Separations among formulations of non-malleable encryption under valid ciphertext condition

ePrint Report: Separations among formulations of non-malleable encryption under valid ciphertext condition

Yodai Watanabe

Non-malleability is one of the basic security goals for encryption schemes which ensures the resistance of the scheme against ciphertext modifications in the sense that any adversary, given a ciphertext of a plaintext, cannot generate another ciphertext whose underlying plaintext is meaningfully related to the initial one. There are multiple formulations of non-malleable encryption schemes, depending on whether they are based on simulation or comparison, or …

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