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How to encrypt lib or schematic in LTspice


		

			

									
						Sunil_Kumar
					
							

			
				
									
											
							 		
		        	            							
			
			    	
			                    
                
				                on Sep 23, 2021 
				
			
			
		


				
		

			
Requirement is to forward the schematic to vendor for this purpose looking a way to encrypt the Spice Netlist and forward to them for further validation.


Tried LTSpicehelp section 'Encrypted Libraries' but it did not help. I am not sure where the mistake is. I observed below error


'XVIIx64.exe' is not recognized as an internal or external command, operable program or batch file.




I do not have basic knowledge related to command prompt, Can I get detailed steps  or a video link for encryption

										


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[edited by: Sunil_Kumar at 6:56 AM (GMT -4) on 24 Sep 2021]
				

					


				
				
		

			
						
									
									
						
						
			
			
			
			
		


					

			





	

		






		
			

			
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                        					 Analog Employees 
                        					
                        				
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                                                	 Sep 28, 2021 
						
										
						
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    Hi Sunil_Kumar,

    

    SPICE model encryption is performed with the LTspice command using the Windows command prompt.
    

    Start the command prompt from “Windows System Tools” of the start menu.
    

    Change…
    
				
			
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                                 Analog Employees 
                                
                            
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                on Sep 28, 2021 9:17 AM
            
            
					
    
	
    

		
		
    
					
    Hi Sunil_Kumar,

    

    SPICE model encryption is performed with the LTspice command using the Windows command prompt.
    

    Start the command prompt from “Windows System Tools” of the start menu.
    

    Change to the directory where LTspice XVII is installed at the command prompt.
    

    Type
    

    cd C:\Program Files\LTC\LTspiceXVII
    

     
    

    Because it is used for the command which encrypts the SPICE model, copy the path of the file of the SPICE model that you want to encrypt.
    

    Execute the command “XVIIx64.exe -encrypt file path” to encrypt the SPICE model.
    

    Type
    

    XVIIx64.exe -encrypt "file path"
    

    Example:
     XVIIx64.exe -encrypt "C:\Users\USER\Documents\LTspiceXVII\lib\sub\Analog_Devices\ad8610.cir"

     

     

    The above screen appears, and encryption starts. Depending on the size of the SPICE model and the environment of the PC used, the encryption time will take about 2 to 5 minutes.

     

    

    When encryption is completed, the above screen appears. Click “OK” to complete all the work.
    

    When you open the encrypted SPICE model file, you can see that it has been changed to a hexadecimal list.

    I hope these steps will help you.

    




    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
						
						
				
				
		
		
    
			
		
    
	
    

    

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													+2
							
			
				
									
							        
            
                                                                                    
      
                            
    • 
                                 Analog Employees 
                                
                            
      • 
                        
     
                                                            			
			                            
                        
                on Sep 28, 2021 9:17 AM
            
            
					
    
	
    

		
		
    
					
    Hi Sunil_Kumar,

    

    SPICE model encryption is performed with the LTspice command using the Windows command prompt.
    

    Start the command prompt from “Windows System Tools” of the start menu.
    

    Change to the directory where LTspice XVII is installed at the command prompt.
    

    Type
    

    cd C:\Program Files\LTC\LTspiceXVII
    

     
    

    Because it is used for the command which encrypts the SPICE model, copy the path of the file of the SPICE model that you want to encrypt.
    

    Execute the command “XVIIx64.exe -encrypt file path” to encrypt the SPICE model.
    

    Type
    

    XVIIx64.exe -encrypt "file path"
    

    Example:
     XVIIx64.exe -encrypt "C:\Users\USER\Documents\LTspiceXVII\lib\sub\Analog_Devices\ad8610.cir"

     

     

    The above screen appears, and encryption starts. Depending on the size of the SPICE model and the environment of the PC used, the encryption time will take about 2 to 5 minutes.

     

    

    When encryption is completed, the above screen appears. Click “OK” to complete all the work.
    

    When you open the encrypted SPICE model file, you can see that it has been changed to a hexadecimal list.

    I hope these steps will help you.

    




    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
						
						
				
				
		
		
    
			
		
    
	
    

    

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