1 files changed, 100 insertions, 0 deletions
diff --git a/libs/libsodium/src/crypto_stream/salsa20/stream_salsa20.c b/libs/libsodium/src/crypto_stream/salsa20/stream_salsa20.c
new file mode 100644
index 0000000000..4529850136
--- /dev/null
+++ b/libs/libsodium/src/crypto_stream/salsa20/stream_salsa20.c
@@ -0,0 +1,100 @@
+#include "crypto_stream_salsa20.h"
+#include "private/common.h"
+#include "private/implementations.h"
+#include "randombytes.h"
+#include "runtime.h"
+#include "stream_salsa20.h"
+
+#ifdef HAVE_AMD64_ASM
+# include "xmm6/salsa20_xmm6.h"
+#else
+# include "ref/salsa20_ref.h"
+#endif
+#if !defined(HAVE_AMD64_ASM) && defined(HAVE_EMMINTRIN_H)
+# include "xmm6int/salsa20_xmm6int-sse2.h"
+#endif
+#if defined(HAVE_AVX2INTRIN_H) && defined(HAVE_EMMINTRIN_H) && \
+    defined(HAVE_TMMINTRIN_H) && defined(HAVE_SMMINTRIN_H)
+# include "xmm6int/salsa20_xmm6int-avx2.h"
+#endif
+
+#if HAVE_AMD64_ASM
+static const crypto_stream_salsa20_implementation *implementation =
+    &crypto_stream_salsa20_xmm6_implementation;
+#else
+static const crypto_stream_salsa20_implementation *implementation =
+    &crypto_stream_salsa20_ref_implementation;
+#endif
+
+size_t
+crypto_stream_salsa20_keybytes(void)
+{
+    return crypto_stream_salsa20_KEYBYTES;
+}
+
+size_t
+crypto_stream_salsa20_noncebytes(void)
+{
+    return crypto_stream_salsa20_NONCEBYTES;
+}
+
+size_t
+crypto_stream_salsa20_messagebytes_max(void)
+{
+    return crypto_stream_salsa20_MESSAGEBYTES_MAX;
+}
+
+int
+crypto_stream_salsa20(unsigned char *c, unsigned long long clen,
+                      const unsigned char *n, const unsigned char *k)
+{
+    return implementation->stream(c, clen, n, k);
+}
+
+int
+crypto_stream_salsa20_xor_ic(unsigned char *c, const unsigned char *m,
+                             unsigned long long mlen,
+                             const unsigned char *n, uint64_t ic,
+                             const unsigned char *k)
+{
+    return implementation->stream_xor_ic(c, m, mlen, n, ic, k);
+}
+
+int
+crypto_stream_salsa20_xor(unsigned char *c, const unsigned char *m,
+                          unsigned long long mlen, const unsigned char *n,
+                          const unsigned char *k)
+{
+    return implementation->stream_xor_ic(c, m, mlen, n, 0U, k);
+}
+
+void
+crypto_stream_salsa20_keygen(unsigned char k[crypto_stream_salsa20_KEYBYTES])
+{
+    randombytes_buf(k, crypto_stream_salsa20_KEYBYTES);
+}
+
+int
+_crypto_stream_salsa20_pick_best_implementation(void)
+{
+#ifdef HAVE_AMD64_ASM
+    implementation = &crypto_stream_salsa20_xmm6_implementation;
+#else
+    implementation = &crypto_stream_salsa20_ref_implementation;
+#endif
+
+#if defined(HAVE_AVX2INTRIN_H) && defined(HAVE_EMMINTRIN_H) && \
+    defined(HAVE_TMMINTRIN_H) && defined(HAVE_SMMINTRIN_H)
+    if (sodium_runtime_has_avx2()) {
+        implementation = &crypto_stream_salsa20_xmm6int_avx2_implementation;
+        return 0;
+    }
+#endif
+#if !defined(HAVE_AMD64_ASM) && defined(HAVE_EMMINTRIN_H)
+    if (sodium_runtime_has_sse2()) {
+        implementation = &crypto_stream_salsa20_xmm6int_sse2_implementation;
+        return 0;
+    }
+#endif
+    return 0; /* LCOV_EXCL_LINE */
+}