About: Polymorphic code

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In computing, polymorphic code is code that uses a polymorphic engine to mutate while keeping the original algorithm intact - that is, the code changes itself every time it runs, but the function of the code (its semantics) will not change at all. For example, the simple math equations 3+1 and 6-2 both achieve the same result, yet run with different machine code in a CPU. This technique is sometimes used by computer viruses, shellcodes and computer worms to hide their presence.

Attributes	Values
rdf:type	Thing movie
rdfs:label	Polymorphic code (en)
rdfs:comment	In computing, polymorphic code is code that uses a polymorphic engine to mutate while keeping the original algorithm intact - that is, the code changes itself every time it runs, but the function of the code (its semantics) will not change at all. For example, the simple math equations 3+1 and 6-2 both achieve the same result, yet run with different machine code in a CPU. This technique is sometimes used by computer viruses, shellcodes and computer worms to hide their presence. (en)
differentFrom	Polymorphism (computer science)
sameAs	Polymorphic code Polymorphic code
dbp:wikiPageUsesTemplate	dbt:Cite_journal dbt:Distinguish dbt:Refbegin dbt:Refend dbt:Refimprove
Subject	Types of malware
gold:hypernym	Code
prov:wasDerivedFrom	http://en.wikipedia.org/wiki/Polymorphic_code?oldid=1057010347&ns=0
Wikipage page ID	218447 (xsd:integer)
page length (characters) of wiki page	7806 (xsd:nonNegativeInteger)
Wikipage revision ID	1057010347 (xsd:integer)
has abstract	In computing, polymorphic code is code that uses a polymorphic engine to mutate while keeping the original algorithm intact - that is, the code changes itself every time it runs, but the function of the code (its semantics) will not change at all. For example, the simple math equations 3+1 and 6-2 both achieve the same result, yet run with different machine code in a CPU. This technique is sometimes used by computer viruses, shellcodes and computer worms to hide their presence. Encryption is the most common method to hide code. With encryption, the main body of the code (also called its payload) is encrypted and will appear meaningless. For the code to function as before, a decryption function is added to the code. When the code is executed this function reads the payload and decrypts it before executing it in turn. Encryption alone is not polymorphism. To gain polymorphic behavior, the encryptor/decryptor pair is mutated with each copy of the code. This allows different versions of some code which all function the same. (en)
foaf:isPrimaryTopicOf	http://en.wikipedia.org/wiki/Polymorphic_code
is differentFrom of	Polymorphism (computer science)
is Wikipage redirect of	Polymorphic malware Pollymorphic code Polymorphic virus
is Link from a Wikipage to another Wikipage of	Macro and security 1260 (computer virus) 3wPlayer Agobot Antivirus software Blackhole exploit kit Bomber (computer virus) Buffer overflow CTX (computer virus) Metamorphic code Obfuscation (software) Cybersecurity information technology list List of security hacking incidents Comparison of computer viruses Computer virus Content Threat Removal Heuristic (computer science) Homomorphic encryption Natas (computer virus) Dark Avenger Finjan Holdings Intrusion detection system evasion techniques

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