SHA512 类
定义
public ref class SHA512 abstract : System::Security::Cryptography::HashAlgorithm
public abstract class SHA512 : System.Security.Cryptography.HashAlgorithm
[System.Runtime.InteropServices.ComVisible(true)]
public abstract class SHA512 : System.Security.Cryptography.HashAlgorithm
type SHA512 = class
inherit HashAlgorithm
[<System.Runtime.InteropServices.ComVisible(true)>]
type SHA512 = class
inherit HashAlgorithm
Public MustInherit Class SHA512
Inherits HashAlgorithm
- 继承
- 派生
- 属性
示例
下面的示例计算的 SHA512 哈希值 data ,并将其存储在中 result 。The following example computes the SHA512 hash for data and stores it in result. 此示例假设有一个预定义的常量 DATA_SIZE 。This example assumes that there is a predefined constant DATA_SIZE.
array<Byte>^ data = gcnew array<Byte>( DATA_SIZE );
array<Byte>^ result;
SHA512^ shaM = gcnew SHA512Managed;
result = shaM->ComputeHash( data );
byte[] data = new byte[DATA_SIZE];
byte[] result;
SHA512 shaM = new SHA512Managed();
result = shaM.ComputeHash(data);
Dim data(DATA_SIZE) As Byte
Dim result() As Byte
Dim shaM As New SHA512Managed()
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.
算法的哈希大小 SHA512 为512位。The hash size for the SHA512 algorithm is 512 bits.
这是一个抽象类。This is an abstract class. 此类的唯一实现是 SHA512Managed 。The only implementation of this class is SHA512Managed.
构造函数
| SHA512() |
字段
| 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. (继承自 HashAlgorithm) |
| HashValue |
表示计算所得的哈希代码的值。Represents the value of the computed hash code. (继承自 HashAlgorithm) |
| State |
表示哈希计算的状态。Represents the state of the hash computation. (继承自 HashAlgorithm) |
属性
| 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. (继承自 HashAlgorithm) |
| 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. (继承自 HashAlgorithm) |
| Hash |
获取计算所得的哈希代码的值。Gets the value of the computed hash code. (继承自 HashAlgorithm) |
| 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. (继承自 HashAlgorithm) |
| 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. (继承自 HashAlgorithm) |
| 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. (继承自 HashAlgorithm) |
方法
| Clear() |
释放 HashAlgorithm 类使用的所有资源。Releases all resources used by the HashAlgorithm class. (继承自 HashAlgorithm) |
| ComputeHash(Byte[]) |
计算指定字节数组的哈希值。Computes the hash value for the specified byte array. (继承自 HashAlgorithm) |
| 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. (继承自 HashAlgorithm) |
| ComputeHash(Stream) |
计算指定 Stream 对象的哈希值。Computes the hash value for the specified Stream object. (继承自 HashAlgorithm) |
| ComputeHashAsync(Stream, CancellationToken) |
异步计算指定 Stream 对象的哈希值。Asynchronously computes the hash value for the specified Stream object. (继承自 HashAlgorithm) |
| Create() |
创建 SHA512 的默认实现的实例。Creates an instance of the default implementation of SHA512. |
| Create(String) |
创建 SHA512 的指定实现的实例。Creates an instance of a specified implementation of SHA512. |
| 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. (继承自 HashAlgorithm) |
| Dispose(Boolean) |
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. (继承自 HashAlgorithm) |
| Equals(Object) |
确定指定对象是否等于当前对象。Determines whether the specified object is equal to the current object. (继承自 Object) |
| GetHashCode() |
作为默认哈希函数。Serves as the default hash function. (继承自 Object) |
| GetType() |
获取当前实例的 Type。Gets the Type of the current instance. (继承自 Object) |
| HashCore(Byte[], Int32, Int32) |
当在派生类中重写时,将写入对象的数据路由到哈希算法以计算哈希值。When overridden in a derived class, routes data written to the object into the hash algorithm for computing the hash. (继承自 HashAlgorithm) |
| HashCore(ReadOnlySpan<Byte>) |
将写入对象的数据路由到哈希算法以计算哈希值。Routes data written to the object into the hash algorithm for computing the hash. (继承自 HashAlgorithm) |
| HashData(Byte[]) |
使用 SHA512 算法计算数据的哈希值。Computes the hash of data using the SHA512 algorithm. |
| HashData(ReadOnlySpan<Byte>) |
使用 SHA512 算法计算数据的哈希值。Computes the hash of data using the SHA512 algorithm. |
| HashData(ReadOnlySpan<Byte>, Span<Byte>) |
使用 SHA512 算法计算数据的哈希值。Computes the hash of data using the SHA512 algorithm. |
| HashFinal() |
在派生类中重写时,在加密哈希算法处理最后一个数据后结束哈希计算。When overridden in a derived class, finalizes the hash computation after the last data is processed by the cryptographic hash algorithm. (继承自 HashAlgorithm) |
| Initialize() |
将哈希算法重置为其初始状态。Resets the hash algorithm to its initial state. (继承自 HashAlgorithm) |
| MemberwiseClone() |
创建当前 Object 的浅表副本。Creates a shallow copy of the current Object. (继承自 Object) |
| ToString() |
返回表示当前对象的字符串。Returns a string that represents the current object. (继承自 Object) |
| 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. (继承自 HashAlgorithm) |
| 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. (继承自 HashAlgorithm) |
| TryComputeHash(ReadOnlySpan<Byte>, Span<Byte>, Int32) |
尝试计算指定字节数组的哈希值。Attempts to compute the hash value for the specified byte array. (继承自 HashAlgorithm) |
| TryHashData(ReadOnlySpan<Byte>, Span<Byte>, Int32) |
尝试使用 SHA512 算法计算数据的哈希值。Attempts to compute the hash of data using the SHA512 algorithm. |
| TryHashFinal(Span<Byte>, Int32) |
在哈希算法处理最后一个数据后,尝试结束哈希计算。Attempts to finalize the hash computation after the last data is processed by the hash algorithm. (继承自 HashAlgorithm) |
显式接口实现
| 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. (继承自 HashAlgorithm) |