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Length extension attack

In cryptography and computer security, a length extension attack is a type of attack where an attacker can use Hash(message1) and the length of message1 to calculate Hash(message1 ‖ message2) for an attacker-controlled message2, without needing to know the content of message1. This is problematic when the hash is used as a message authentication code…

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Eggo Liege Padded

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Cryptography Computer security Attack Hash Message authentication code

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Eggo
Liege Belgian waffle
Padded Padding (cryptography)

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Length extension attack

Nodes18

Edges17

Triples1

Avg. degree1.89

Density0.111111

Components1

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Length extension attack

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is a · 1

Length extension attack → type of attack where an attacker can use Hash

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Important terminology

message hash length attacker attack signature extension function new original valid without construction hashing internal state request key used known

Entity relationships Subject–Predicate–Object triples

Subject	Predicate	Object	Confidence	Src
Length extension attack	is a	type of attack where an attacker can use Hash	0.90	text

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