Essays, notes and research.
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The Cramer–Shoup Public-Key Encryption Scheme (CS1) – Explains the Cramer–Shoup encryption scheme and shows how it achieves IND-CCA2 security against adaptive chosen-ciphertext attacks under the DDH assumption and target collision-resistant hashing.
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TEE.fail: Breaking Trusted Execution Environments via DDR5 Memory Bus Interposition – Demonstrates that architectural changes in modern TEEs enable a ciphertext-based side-channel attack that can extract attestation keys and break the trust model of confidential computing systems.