📘 cryptography

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