Assembly: mscorlib (in mscorlib.dll)
/** @attribute SerializableAttribute() */ /** @attribute ComVisibleAttribute(true) */ public enum AssemblyHashAlgorithm
|MD5||Retrieves the MD5 message-digest algorithm. MD5 was developed by Rivest in 1991. It is basically MD4 with safety-belts and while it is slightly slower than MD4, it helps provide more security. The algorithm consists of four distinct rounds, which has a slightly different design from that of MD4. Message-digest size, as well as padding requirements, remain the same.|
|None||A mask indicating that there is no hash algorithm. If you specify None for a multi-module assembly, the common language runtime defaults to the SHA1 algorithm, since multi-module assemblies need to generate a hash.|
|SHA1||A mask used to retrieve a revision of the Secure Hash Algorithm that corrects an unpublished flaw in SHA.|
A hash functionH is a transformation that takes an input m and returns a fixed-size string, which is called the hash value h (that is, h = H (m)). Hash functions with just this property have a variety of general computational uses, but when employed in cryptography, the hash functions are usually chosen to have some additional properties.
The basic requirements for a cryptographic hash function are:
The input can be of any length.
The output has a fixed length.
H (x) is relatively easy to compute for any given x.
H (x) is one-way.
H (x) is collision-free.
The hash value represents concisely the longer message or document from which it was computed; this value is called the message digest. You can think of a message digest as a digital fingerprint of the larger document. Examples of well-known hash functions are MD2 and and SHA.
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter EditionThe Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.