Search Results
| Search type | Search syntax |
|---|---|
| Tags | [tag] |
| Exact | "words here" |
| Author |
user:1234 user:me (yours) |
| Score |
score:3 (3+) score:0 (none) |
| Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
| Views | views:250 |
| Code | code:"if (foo != bar)" |
| Sections |
title:apples body:"apples oranges" |
| URL | url:"*.example.com" |
| Saves | in:saves |
| Status |
closed:yes duplicate:no migrated:no wiki:no |
| Types |
is:question is:answer |
| Exclude |
-[tag] -apples |
| For more details on advanced search visit our help page | |
Results tagged with public-key
Search options not deleted
user 452
An asymmetric cipher is an encryption scheme using a pair of keys, one to encrypt and a second to decrypt a message. This way the encrypting key need not be kept secret to ensure a private communication. Similarly in public key authentication, the verification key can be public and the signing key private.
1
vote
Can attacker recover private key if he have history of intermediate elliptic curve point coo...
Can attacker recover private key if he know the algorithm and have the history of previous elliptic curve point coordinates, e.g. by using rainbow table?
Yes, there are multiple algorithms to comput …
- 151k
2
votes
Accepted
Can linear congruential generator be used in public-key cryptography?
I'll look at the issue, not from an LCG perspective, but from a public key operation perspective.
Alice generates a private and a public key; she gives the public key to Bob. This public key allows B …
- 151k
3
votes
Accepted
The post-quantum public keys are long. Is it secure to map sha512 to a public key?
is it a reliable thing to map a SHA512 of Rainbow-1 or GEMMS128 public key to such key, to prevent transfer of such huge keys with every message or file transferred?
Well, the verifier would need …
- 151k
1
vote
Cannot get RSA encrypt and decrypt to work in hardware and online calculator
Any idea what I am doing wrong?
My initial inclination is that you might be interpreting the pem files incorrectly, that is:
Perhaps the value of the modulus is not what OpenSSL meant
Perhaps the …
- 151k
0
votes
Accepted
How does FORS: Forest of Random Subsets work?
How FORS works is fairly simple.
The signer selects $k$ lists of $2^a$ values each. For each such value $x_{c, d}$ (the $d$th item from the $c$th list), he computes the 'public' value $H(x_{c,d})$ (t …
- 151k
2
votes
Accepted
Hybrid key exchange in TLS 1.3
How does this concatenation provide the simultaneous benefit of both classical and quantum at the same time?
This proposal assumes the TLS 1.3 key derivation chain, where they perform an HKDF-Extrac …
- 151k
0
votes
Accepted
Efficiently detect that a ciphertext is meant for Alice
I've been racking my brain trying to think of some other clever way to make the messages detectable for only Alice without having to do a key exchange everytime or make it faster some other way, but …
- 151k
4
votes
is it possible to calculate the difference between 2 public keys of secp256k1
What you need depends on what you mean by 'point difference'.
What your code appears to be attempting to do is compute the point $X$ such that $X + K2 = K1$. That is easy to do ($X = K1 + (-K2)$, or …
- 151k
6
votes
Accepted
Why does OpenSSL RSA signing process need the public exponent?
One option that OpenSSL implements is 'blinding', which it uses to a way to avoid timing attacks.
What it does is, instead of computing $c^d \bmod N$ in the straight-forward fashion, it picks a random …
- 151k
3
votes
Can we extract public key from signature created by RSA?
Can we extract public key from signature created by RSA
I assume the question is: we have both the message and the RSA signature; can we find an RSA public key that could have been used to sign that …
- 151k
1
vote
Accepted
DH Finding A Public Key from Public key and shared secret
Is there a known feasible method for determining an unknown public key from a Diffie Helman shared secret and the other public/private key pair?
If you have the full shared secret that the Diffie He …
- 151k
1
vote
Accepted
RSA - plaintext equal ciphertext
is there any way to obtain the private key and consequently be able to decrypt the other ciphertexts?
Sometimes. A fuller answer involves number theory (but to understand why RSA works, you really …
- 151k
3
votes
Accepted
How is asymmetric encryption possible if you need a passcode in order to encrypt something?
Cant you look at the algorithm used to encrypt and find the private key from the public key that way?
Welcome to the wonderful (and nonintuitive) world of public key cryptography.
In this world, we …
- 151k
9
votes
Why did post-quantum key exchanges go extinct?
I do not see any post-quantum key exchange that creates a shared secret with the contributions of both parties, like in Diffie-Hellman.
Actually, in Kyber, the shared secret is a function of contrib …
- 151k
0
votes
Digital Signature and Encryption Process / Hierarchy
Why is the latter scenario a problem?
The issue isn't whether Bob can be sure that $S$ came from Alice, but whether he can prove it to anyone else.
He has $S$ along with the signature signed with Al …
- 151k