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MD2 and Message-Digest
* RFC 1319, The MD2 Message-Digest Algorithm

MD2 and is
MD2 is specified in RFC 1319.
Although MD2 is no longer considered secure, even it remains in use in public key infrastructures as part of certificates generated with MD2 and RSA.
* N. Rogier, Pascal Chauvaud, The compression function of MD2 is not collision free, Selected Areas in Cryptography-SAC ' 95 Ottawa, Canada, May 18 – 19, 1995 ( workshop record ).
* N. Rogier, Pascal Chauvaud, MD2 is not Secure without the Checksum Byte, Designs, Codes and Cryptography, 12 ( 3 ), pp245 – 251, 1997.
* Frédéric Muller, The MD2 Hash Function is Not One-Way, ASIACRYPT 2004, pp214 – 229.
The animation features in the MD3 format are superior to those in id Tech 2's MD2 format because an animator is able to have a variable number of key frames per second instead of MD2's standard 10 key frames per second.

MD2 and hash
The following demonstrates a 43-byte ASCII input and the corresponding MD2 hash:
As the result of the avalanche effect in MD2, even a small change in the input message will ( with overwhelming probability ) result in a completely different hash.
The author concludes, " MD2 can no longer be considered a secure one-way hash function ".
In 2009, MD2 was shown to be vulnerable to a collision attack with time complexity of 2 < sup > 63. 3 </ sup > compression function evaluations and memory requirements of 2 < sup > 52 </ sup > hash values.
It further supports hash functions SHA, MD5, MD4, and MD2.

MD2 and function
Rogier and Chauvaud ( 1997 ) described collisions of MD2's compression function, although they were unable to extend the attack to the full MD2.
In 2004, MD2 was shown to be vulnerable to a preimage attack with time complexity equivalent to 2 < sup > 104 </ sup > applications of the compression function ( Muller, 2004 ).
In 2008, MD2 has further improvements on a preimage attack with time complexity of 2 < sup > 73 </ sup > compression function evaluations and memory requirements of 2 < sup > 73 </ sup > message blocks.

MD2 and .
It will load and display 3ds Max files, Quake 2 MD2 Models, Maya. obj objects, Quake 3. bsp maps, Milkshape3D objects, and DirectX. x files.
LPS acts as the prototypical endotoxin because it binds the CD14 / TLR4 / MD2 receptor complex, which promotes the secretion of pro-inflammatory cytokines in many cell types, but especially in macrophages and B cells.
: MD5, MD2, SHA-1, SHA-2, RIPEMD-160, MDC-2, GOST R 34. 11-94
The 128-bit ( 16-byte ) MD2 hashes ( also termed message digests ) are typically represented as 32-digit hexadecimal numbers.
In 2009, security updates were issued disabling MD2 in OpenSSL, GnuTLS, and Network Security Services.
* Lars R. Knudsen and John Erik Mathiassen, Preimage and Collision Attacks on MD2.
* Online Char ( ASCII ), HEX, Binary, Base64, etc ... Encoder / Decoder with MD2, MD4, MD5, SHA1 + 2, etc.

Message-Digest and Algorithm
The MD4 Message-Digest Algorithm is a cryptographic hash function developed by Ronald Rivest in 1990.
The following test vectors are defined in RFC 1320 ( The MD4 Message-Digest Algorithm )
de: Message-Digest Algorithm 4
de: Message-Digest Algorithm 2

Algorithm and is
While this loss of precision may be tolerable and viewed as a minor flaw of Algorithm I, it is easy to find data that reveal a major flaw in the naive algorithm: Take the sample to be ( 10 < sup > 9 </ sup > + 4, 10 < sup > 9 </ sup > + 7, 10 < sup > 9 </ sup > + 13, 10 < sup > 9 </ sup > + 16 ).
Again the estimated population variance of 30 is computed correctly by Algorithm II, but the naive algorithm now computes it as − 170. 66666666666666.
This is a serious problem with Algorithm I and is due to catastrophic cancellation in the subtraction of two similar numbers at the final stage of the algorithm.
Algorithm analysis is an important part of a broader computational complexity theory, which provides theoretical estimates for the resources needed by any algorithm which solves a given computational problem.
The reference model given by the ITU-T and ATM Forum for UPC and NPC is the Generic Cell Rate Algorithm ( GCRA ), which is a version of the leaky bucket algorithm.
( membership problem is even polynomially decidable-see CYK algorithm and Earley's Algorithm )
A standard algorithm for collating any collection of strings composed of any standard Unicode symbols is the Unicode Collation Algorithm.
* the Elliptic Curve Digital Signature Algorithm ( ECDSA ) is based on the Digital Signature Algorithm,
In cryptography, the International Data Encryption Algorithm ( IDEA ) is a block cipher designed by James Massey of ETH Zurich and Xuejia Lai and was first described in 1991.
Diffie – Hellman key exchange is the most widely used public key distribution system, while the Digital Signature Algorithm is the most widely used digital signature system.
In cryptography, Triple DES is the common name for the Triple Data Encryption Algorithm ( TDEA or Triple DEA ) block cipher, which applies the Data Encryption Standard ( DES ) cipher algorithm three times to each data block.
The Triple Data Encryption Algorithm ( TDEA ) is defined in each of:
MAD ( Michigan Algorithm Decoder ) is a programming language and compiler for the IBM 704 and later the IBM 709, IBM 7090, IBM 7040, UNIVAC 1107, UNIVAC 1108, Philco 210-211, and eventually the IBM S / 370 mainframe computers.
The Digital Signature Algorithm is a variant of the ElGamal signature scheme, which should not be confused with ElGamal encryption.
The Digital Signature Algorithm ( DSA ) is a United States Federal Government standard or FIPS for digital signatures.
* MAD / I ( an expanded version of the Michigan Algorithm Decoder for the IBM S / 360 architecture that is not compatible with the original 7090 version of MAD, see also GOM above )
The Digital Signature Algorithm is based on CDH in a prime order subgroup.
In its basic structure it is similar to Dijkstra's Algorithm, but instead of greedily selecting the minimum-weight node not yet processed to relax, it simply relaxes all the edges, and does this | V | − 1 times, where | V | is the number of vertices in the graph.
In cryptography, SEAL ( Software-Optimized Encryption Algorithm ) is a very fast stream cipher optimised for machines with a 32-bit word size and plenty of RAM.
The Symbology Decoding Algorithm for barcode scanners is the first symbology-based algorithm for decoding.

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