DeterministicEncryption..::..TryDecrypt Method (Span<(Of <(<'Byte>)>)>, array<Byte>[]()[][]%, array<Nullable<(Of <(<'Byte>)>)>>[]()[][]%)

Tries to decrypt the specified cipher bytes if the provided hash matches.

Namespace: Walter.Cypher
Assembly: Walter.Cypher (in Walter.Cypher.dll)

Syntax

public bool TryDecrypt(
	Span<byte> cypherBytes,
	ref byte[] hash,
	out Nullable<byte>[] clearBytes
)

Parameters

cypherBytes: Type: Span<(Of <(<'Byte>)>)>
The cipher bytes to decrypt.

hash: Type: array<Byte>[]()[][]%
The hash to validate against the cipher bytes.

clearBytes: Type: array<Nullable<(Of <(<'Byte>)>)>>[]()[][]%
The decrypted data, if decryption is successful.

Return Value

true if decryption is successful and the hash matches; otherwise, false.

Exceptions

Exception	Condition
ArgumentNullException	Thrown when either cypherBytes or hash is null.

Remarks

This method first validates that the provided hash matches the hash of the cipher bytes. If the hashes match, it proceeds with decryption. If not, it logs a critical error and returns false.