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Commit 0f095408 by Sebastian Renner
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Gapuino mbed stuff compiles

parent 64c0f6f8
Inline Side-by-side
Showing with 220 additions and 7 deletions
templates/gapuino/include/api.h 0 → 100644
#define CRYPTO_KEYBYTES 16
#define CRYPTO_NSECBYTES 0
#define CRYPTO_NPUBBYTES 12
#define CRYPTO_ABYTES 8
#define CRYPTO_NOOVERLAP 1
templates/gapuino/include/uartp.h
#include <stdint.h>
#pragma once #pragma once
#ifdef __cplusplus #ifdef __cplusplus
extern "C" { extern "C" {
......
templates/gapuino/platformio.ini
...@@ -12,4 +12,6 @@ ...@@ -12,4 +12,6 @@
platform = riscv_gap platform = riscv_gap
board = gapuino board = gapuino
framework = mbed framework = mbed
board_upload.boot_mode = jtag_hyper
board_upload.commands = reqloop ioloop start wait
templates/gapuino/src/api.h 0 → 100644
#define CRYPTO_KEYBYTES 32
#define CRYPTO_NSECBYTES 0
#define CRYPTO_NPUBBYTES 12
#define CRYPTO_ABYTES 8
#define CRYPTO_NOOVERLAP 1
templates/gapuino/src/encrypt.c 0 → 100644
/*
TinyJAMBU-256: 256-bit key, 96-bit IV
Reference Implementation for 32-bit processor
The state consists of four 32-bit registers
state[3] || state[2] || state[1] || state[0]
Implemented by Hongjun Wu
*/
#include <string.h>
#include <stdio.h>
#include "crypto_aead.h"
#define FrameBitsIV 0x10
#define FrameBitsAD 0x30
#define FrameBitsPC 0x50 //Framebits for plaintext/ciphertext
#define FrameBitsFinalization 0x70
#define NROUND1 128*3
#define NROUND2 128*10
/*non-optimized state update function*/
void state_update(unsigned int *state, const unsigned char *key, unsigned int number_of_steps)
{
unsigned int i;
unsigned int t1, t2, t3, t4, feedback;
//in each iteration, we compute 256 steps of the state update function.
for (i = 0; i < (number_of_steps >> 5); i++)
{
t1 = (state[1] >> 15) | (state[2] << 17); // 47 = 1*32+15
t2 = (state[2] >> 6) | (state[3] << 26); // 47 + 23 = 70 = 2*32 + 6
t3 = (state[2] >> 21) | (state[3] << 11); // 47 + 23 + 15 = 85 = 2*32 + 21
t4 = (state[2] >> 27) | (state[3] << 5); // 47 + 23 + 15 + 6 = 91 = 2*32 + 27
feedback = state[0] ^ t1 ^ (~(t2 & t3)) ^ t4 ^ ((unsigned int*)key)[i & 7];
// shift 32 bit positions
state[0] = state[1]; state[1] = state[2]; state[2] = state[3];
state[3] = feedback;
}
}
// The initialization
/* The input to initialization is the 128-bit key; 96-bit IV;*/
void initialization(const unsigned char *key, const unsigned char *iv, unsigned int *state)
{
int i;
//initialize the state as 0
for (i = 0; i < 4; i++) state[i] = 0;
//update the state with the key
state_update(state, key, NROUND2);
//introduce IV into the state
for (i = 0; i < 3; i++)
{
state[1] ^= FrameBitsIV;
state_update(state, key, NROUND1);
state[3] ^= ((unsigned int*)iv)[i];
}
}
//process the associated data
void process_ad(const unsigned char *k, const unsigned char *ad, unsigned long long adlen, unsigned int *state)
{
unsigned long long i;
unsigned int j;
for (i = 0; i < (adlen >> 2); i++)
{
state[1] ^= FrameBitsAD;
state_update(state, k, NROUND1);
state[3] ^= ((unsigned int*)ad)[i];
}
// if adlen is not a multiple of 4, we process the remaining bytes
if ((adlen & 3) > 0)
{
state[1] ^= FrameBitsAD;
state_update(state, k, NROUND1);
for (j = 0; j < (adlen & 3); j++) ((unsigned char*)state)[12 + j] ^= ad[(i << 2) + j];
state[1] ^= adlen & 3;
}
}
//encrypt a message
int crypto_aead_encrypt(
unsigned char *c,unsigned long long *clen,
const unsigned char *m,unsigned long long mlen,
const unsigned char *ad,unsigned long long adlen,
const unsigned char *nsec,
const unsigned char *npub,
const unsigned char *k
)
{
unsigned long long i;
unsigned int j;
unsigned char mac[8];
unsigned int state[4];
//initialization stage
initialization(k, npub, state);
//process the associated data
process_ad(k, ad, adlen, state);
//process the plaintext
for (i = 0; i < (mlen >> 2); i++)
{
state[1] ^= FrameBitsPC;
state_update(state, k, NROUND2);
state[3] ^= ((unsigned int*)m)[i];
((unsigned int*)c)[i] = state[2] ^ ((unsigned int*)m)[i];
}
// if mlen is not a multiple of 4, we process the remaining bytes
if ((mlen & 3) > 0)
{
state[1] ^= FrameBitsPC;
state_update(state, k, NROUND2);
for (j = 0; j < (mlen & 3); j++)
{
((unsigned char*)state)[12 + j] ^= m[(i << 2) + j];
c[(i << 2) + j] = ((unsigned char*)state)[8 + j] ^ m[(i << 2) + j];
}
state[1] ^= mlen & 3;
}
//finalization stage, we assume that the tag length is 8 bytes
state[1] ^= FrameBitsFinalization;
state_update(state, k, NROUND2);
((unsigned int*)mac)[0] = state[2];
state[1] ^= FrameBitsFinalization;
state_update(state, k, NROUND1);
((unsigned int*)mac)[1] = state[2];
*clen = mlen + 8;
memcpy(c + mlen, mac, 8);
return 0;
}
//decrypt a message
int crypto_aead_decrypt(
unsigned char *m,unsigned long long *mlen,
unsigned char *nsec,
const unsigned char *c,unsigned long long clen,
const unsigned char *ad,unsigned long long adlen,
const unsigned char *npub,
const unsigned char *k
)
{
unsigned long long i;
unsigned int j, check = 0;
unsigned char mac[8];
unsigned int state[4];
*mlen = clen - 8;
//initialization stage
initialization(k, npub, state);
//process the associated data
process_ad(k, ad, adlen, state);
//process the ciphertext
for (i = 0; i < (*mlen >> 2); i++)
{
state[1] ^= FrameBitsPC;
state_update(state, k, NROUND2);
((unsigned int*)m)[i] = state[2] ^ ((unsigned int*)c)[i];
state[3] ^= ((unsigned int*)m)[i];
}
// if mlen is not a multiple of 4, we process the remaining bytes
if ((*mlen & 3) > 0)
{
state[1] ^= FrameBitsPC;
state_update(state, k, NROUND2);
for (j = 0; j < (*mlen & 3); j++)
{
m[(i << 2) + j] = c[(i << 2) + j] ^ ((unsigned char*)state)[8 + j];
((unsigned char*)state)[12 + j] ^= m[(i << 2) + j];
}
state[1] ^= *mlen & 3;
}
//finalization stage, we assume that the tag length is 8 bytes
state[1] ^= FrameBitsFinalization;
state_update(state, k, NROUND2);
((unsigned int*)mac)[0] = state[2];
state[1] ^= FrameBitsFinalization;
state_update(state, k, NROUND1);
((unsigned int*)mac)[1] = state[2];
//verification of the authentication tag
for (j = 0; j < 8; j++) { check |= (mac[j] ^ c[clen - 8 + j]); }
if (check == 0) return 0;
else return -1;
}
templates/gapuino/src/main.ino → templates/gapuino/src/main.cpp
#include "crypto_aead.h"
#include "api.h" #include "api.h"
#include "uartp.h" #include "uartp.h"
#include "crypto_aead.h"
#include "mbed.h" #include "mbed.h"
#define MAX_BYTES 100 #define MAX_BYTES 100
...@@ -23,7 +23,8 @@ unsigned long long int clen = 0; ...@@ -23,7 +23,8 @@ unsigned long long int clen = 0;
int res = 0; int res = 0;
void setup(); void setup();
void loop(); //void loop();
DigitalOut crypto_pin(CRYPTO_BUSY);
#ifdef __cplusplus #ifdef __cplusplus
extern "C" { extern "C" {
...@@ -49,12 +50,11 @@ void my_assert(bool b) { ...@@ -49,12 +50,11 @@ void my_assert(bool b) {
if (b) if (b)
return; return;
for(;;) for(;;)
yield(); wait(1);
} }
void setup() { void setup() {
device.baud(115200); device.baud(115200);
DigitalOut crypto_pin(CRYPTO_BUSY);
crypto_pin = 1; crypto_pin = 1;
wait(100); wait(100);
memset(npub, 0, CRYPTO_NPUBBYTES); memset(npub, 0, CRYPTO_NPUBBYTES);
...@@ -66,12 +66,12 @@ void setup() { ...@@ -66,12 +66,12 @@ void setup() {
device.printf("Hello, World!"); device.printf("Hello, World!");
} }
void loop() { int main() {
int res; int res;
uint16_t len = uartp_recv(cmdbuf, CMDBUF_LEN - 1); uint16_t len = uartp_recv(cmdbuf, CMDBUF_LEN - 1);
uint8_t action = cmdbuf[0]; uint8_t action = cmdbuf[0];
if (len == 0 || len > CMDBUF_LEN - 1) if (len == 0 || len > CMDBUF_LEN - 1)
return; return 1;
uint16_t l = len - 1; uint16_t l = len - 1;
uint16_t rl = 0; uint16_t rl = 0;
......
templates/gapuino/test
...@@ -28,7 +28,7 @@ def get_serial(): ...@@ -28,7 +28,7 @@ def get_serial():
devices = [ p.device for p in ports ] devices = [ p.device for p in ports ]
devices.sort() devices.sort()
# Might also be 0, one is JTAG, one UART # Might also be 0, one is JTAG, one UART
return devices[-1] return devices[0]
class UARTP: class UARTP:
......
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