SHA1CryptoServiceProvider Class
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Caution
Derived cryptographic types are obsolete. Use the Create method on the base type instead.
Computes the SHA1 hash value for the input data using the implementation provided by the cryptographic service provider (CSP). This class cannot be inherited.
public ref class SHA1CryptoServiceProvider sealed : System::Security::Cryptography::SHA1
public sealed class SHA1CryptoServiceProvider : System.Security.Cryptography.SHA1
[System.Obsolete("Derived cryptographic types are obsolete. Use the Create method on the base type instead.", DiagnosticId="SYSLIB0021", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
public sealed class SHA1CryptoServiceProvider : System.Security.Cryptography.SHA1
[System.Runtime.InteropServices.ComVisible(true)]
public sealed class SHA1CryptoServiceProvider : System.Security.Cryptography.SHA1
type SHA1CryptoServiceProvider = class
inherit SHA1
[<System.Obsolete("Derived cryptographic types are obsolete. Use the Create method on the base type instead.", DiagnosticId="SYSLIB0021", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
type SHA1CryptoServiceProvider = class
inherit SHA1
[<System.Runtime.InteropServices.ComVisible(true)>]
type SHA1CryptoServiceProvider = class
inherit SHA1
Public NotInheritable Class SHA1CryptoServiceProvider
Inherits SHA1
- Inheritance
- Attributes
Remarks
The hash size for the SHA1CryptoServiceProvider class is 160 bits.
Important
This type implements the IDisposable interface. When you have finished using the type, you should dispose of it either directly or indirectly. To dispose of the type directly, call its Dispose method in a try
/catch
block. To dispose of it indirectly, use a language construct such as using
(in C#) or Using
(in Visual Basic). For more information, see the "Using an Object that Implements IDisposable" section in the IDisposable interface topic.
Due to collision problems with SHA1, Microsoft recommends a security model based on SHA256 or better.
Constructors
SHA1CryptoServiceProvider() |
Initializes a new instance of the SHA1CryptoServiceProvider class. |
Fields
HashSizeInBits |
The hash size produced by the SHA1 algorithm, in bits. (Inherited from SHA1) |
HashSizeInBytes |
The hash size produced by the SHA1 algorithm, in bytes. (Inherited from SHA1) |
HashSizeValue |
Represents the size, in bits, of the computed hash code. (Inherited from HashAlgorithm) |
HashValue |
Represents the value of the computed hash code. (Inherited from HashAlgorithm) |
State |
Represents the state of the hash computation. (Inherited from HashAlgorithm) |
Properties
CanReuseTransform |
Gets a value indicating whether the current transform can be reused. (Inherited from HashAlgorithm) |
CanTransformMultipleBlocks |
When overridden in a derived class, gets a value indicating whether multiple blocks can be transformed. (Inherited from HashAlgorithm) |
Hash |
Gets the value of the computed hash code. (Inherited from HashAlgorithm) |
HashSize |
Gets the size, in bits, of the computed hash code. (Inherited from HashAlgorithm) |
InputBlockSize |
When overridden in a derived class, gets the input block size. (Inherited from HashAlgorithm) |
OutputBlockSize |
When overridden in a derived class, gets the output block size. (Inherited from HashAlgorithm) |
Methods
Clear() |
Releases all resources used by the HashAlgorithm class. (Inherited from HashAlgorithm) |
ComputeHash(Byte[]) |
Computes the hash value for the specified byte array. (Inherited from HashAlgorithm) |
ComputeHash(Byte[], Int32, Int32) |
Computes the hash value for the specified region of the specified byte array. (Inherited from HashAlgorithm) |
ComputeHash(Stream) |
Computes the hash value for the specified Stream object. (Inherited from HashAlgorithm) |
ComputeHashAsync(Stream, CancellationToken) |
Asynchronously computes the hash value for the specified Stream object. (Inherited from HashAlgorithm) |
Dispose() |
Releases all resources used by the current instance of the HashAlgorithm class. (Inherited from HashAlgorithm) |
Dispose(Boolean) |
Releases the unmanaged resources used by the HashAlgorithm and optionally releases the managed resources. (Inherited from HashAlgorithm) |
Equals(Object) |
Determines whether the specified object is equal to the current object. (Inherited from Object) |
Finalize() |
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. |
GetHashCode() |
Serves as the default hash function. (Inherited from Object) |
GetType() |
Gets the Type of the current instance. (Inherited from Object) |
HashCore(Byte[], Int32, Int32) |
When overridden in a derived class, routes data written to the object into the hash algorithm for computing the hash. (Inherited from HashAlgorithm) |
HashCore(ReadOnlySpan<Byte>) |
Routes data written to the object into the hash algorithm for computing the hash. (Inherited from HashAlgorithm) |
HashFinal() |
When overridden in a derived class, finalizes the hash computation after the last data is processed by the cryptographic hash algorithm. (Inherited from HashAlgorithm) |
Initialize() |
Initializes an instance of SHA1CryptoServiceProvider. |
MemberwiseClone() |
Creates a shallow copy of the current Object. (Inherited from Object) |
ToString() |
Returns a string that represents the current object. (Inherited from Object) |
TransformBlock(Byte[], Int32, Int32, Byte[], Int32) |
Computes the hash value for the specified region of the input byte array and copies the specified region of the input byte array to the specified region of the output byte array. (Inherited from HashAlgorithm) |
TransformFinalBlock(Byte[], Int32, Int32) |
Computes the hash value for the specified region of the specified byte array. (Inherited from HashAlgorithm) |
TryComputeHash(ReadOnlySpan<Byte>, Span<Byte>, Int32) |
Attempts to compute the hash value for the specified byte array. (Inherited from HashAlgorithm) |
TryHashFinal(Span<Byte>, Int32) |
Attempts to finalize the hash computation after the last data is processed by the hash algorithm. (Inherited from HashAlgorithm) |
Explicit Interface Implementations
IDisposable.Dispose() |
Releases the unmanaged resources used by the HashAlgorithm and optionally releases the managed resources. (Inherited from HashAlgorithm) |