Encryption program(s) from Carsten Flensburg

[jamief]

All source and programs@ version V5R3 saved library called encrypt to savf.

**    Qc3DecryptData  Decrypt data        Restores encrypted data to a      
**                                        clear (intelligible) form.        
**                                                                          
**    Qc3EncryptData  Encrypt data        Scrambles clear data into an      
**                                        unintelligible form.              
**                                                                          
**    Qc3GenPRNs      Generate            Generates a pseudorandom binary   
**                    pseudorandom        stream.  The pseudorandom number  
**                    numbers             generation is performed using the 
**                                        FIPS 186-1 algorithm.             
**                                                                           
**  C library function:                                                      
**    cvthc         Convert hex to        Converts a character string to     
**                  character             its hexadecimal representation     
**                                        in the form of 4-bit sequences     
**                                        also known as nibbles.             
**                                                                           
**    cvtch         Convert character     Converts a string of nibbles to    
**                  to hex                its character representation.      
**                                        Nibbles are specified by digits    
**                                        0 to 9 and letters A to F.         
**