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2

The definition of DAE security, as given in Rogaway and Shrimpton's original paper (which both defines the security notion and proves that SIV mode satisfies it), does effectively require that a DAE scheme must protect ciphertext integrity. Specifically, the definition of DAE security (definition 1 in the paper) says that an encryption scheme is DAE secure ...


4

SIV is considered determanistic authenticated encryption because: It is deterministic; given a key, a plaintext maps to a specific ciphertext; there is no randomness involved. It is authenticated encryption; it provides privacy (that is, someone with a set of ciphertexts but without the key gets no information about the plaintexts, other than its length, ...


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Unfortunately your question doesn't fully specify the authenticated-encryption mode. In particular, AES is a block cipher, not a mode of operation, and only operates on plaintexts of some fixed length (128 bits for AES). So you need to fix a mode-of-operation for AES, such as CBC mode or CTR mode. (Never use ECB mode.) Let's assume you used CBC mode. Then ...



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