CryptographicOperations.FixedTimeEquals Method
Definition
Important
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Determines the equality of two byte sequences in an amount of time that depends on the length of the sequences, but not their values.
public:
static bool FixedTimeEquals(ReadOnlySpan<System::Byte> left, ReadOnlySpan<System::Byte> right);
public static bool FixedTimeEquals (ReadOnlySpan<byte> left, ReadOnlySpan<byte> right);
static member FixedTimeEquals : ReadOnlySpan<byte> * ReadOnlySpan<byte> -> bool
Public Shared Function FixedTimeEquals (left As ReadOnlySpan(Of Byte), right As ReadOnlySpan(Of Byte)) As Boolean
Parameters
- left
- ReadOnlySpan<Byte>
The first buffer to compare.
- right
- ReadOnlySpan<Byte>
The second buffer to compare.
Returns
true
if left
and right
have the same values for Length and the same contents; otherwise, false
.
Remarks
This method compares the contents from two buffers for equality in a way that doesn't leak timing information, making it ideal for use within cryptographic routines.
This method will short-circuit and return false
only if left
and right
have different lengths.
Fixed-time behavior is guaranteed in all other cases, including when left
and right
reference the same address.
Applies to
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