All Questions
Tagged with secure-channel or transport-security
66 questions
1
vote
0
answers
236
views
DTLS 1.2 Finished message
I am implementing DTLS 1.2 and using ECDHE_RSA_AES_128_GCM_SHA256 cipher suit.
Below is my client finished message
Can anyone explain this message?
How many bytes for verify data?
Is there ...
- 69
0
votes
2
answers
122
views
Which encryption is recommended for own messenger [closed]
I wrote my own messaging-app and now I would like to encrypt the data transfer between my client (app) and my server. What kind of encryption is easy to implement and can be recommended? I am very ...
- 101
2
votes
0
answers
75
views
What is the current encryption method used on GSM currently?
I am currently doing a mini project which sniffs GSM packets using gr-gsm and wireshark.
I was wondering if anyone knows what is the name of the current encryption algorithm method used on GSM?
- 21
6
votes
4
answers
908
views
Are there any practical ways to transfer random data securely?
The owner of the random.org service recommends that you do not use randomly generated numbers from their website in cryptographic keys. This makes sense, but it got me wondering. Is it possible to ...
- 2,429
13
votes
5
answers
8k
views
What is the most secure ECC Curve?
I have for a while used Koblitz curve (sect571k1), in ECDH and ECDSA. But I have started wonder if it is the most secure. I prefer security over efficiency. So the curve doesn't have to be the most ...
- 365
5
votes
0
answers
1k
views
Why is SSL/TLS so complicated? [closed]
I'm new to SSL/TLS and I'm staring as a new security researcher. It appears to me that SSL/TLS protocol is needlessly complex for arriving at a shared secret. The complexity results in so many bugs (e....
- 51
3
votes
1
answer
59
views
What communications security protocols exist that aren't based on PKC?
Lets say that you have two devices that need to communicate in a secure manner. These devices can share secrets before communication takes place (This sharing of secrets occurs over another secure ...
- 33
2
votes
2
answers
182
views
Initializing PGP keys by one side
I am using a PGP method to encrypt and decrypt messages shared between users A and B.
Upon the start of a message exchange is the initialization of the public and secret keys by both Users.
Lets say ...
- 227
3
votes
1
answer
894
views
Do ECDH and ECDSA combined solution provide an authenticated protocol exchange solution in MCU environment?
I'm working on a project in MCU (micro controller) environment with GPRS connection to exchange data securely with the cloud. The encryption algorithm has been selected to use AES.
I did some search ...
- 33
1
vote
2
answers
1k
views
Secure Channel - Encryption and Decryption Keys For A Message
I'm currently reading Cryptography Engineering and in Chapter 7, the topic of secure channel is discussed.
The channel described is using CTR for encryption. Below I include images with pseudo-code ...
4
votes
2
answers
748
views
Shamir's secret sharing scheme - type of channels
For information theoretic security in Shamir's [m,m] secret sharing scheme, do i need both authentic and confidential channels?
Another related query is ;is it true that if the channels are only ...
- 83
1
vote
1
answer
633
views
Secure Broadcast Channel
I've read a paper that says that one of the "assumptions" that it makes is secure broadcast. Why is this an assumption? Can't a broadcast channel be built with simple primitives--i.e. encrypt and sign ...
- 11
0
votes
1
answer
401
views
Creating a secure key
Imagine that your lecturer and the undergraduate office have conducted a key exchange protocol after which both of them hold the string $X$. Yet, it is possible that a curious student sitting next to ...
- 469
9
votes
1
answer
49k
views
What is the "shared secret" used for in IPSec VPN?
Can somebody explain what the "shared secret" and "password" do when opening/creating a VPN tunnel?
In this specific case I setup a VPN to my Fritz!Box and I had to provide a shared secret (which was ...
- 1,175
3
votes
2
answers
433
views
Security of CFB on a public channel
Given a server that broadcasts all received data to all connected peers (except the sender), two participants can have an encrypted conversation using a self-synchronizing method like CFB and some ...
- 193
3
votes
3
answers
624
views
Secure communication between multiple peers on a public channel
I am wondering how can I secure communications between multiple peers over a public channel, like an IRC channel.
With two peers it is easy - they exchange their encryption keys and decrypt the ...
- 1,679