HashAlgorithm.Create 方法

参考

定义

命名空间:: System.Security.Cryptography

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

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

创建哈希算法实现的实例。

重载

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

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

HashAlgorithm

一个新的 SHA1CryptoServiceProvider 实例，除非已使用更改默认设置。

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，以便指定算法名称。加密配置系统定义的默认实现 HashAlgorithm。

由于 SHA1 出现冲突问题，Microsoft 建议使用基于 SHA256 或更好的安全模型。

适用于

Create(String)

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);

public static System.Security.Cryptography.HashAlgorithm? Create(string hashName);

[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);

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

[<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

Public Shared Function Create (hashName As String) As HashAlgorithm

参数

hashName: String

要使用的哈希算法的实现。下表显示 hashName 参数的有效值以及它们映射到的算法。

参数值	实现为其类型参数
SHA	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

HashAlgorithm

所指定哈希算法，或 null 的新实例，如果 hashName 不是有效哈希算法。

属性: ObsoleteAttribute

适用于

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通过

Create()

返回

例外

注解

适用于

Create(String)

参数

返回

适用于