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Moritz Höppner

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Multiplication in Galois fields with the xtimes function

Multiplication in Galois fields with the xtimes function

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8 min read
How to implement GHASH

How to implement GHASH

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9 min read
How to decrypt broken GCM ciphertext

How to decrypt broken GCM ciphertext

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4 min read
How to break stream ciphers with repeating keystreams

How to break stream ciphers with repeating keystreams

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2 min read
The Counter Mode - manually!

The Counter Mode - manually!

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7 min read
How to truncate CBC ciphertext

How to truncate CBC ciphertext

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8 min read
Bit flipping Attack on CBC: Change of the Ciphertext

Bit flipping Attack on CBC: Change of the Ciphertext

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5 min read
Bit flipping Attack on CBC: Change of the IV

Bit flipping Attack on CBC: Change of the IV

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3 min read
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