Module prim_subst_perm

prim_subst_perm #( .DataWidth(DataWidth), .NumRounds(NumRounds), .Decrypt(Decrypt) ) u_prim_subst_perm ( .data_i(data_i), .key_i(key_i), .data_o(data_o) );

Block Diagram of prim_subst_perm

This is a simple data diffusion primitive that is constructed in a similar fashion as the PRESENT cipher (i.e. it uses a substitution/permutation network). Note however that this is * not * cryptographically secure. The main purpose of this primitive is to provide a cheap diffusion mechanism for arbitrarily sized vectors.

See also

prim_prince, prim_present, prim_cipher_pkg

Parameters

Name	Default	Description
DataWidth	64
NumRounds	31
Decrypt	0	0 = encryp, 1 = decrypt

Ports

Name	Type	Direction	Description
data_i	wire logic [DataWidth - 1 : 0]	input
key_i	wire logic [DataWidth - 1 : 0]	input
data_o	var logic [DataWidth - 1 : 0]	output

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