Early Preview
This is currently very much a preview. Please feel free to try things out,
but don't be upset if anything is not yet working. Feedback is welcome over on our
GitHub Dicussions page.
class System.Security.Cryptography.SHA256
Assembly: System.Security.Cryptography
Inheritance: object → HashAlgorithm → SHA256
Computes the <see cref="T:System.Security.Cryptography.SHA256" /> hash for the input data.
Fields and Constants
public const
int
HashSizeInBits
The hash size produced by the SHA-256 algorithm, in bits.
public const
int
HashSizeInBytes
The hash size produced by the SHA-256 algorithm, in bytes.
protected
int
HashSizeValue
Represents the size, in bits, of the computed hash code.
protected
int
State
Represents the state of the hash computation.
Properties
public
bool
CanReuseTransform
Gets a value indicating whether the current transform can be reused.
public
bool
CanTransformMultipleBlocks
When overridden in a derived class, gets a value indicating whether multiple blocks can be transformed.
public
byte[]
Hash
Gets the value of the computed hash code.
public
int
HashSize
Gets the size, in bits, of the computed hash code.
public
int
InputBlockSize
When overridden in a derived class, gets the input block size.
public
int
OutputBlockSize
When overridden in a derived class, gets the output block size.
Methods
Releases all resources used by the <see cref="T:System.Security.Cryptography.HashAlgorithm" /> class.
public
byte[]
ComputeHash(byte[] buffer)
Inherited from HashAlgorithm
buffer
The input to compute the hash code for.
Returns The computed hash code.
Computes the hash value for the specified byte array.
public
byte[]
ComputeHash(byte[] buffer,
int offset,
int count)
Inherited from HashAlgorithm
buffer
The input to compute the hash code for.
offset
The offset into the byte array from which to begin using data.
count
The number of bytes in the array to use as data.
Returns The computed hash code.
Computes the hash value for the specified region of the specified byte array.
public
byte[]
ComputeHash(IO.Stream inputStream)
Inherited from HashAlgorithm
inputStream
The input to compute the hash code for.
Returns The computed hash code.
Computes the hash value for the specified <see cref="T:System.IO.Stream" /> object.
public
Threading.Tasks.Task`1
ComputeHashAsync(IO.Stream inputStream,
Threading.CancellationToken cancellationToken = null)
Inherited from HashAlgorithm
inputStream
The input to compute the hash code for.
cancellationToken
The token to monitor for cancellation requests.
Returns A task that represents the asynchronous compute hash operation and wraps the computed hash code.
Asynchronously computes the hash value for the specified <see cref="T:System.IO.Stream" /> object.
Releases all resources used by the current instance of the <see cref="T:System.Security.Cryptography.HashAlgorithm" /> class.
protected
void
Dispose(bool disposing)
Inherited from HashAlgorithm
disposing
<see langword="true" /> to release both managed and unmanaged resources; <see langword="false" /> to release only unmanaged resources.
Releases the unmanaged resources used by the <see cref="T:System.Security.Cryptography.HashAlgorithm" /> and optionally releases the managed resources.
protected
void
HashCore(byte[] array,
int ibStart,
int cbSize)
Inherited from HashAlgorithm
array
The input to compute the hash code for.
ibStart
The offset into the byte array from which to begin using data.
cbSize
The number of bytes in the byte array to use as data.
When overridden in a derived class, routes data written to the object into the hash algorithm for computing the hash.
When overridden in a derived class, finalizes the hash computation after the last data is processed by the cryptographic hash algorithm.
Resets the hash algorithm to its initial state.
public
int
TransformBlock(byte[] inputBuffer,
int inputOffset,
int inputCount,
byte[] outputBuffer,
int outputOffset)
Inherited from HashAlgorithm
inputBuffer
The input to compute the hash code for.
inputOffset
The offset into the input byte array from which to begin using data.
inputCount
The number of bytes in the input byte array to use as data.
outputBuffer
A copy of the part of the input array used to compute the hash code.
outputOffset
The offset into the output byte array from which to begin writing data.
Returns The number of bytes written.
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.
public
byte[]
TransformFinalBlock(byte[] inputBuffer,
int inputOffset,
int inputCount)
Inherited from HashAlgorithm
inputBuffer
The input to compute the hash code for.
inputOffset
The offset into the byte array from which to begin using data.
inputCount
The number of bytes in the byte array to use as data.
Returns An array that is a copy of the part of the input that is hashed.
Computes the hash value for the specified region of the specified byte array.
public
bool
TryComputeHash(ReadOnlySpan`1 source,
Span`1 destination,
Int32& bytesWritten)
Inherited from HashAlgorithm
public
bool
Equals(object obj)
Inherited from object
protected
void
Finalize()
Inherited from object
public
int
GetHashCode()
Inherited from object
protected
object
MemberwiseClone()
Inherited from object
public
string
ToString()
Inherited from object