Proving that a plaintext is the Paillier decryption of a certain ciphertext
38154
How to verify a number encrypted with an unknown key
146053
Proving identities (mod $pq$) using Fermat's little theorem?
42677
Proving $(\alpha + \beta)^{p^n} = \alpha^{p^n} + \beta^{p^n}$ in a finite field
55018
Prove that $A^*A + I$ is invertible
124935
AES-CBC ciphertext manipulation with known IV and plaintext!
71788
Prove existence of multiplicative inverse modulo p when p is prime
149291
Vigenere ciphertext encrypted with another vigenere cipher
14161
Proof of when is $A=X^TX$ invertible?
100134
Proving existence of a surjection $2^{\aleph_0} \to \aleph_1$ without AC
138951
Affine cipher: calculate the key from a known plaintext/ciphertext pair
145447
bilinear form - proof
111491
Affine Cipher Cryptanalysis
76347
Shorter proof for some equvalences
135593
Decrypting Ciphertext with partial Key Fragment using LFSR and Berlekamp-Massey
127764
Showing that $\mathbb{Q}[\sqrt{2}, \sqrt{3}]$ contains multiplicative inverses
109778
Proving $(x-c)|(p(x)-p(c))$
109568
For a given plaintext-ciphertext pair, how many valid AES keys are there?