Questions tagged [authenticated-encryption]
Combination of encryption and authentication in a way that ensures confidentiality, integrity and authentication
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CMPv2 Design and Implementation
did anyone tried to configure CMPv2 protocol before and what is the tool did you used to configure it ?
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Can the Threefish tweak block cipher have its fixed 128 bit tweak size extended to match the block size (256/512/1024)
The Threefish tweak block cipher has a fixed size tweak (128 bits) and three different possible key/block sizes (256/512/1024 bits).
The MCOE on-line authenticated encryption mode presents three ...
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Length of SK_ei and SK_er in IKEv2 when using AEAD
I'm currently using strongSwan as a peer for the IKEv2 protocol. I've configured it to use HMAC SHA-256 for its pseudorandom function, and AES-256-GCM-16 for its encryption and integrity algorithm.
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Sankey Diagram for Wireless sensor network, accurate?
I've designed a Sankey diagram to depict security in Wireless Body Area Networks for my thesis. It's the first time I see such a diagram used for security. I need your help.
Could you check its ...
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Peer-to-Peer message verification
I have a chat application that uses AES and RSA encryption to establish a peer-to-peer connection between two clients. Although the messages pass through a server, they are encrypted using a single ...
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HMAC on a public key verfied data: how secure it is?
I wonder how secure the HMAC is going to be if I use a public key verified data. HMAC suggests its key must be secret. I want to authenticate a set of blocks to be certain that each of them isn't ...
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Can you use ChaCha20 as one-time pad?
My knowledge of cryptography nothing beyond basic so I am by no means an expert, but I do know a bit of undergraduate mathematics including number theory.
I know that stream ciphers like ChaCha20 is ...
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Obfuscation scheme wanted
I'd like to know if there's any cryptographic scheme that implements something similar to what I'm summarizing here below.
Thanks a lot for reading and for any hint or question.
Intro-Scenery:
There's ...
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What best to put in unused nonce bytes when using AES-GCM-SIV
I want to use AES-GCM-SIV for authenticated encryption of messages in my protocol.
Since it is a wireless protocol I want to transmit as few bytes as possible. For successful decryption I need to ...
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What should be passed as the authentication tag when creating a SealedBox? And can it be made public?
When creating a SealedBox, one of the parameters which needs to be passed is an authentication tag:
https://developer.apple.com/documentation/cryptokit/aes/gcm/...
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How does SMB authentication work?
When I learned about the inner workings of the TLS protocol and what exactly it protects a connection against, I was surprised to learn that even asymmetric encryption can be defeated by a MITM attack ...
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High volume encryption with AES-GCM: AWS KMS vs CloudHSM
In my current project we will have to encrypt a lot of S3 objects (a few billions) with AWS KMS.
Our security department requires that we use KMS keys backed by CloudHSM. But since CloudHSM incurs ...
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Encrypting large files using RSA and AES-256-CBC-HMAC-SHA256
I developed an application that stores large files. Those files are stored in plain text. Now the project owner wants those files be encrypted on storage, he wants confidentiality, integrity, and ...
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Cryptanalytic attacks ASCON MAC
I am researching ASCON. I can find cryptanalytic attacks ASCON authenticated encryption and ASCON HASH, But I am not finding anything ASCON MAC. Anyone knows of any attacks, any research on this?
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Using the MAC to verify if Cipher Only attack has succeeded
I am working on an experiment to compare the efficiency of brute-force attacking block ciphers like AES and DES with reduced key sizes for different programming languages and library implementations. ...
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