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Is there an efficient algorithm that allows to construct a cryptographically secure $n$-bit hash function based on two unkeyed $n$-bit permutations?

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Is there an efficient algorithm that allows to construct a cryptographically secure $n$-bit hash function based on two unkeyed $n$-bit permutations?

Constant time multiplication in GF(2^8)

Argon2 parameters concurrent access

Using XOR to derive a data key for ECIES

7zip : Why does encrypting the same file with AES-256 not give the same output?

Are the Serpent Test Vectors incorrect?

What quality of randomness is needed for randomized side channel countermeasures?

Are there any weak nonce-misuse resistant encryption scheme?

In RSA, given public key $(n,e)$ and $d^e\bmod n$, can we factor $n$?

Creating hash data signatures using RSA-CRT

Curve25519/Montgomery curves points with order 8

How can AES 256 be implemented in C?

Are TLS connections in china mostly encrypted with AES or with SM4?

Smart's attack for secp256k1 does not work

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