1 files changed, 22 insertions, 39 deletions

diff --git a/node/Salsa20.cpp b/node/Salsa20.cpp
index 3aa19ac6..1d4117e3 100644
--- a/node/Salsa20.cpp
+++ b/node/Salsa20.cpp
@@ -66,65 +66,49 @@ static const _s20sseconsts _S20SSECONSTANTS;
 
 namespace ZeroTier {
 
-void Salsa20::init(const void *key,unsigned int kbits,const void *iv)
-	throw()
+void Salsa20::init(const void *key,const void *iv)
 {
 #ifdef ZT_SALSA20_SSE
-	const uint32_t *k = (const uint32_t *)key;
-
+	const uint32_t *const k = (const uint32_t *)key;
 	_state.i[0] = 0x61707865;
+	_state.i[1] = 0x3320646e;
+	_state.i[2] = 0x79622d32;
 	_state.i[3] = 0x6b206574;
-	_state.i[13] = k[0];
-	_state.i[10] = k[1];
-	_state.i[7] = k[2];
 	_state.i[4] = k[3];
-	if (kbits == 256) {
-		k += 4;
-		_state.i[1] = 0x3320646e;
-		_state.i[2] = 0x79622d32;
-	} else {
-		_state.i[1] = 0x3120646e;
-		_state.i[2] = 0x79622d36;
-	}
-	_state.i[15] = k[0];
-	_state.i[12] = k[1];
-	_state.i[9] = k[2];
-	_state.i[6] = k[3];
-	_state.i[14] = ((const uint32_t *)iv)[0];
-	_state.i[11] = ((const uint32_t *)iv)[1];
 	_state.i[5] = 0;
+	_state.i[6] = k[7];
+	_state.i[7] = k[2];
 	_state.i[8] = 0;
+	_state.i[9] = k[6];
+	_state.i[10] = k[1];
+	_state.i[11] = ((const uint32_t *)iv)[1];
+	_state.i[12] = k[5];
+	_state.i[13] = k[0];
+	_state.i[14] = ((const uint32_t *)iv)[0];
+	_state.i[15] = k[4];
 #else
-	const char *constants;
-	const uint8_t *k = (const uint8_t *)key;
-
+	const char *const constants = "expand 32-byte k";
+	const uint8_t *const k = (const uint8_t *)key;
+	_state.i[0] = U8TO32_LITTLE(constants + 0);
 	_state.i[1] = U8TO32_LITTLE(k + 0);
 	_state.i[2] = U8TO32_LITTLE(k + 4);
 	_state.i[3] = U8TO32_LITTLE(k + 8);
 	_state.i[4] = U8TO32_LITTLE(k + 12);
-	if (kbits == 256) { /* recommended */
-		k += 16;
-		constants = "expand 32-byte k";
-	} else { /* kbits == 128 */
-		constants = "expand 16-byte k";
-	}
 	_state.i[5] = U8TO32_LITTLE(constants + 4);
 	_state.i[6] = U8TO32_LITTLE(((const uint8_t *)iv) + 0);
 	_state.i[7] = U8TO32_LITTLE(((const uint8_t *)iv) + 4);
 	_state.i[8] = 0;
 	_state.i[9] = 0;
 	_state.i[10] = U8TO32_LITTLE(constants + 8);
-	_state.i[11] = U8TO32_LITTLE(k + 0);
-	_state.i[12] = U8TO32_LITTLE(k + 4);
-	_state.i[13] = U8TO32_LITTLE(k + 8);
-	_state.i[14] = U8TO32_LITTLE(k + 12);
+	_state.i[11] = U8TO32_LITTLE(k + 16);
+	_state.i[12] = U8TO32_LITTLE(k + 20);
+	_state.i[13] = U8TO32_LITTLE(k + 24);
+	_state.i[14] = U8TO32_LITTLE(k + 28);
 	_state.i[15] = U8TO32_LITTLE(constants + 12);
-	_state.i[0] = U8TO32_LITTLE(constants + 0);
 #endif
 }
 
-void Salsa20::encrypt12(const void *in,void *out,unsigned int bytes)
-	throw()
+void Salsa20::crypt12(const void *in,void *out,unsigned int bytes)
 {
 	uint8_t tmp[64];
 	const uint8_t *m = (const uint8_t *)in;
@@ -623,8 +607,7 @@ void Salsa20::encrypt12(const void *in,void *out,unsigned int bytes)
 	}
 }
 
-void Salsa20::encrypt20(const void *in,void *out,unsigned int bytes)
-	throw()
+void Salsa20::crypt20(const void *in,void *out,unsigned int bytes)
 {
 	uint8_t tmp[64];
 	const uint8_t *m = (const uint8_t *)in;