/n software 3-D Secure V2 C++ Edition

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AuthenticationCAVVAlgorithm Property

Indicates the algorithm used to generate the AuthenticationCAVV value.


char* GetAuthenticationCAVVAlgorithm();
LPWSTR GetAuthenticationCAVVAlgorithm();
@property (nonatomic,readonly,assign,getter=authenticationCAVVAlgorithm) NSString* authenticationCAVVAlgorithm;
- (NSString*)authenticationCAVVAlgorithm;
public var authenticationCAVVAlgorithm: String {
  get {...}

Default Value



This property is determined by the Access Control Server (ACS), and is filled after receiving a response to a Payer Authentication Request (PAReq). This property contains the one digit value which indicates the algorithm used by the ACS to generate the Cardholder Authentication Verification Value (CAVV), stored in the AuthenticationCAVV property. Valid algorithms include:

0HMAC (as per SET TranStain)
2CVV with ATN
3MasterCard SPA algorithm

The data contained within this property is only valid if the AuthenticationStatus is "Y" or "A". Additional values may be defined at any time. All user implementations must accept any value for this field.

This property is read-only and not available at design time.

Data Type


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/n software 3-D Secure V2 C++ Edition - Version 2.0 [Build 7722]