ARM NEON Salsa20/12.

ext/arm32-neon-salsa2012-asm/README.md

@@ -0,0 +1,6 @@
+ARM NEON (32-bit) ASM implementation of Salsa20/12
+======
+
+This is from [supercop](http://bench.cr.yp.to/supercop.html) and was originally written by Daniel J. Bernstein. Code is in the public domain like the rest of Salsa20. It's much faster than the naive implementation.
+
+It's included automatically in 32-bit Linux ARM builds. It likely will not work on 64-bit ARM, so it'll need to be ported at least. That will unfortunately keep it out of mobile versions for now since those are all going 64-bit.

ext/arm32-neon-salsa2012-asm/salsa2012.h

@@ -0,0 +1,15 @@
+#ifndef ZT_SALSA2012_ARM32NEON_ASM
+#define ZT_SALSA2012_ARM32NEON_ASM
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// ciphertext buffer, message/NULL, length, nonce (8 bytes), key (32 bytes)
+extern int zt_salsa2012_armneon3_xor(unsigned char *c,const unsigned char *m,unsigned long long len,const unsigned char *n,const unsigned char *k);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

ext/x64-salsa2012-asm/salsa2012.h

@@ -1,3 +1,6 @@
+#ifndef ZT_X64_SALSA2012_ASM
+#define ZT_X64_SALSA2012_ASM
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -9,3 +12,5 @@ extern int zt_salsa2012_amd64_xmm6(unsigned char *, unsigned long long, const un
 #ifdef __cplusplus
 }
 #endif
+
+#endif