SecurityExtensionsSecureEquals(Byte, Byte) Method

Compares two byte arrays securely, preventing timing attacks.

Definition

Namespace: SnapDB.Security
Assembly: SnapDB (in SnapDB.dll) Version: 1.0.102.0 -- Release Build+29075351d0e5aa4dea46a5c520805222f672dc2e

C#View Source Request Example

public static bool SecureEquals(
	this byte[] a,
	byte[] b
)

VBView Source Request Example

<ExtensionAttribute>
Public Shared Function SecureEquals ( 
	a As Byte(),
	b As Byte()
) As Boolean

C++View Source Request Example

public:
[ExtensionAttribute]
static bool SecureEquals(
	array<unsigned char>^ a, 
	array<unsigned char>^ b
)

JavaScriptView Source Request Example

SnapDB.Security.SecurityExtensions.SecureEquals = function(a, b);

Parameters

a Byte: The first byte array to compare.
b Byte: The second byte array to compare.

Return Value

Boolean
true if both arrays are equal; otherwise, false.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type Byte. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Remarks

If a or b is null, function returns immediately with a false. Certain cryptographic attacks can occur by comparing the amount of time it takes to do certain operations. Comparing two byte arrays is one example. Therefore this method should take constant time to do a comparison of two arrays.