* MSVC 6.0 - 2008
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* GCC 3.3 - 4.3
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* C++Builder 2009
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* Intel C++ Compiler 9 - 11
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* Sun Studio 12 (CC 5.9)
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*** Important Usage Notes ***
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1. If a constructor for A takes a pointer to an object B (except primitive
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types such as int and char), then A owns B and will delete B at A's
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destruction. If a constructor for A takes a reference to an object B,
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then the caller retains ownership of B and should not destroy it until
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A no longer needs it.
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2. Crypto++ is thread safe at the class level. This means you can use
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Crypto++ safely in a multithreaded application, but you must provide
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synchronization when multiple threads access a common Crypto++ object.
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*** MSVC-Specific Information ***
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On Windows, Crypto++ can be compiled into 3 forms: a static library
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including all algorithms, a DLL with only FIPS Approved algorithms, and
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a static library with only algorithms not in the DLL.
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(FIPS Approved means Approved according to the FIPS 140-2 standard.)
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The DLL may be used by itself, or it may be used together with the second
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form of the static library. MSVC project files are included to build
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all three forms, and sample applications using each of the three forms
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are also included.
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To compile Crypto++ with MSVC, open the "cryptest.dsw" (for MSVC 6 and MSVC .NET
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2003) or "cryptest.sln" (for MSVC .NET 2005) workspace file and build one or
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more of the following projects:
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cryptdll - This builds the DLL. Please note that if you wish to use Crypto++
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as a FIPS validated module, you must use a pre-built DLL that has undergone
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the FIPS validation process instead of building your own.
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dlltest - This builds a sample application that only uses the DLL.
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cryptest Non-DLL-Import Configuration - This builds the full static library
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along with a full test driver.
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cryptest DLL-Import Configuration - This builds a static library containing
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only algorithms not in the DLL, along with a full test driver that uses
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both the DLL and the static library.
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To use the Crypto++ DLL in your application, #include "dll.h" before including
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any other Crypto++ header files, and place the DLL in the same directory as
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your .exe file. dll.h includes the line #pragma comment(lib, "cryptopp")
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so you don't have to explicitly list the import library in your project
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settings. To use a static library form of Crypto++, specify it as
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an additional library to link with in your project settings.
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In either case you should check the compiler options to
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make sure that the library and your application are using the same C++
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run-time libraries and calling conventions.
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*** DLL Memory Management ***
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Because it's possible for the Crypto++ DLL to delete objects allocated
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by the calling application, they must use the same C++ memory heap. Three
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methods are provided to achieve this.
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1. The calling application can tell Crypto++ what heap to use. This method
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is required when the calling application uses a non-standard heap.
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2. Crypto++ can tell the calling application what heap to use. This method
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is required when the calling application uses a statically linked C++ Run
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Time Library. (Method 1 does not work in this case because the Crypto++ DLL
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is initialized before the calling application's heap is initialized.)
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3. Crypto++ can automatically use the heap provided by the calling application's
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dynamically linked C++ Run Time Library. The calling application must
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make sure that the dynamically linked C++ Run Time Library is initialized
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before Crypto++ is loaded. (At this time it is not clear if it is possible
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to control the order in which DLLs are initialized on Windows 9x machines,
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so it might be best to avoid using this method.)
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When Crypto++ attaches to a new process, it searches all modules loaded
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into the process space for exported functions "GetNewAndDeleteForCryptoPP"
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and "SetNewAndDeleteFromCryptoPP". If one of these functions is found,
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Crypto++ uses methods 1 or 2, respectively, by calling the function.
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Otherwise, method 3 is used.
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*** GCC-Specific Information ***
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A makefile is included for you to compile Crypto++ with GCC. Make sure
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you are using GNU Make and GNU ld. The make process will produce two files,
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libcryptopp.a and cryptest.exe. Run "cryptest.exe v" for the validation
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suite.
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*** Documentation and Support ***
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Crypto++ is documented through inline comments in header files, which are
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processed through Doxygen to produce an HTML reference manual. You can find
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a link to the manual from http://www.cryptopp.com. Also at that site is
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the Crypto++ FAQ, which you should browse through before attempting to
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use this library, because it will likely answer many of questions that
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may come up.
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If you run into any problems, please try the Crypto++ mailing list.
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The subscription information and the list archive are available on
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http://www.cryptopp.com. You can also email me directly by visiting
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http://www.weidai.com, but you will probably get a faster response through
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the mailing list.
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*** History ***
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1.0 - First public release. Withdrawn at the request of RSA DSI.
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- included Blowfish, BBS, DES, DH, Diamond, DSA, ElGamal, IDEA,
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MD5, RC4, RC5, RSA, SHA, WAKE, secret sharing, DEFLATE compression
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- had a serious bug in the RSA key generation code.
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1.1 - Removed RSA, RC4, RC5
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- Disabled calls to RSAREF's non-public functions
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- Minor bugs fixed
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2.0 - a completely new, faster multiprecision integer class
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- added MD5-MAC, HAVAL, 3-WAY, TEA, SAFER, LUC, Rabin, BlumGoldwasser,
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elliptic curve algorithms
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- added the Lucas strong probable primality test
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- ElGamal encryption and signature schemes modified to avoid weaknesses
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- Diamond changed to Diamond2 because of key schedule weakness
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- fixed bug in WAKE key setup
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- SHS class renamed to SHA
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- lots of miscellaneous optimizations
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2.1 - added Tiger, HMAC, GOST, RIPE-MD160, LUCELG, LUCDIF, XOR-MAC,
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OAEP, PSSR, SHARK
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- added precomputation to DH, ElGamal, DSA, and elliptic curve algorithms
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- added back RC5 and a new RSA
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- optimizations in elliptic curves over GF(p)
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- changed Rabin to use OAEP and PSSR
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- changed many classes to allow copy constructors to work correctly
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- improved exception generation and handling
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2.2 - added SEAL, CAST-128, Square
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- fixed bug in HAVAL (padding problem)
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- fixed bug in triple-DES (decryption order was reversed)
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- fixed bug in RC5 (couldn't handle key length not a multiple of 4)
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- changed HMAC to conform to RFC-2104 (which is not compatible
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with the original HMAC)
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- changed secret sharing and information dispersal to use GF(2^32)
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instead of GF(65521)
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- removed zero knowledge prover/verifier for graph isomorphism
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- removed several utility classes in favor of the C++ standard library
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2.3 - ported to EGCS
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- fixed incomplete workaround of min/max conflict in MSVC
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3.0 - placed all names into the "CryptoPP" namespace
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- added MD2, RC2, RC6, MARS, RW, DH2, MQV, ECDHC, CBC-CTS
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- added abstract base classes PK_SimpleKeyAgreementDomain and
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PK_AuthenticatedKeyAgreementDomain
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- changed DH and LUCDIF to implement the PK_SimpleKeyAgreementDomain
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interface and to perform domain parameter and key validation
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- changed interfaces of PK_Signer and PK_Verifier to sign and verify
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messages instead of message digests
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- changed OAEP to conform to PKCS#1 v2.0
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- changed benchmark code to produce HTML tables as output
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- changed PSSR to track IEEE P1363a
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- renamed ElGamalSignature to NR and changed it to track IEEE P1363
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- renamed ECKEP to ECMQVC and changed it to track IEEE P1363
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- renamed several other classes for clarity
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- removed support for calling RSAREF
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- removed option to compile old SHA (SHA-0)
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- removed option not to throw exceptions
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3.1 - added ARC4, Rijndael, Twofish, Serpent, CBC-MAC, DMAC
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- added interface for querying supported key lengths of symmetric ciphers
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and MACs
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- added sample code for RSA signature and verification
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- changed CBC-CTS to be compatible with RFC 2040
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- updated SEAL to version 3.0 of the cipher specification
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- optimized multiprecision squaring and elliptic curves over GF(p)
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- fixed bug in MARS key setup
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- fixed bug with attaching objects to Deflator
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3.2 - added DES-XEX3, ECDSA, DefaultEncryptorWithMAC
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- renamed DES-EDE to DES-EDE2 and TripleDES to DES-EDE3
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- optimized ARC4
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- generalized DSA to allow keys longer than 1024 bits
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- fixed bugs in GF2N and ModularArithmetic that can cause calculation errors
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- fixed crashing bug in Inflator when given invalid inputs
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- fixed endian bug in Serpent
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- fixed padding bug in Tiger
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4.0 - added Skipjack, CAST-256, Panama, SHA-2 (SHA-256, SHA-384, and SHA-512),
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and XTR-DH
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- added a faster variant of Rabin's Information Dispersal Algorithm (IDA)
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- added class wrappers for these operating system features:
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- high resolution timers on Windows, Unix, and MacOS
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- Berkeley and Windows style sockets
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- Windows named pipes
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- /dev/random and /dev/urandom on Linux and FreeBSD
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- Microsoft's CryptGenRandom on Windows
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- added support for SEC 1 elliptic curve key format and compressed points
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- added support for X.509 public key format (subjectPublicKeyInfo) for
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RSA, DSA, and elliptic curve schemes
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- added support for DER and OpenPGP signature format for DSA
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- added support for ZLIB compressed data format (RFC 1950)
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- changed elliptic curve encryption to use ECIES (as defined in SEC 1)
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- changed MARS key schedule to reflect the latest specification
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- changed BufferedTransformation interface to support multiple channels
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and messages
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- changed CAST and SHA-1 implementations to use public domain source code
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- fixed bug in StringSource
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- optmized multi-precision integer code for better performance
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4.1 - added more support for the recommended elliptic curve parameters in SEC 2
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- added Panama MAC, MARC4
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- added IV stealing feature to CTS mode
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- added support for PKCS #8 private key format for RSA, DSA, and elliptic
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curve schemes
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- changed Deflate, MD5, Rijndael, and Twofish to use public domain code
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- fixed a bug with flushing compressed streams
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- fixed a bug with decompressing stored blocks
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- fixed a bug with EC point decompression using non-trinomial basis
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- fixed a bug in NetworkSource::GeneralPump()
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- fixed a performance issue with EC over GF(p) decryption
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- fixed syntax to allow GCC to compile without -fpermissive
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- relaxed some restrictions in the license
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4.2 - added support for longer HMAC keys
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- added MD4 (which is not secure so use for compatibility purposes only)
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- added compatibility fixes/workarounds for STLport 4.5, GCC 3.0.2,
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and MSVC 7.0
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- changed MD2 to use public domain code
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- fixed a bug with decompressing multiple messages with the same object
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- fixed a bug in CBC-MAC with MACing multiple messages with the same object
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- fixed a bug in RC5 and RC6 with zero-length keys
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- fixed a bug in Adler32 where incorrect checksum may be generated
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5.0 - added ESIGN, DLIES, WAKE-OFB, PBKDF1 and PBKDF2 from PKCS #5
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- added key validation for encryption and signature public/private keys
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- renamed StreamCipher interface to SymmetricCipher, which is now implemented
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by both stream ciphers and block cipher modes including ECB and CBC
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- added keying interfaces to support resetting of keys and IVs without
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having to destroy and recreate objects
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- changed filter interface to support non-blocking input/output
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- changed SocketSource and SocketSink to use overlapped I/O on Microsoft Windows
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- grouped related classes inside structs to help templates, for example
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AESEncryption and AESDecryption are now AES::Encryption and AES::Decryption
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- where possible, typedefs have been added to improve backwards
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compatibility when the CRYPTOPP_MAINTAIN_BACKWARDS_COMPATIBILITY macro is defined
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- changed Serpent, HAVAL and IDEA to use public domain code
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- implemented SSE2 optimizations for Integer operations
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- fixed a bug in HMAC::TruncatedFinal()
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- fixed SKIPJACK byte ordering following NIST clarification dated 5/9/02
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5.01 - added known answer test for X9.17 RNG in FIPS 140 power-up self test
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- submitted to NIST/CSE, but not publicly released
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5.02 - changed EDC test to MAC integrity check using HMAC/SHA1
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- improved performance of integrity check
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- added blinding to defend against RSA timing attack
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5.03 - created DLL version of Crypto++ for FIPS 140-2 validation
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- fixed vulnerabilities in GetNextIV for CTR and OFB modes
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5.0.4 - Removed DES, SHA-256, SHA-384, SHA-512 from DLL
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5.1 - added PSS padding and changed PSSR to track IEEE P1363a draft standard
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||
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- added blinding for RSA and Rabin to defend against timing attacks
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||
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on decryption operations
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||
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- changed signing and decryption APIs to support the above
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||
|
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- changed WaitObjectContainer to allow waiting for more than 64
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||
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objects at a time on Win32 platforms
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||
|
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- fixed a bug in CBC and ECB modes with processing non-aligned data
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||
|
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- fixed standard conformance bugs in DLIES (DHAES mode) and RW/EMSA2
|
||
|
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signature scheme (these fixes are not backwards compatible)
|
||
|
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- fixed a number of compiler warnings, minor bugs, and portability problems
|
||
|
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- removed Sapphire
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||
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5.2 - merged in changes for 5.01 - 5.0.4
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||
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- added support for using encoding parameters and key derivation parameters
|
||
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with public key encryption (implemented by OAEP and DL/ECIES)
|
||
|
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- added Camellia, SHACAL-2, Two-Track-MAC, Whirlpool, RIPEMD-320,
|
||
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RIPEMD-128, RIPEMD-256, Base-32 coding, FIPS variant of CFB mode
|
||
|
|
- added ThreadUserTimer for timing thread CPU usage
|
||
|
|
- added option for password-based key derivation functions
|
||
|
|
to iterate until a mimimum elapsed thread CPU time is reached
|
||
|
|
- added option (on by default) for DEFLATE compression to detect
|
||
|
|
uncompressible files and process them more quickly
|
||
|
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- improved compatibility and performance on 64-bit platforms,
|
||
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including Alpha, IA-64, x86-64, PPC64, Sparc64, and MIPS64
|
||
|
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- fixed ONE_AND_ZEROS_PADDING to use 0x80 instead 0x01 as padding.
|
||
|
|
- fixed encoding/decoding of PKCS #8 privateKeyInfo to properly
|
||
|
|
handle optional attributes
|
||
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|
||
|
|
5.2.1 - fixed bug in the "dlltest" DLL testing program
|
||
|
|
- fixed compiling with STLport using VC .NET
|
||
|
|
- fixed compiling with -fPIC using GCC
|
||
|
|
- fixed compiling with -msse2 on systems without memalign()
|
||
|
|
- fixed inability to instantiate PanamaMAC
|
||
|
|
- fixed problems with inline documentation
|
||
|
|
|
||
|
|
5.2.2 - added SHA-224
|
||
|
|
- put SHA-256, SHA-384, SHA-512, RSASSA-PSS into DLL
|
||
|
|
|
||
|
|
5.2.3 - fixed issues with FIPS algorithm test vectors
|
||
|
|
- put RSASSA-ISO into DLL
|
||
|
|
|
||
|
|
5.3 - ported to MSVC 2005 with support for x86-64
|
||
|
|
- added defense against AES timing attacks, and more AES test vectors
|
||
|
|
- changed StaticAlgorithmName() of Rijndael to "AES", CTR to "CTR"
|
||
|
|
|
||
|
|
5.4 - added Salsa20
|
||
|
|
- updated Whirlpool to version 3.0
|
||
|
|
- ported to GCC 4.1, Sun C++ 5.8, and Borland C++Builder 2006
|
||
|
|
|
||
|
|
5.5 - added VMAC and Sosemanuk (with x86-64 and SSE2 assembly)
|
||
|
|
- improved speed of integer arithmetic, AES, SHA-512, Tiger, Salsa20,
|
||
|
|
Whirlpool, and PANAMA cipher using assembly (x86-64, MMX, SSE2)
|
||
|
|
- optimized Camellia and added defense against timing attacks
|
||
|
|
- updated benchmarks code to show cycles per byte and to time key/IV setup
|
||
|
|
- started using OpenMP for increased multi-core speed
|
||
|
|
- enabled GCC optimization flags by default in GNUmakefile
|
||
|
|
- added blinding and computational error checking for RW signing
|
||
|
|
- changed RandomPool, X917RNG, GetNextIV, DSA/NR/ECDSA/ECNR to reduce
|
||
|
|
the risk of reusing random numbers and IVs after virtual machine state
|
||
|
|
rollback
|
||
|
|
- changed default FIPS mode RNG from AutoSeededX917RNG<DES_EDE3> to
|
||
|
|
AutoSeededX917RNG<AES>
|
||
|
|
- fixed PANAMA cipher interface to accept 256-bit key and 256-bit IV
|
||
|
|
- moved MD2, MD4, MD5, PanamaHash, ARC4, WAKE_CFB into the namespace "Weak"
|
||
|
|
- removed HAVAL, MD5-MAC, XMAC
|
||
|
|
|
||
|
|
5.5.1 - fixed VMAC validation failure on 32-bit big-endian machines
|
||
|
|
|
||
|
|
5.5.2 - ported x64 assembly language code for AES, Salsa20, Sosemanuk, and Panama
|
||
|
|
to MSVC 2005 (using MASM since MSVC doesn't support inline assembly on x64)
|
||
|
|
- fixed Salsa20 initialization crash on non-SSE2 machines
|
||
|
|
- fixed Whirlpool crash on Pentium 2 machines
|
||
|
|
- fixed possible branch prediction analysis (BPA) vulnerability in
|
||
|
|
MontgomeryReduce(), which may affect security of RSA, RW, LUC
|
||
|
|
- fixed link error with MSVC 2003 when using "debug DLL" form of runtime library
|
||
|
|
- fixed crash in SSE2_Add on P4 machines when compiled with
|
||
|
|
MSVC 6.0 SP5 with Processor Pack
|
||
|
|
- ported to MSVC 2008, GCC 4.2, Sun CC 5.9, Intel C++ Compiler 10.0,
|
||
|
|
and Borland C++Builder 2007
|
||
|
|
|
||
|
|
5.6 - added AuthenticatedSymmetricCipher interface class and Filter wrappers
|
||
|
|
- added CCM, GCM (with SSE2 assembly), EAX, CMAC, XSalsa20, and SEED
|
||
|
|
- added support for variable length IVs
|
||
|
|
- improved AES and SHA-256 speed on x86 and x64
|
||
|
|
- fixed incorrect VMAC computation on message lengths
|
||
|
|
that are >64 mod 128 (x86 assembly version is not affected)
|
||
|
|
- fixed compiler error in vmac.cpp on x86 with GCC -fPIC
|
||
|
|
- fixed run-time validation error on x86-64 with GCC 4.3.2 -O2
|
||
|
|
- fixed HashFilter bug when putMessage=true
|
||
|
|
- removed WORD64_AVAILABLE; compiler support for 64-bit int is now required
|
||
|
|
- ported to GCC 4.3, C++Builder 2009, Sun CC 5.10, Intel C++ Compiler 11
|
||
|
|
|
||
|
|
Written by Wei Dai
|