Top new questions this week:
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Let us take example of secp256k1 curve. The current known public key with most leading zero (in x cordinate) is:
...
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Formula for calculating an ECDSA signature (r, s) is:
s = k-1(z + qr)
k - private key for a random point R
z - hash of a message
q - original private key
r - x(R)
I am interested in why do we need ...
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I've found the following encryption scheme
UserA: $$sk_A, pk_A = sk_A \cdot G$$
UserB: $$sk_B, pk_B = sk_B \cdot G$$
Enc: UserA
$$u \in \mathbb{Z}_q^* \\
Y = u \cdot pk_B \\
S = H(U) \oplus m \\
C = (...
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In "On Defining Proofs of Knowledge" by Mihir Bellare and Oded Goldreich, the definition of knowledge soundness (KS) is (See Definition 3.1):
Validity (with error $\kappa$): Let $p(x)>\...
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My project is to build a true random number generator that relies on the avalanche effect in a Zerner diode. This for a messaging device that uses one-time-pad encryption. Reading about similar ...
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Specifically, I want an algebra group $G$ (or ring $R$) features:
Given elements $g,h\in G$ (or $R$ ), computing $g\cdot h \in G$ (or $R$ ) is easy.
Given an element $g \in G$ (or $R$ ), finding the ...
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Greatest hits from previous weeks:
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Using CryptoJS 3.1 I noticed that using 3Des, the encrypted message always start with
U2FsdGVkX1
Why is the first part of the encryption always the same?
What information does this hold and how ...
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One runtime platform provides an API that supplies PKCS#5 padding for block cipher modes such as ECB and CBC. These modes have been defined for the triple DES, AES and Blowfish block ciphers. The ...
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I'm using Java to generate encrypted strings, and I get this warning at build time:
ECB encryption mode should not be used
So I'm wondering why I shouldn't use ECB and what I can use instead?
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I couldn't understand the avalanche effect in DES. Could someone explain how avalanche effect happens in DES
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Why do we use modular arithmetic so often in Cryptography?
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Claus Peter Schnorr recently posted a 12-page factoring method by SVP algorithms. Is it correct?
It says that the algorithm factors integers $N \approx 2^{400}$ and $N \approx 2^{800}$ by $4.2 \cdot ...
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I'm very uneducated when it comes to cryptography. I have tried to find an answer to my question, but what I've read doesn't quite cover what I'm asking.
I have thought up my own encryption algorithm ...
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Can you answer these questions?
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I'm working on a program that requires multiple key pairs from multiple algorithms to be derived from a single 128-byte master seed. However, I couldn't find an implementation for Falcon512 that ...
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Cracking an ideal block cipher is basically a brute force key enumeration. The complexity of the attack is exponential, growing as $2^b$. Cracking ECC is also exponential, but the cost grows as $2^{\...
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i'm trying to learn how commercial (for example PaloAlto or Fortigate) middleboxes intercept and decrypt TLS 1.3 traffic. To do that I started observing the TLS traffic between the client, middlebox ...
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