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-rw-r--r--node/Poly1305.cpp121
1 files changed, 4 insertions, 117 deletions
diff --git a/node/Poly1305.cpp b/node/Poly1305.cpp
index eceb57b3..c670e5d0 100644
--- a/node/Poly1305.cpp
+++ b/node/Poly1305.cpp
@@ -18,115 +18,6 @@ Public domain.
namespace ZeroTier {
-#if 0
-
-// "Naive" implementation, which is slower... might still want this on some older
-// or weird platforms if the later versions have issues.
-
-static inline void add(unsigned int h[17],const unsigned int c[17])
-{
- unsigned int j;
- unsigned int u;
- u = 0;
- for (j = 0;j < 17;++j) { u += h[j] + c[j]; h[j] = u & 255; u >>= 8; }
-}
-
-static inline void squeeze(unsigned int h[17])
-{
- unsigned int j;
- unsigned int u;
- u = 0;
- for (j = 0;j < 16;++j) { u += h[j]; h[j] = u & 255; u >>= 8; }
- u += h[16]; h[16] = u & 3;
- u = 5 * (u >> 2);
- for (j = 0;j < 16;++j) { u += h[j]; h[j] = u & 255; u >>= 8; }
- u += h[16]; h[16] = u;
-}
-
-static const unsigned int minusp[17] = {
- 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 252
-} ;
-
-static inline void freeze(unsigned int h[17])
-{
- unsigned int horig[17];
- unsigned int j;
- unsigned int negative;
- for (j = 0;j < 17;++j) horig[j] = h[j];
- add(h,minusp);
- negative = -(h[16] >> 7);
- for (j = 0;j < 17;++j) h[j] ^= negative & (horig[j] ^ h[j]);
-}
-
-static inline void mulmod(unsigned int h[17],const unsigned int r[17])
-{
- unsigned int hr[17];
- unsigned int i;
- unsigned int j;
- unsigned int u;
-
- for (i = 0;i < 17;++i) {
- u = 0;
- for (j = 0;j <= i;++j) u += h[j] * r[i - j];
- for (j = i + 1;j < 17;++j) u += 320 * h[j] * r[i + 17 - j];
- hr[i] = u;
- }
- for (i = 0;i < 17;++i) h[i] = hr[i];
- squeeze(h);
-}
-
-static inline int crypto_onetimeauth(unsigned char *out,const unsigned char *in,unsigned long long inlen,const unsigned char *k)
-{
- unsigned int j;
- unsigned int r[17];
- unsigned int h[17];
- unsigned int c[17];
-
- r[0] = k[0];
- r[1] = k[1];
- r[2] = k[2];
- r[3] = k[3] & 15;
- r[4] = k[4] & 252;
- r[5] = k[5];
- r[6] = k[6];
- r[7] = k[7] & 15;
- r[8] = k[8] & 252;
- r[9] = k[9];
- r[10] = k[10];
- r[11] = k[11] & 15;
- r[12] = k[12] & 252;
- r[13] = k[13];
- r[14] = k[14];
- r[15] = k[15] & 15;
- r[16] = 0;
-
- for (j = 0;j < 17;++j) h[j] = 0;
-
- while (inlen > 0) {
- for (j = 0;j < 17;++j) c[j] = 0;
- for (j = 0;(j < 16) && (j < inlen);++j) c[j] = in[j];
- c[j] = 1;
- in += j; inlen -= j;
- add(h,c);
- mulmod(h,r);
- }
-
- freeze(h);
-
- for (j = 0;j < 16;++j) c[j] = k[j + 16];
- c[16] = 0;
- add(h,c);
- for (j = 0;j < 16;++j) out[j] = h[j];
- return 0;
-}
-
-void Poly1305::compute(void *auth,const void *data,unsigned int len,const void *key)
-{
- crypto_onetimeauth((unsigned char *)auth,(const unsigned char *)data,len,(const unsigned char *)key);
-}
-
-#endif
-
namespace {
typedef struct poly1305_context {
@@ -215,8 +106,7 @@ static inline void U64TO8(unsigned char *p, unsigned long long v)
#define U64TO8(p,v) ((*reinterpret_cast<unsigned long long *>(p)) = (v))
#endif
-static inline void
-poly1305_init(poly1305_context *ctx, const unsigned char key[32]) {
+static inline void poly1305_init(poly1305_context *ctx, const unsigned char key[32]) {
poly1305_state_internal_t *st = (poly1305_state_internal_t *)ctx;
unsigned long long t0,t1;
@@ -241,8 +131,7 @@ poly1305_init(poly1305_context *ctx, const unsigned char key[32]) {
st->final = 0;
}
-static inline void
-poly1305_blocks(poly1305_state_internal_t *st, const unsigned char *m, size_t bytes) {
+static inline void poly1305_blocks(poly1305_state_internal_t *st, const unsigned char *m, size_t bytes) {
const unsigned long long hibit = (st->final) ? 0 : ((unsigned long long)1 << 40); /* 1 << 128 */
unsigned long long r0,r1,r2;
unsigned long long s1,s2;
@@ -293,8 +182,7 @@ poly1305_blocks(poly1305_state_internal_t *st, const unsigned char *m, size_t by
st->h[2] = h2;
}
-static inline void
-poly1305_finish(poly1305_context *ctx, unsigned char mac[16]) {
+static inline void poly1305_finish(poly1305_context *ctx, unsigned char mac[16]) {
poly1305_state_internal_t *st = (poly1305_state_internal_t *)ctx;
unsigned long long h0,h1,h2,c;
unsigned long long g0,g1,g2;
@@ -582,8 +470,7 @@ poly1305_finish(poly1305_context *ctx, unsigned char mac[16]) {
#endif // MSC/GCC or not
-static inline void
-poly1305_update(poly1305_context *ctx, const unsigned char *m, size_t bytes) {
+static inline void poly1305_update(poly1305_context *ctx, const unsigned char *m, size_t bytes) {
poly1305_state_internal_t *st = (poly1305_state_internal_t *)ctx;
size_t i;