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Showing 1 to 4 of 4 for “"Semantic security"”.
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Sparse graph codes for compression, sensing, and secrecy
… problems related to compression, sensing, and security. First, we construct locally encodable and decodable source codes for a simple class of sources. Local encodability refers to the property that when the original source data changes slightly, the compression produced by the source code can …
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Frontiers in Lattice Cryptography and Program Obfuscation
… not only eavesdropping attacks as required by semantic security, but also stronger coercion attacks performed after the fact. An attribute-based encryption scheme allows ``fine-grained'' access to ciphertexts, allowing for a decryption access policy to be embedded in ciphertexts and keys. We …
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On Black-Box Complexity and Adaptive, Universal Composability of Cryptographic Tasks
… the latter. Non-malleable encryption is a strong security notion for public-key encryption, guaranteeing that it is impossible to "maul" a ciphertext of a message m into a ciphertext of a related message. This security guarantee is essential for many applications such as auctions. We show how to …
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Um algoritmo de criptografia de chave pública semanticamente seguro baseado em curvas elípticas
… concepção. A primeira característica é que ele é semanticamente seguro. Isto significa que nenhum adversário limitado polinomialmente consegue obter qualquer informação parcial sobre o conteúdo que foi cifrado, nem mesmo decidir se duas cifrações distintas correspondem ou não a um mesmo conteúdo. …