HashAlgorithm.Create 方法
定义
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
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 |
---|---|
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 |
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