HashAlgorithm.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

创建哈希算法实现的实例。

重载

名称 说明
Create()
已过时.
已过时.

创建哈希算法的默认实现的实例。
Create(String)
已过时.

创建哈希算法的指定实现的实例。

Create()

Source:
HashAlgorithm.cs
Source:
HashAlgorithm.cs
Source:
HashAlgorithm.cs
Source:
HashAlgorithm.cs
Source:
HashAlgorithm.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

创建哈希算法的默认实现的实例。

public:
 static System::Security::Cryptography::HashAlgorithm ^ 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.HashAlgorithm 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.HashAlgorithm Create();
public static System.Security.Cryptography.HashAlgorithm 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.HashAlgorithm
[<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.HashAlgorithm
static member Create : unit -> System.Security.Cryptography.HashAlgorithm
Public Shared Function Create () As HashAlgorithm

返回

HashAlgorithm

一个新 SHA1CryptoServiceProvider 实例，除非使用 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 SHA1CryptoServiceProvider 哈希算法的实现。 如果要指定其他实现，请使用 Create(String) 重载，从而指定算法名称。 加密配置系统定义默认实现 HashAlgorithm。

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:
HashAlgorithm.cs
Source:
HashAlgorithm.cs
Source:
HashAlgorithm.cs
Source:
HashAlgorithm.cs
Source:
HashAlgorithm.cs

注意

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

创建哈希算法的指定实现的实例。

public:
 static System::Security::Cryptography::HashAlgorithm ^ Create(System::String ^ hashName);
[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.HashAlgorithm? Create(string hashName);
public static System.Security.Cryptography.HashAlgorithm? Create(string hashName);
[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The default algorithm implementations might be removed, use strong type references like 'RSA.Create()' instead.")]
public static System.Security.Cryptography.HashAlgorithm? Create(string hashName);
public static System.Security.Cryptography.HashAlgorithm Create(string hashName);
[<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.HashAlgorithm
static member Create : string -> System.Security.Cryptography.HashAlgorithm
[<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.HashAlgorithm
Public Shared Function Create (hashName As String) As HashAlgorithm

参数

hashName
String

要使用的哈希算法实现。 下表显示了参数的有效值 hashName 及其映射到的算法。

参数值 实现
沙 SHA1CryptoServiceProvider
SHA1 SHA1CryptoServiceProvider
System.Security.Cryptography.SHA1 SHA1CryptoServiceProvider
System.Security.Cryptography.HashAlgorithm SHA1CryptoServiceProvider
MD5 MD5CryptoServiceProvider
System.Security.Cryptography.MD5 MD5CryptoServiceProvider
SHA256 SHA256Managed
SHA-256 SHA256Managed
System.Security.Cryptography.SHA256 SHA256Managed
SHA384 SHA384Managed
SHA-384 SHA384Managed
System.Security.Cryptography.SHA384 SHA384Managed
SHA512 SHA512Managed
SHA-512 SHA512Managed
System.Security.Cryptography.SHA512 SHA512Managed

返回

HashAlgorithm

指定哈希算法的新实例，或者 null 如果 hashName 不是有效的哈希算法。

属性
RequiresUnreferencedCodeAttribute ObsoleteAttribute

适用于