valid_license

public boolean valid_license(char* filename,

char* master_key_str,

int* days_left,

int* feature,

  const char* company_name,
  const char * appname)

Parameters:

filename - The name of the file that stores your cutomers license key.

master_key_str - a 136 character key that represents your product.

days_left - The number of days left before the license expires. If the license is permanent this is set to -1.

feature - This number is stored in the customer license keys that you create. It has no meaning to RepublicanDRM but can be used by your software.

company_name – Your company name, used to create unique obfuscated registry keys.

appname – Your application name, used to create unique obfuscated registry keys.

Returns:

1 if the key is valid and 0 otherwise.

getmacaddress

unsigned char* getmacaddress();

This function extracts the host id (MAC address) of the host on which the software is running.

If there is no valid license for the host then you should get the host id and display it on the screen, so that the end user knows what their host id is, for when they purchase a license. You must free the memory returned by this function using free() when you have finished with it.

Returns:

A binary (i.e. nonprintable) sequence representing the MAC address.

print_MACaddress

char* print_MACaddress(unsigned char *CryptData);

This function converts the byte string from getmacaddress() and puts it into a form that is human readable (i.e. ASCII string).

You must free the memory returned by this function using free() when you have finished with it.

Parameters:

CryptData - A binary (i.e. nonprintable) sequence representing a MAC address..

Returns:

An ASCII (i.e.printable) sequence representing the MAC address..

save_license_key_if_valid

int save_license_key_if_valid(char* key,char* filename,char* master_key_str,int* days_left, int* feature,const char* company_name,const char * appname);

This function first checks that the license keys is valid. If the key is valid it stores it into the location given.

Parameters:

key – the ASCII license key entered by your customer.

filename - The name of the file that stores your cutomers license key.

master_key_str - a 136 character key that represents your product.

days_left - The number of days left before the license expires. If the license is permanent this is set to -1.

feature - This number is stored in the customer license keys that you create. It has no meaning to RepublicanDRM but can be used by your software.

company_name – Your company name, used to create unique obfuscated registry keys.

appname – Your application name, used to create unique obfuscated registry keys.

Returns:

1 if the key is valid and 0 otherwise.

c_to_java_valid_license

int c_to_java_valid_license(char* filename,char* master_key_str, const char* company_name,const char * appname, char * challenge_str);

This function is used within the license_mgr.exe executable that implements anti-clock-tampering. You need to compile your own version of license_mgr.exe compiling in your own master key. The functionality of this function is the same as valid_license, but the function includes an additional parameter, which is random number to be encrypted.

Parameters:

filename - The name of the file that stores your cutomers license key.

master_key_str - a 136 character key that represents your product.

company_name – Your company name, used to create unique obfuscated registry keys.

appname – Your application name, used to create unique obfuscated registry keys.

challenge_str – a hexadecimal string to be encrypted and printed to stdout.

Returns:

1 if the key is valid and 0 otherwise.