📘 cryptography

1. The problem is to decode the first word "VXEKA" which corresponds to the property "shiny". 2. This appears to be a substitution cipher where each letter in the code corresponds

1. The problem is a coded message using numbers and letters that likely represent a cipher or code. 2. To solve such puzzles, common methods include substitution ciphers, frequency

1. The problem presents a sequence of numbers and letters that appear to be a coded message or cipher. 2. Since this is not a direct math problem, the first step is to identify if

1. The problem presents a coded message using numbers separated by dots and spaces, suggesting a cipher or code to decode. 2. Since the alphabet has 26 letters, numbers above 26 li

1. The problem is to decode the Caesar cipher from the previously obtained letter sequence. 2. The Caesar cipher shifts letters by a fixed number. We try shifts from 1 to 25 to fin

1. The problem is a puzzle involving sequences of numbers separated by dots, possibly representing coded letters or arithmetic operations. 2. Since the alphabet has 26 letters, num

1. The problem is to design, analyze, and implement a complete encryption–decryption scheme using mathematical principles of cryptography. 2. The general formula for encryption can

1. المشكلة: لدينا رقمين أوليين $p$ و $q$ ونريد حساب $N = p \cdot q$ و $z = (p-1)(q-1)$ ثم اختيار عدد أولي $k$ بحيث $k$ أولي بالنسبة لـ $z$ (أي $\gcd(k,z)=1$). بعد ذلك نحسب $j$ بحيث

1. **Problem Statement:** Create and explore the Galois Field GF($2^4$) in binary and polynomial form, construct it using an irreducible polynomial, and implement an affine mapping

1. Pernyataan masalah: Diberikan teks plaintext "Teori Bilangan merupakan Ratu Matematika" dan transformasi Affine $$c_i = E(p_i) = ap_i + b \pmod{26}$$ dengan $$a \neq 0$$. Tugasn

1. **Problem statement:** Given $n_B = 25170253$ and $d_B = 772213$, compute Euler's totient function $\varphi_B$ and determine if $d_B$ is a valid private exponent. If valid, find

1. **Stating the problem:** We are given values $n_A = 2097101$ and $e_A = 22221$ and asked to find $\varphi_A$ and $d_A$, where $(\varphi_A, d_A)$ are related to RSA cryptography

1. **Problem statement:** Given the signatures ACA=256, ACB=777, and ACC=1984, if C wants to prove its identity to A, what message should C send? 2. **Understanding the problem:**

1. **Problem Statement:** You have a sequence of private keys and their corresponding Bitcoin addresses. The keys increment in some pattern, starting from a known initial key and a

1. **Problem Statement:** We want to understand the inverse MixColumns operation used in AES encryption, its utility, and demonstrate it with an example matrix by applying MixColum

1. **State the problem:** We want to show that in a substitution cipher, where no two letters are sent to the same letter, every letter appears exactly once as an image of a letter

1. The request "convert it to ECDSA signature" refers to a cryptographic operation, not a mathematical problem that involves calculations or algebraic manipulation. 2. ECDSA (Ellip