iPhone, Android class for encrypt and decrypt DUKPT

We need a class for encryption/decryption dukpt (Derived unique key per transaction) in iPhone, Android and C#

1- iPhone Class for encryption/decryption dukpt

2- Android Class for encryption/decryption dukpt

3- C# Class for encryption/decryption dukpt

iPhone Class example;

#define dukptKEY @"ENGINHOSGOR"

#define dukptCahr @"?"

#import "dukptData.h"

@implementation dukptData

- (NSString *)encrypt:(NSString *)strDukpt:(NSString *)strKey{

//encryptData with KEY dukptKEY and dukptCahr

return sampleDukptData;


- (NSDictionary *)decrypt:(NSString *)strDukpt:(NSString *)strKey{

NSMutableDictionary *retDic = [[NSMutableDictionary alloc] init];

//decryptData with KEY dukptKEY and dukptCahr

[retDic setObject:@"" forKey:@"email"];

[retDic setObject:@"123" forKey:@"password"];

[retDic setObject:@"9001" forKey:@"id"];

return retDic;


- (NSString *)encryptData:(NSDictionary *)datDic{

NSString *strEmail = [datDic objectForKey:@"email"];

NSString *strPassword = [datDic objectForKey:@"password"];

NSString *strID = [datDic objectForKey:@"id"];

//encryptData with KEY dukptKEY and dukptCahr

NSString *strData = [NSString stringWithFormat:@"%@%@%@%@%@",strEmail,dukptCahr,strPassword,dukptCahr,strID];

NSString *strRet = [self encrypt:strData :dukptKEY];

return strRet;


- (NSDictionary *)decryptData:(NSString *)strData{

NSDictionary *retDic = [self decrypt:strData :dukptKEY];

return retDic;



iPhone and Android;

In our application, we send a string, which separated with special character to this class, than we get, encrypted a string.

And also we send an encrypted string to this class we get a string which separated a special character.

Web Services;

We need class for encryption/decryption services which is coded by c#.

In our application, we post an encrypted a string to this web services.

And also this web services return an encrypted a string.

Skills: Android, C Programming, iPhone, Mobile App Development, Objective C

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