Exploiting Noisy Oracles with Bayesian Inference

In cryptographic attacks, we often rely on abstracted information sources which we call “oracles”. Classic examples include the RSA parity oracle attack, which depends on an oracle disclosing the least-significant bit of a ciphertext’s decryption; Bleichenbacher’s attack on PKCS#1v1.5 RSA padding, which depends on an oracle for whether a given ciphertext’s decryption is correctly padded; […]

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