A group of 32 bits that is treated either as a single entity or as an array of 4 bytes.
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                                                                    FIPS 197
                                                                
                                                                                                                                                                                                
									                            
						                            
						                            
						                        
					                            
						                              A predefined substring consisting of a fixed pattern/template (e.g., 010,  0110).
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                                                                    NIST SP 800-22 Rev. 1a