What choices of $a$ and $b$ of the affine cipher lead to proper encryption functions
103578
Affine cipher : Why it is required to have GCD(a, m) equals to 1
92848
A specific way for deniable encryption
46732
Constructing a function with Flat and OneIdentity attribute with the property that otimes[a]:>a
135593
Decrypting Ciphertext with partial Key Fragment using LFSR and Berlekamp-Massey
80154
Selection of cryptographic functions for OAEP
64163
Using Chi-Square for Vigenère Cipher
34578
Kerckhoffs’ principles – Why should I make my cipher public?
154948
Decisional Diffie-Hellman: compute Legendre symbol of $g^{ab}$ from $g^a$ and $g^b$?
109568
For a given plaintext-ciphertext pair, how many valid AES keys are there?
82535
Is a small size block cipher usable?
107873
What is the difference between linear and affine function
33035
The difference between these 4 breaking Cipher techniques?
81079
In a Feistel cipher structure, what exactly does the "round function $F$" do?
21707
Constructing a Bijective function via an injective and surjective one.
66789
Coefficients in Shamir's Secret Sharing Scheme
43473
Turning a cipher into a hashing function
121732
Functional completeness of $\{\text{or},\text{ xor}, \text{ xnor}\}$