HMAC.Create 方法

定义

命名空间:: System.Security.Cryptography

程序集:: netstandard.dll, System.Security.Cryptography.dll

程序集:: netstandard.dll, System.Security.Cryptography.Primitives.dll

程序集:: System.Security.Cryptography.Primitives.dll

程序集:: mscorlib.dll

程序集:: netstandard.dll

重要

一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。

创建基于哈希的消息身份验证代码（HMAC）的实现的实例。

重载

名称	说明
Create()	已过时. 已过时. 创建基于哈希的消息身份验证代码（HMAC）的默认实现的实例。
Create(String)	已过时. 创建基于哈希的消息身份验证代码（HMAC）的指定实现的实例。

Create()

Source:: HMAC.cs

Source:: HMAC.cs

Source:: HMAC.cs

Source:: HMAC.cs

Source:: HMAC.cs

注意

The default implementation of this cryptography algorithm is not supported.

注意

The default implementation of this cryptography algorithm is not supported

创建基于哈希的消息身份验证代码（HMAC）的默认实现的实例。

public:
 static System::Security::Cryptography::HMAC ^ Create();

[System.Obsolete("The default implementation of this cryptography algorithm is not supported.", DiagnosticId="SYSLIB0007", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
public static System.Security.Cryptography.HMAC Create();

[System.Obsolete("The default implementation of this cryptography algorithm is not supported", DiagnosticId="SYSLIB0007", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
public static System.Security.Cryptography.HMAC Create();

public static System.Security.Cryptography.HMAC Create();

[<System.Obsolete("The default implementation of this cryptography algorithm is not supported.", DiagnosticId="SYSLIB0007", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
static member Create : unit -> System.Security.Cryptography.HMAC

[<System.Obsolete("The default implementation of this cryptography algorithm is not supported", DiagnosticId="SYSLIB0007", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
static member Create : unit -> System.Security.Cryptography.HMAC

static member Create : unit -> System.Security.Cryptography.HMAC

Public Shared Function Create () As HMAC

HMAC

新的 SHA-1 实例，除非使用 <cryptoClass> 元素更改了默认设置。

属性: ObsoleteAttribute

例外

PlatformNotSupportedException

.NET Core 2.0 - 3.1 和 .NET 5 及更高版本：在所有情况下。

注解

此方法在 .NET 5 及更高版本中已过时。

默认情况下，此重载使用 HMAC 的 SHA-1 实现。如果要指定其他实现，请使用 Create(String) 重载，从而指定算法名称。

由于 SHA-1 冲突问题，Microsoft建议基于 SHA-256 或更高版本的安全模型。

适用于

Create(String)

Source:: HMAC.cs

Source:: HMAC.cs

Source:: HMAC.cs

Source:: HMAC.cs

Source:: HMAC.cs

注意

Cryptographic factory methods accepting an algorithm name are obsolete. Use the parameterless Create factory method on the algorithm type instead.

创建基于哈希的消息身份验证代码（HMAC）的指定实现的实例。

public:
 static System::Security::Cryptography::HMAC ^ Create(System::String ^ algorithmName);

[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The default algorithm implementations might be removed, use strong type references like 'RSA.Create()' instead.")]
[System.Obsolete("Cryptographic factory methods accepting an algorithm name are obsolete. Use the parameterless Create factory method on the algorithm type instead.", DiagnosticId="SYSLIB0045", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
public static System.Security.Cryptography.HMAC? Create(string algorithmName);

public static System.Security.Cryptography.HMAC? Create(string algorithmName);

[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The default algorithm implementations might be removed, use strong type references like 'RSA.Create()' instead.")]
public static System.Security.Cryptography.HMAC? Create(string algorithmName);

public static System.Security.Cryptography.HMAC Create(string algorithmName);

[<System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The default algorithm implementations might be removed, use strong type references like 'RSA.Create()' instead.")>]
[<System.Obsolete("Cryptographic factory methods accepting an algorithm name are obsolete. Use the parameterless Create factory method on the algorithm type instead.", DiagnosticId="SYSLIB0045", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
static member Create : string -> System.Security.Cryptography.HMAC

static member Create : string -> System.Security.Cryptography.HMAC

[<System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The default algorithm implementations might be removed, use strong type references like 'RSA.Create()' instead.")>]
static member Create : string -> System.Security.Cryptography.HMAC

Public Shared Function Create (algorithmName As String) As HMAC

参数

algorithmName: String

要使用的 HMAC 实现。下表显示了参数的有效值 algorithmName 及其映射到的算法。

参数值	实现
System.Security.Cryptography.HMAC	HMACSHA1
System.Security.Cryptography.KeyedHashAlgorithm	HMACSHA1
HMACMD5	HMACMD5
System.Security.Cryptography.HMACMD5	HMACMD5
HMACRIPEMD160	HMACRIPEMD160
System.Security.Cryptography.HMACRIPEMD160	HMACRIPEMD160
HMACSHA1	HMACSHA1
System.Security.Cryptography.HMACSHA1	HMACSHA1
HMACSHA256	HMACSHA256
System.Security.Cryptography.HMACSHA256	HMACSHA256
HMACSHA384	HMACSHA384
System.Security.Cryptography.HMACSHA384	HMACSHA384
HMACSHA512	HMACSHA512
System.Security.Cryptography.HMACSHA512	HMACSHA512
MACTripleDES	MACTripleDES
System.Security.Cryptography.MACTripleDES	MACTripleDES

HMAC

指定 HMAC 实现的新实例。

属性: RequiresUnreferencedCodeAttribute ObsoleteAttribute

注解

HMAC 支持许多哈希算法，包括 MD5、SHA-1、SHA-256 和 RIPEMD160。参数 algorithmName 的支持值的完整列表，请参阅。

由于 MD5 和 SHA-1 冲突问题，Microsoft建议基于 SHA-256 或更高版本的安全模型。

适用于

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HMAC.Create 方法

定义

重载

Create()

返回

例外

注解

适用于

Create(String)

参数

返回

注解

适用于