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HMAC::Create Method (String)

.NET Framework 3.5

Other Versions

Updated: January 2011

Creates an instance of the specified implementation of a Hash-based Message Authentication Code (HMAC).

Namespace: System.Security.Cryptography
Assembly: mscorlib (in mscorlib.dll)

Syntax

C++

JScript

public:
static HMAC^ Create(
	String^ algorithmName
)

Parameters

algorithmName

Type: System::String

The HMAC implementation to use. The following table shows the valid values for the algorithmName parameter and the algorithms they map to.

Parameter value	Implements
System.Security.Cryptography.HMAC	HMACSHA1
System.Security.Cryptography.KeyedHashAlgorithm	HMACSHA1
HMACMD5	HMACMD5
System.Security.Cryptography.HMACMD5	HMACMD5
HMACRIPEMD160	HMACRIPEMD160
System.Security.Cryptography.HMACRIPEMD160	[T:System.Security.Cryptography. HMACRIPEMD160]
HMACSHA1	HMACSHA1
System.Security.Cryptography.HMACSHA1	[T:System.Security.Cryptography. HMACSHA1]
HMACSHA256	HMACSHA256
System.Security.Cryptography.HMACSHA256	HMACSHA256
HMACSHA384	HMACSHA384
System.Security.Cryptography.HMACSHA384	HMACSHA384
HMACSHA512	HMACSHA512
System.Security.Cryptography.HMACSHA512	HMACSHA512
MACTripleDES	[T:System.Security.Cryptography. MACTripleDES]
System.Security.Cryptography.MACTripleDES	MACTripleDES

Return Value

Type: System.Security.Cryptography::HMAC
A new instance of the specified HMAC implementation.

Remarks

HMAC supports a number of hash algorithms, including MD5, SHA-1, SHA-256, and RIPEMD160. For the full list, see the supported values for the algorithmName parameter.

Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Version Information

.NET Framework

Supported in: 3.5, 3.0, 2.0

Reference

HMAC Class

HMAC Members

Create Overload

System.Security.Cryptography Namespace

Change History

Date	History	Reason
January 2011	Added list of algorithm names.	Customer feedback.

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