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ctx by value or reference

pull/249/head
Logan007 4 years ago
parent
739bcc1632
commit
4eb96199be
3 changed files with 267 additions and 227 deletions
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  1. 315
      speck.c
  2. 35
      speck.h
  3. 14
      transform_speck.c

315
speck.c
View File

@ -9,6 +9,7 @@
#if defined (__AVX2__) // AVX support ----------------------------------------------------
#include <immintrin.h>
#define u32 uint32_t
@ -73,7 +74,7 @@
#define Rx1b(x,y,k) (x=RCS(x,8), x+=y, x^=k, y=LCS(y,3), y^=x)
#define Enc(X,Y,k,n) (Rx##n(X,Y,k[0]), Rx##n(X,Y,k[1]), Rx##n(X,Y,k[2]), Rx##n(X,Y,k[3]), Rx##n(X,Y,k[4]), Rx##n(X,Y,k[5]), Rx##n(X,Y,k[6]), Rx##n(X,Y,k[7]), \
#define Encrypt(X,Y,k,n) (Rx##n(X,Y,k[0]), Rx##n(X,Y,k[1]), Rx##n(X,Y,k[2]), Rx##n(X,Y,k[3]), Rx##n(X,Y,k[4]), Rx##n(X,Y,k[5]), Rx##n(X,Y,k[6]), Rx##n(X,Y,k[7]), \
Rx##n(X,Y,k[8]), Rx##n(X,Y,k[9]), Rx##n(X,Y,k[10]), Rx##n(X,Y,k[11]), Rx##n(X,Y,k[12]), Rx##n(X,Y,k[13]), Rx##n(X,Y,k[14]), Rx##n(X,Y,k[15]), \
Rx##n(X,Y,k[16]), Rx##n(X,Y,k[17]), Rx##n(X,Y,k[18]), Rx##n(X,Y,k[19]), Rx##n(X,Y,k[20]), Rx##n(X,Y,k[21]), Rx##n(X,Y,k[22]), Rx##n(X,Y,k[23]), \
Rx##n(X,Y,k[24]), Rx##n(X,Y,k[25]), Rx##n(X,Y,k[26]), Rx##n(X,Y,k[27]), Rx##n(X,Y,k[28]), Rx##n(X,Y,k[29]), Rx##n(X,Y,k[30]), Rx##n(X,Y,k[31]), \
@ -93,54 +94,58 @@ typedef struct {
} speck_context_t;
static int Encrypt_Xor(unsigned char *out, const unsigned char *in, u64 nonce[], speck_context_t *ctx, int numbytes)
{
u64 x[2],y[2];
u256 X[4],Y[4],Z[4];
static int speck_encrypt_xor(unsigned char *out, const unsigned char *in, u64 nonce[], speck_context_t *ctx, int numbytes) {
if (numbytes==16){
x[0]=nonce[1]; y[0]=nonce[0]; nonce[0]++;
Enc(x,y,ctx->key,1);
((u64 *)out)[1]=x[0]; ((u64 *)out)[0]=y[0];
u64 x[2], y[2];
u256 X[4], Y[4], Z[4];
if (numbytes == 16) {
x[0] = nonce[1]; y[0] = nonce[0]; nonce[0]++;
Encrypt (x, y, ctx->key, 1);
((u64 *)out)[1] = x[0]; ((u64 *)out)[0] = y[0];
return 0;
}
if (numbytes==32){
x[0]=nonce[1]; y[0]=nonce[0]; nonce[0]++;
x[1]=nonce[1]; y[1]=nonce[0]; nonce[0]++;
Enc(x,y,ctx->key,2);
((u64 *)out)[1]=x[0]^((u64 *)in)[1]; ((u64 *)out)[0]=y[0]^((u64 *)in)[0];
((u64 *)out)[3]=x[1]^((u64 *)in)[3]; ((u64 *)out)[2]=y[1]^((u64 *)in)[2];
if (numbytes == 32) {
x[0] = nonce[1]; y[0] = nonce[0]; nonce[0]++;
x[1] = nonce[1]; y[1] = nonce[0]; nonce[0]++;
Encrypt (x , y, ctx->key, 2);
((u64 *)out)[1] = x[0] ^ ((u64 *)in)[1]; ((u64 *)out)[0] = y[0] ^ ((u64 *)in)[0];
((u64 *)out)[3] = x[1] ^ ((u64 *)in)[3]; ((u64 *)out)[2] = y[1] ^ ((u64 *)in)[2];
return 0;
}
SET1(X[0],nonce[1]); SET4(Y[0],nonce[0]);
SET1 (X[0], nonce[1]); SET4 (Y[0], nonce[0]);
if (numbytes==64) Enc(X,Y,ctx->rk,4);
else{
X[1]=X[0];
Y[1]=ADD(Y[0],_four);
if (numbytes==128) Enc(X,Y,ctx->rk,8);
else{
X[2]=X[0];
Y[2]=ADD(Y[1],_four);
if (numbytes==192) Enc(X,Y,ctx->rk,12);
else{
X[3]=X[0];
Y[3]=ADD(Y[2],_four);
Enc(X,Y,ctx->rk,16);
if (numbytes == 64)
Encrypt (X, Y, ctx->rk, 4);
else {
X[1] = X[0];
Y[1] = ADD (Y[0], _four);
if (numbytes == 128)
Encrypt (X, Y, ctx->rk, 8);
else {
X[2] = X[0];
Y[2] = ADD (Y[1], _four);
if (numbytes == 192)
Encrypt (X, Y, ctx->rk, 12);
else {
X[3] = X[0];
Y[3] = ADD (Y[2], _four);
Encrypt (X, Y, ctx->rk, 16);
}
}
}
nonce[0]+=(numbytes>>4);
nonce[0] += (numbytes>>4);
XOR_STORE(in,out,X[0],Y[0]);
if (numbytes>=128) XOR_STORE(in+64,out+64,X[1],Y[1]);
if (numbytes>=192) XOR_STORE(in+128,out+128,X[2],Y[2]);
if (numbytes>=256) XOR_STORE(in+192,out+192,X[3],Y[3]);
XOR_STORE (in, out, X[0], Y[0]);
if (numbytes >= 128)
XOR_STORE (in + 64, out + 64, X[1], Y[1]);
if (numbytes >= 192)
XOR_STORE (in + 128, out + 128, X[2], Y[2]);
if (numbytes >= 256)
XOR_STORE (in + 192, out + 192, X[3], Y[3]);
return 0;
}
@ -154,46 +159,48 @@ int speck_ctr( unsigned char *out, const unsigned char *in, unsigned long long i
unsigned char block[16];
u64 * const block64 = (u64 *)block;
if (!inlen) return 0;
if (!inlen)
return 0;
nonce[0]=((u64 *)n)[0];
nonce[1]=((u64 *)n)[1];
nonce[0] = ((u64 *)n)[0];
nonce[1] = ((u64 *)n)[1];
while (inlen>=256){
Encrypt_Xor(out,in,nonce,ctx,256);
in+=256; inlen-=256; out+=256;
while (inlen >= 256) {
speck_encrypt_xor (out, in, nonce, ctx, 256);
in += 256; inlen -= 256; out += 256;
}
if (inlen>=192){
Encrypt_Xor(out,in,nonce,ctx,192);
in+=192; inlen-=192; out+=192;
if (inlen >= 192) {
speck_encrypt_xor (out, in, nonce, ctx, 192);
in += 192; inlen -= 192; out += 192;
}
if (inlen>=128){
Encrypt_Xor(out,in,nonce,ctx,128);
in+=128; inlen-=128; out+=128;
if (inlen >= 128) {
speck_encrypt_xor (out, in, nonce, ctx, 128);
in += 128; inlen -= 128; out += 128;
}
if (inlen>=64){
Encrypt_Xor(out,in,nonce,ctx,64);
in+=64; inlen-=64; out+=64;
if (inlen >= 64) {
speck_encrypt_xor (out, in, nonce, ctx, 64);
in += 64; inlen -= 64; out += 64;
}
if (inlen>=32){
Encrypt_Xor(out,in,nonce,ctx,32);
in+=32; inlen-=32; out+=32;
if (inlen >= 32) {
speck_encrypt_xor (out, in, nonce, ctx, 32);
in += 32; inlen -= 32; out += 32;
}
if (inlen>=16){
Encrypt_Xor(block,in,nonce,ctx,16);
((u64 *)out)[0]=block64[0]^((u64 *)in)[0];
((u64 *)out)[1]=block64[1]^((u64 *)in)[1];
in+=16; inlen-=16; out+=16;
if (inlen >= 16) {
speck_encrypt_xor (block, in, nonce, ctx, 16);
((u64 *)out)[0] = block64[0] ^ ((u64 *)in)[0];
((u64 *)out)[1] = block64[1] ^ ((u64 *)in)[1];
in += 16; inlen -= 16; out += 16;
}
if (inlen>0){
Encrypt_Xor(block,in,nonce,ctx,16);
for (i=0;i<inlen;i++) out[i]=block[i]^in[i];
if (inlen > 0) {
speck_encrypt_xor (block, in, nonce, ctx, 16);
for (i = 0; i < inlen; i++)
out[i] = block[i] ^ in[i];
}
return 0;
@ -204,7 +211,7 @@ int speck_expand_key (const unsigned char *k, speck_context_t *ctx) {
u64 K[4];
size_t i;
for(i = 0; i < numkeywords; i++)
for (i = 0; i < numkeywords; i++)
K[i] = ((u64 *)k)[i];
EK (K[0], K[1], K[2], K[3], ctx->rk, ctx->key);
@ -215,7 +222,10 @@ int speck_expand_key (const unsigned char *k, speck_context_t *ctx) {
#elif defined (__SSE4_2__) // SSE support -------------------------------------------------
#include <smmintrin.h>
#include <immintrin.h>
#define SPECK_CTX_BYVAL 1
#define u32 unsigned
#define u64 unsigned long long
@ -296,14 +306,14 @@ typedef struct {
} speck_context_t;
static int speck_encrypt_xor (unsigned char *out, const unsigned char *in, u64 nonce[], speck_context_t *ctx, int numbytes) {
static int speck_encrypt_xor (unsigned char *out, const unsigned char *in, u64 nonce[], const speck_context_t ctx, int numbytes) {
u64 x[2], y[2];
u128 X[4], Y[4], Z[4];
if (numbytes == 16) {
x[0] = nonce[1]; y[0] = nonce[0]; nonce[0]++;
Encrypt (x, y, ctx->key, 1);
Encrypt (x, y, ctx.key, 1);
((u64 *)out)[1] = x[0]; ((u64 *)out)[0] = y[0];
return 0;
}
@ -311,18 +321,18 @@ static int speck_encrypt_xor (unsigned char *out, const unsigned char *in, u64 n
SET1 (X[0], nonce[1]); SET2 (Y[0], nonce[0]);
if (numbytes == 32)
Encrypt (X, Y, ctx->rk, 2);
Encrypt (X, Y, ctx.rk, 2);
else {
X[1] = X[0]; Y[1] = ADD (Y[0], _two);
if (numbytes == 64)
Encrypt (X, Y, ctx->rk, 4);
Encrypt (X, Y, ctx.rk, 4);
else {
X[2] = X[0]; Y[2] = ADD (Y[1], _two);
if (numbytes == 96)
Encrypt (X, Y, ctx->rk, 6);
Encrypt (X, Y, ctx.rk, 6);
else {
X[3] = X[0]; Y[3] = ADD (Y[2], _two);
Encrypt (X, Y, ctx->rk, 8);
Encrypt (X, Y, ctx.rk, 8);
}
}
}
@ -341,21 +351,8 @@ static int speck_encrypt_xor (unsigned char *out, const unsigned char *in, u64 n
}
int speck_expand_key (const unsigned char *k, speck_context_t *ctx) {
u64 K[4];
size_t i;
for(i = 0; i < numkeywords; i++)
K[i] = ((u64 *)k)[i];
EK (K[0], K[1], K[2], K[3], ctx->rk, ctx->key);
return 0;
}
int speck_ctr (unsigned char *out, const unsigned char *in, unsigned long long inlen,
const unsigned char *n, speck_context_t *ctx) {
const unsigned char *n, const speck_context_t ctx) {
int i;
u64 nonce[2];
@ -405,6 +402,19 @@ int speck_ctr (unsigned char *out, const unsigned char *in, unsigned long long i
}
int speck_expand_key (const unsigned char *k, speck_context_t *ctx) {
u64 K[4];
size_t i;
for (i = 0; i < numkeywords; i++)
K[i] = ((u64 *)k)[i];
EK (K[0], K[1], K[2], K[3], ctx->rk, ctx->key);
return 0;
}
#elif defined (__ARM_NEON) // NEON support -------------------------------------------
@ -456,12 +466,11 @@ int speck_ctr (unsigned char *out, const unsigned char *in, unsigned long long i
Y[0]=XOR(Y[0],Z[0]), Y[1]=XOR(Y[1],Z[1]), Y[2]=XOR(Y[2],Z[2]), Y[3]=XOR(Y[3],Z[3]), \
Y[0]=XOR(X[0],Y[0]), Y[1]=XOR(X[1],Y[1]), Y[2]=XOR(X[2],Y[2]), Y[3]=XOR(X[3],Y[3]))
#define Rx1(x,y,k) (x[0]=RCS(x[0],8), x[0]+=y[0], x[0]^=k, y[0]=LCS(y[0],3), y[0]^=x[0])
#define Rx1b(x,y,k) (x=RCS(x,8), x+=y, x^=k, y=LCS(y,3), y^=x)
#define Enc(X,Y,k,n) (Rx##n(X,Y,k[0]), Rx##n(X,Y,k[1]), Rx##n(X,Y,k[2]), Rx##n(X,Y,k[3]), Rx##n(X,Y,k[4]), Rx##n(X,Y,k[5]), Rx##n(X,Y,k[6]), Rx##n(X,Y,k[7]), \
#define Encrypt(X,Y,k,n) (Rx##n(X,Y,k[0]), Rx##n(X,Y,k[1]), Rx##n(X,Y,k[2]), Rx##n(X,Y,k[3]), Rx##n(X,Y,k[4]), Rx##n(X,Y,k[5]), Rx##n(X,Y,k[6]), Rx##n(X,Y,k[7]), \
Rx##n(X,Y,k[8]), Rx##n(X,Y,k[9]), Rx##n(X,Y,k[10]), Rx##n(X,Y,k[11]), Rx##n(X,Y,k[12]), Rx##n(X,Y,k[13]), Rx##n(X,Y,k[14]), Rx##n(X,Y,k[15]), \
Rx##n(X,Y,k[16]), Rx##n(X,Y,k[17]), Rx##n(X,Y,k[18]), Rx##n(X,Y,k[19]), Rx##n(X,Y,k[20]), Rx##n(X,Y,k[21]), Rx##n(X,Y,k[22]), Rx##n(X,Y,k[23]), \
Rx##n(X,Y,k[24]), Rx##n(X,Y,k[25]), Rx##n(X,Y,k[26]), Rx##n(X,Y,k[27]), Rx##n(X,Y,k[28]), Rx##n(X,Y,k[29]), Rx##n(X,Y,k[30]), Rx##n(X,Y,k[31]), \
@ -481,53 +490,44 @@ typedef struct {
} speck_context_t;
static int Encrypt_Xor(unsigned char *out, const unsigned char *in, u64 nonce[], speck_context_t *ctx, int numbytes)
{
u64 x[2],y[2];
u128 X[4],Y[4],Z[4];
static int speck_encrypt_xor (unsigned char *out, const unsigned char *in, u64 nonce[], speck_context_t *ctx, int numbytes) {
if (numbytes==16){
x[0]=nonce[1]; y[0]=nonce[0]; nonce[0]++;
Enc(x,y,ctx->key,1);
((u64 *)out)[1]=x[0]; ((u64 *)out)[0]=y[0];
u64 x[2], y[2];
u128 X[4], Y[4], Z[4];
if (numbytes == 16) {
x[0] = nonce[1]; y[0]=nonce[0]; nonce[0]++;
Encrypt (x, y, ctx->key, 1);
((u64 *)out)[1] = x[0]; ((u64 *)out)[0] = y[0];
return 0;
}
SET1(X[0],nonce[1]); SET2(Y[0],nonce[0]);
SET1 (X[0], nonce[1]); SET2 (Y[0], nonce[0]);
if (numbytes==32) Enc(X,Y,ctx->rk,2);
else{
X[1]=X[0]; SET2(Y[1],nonce[0]);
if (numbytes==64) Enc(X,Y,ctx->rk,4);
else{
X[2]=X[0]; SET2(Y[2],nonce[0]);
if (numbytes==96) Enc(X,Y,ctx->rk,6);
else{
X[3]=X[0]; SET2(Y[3],nonce[0]);
Enc(X,Y,ctx->rk,8);
if (numbytes == 32)
Encrypt (X, Y, ctx->rk, 2);
else {
X[1] = X[0]; SET2 (Y[1], nonce[0]);
if (numbytes == 64)
Encrypt (X, Y, ctx->rk, 4);
else {
X[2] = X[0]; SET2 (Y[2], nonce[0]);
if (numbytes == 96)
Encrypt (X, Y, ctx->rk, 6);
else {
X[3] = X[0]; SET2 (Y[3], nonce[0]);
Encrypt (X, Y, ctx->rk, 8);
}
}
}
XOR_STORE(in,out,X[0],Y[0]);
if (numbytes>=64) XOR_STORE(in+32,out+32,X[1],Y[1]);
if (numbytes>=96) XOR_STORE(in+64,out+64,X[2],Y[2]);
if (numbytes>=128) XOR_STORE(in+96,out+96,X[3],Y[3]);
return 0;
}
int speck_expand_key (const unsigned char *k, speck_context_t *ctx) {
u64 K[4];
size_t i;
for(i = 0; i < numkeywords; i++)
K[i] = ((u64 *)k)[i];
EK (K[0], K[1], K[2], K[3], ctx->rk, ctx->key);
XOR_STORE (in, out, X[0], Y[0]);
if (numbytes >= 64)
XOR_STORE (in + 32, out + 32, X[1], Y[1]);
if (numbytes >= 96)
XOR_STORE (in + 64, out + 64, X[2], Y[2]);
if (numbytes >= 128)
XOR_STORE (in + 96, out + 96, X[3], Y[3]);
return 0;
}
@ -539,49 +539,64 @@ int speck_ctr (unsigned char *out, const unsigned char *in, unsigned long long i
int i;
u64 nonce[2];
unsigned char block[16];
u64 *const block64=(u64 *)block;
u64 *const block64 = (u64 *)block;
if (!inlen) return 0;
if (!inlen)
return 0;
nonce[0]=((u64 *)n)[0];
nonce[1]=((u64 *)n)[1];
nonce[0] = ((u64 *)n)[0];
nonce[1] = ((u64 *)n)[1];
while(inlen>=128){
Encrypt_Xor(out,in,nonce,ctx,128);
in+=128; inlen-=128; out+=128;
while (inlen >= 128) {
speck_encrypt_xor (out, in, nonce, ctx, 128);
in += 128; inlen -= 128; out += 128;
}
if (inlen>=96){
Encrypt_Xor(out,in,nonce,ctx,96);
in+=96; inlen-=96; out+=96;
if (inlen >= 96) {
speck_encrypt_xor (out, in, nonce, ctx, 96);
in += 96; inlen -= 96; out += 96;
}
if (inlen>=64){
Encrypt_Xor(out,in,nonce,ctx,64);
in+=64; inlen-=64; out+=64;
if (inlen >= 64) {
speck_encrypt_xor (out, in, nonce, ctx, 64);
in += 64; inlen -= 64; out += 64;
}
if (inlen>=32){
Encrypt_Xor(out,in,nonce,ctx,32);
in+=32; inlen-=32; out+=32;
if (inlen >= 32) {
speck_encrypt_xor (out, in, nonce, ctx, 32);
in += 32; inlen -= 32; out += 32;
}
if (inlen>=16){
Encrypt_Xor(block,in,nonce,ctx,16);
((u64 *)out)[0]=block64[0]^((u64 *)in)[0];
((u64 *)out)[1]=block64[1]^((u64 *)in)[1];
in+=16; inlen-=16; out+=16;
if (inlen >= 16) {
speck_encrypt_xor (block, in, nonce, ctx, 16);
((u64 *)out)[0] = block64[0] ^ ((u64 *)in)[0];
((u64 *)out)[1] = block64[1] ^ ((u64 *)in)[1];
in += 16; inlen -= 16; out += 16;
}
if (inlen>0){
Encrypt_Xor(block,in,nonce,ctx,16);
for(i=0;i<inlen;i++) out[i]=block[i]^in[i];
if (inlen > 0) {
speck_encrypt_xor (block, in, nonce, ctx, 16);
for (i = 0; i < inlen; i++)
out[i] = block[i] ^ in[i];
}
return 0;
}
int speck_expand_key (const unsigned char *k, speck_context_t *ctx) {
u64 K[4];
size_t i;
for (i = 0; i < numkeywords; i++)
K[i] = ((u64 *)k)[i];
EK (K[0], K[1], K[2], K[3], ctx->rk, ctx->key);
return 0;
}
#else // plain C ----------------------------------------------------------------
@ -665,7 +680,7 @@ int speck_expand_key (const unsigned char *k, speck_context_t *ctx) {
}
#endif // AVX, SSE, NEON, plain C
#endif // AVX, SSE, NEON, plain C ------------------------------------------------
int speck_test () {
@ -688,9 +703,11 @@ int speck_test () {
speck_context_t ctx;
speck_expand_key (key, &ctx);
#if defined (SPECK_CTX_BYVAL)
speck_ctr (pt, pt, 16, iv, ctx);
#else
speck_ctr (pt, pt, 16, iv, &ctx);
#endif
u64 i;
// fprintf (stderr, "rk00: %016llx\n", ctx.key[0]);
// fprintf (stderr, "rk33: %016llx\n", ctx.key[33]);

35
speck.h
View File

@ -1,38 +1,51 @@
#define u64 uint64_t
#if defined (__AVX2__)
#define SPECK_ALIGNED_CTX 32
#include <immintrin.h>
#define u256 __m256i
#define SPECK_ALIGNED_CTX 32
#include <immintrin.h>
#define u256 __m256i
typedef struct {
u256 rk[34];
u64 key[34];
} speck_context_t;
#elif defined (__SSE4_2__)
#define SPECK_ALIGNED_CTX 16
#include <immintrin.h>
#define u128 __m128i
#define SPECK_ALIGNED_CTX 16
#define SPECK_CTX_BYVAL 1
#include <immintrin.h>
#define u128 __m128i
typedef struct {
u128 rk[34];
u64 key[34];
} speck_context_t;
#elif defined (__ARM_NEON)
#include <arm_neon.h>
#define u128 uint64x2_t
#include <arm_neon.h>
#define u128 uint64x2_t
typedef struct {
u128 rk[34];
u64 key[34];
} speck_context_t;
#else
typedef struct {
u64 key[34];
} speck_context_t;
#endif
int speck_ctr (unsigned char *out, const unsigned char *in,
unsigned long long inlen,
int speck_ctr (unsigned char *out, const unsigned char *in, unsigned long long inlen,
const unsigned char *n,
#if defined (SPECK_CTX_BYVAL)
speck_context_t ctx);
#else
speck_context_t *ctx);
#endif
int speck_expand_key (const unsigned char *k, speck_context_t *ctx);

14
transform_speck.c
View File

@ -102,7 +102,12 @@ static int transop_encode_speck(n2n_trans_op_t * arg,
which is (in this case) identical to original packet lentgh */
len = in_len;
speck_ctr (outbuf + TRANSOP_SPECK_PREAMBLE_SIZE, inbuf, in_len, enc_ivec, &(priv->ctx));
speck_ctr (outbuf + TRANSOP_SPECK_PREAMBLE_SIZE, inbuf, in_len, enc_ivec,
#if defined (SPECK_CTX_BYVAL)
(priv->ctx));
#else
&(priv->ctx));
#endif
traceEvent(TRACE_DEBUG, "encode_speck: encrypted %u bytes.\n", in_len);
len += TRANSOP_SPECK_PREAMBLE_SIZE; /* size of data carried in UDP. */
@ -148,7 +153,12 @@ static int transop_decode_speck(n2n_trans_op_t * arg,
htobe64(*(uint64_t*)&dec_ivec[0]),
htobe64(*(uint64_t*)&dec_ivec[8]) );
speck_ctr (outbuf, inbuf + TRANSOP_SPECK_PREAMBLE_SIZE, len, dec_ivec, &(priv->ctx));
speck_ctr (outbuf, inbuf + TRANSOP_SPECK_PREAMBLE_SIZE, len, dec_ivec,
#if defined (SPECK_CTX_BYVAL)
(priv->ctx));
#else
&(priv->ctx));
#endif
traceEvent(TRACE_DEBUG, "decode_speck: decrypted %u bytes.\n", len);
} else

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