HashAlgorithm.Create 方法

定义

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

返回

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

属性

例外

.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
SHASHA1CryptoServiceProvider
SHA1SHA1CryptoServiceProvider
System.Security.Cryptography.SHA1SHA1CryptoServiceProvider
System.Security.Cryptography.HashAlgorithmSHA1CryptoServiceProvider
MD5MD5CryptoServiceProvider
System.Security.Cryptography.MD5MD5CryptoServiceProvider
SHA256SHA256Managed
SHA-256SHA256Managed
System.Security.Cryptography.SHA256SHA256Managed
SHA384SHA384Managed
SHA-384SHA384Managed
System.Security.Cryptography.SHA384SHA384Managed
SHA512SHA512Managed
SHA-512SHA512Managed
System.Security.Cryptography.SHA512SHA512Managed

返回

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

适用于