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Convert AES-128-CTR to pre-parsed C++ circuit #171

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Convert AES-128-CTR to pre-parsed C++ circuit #171

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a6a3941
BristolFashion: Add support for pre-parsed C++ files
kdrag0n Jul 21, 2022
e9a65b1
Use pre-parsed C++ for AES-128-CTR
kdrag0n Jul 21, 2022
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19 changes: 12 additions & 7 deletions emp-tool/circuits/aes_128_ctr.h
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Original file line number Diff line number Diff line change
Expand Up @@ -17,8 +17,11 @@
#include <errno.h>


extern unsigned int emp_tool_circuits_files_bristol_fashion_aes_128_txt_len;
extern unsigned char emp_tool_circuits_files_bristol_fashion_aes_128_txt[];
extern int emp_tool_circuits_files_bristol_fashion_aes_128_num_gate;
extern int emp_tool_circuits_files_bristol_fashion_aes_128_num_wire;
extern int emp_tool_circuits_files_bristol_fashion_aes_128_num_input;
extern int emp_tool_circuits_files_bristol_fashion_aes_128_num_output;
extern int emp_tool_circuits_files_bristol_fashion_aes_128_gate_arr[];

namespace emp {

Expand Down Expand Up @@ -104,11 +107,13 @@ class AES_128_CTR_Calculator { public:

// Sets up BristolFashion circuit for calculating aes, and allocates some space and constants.
AES_128_CTR_Calculator() {
FILE * circuit_file = fmemopen(emp_tool_circuits_files_bristol_fashion_aes_128_txt,
emp_tool_circuits_files_bristol_fashion_aes_128_txt_len,
"r");
this->circuit = std::unique_ptr<BristolFashion>(new BristolFashion(circuit_file));
fclose(circuit_file);
this->circuit = std::unique_ptr<BristolFashion>(new BristolFashion(
emp_tool_circuits_files_bristol_fashion_aes_128_num_gate,
emp_tool_circuits_files_bristol_fashion_aes_128_num_wire,
emp_tool_circuits_files_bristol_fashion_aes_128_num_input,
emp_tool_circuits_files_bristol_fashion_aes_128_num_output,
emp_tool_circuits_files_bristol_fashion_aes_128_gate_arr
));
this->counter.bits.resize(128);
}

Expand Down
27 changes: 27 additions & 0 deletions emp-tool/circuits/circuit_file.h
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Original file line number Diff line number Diff line change
Expand Up @@ -134,6 +134,16 @@ class BristolFashion { public:
vector<int> gates;
vector<block> wires;

BristolFashion(int num_gate, int num_wire, int num_input, int num_output, int * gate_arr) {
this->num_gate = num_gate;
this->num_wire = num_wire;
this->num_input = num_input;
this->num_output = num_output;
gates.resize(num_gate*4);
wires.resize(num_wire);
memcpy(gates.data(), gate_arr, num_gate*4*sizeof(int));
}

BristolFashion(FILE * file) {
this->from_file(file);
}
Expand All @@ -142,6 +152,23 @@ class BristolFashion { public:
this->from_file(file);
}

void to_file(const char * filename, const char * prefix) {
std::ofstream fout;
fout.open(filename);
fout << "int "<<string(prefix)+"_num_gate = "<<num_gate<<";\n";
fout << "int "<<string(prefix)+"_num_wire = "<<num_wire<<";\n";
fout << "int "<<string(prefix)+"_num_input = "<<num_input<<";\n";
fout << "int "<<string(prefix)+"_num_output = "<<num_output<<";\n";
fout << "int "<<string(prefix)+"_gate_arr ["<< num_gate*4 <<"] = {\n";
for(int i = 0; i < num_gate; ++i) {
for(int j = 0; j < 4; ++j)
fout<<gates[4*i+j]<<", ";
fout<<"\n";
}
fout <<"};\n";
fout.close();
}

void from_file(FILE * f) {
int tmp;
(void)fscanf(f, "%d%d\n", &num_gate, &num_wire);
Expand Down
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