Method for providing a cryptographically signed command

Abstract

The invention provides a method for providing a cryptographically signed command, the command comprising a command name and at least one command argument with generating a cryptographic signature of the command name and composing the cryptographically signed command using the command name, the signature and the at least one command argument.

1 . A method for providing a cryptographically signed command, the command comprising a command name and at least one command argument, the method comprising: 
 generating a cryptographic signature of the command name; and    composing the cryptographically signed command using the command name, the signature and the at least one command argument.    
     
     
         2 . The method according to  claim 1 , comprising concatenating the command name, the cryptographic signature of the command name and the at least one command argument for composing the cryptographically signed command.  
     
     
         3 . The method according to  claim 1 , comprising generating the cryptographic signature of the command name upon a basis of an asymmetric cryptographic algorithm, in particular the RSA algorithm, or upon a basis of a digital signature algorithm.  
     
     
         4 . The method according to  claim 1 , the command name indicating determining a navigation route to a destination determined by the at least one command argument or providing a navigation map determined by address data indicated by the at least one command argument or executing a computer program with the at least one command argument.  
     
     
         5 . A method for providing a cryptographically verified command upon a basis of a cryptographically signed command, the cryptographically signed command comprising a command name, a cryptographic signature of the command name and at least one command argument, the method comprising: 
 decrypting the cryptographic signature to obtain a first cryptographic value;    processing the command name to obtain a second cryptographic value;    comparing the first and the second cryptographic value to obtain a comparison result; and    providing or executing the command name and the at least one command argument as the cryptographically verified command in dependence of the comparison result.    
     
     
         6 . The method according to  claim 5 , the first cryptographic value comprising a hash value of the cryptographic signature, the second cryptographic value comprising a hash value of the command name.  
     
     
         7 . The method according to  claim 5 , comprising providing or executing the cryptographically verified command if the first and the second cryptographic value are equal.  
     
     
         8 . A device for providing a cryptographically signed command, the command comprising a command name and at least one command argument, the device comprising: 
 a generator for generating a cryptographic signature of the command name; and    a composer for composing the cryptographically signed command using the command name, the signature and the at least one command argument.    
     
     
         9 . A device for providing a cryptographically verified command upon a basis of a cryptographically signed command, the cryptographically signed command comprising a command name, a cryptographic signature of the command name and at least one command argument, the device comprising: 
 a decryptor for decrypting the cryptographic signature to obtain a first cryptographic value;    a processor for processing the command name to obtain a second cryptographic value;    a comparator for comparing the first and the second cryptographic value to obtain a comparison result; and    a provider for providing or executing the command name and the at least one command argument as the cryptographically verified command in dependence of the comparison result.    
     
     
         10 . A programmably arranged device being configured to perform the method according to  claim 1 .  
     
     
         11 . A computer program for performing the method according to  claim 1  when the computer program runs on a computer.