AAL2MXGenerateChallenge

Function prototype

aat_int32 AAL2MXGenerateChallenge (
                                   TDigipassBlob*     MXCardBlob,
                                   TKernelParms*      CallParms,
                                   aat_int32          MXCardSequenceNumber,
                                   aat_int32          NumberRows,
                                   aat_int32          NumberColumns,
                                   aat_int32          SecurityLevel,
                                   aat_ascii*         Challenge);

Description

This function is used to generate a challenge for a matrix card. A challenge consists in the concatenation of matrix card cell row ID and column ID:

• One digit for the row ID: from 1 to 9
• One digit for the column ID: from A to Z

This function randomly chooses a row index between 0 and NumberRows-1, and a column ID between 0 and NumberColumns-1. Then, the indexes are concatenated with the result of a two-digit index couple (row digit, column digit). The security level determines the number of couples in the challenge.

Parameters

Return codes