SHA1Managed SHA1Managed SHA1Managed SHA1Managed Class

定义

使用托管库计算输入数据的 SHA1 哈希值。Computes the SHA1 hash for the input data using the managed library.

public ref class SHA1Managed : System::Security::Cryptography::SHA1
[System.Runtime.InteropServices.ComVisible(true)]
public class SHA1Managed : System.Security.Cryptography.SHA1
type SHA1Managed = class
    inherit SHA1
Public Class SHA1Managed
Inherits SHA1
继承
属性

示例

下面的示例计算的SHA1Managed data哈希值,并将result其存储在中。The following example computes the SHA1Managed hash for data and stores it in result. 此示例假设有一个预定义的常量DATA_SIZEThis example assumes that there is a predefined constant DATA_SIZE.

array<Byte>^ data = gcnew array<Byte>( DATA_SIZE );
array<Byte>^ result;
SHA1^ shaM = gcnew SHA1Managed;
result = shaM->ComputeHash( data );
byte[] data = new byte[DATA_SIZE];
byte[] result;
SHA1 shaM = new SHA1Managed();
result = shaM.ComputeHash(data);
Dim data(DATA_SIZE) As Byte
Dim result() As Byte
Dim shaM As New SHA1Managed()
result = shaM.ComputeHash(data)

注解

哈希值用作表示大量数据的固定大小的唯一值。The hash is used as a unique value of fixed size representing a large amount of data. 当且仅当相应的数据也匹配时,两组数据的哈希才会匹配。Hashes of two sets of data should match if and only if the corresponding data also matches. 对数据的小更改会导致哈希中的大量无法预测的更改。Small changes to the data result in large unpredictable changes in the hash.

这是不包装 CAPI 的纯粹SHA1托管实现。This is a purely managed implementation of SHA1 that does not wrap CAPI.

SHA1Managed算法的哈希大小为160位。The hash size for the SHA1Managed algorithm is 160 bits.

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。Due to collision problems with SHA1, Microsoft recommends a security model based on SHA256 or better.

构造函数

SHA1Managed() SHA1Managed() SHA1Managed() SHA1Managed()

初始化 SHA1Managed 类的新实例。Initializes a new instance of the SHA1Managed class.

方法

Clear() Clear() Clear() Clear()

释放 HashAlgorithm 类使用的所有资源。Releases all resources used by the HashAlgorithm class.

(Inherited from HashAlgorithm)
ComputeHash(Byte[]) ComputeHash(Byte[]) ComputeHash(Byte[]) ComputeHash(Byte[])

计算指定字节数组的哈希值。Computes the hash value for the specified byte array.

(Inherited from HashAlgorithm)
ComputeHash(Byte[], Int32, Int32) ComputeHash(Byte[], Int32, Int32) ComputeHash(Byte[], Int32, Int32) ComputeHash(Byte[], Int32, Int32)

计算指定字节数组的指定区域的哈希值。Computes the hash value for the specified region of the specified byte array.

(Inherited from HashAlgorithm)
ComputeHash(Stream) ComputeHash(Stream) ComputeHash(Stream) ComputeHash(Stream)

计算指定 Stream 对象的哈希值。Computes the hash value for the specified Stream object.

(Inherited from HashAlgorithm)
Dispose() Dispose() Dispose() Dispose()

释放 HashAlgorithm 类的当前实例所使用的所有资源。Releases all resources used by the current instance of the HashAlgorithm class.

(Inherited from HashAlgorithm)
Dispose(Boolean) Dispose(Boolean) Dispose(Boolean) Dispose(Boolean)

释放由 SHA1Managed 对象使用的非托管资源并(可选)释放托管资源。Releases unmanaged resources used by the SHA1Managed object and optionally releases the managed resources.

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

确定指定的对象是否等于当前对象。Determines whether the specified object is equal to the current object.

(Inherited from Object)
Finalize() Finalize() Finalize() Finalize()
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

作为默认哈希函数。Serves as the default hash function.

(Inherited from Object)
GetType() GetType() GetType() GetType()

获取当前实例的 TypeGets the Type of the current instance.

(Inherited from Object)
HashCore(Byte[], Int32, Int32) HashCore(Byte[], Int32, Int32) HashCore(Byte[], Int32, Int32) HashCore(Byte[], Int32, Int32)

将写入对象的数据路由到 SHA1Managed 哈希算法以计算哈希值。Routes data written to the object into the SHA1Managed hash algorithm for computing the hash.

HashCore(ReadOnlySpan<Byte>) HashCore(ReadOnlySpan<Byte>) HashCore(ReadOnlySpan<Byte>) HashCore(ReadOnlySpan<Byte>)
HashFinal() HashFinal() HashFinal() HashFinal()

将所有数据都写入对象后,返回计算所得的 SHA1 哈希值。Returns the computed SHA1 hash value after all data has been written to the object.

Initialize() Initialize() Initialize() Initialize()

初始化 SHA1Managed 的实例。Initializes an instance of SHA1Managed.

MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(Inherited from Object)
ToString() ToString() ToString() ToString()

返回表示当前对象的字符串。Returns a string that represents the current object.

(Inherited from Object)
TransformBlock(Byte[], Int32, Int32, Byte[], Int32) TransformBlock(Byte[], Int32, Int32, Byte[], Int32) TransformBlock(Byte[], Int32, Int32, Byte[], Int32) TransformBlock(Byte[], Int32, Int32, Byte[], Int32)

计算输入字节数组指定区域的哈希值,并将输入字节数组指定区域复制到输出字节数组的指定区域。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) TransformFinalBlock(Byte[], Int32, Int32) TransformFinalBlock(Byte[], Int32, Int32) TransformFinalBlock(Byte[], Int32, Int32)

计算指定字节数组的指定区域的哈希值。Computes the hash value for the specified region of the specified byte array.

(Inherited from HashAlgorithm)
TryComputeHash(ReadOnlySpan<Byte>, Span<Byte>, Int32) TryComputeHash(ReadOnlySpan<Byte>, Span<Byte>, Int32) TryComputeHash(ReadOnlySpan<Byte>, Span<Byte>, Int32) TryComputeHash(ReadOnlySpan<Byte>, Span<Byte>, Int32) Inherited from HashAlgorithm
TryHashFinal(Span<Byte>, Int32) TryHashFinal(Span<Byte>, Int32) TryHashFinal(Span<Byte>, Int32) TryHashFinal(Span<Byte>, Int32)

属性

CanReuseTransform CanReuseTransform CanReuseTransform CanReuseTransform

获取一个值,该值指示是否可重复使用当前转换。Gets a value indicating whether the current transform can be reused.

(Inherited from HashAlgorithm)
CanTransformMultipleBlocks CanTransformMultipleBlocks CanTransformMultipleBlocks CanTransformMultipleBlocks

当在派生类中重写时,获取一个值,该值指示是否可以转换多个块。When overridden in a derived class, gets a value indicating whether multiple blocks can be transformed.

(Inherited from HashAlgorithm)
Hash Hash Hash Hash

获取计算所得的哈希代码的值。Gets the value of the computed hash code.

(Inherited from HashAlgorithm)
HashSize HashSize HashSize HashSize

获取计算所得的哈希代码的大小(以位为单位)。Gets the size, in bits, of the computed hash code.

(Inherited from HashAlgorithm)
InputBlockSize InputBlockSize InputBlockSize InputBlockSize

当在派生类中重写时,获取输入块的大小。When overridden in a derived class, gets the input block size.

(Inherited from HashAlgorithm)
OutputBlockSize OutputBlockSize OutputBlockSize OutputBlockSize

当在派生类中重写时,获取输出块的大小。When overridden in a derived class, gets the output block size.

(Inherited from HashAlgorithm)

字段

HashSizeValue HashSizeValue HashSizeValue HashSizeValue

表示计算所得的哈希代码的大小(以位为单位)。Represents the size, in bits, of the computed hash code.

(Inherited from HashAlgorithm)
HashValue HashValue HashValue HashValue

表示计算所得的哈希代码的值。Represents the value of the computed hash code.

(Inherited from HashAlgorithm)
State State State State

表示哈希计算的状态。Represents the state of the hash computation.

(Inherited from HashAlgorithm)

显式界面实现

IDisposable.Dispose() IDisposable.Dispose() IDisposable.Dispose() IDisposable.Dispose()

释放由 HashAlgorithm 占用的非托管资源,还可以另外再释放托管资源。Releases the unmanaged resources used by the HashAlgorithm and optionally releases the managed resources.

(Inherited from HashAlgorithm)

适用于

另请参阅