AES-GCM-SIV (RFC 8452) is a high-performance Authenticated Encryption with Associated Data (AEAD) cipher which also provides nonce reuse misuse resistance.
Suitable as a general purpose symmetric encryption cipher, AES-GCM-SIV also removes many of the "sharp edges" of AES-GCM, providing significantly better security bounds while simultaneously eliminating the most catastrophic risks of nonce reuse that exist in AES-GCM.
Decryption performance is equivalent to AES-GCM. Encryption is marginally slower.
See also:
No security audits of this crate have ever been performed, and it has not been thoroughly assessed to ensure its operation is constant-time on common CPU architectures.
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