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Questions tagged [hybrid-encryption]

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Hybrid encryption tools besides openssl and gnupg? [migrated]

I'm looking for something off-the-shelf, or relatively simple/safe to construct, which can encrypt large (>2GB) backup files with a public/private keypair, and can be configured and deployed easily ...
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Newbie - Hybrid Symetric and Asymetric

Just looking for a bit of an explanation on the concept of hybrid symmetric and asymmetric encryption. My understanding: Client requests public key from https://site1.com The client receives the ...
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When do I need to use hybrid cryptography?

I need to provide confidentiality for a protocol. The protocol message size is between 100 bytes to 500 bytes. Do I need to use asymmetric encryption or hybrid cryptography?
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Encrypt with elliptic curves [closed]

The last days I was looking for a way to encrypt using ECC, without having to make the program myself. I was sure that someone should have done it for everyone by now. The best approach I had was ...
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1answer
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RSA hybrid decryption via PKCS#11 - unwrap or decrypt?

I have an application that does RSA hybrid encryption/decryption – i.e., messages are encrypted with a fresh AES key, which is then itself encrypted with RSA-OAEP and sent with the message. Decryption ...
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2answers
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Using HKDF to derive symmetric keys from a hybrid public-key encryption scheme

RFC 5869 describes HMAC-based Extract-and-Expand Key Derivation Function (HKDF). In section 4, entitled "Applications of HKDF", it states that one of the intended uses is: derivation of symmetric ...
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Is a signature scheme using a hash considered a hybrid cryptosystem?

In Wikipedia there is a page on hybrid cryptosystems. However, although cryptography contains a lot more than just encryption, only hybrid encryption using key encapsulation and data encapsulation is ...
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most efficient way (in terms of storage ovehead) to hybrid-encrypt

Alice has an ECC public key. Bob has a private key. What's the most space-efficient way (hybrid encryption) to encrypt message M, such that Bob can decrypt using his private key. ciphertext(m) needs ...
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minimal overhead of ChaCha20 + ECC

What we want? Encrypt plaintext with ChaCha20 + ECC on curve 25519 (hybrid cryptography) the result would be a data stracture X. Input: public key on Curve 25519 No authentication required (no AEAD)...
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What is the “correct” way to authenticate hybrid encryption?

In hybrid encryption we use an asymmetric encryption scheme and the recipients public key to encrypt a symmetric encryption key $K$. I will denote the resulting ciphertext $C_A$. We then use a ...