1 files changed, 130 insertions, 0 deletions
diff --git a/libs/libsodium/src/crypto_stream/chacha20/stream_chacha20.c b/libs/libsodium/src/crypto_stream/chacha20/stream_chacha20.c
new file mode 100644
index 0000000000..3b0895112c
--- /dev/null
+++ b/libs/libsodium/src/crypto_stream/chacha20/stream_chacha20.c
@@ -0,0 +1,130 @@
+#include "crypto_stream_chacha20.h"
+#include "private/common.h"
+#include "private/implementations.h"
+#include "randombytes.h"
+#include "runtime.h"
+#include "stream_chacha20.h"
+
+#include "ref/chacha20_ref.h"
+#if defined(HAVE_AVX2INTRIN_H) && defined(HAVE_EMMINTRIN_H) && \
+    defined(HAVE_TMMINTRIN_H) && defined(HAVE_SMMINTRIN_H)
+# include "dolbeau/chacha20_dolbeau-avx2.h"
+#endif
+#if defined(HAVE_EMMINTRIN_H) && defined(HAVE_TMMINTRIN_H)
+# include "dolbeau/chacha20_dolbeau-ssse3.h"
+#endif
+
+static const crypto_stream_chacha20_implementation *implementation =
+    &crypto_stream_chacha20_ref_implementation;
+
+size_t
+crypto_stream_chacha20_keybytes(void) {
+    return crypto_stream_chacha20_KEYBYTES;
+}
+
+size_t
+crypto_stream_chacha20_noncebytes(void) {
+    return crypto_stream_chacha20_NONCEBYTES;
+}
+
+size_t
+crypto_stream_chacha20_messagebytes_max(void)
+{
+    return crypto_stream_chacha20_MESSAGEBYTES_MAX;
+}
+
+size_t
+crypto_stream_chacha20_ietf_keybytes(void) {
+    return crypto_stream_chacha20_ietf_KEYBYTES;
+}
+
+size_t
+crypto_stream_chacha20_ietf_noncebytes(void) {
+    return crypto_stream_chacha20_ietf_NONCEBYTES;
+}
+
+size_t
+crypto_stream_chacha20_ietf_messagebytes_max(void)
+{
+    return crypto_stream_chacha20_ietf_MESSAGEBYTES_MAX;
+}
+
+int
+crypto_stream_chacha20(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_chacha20_ietf(unsigned char *c, unsigned long long clen,
+                            const unsigned char *n, const unsigned char *k)
+{
+    return implementation->stream_ietf(c, clen, n, k);
+}
+
+int
+crypto_stream_chacha20_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_chacha20_ietf_xor_ic(unsigned char *c, const unsigned char *m,
+                                   unsigned long long mlen,
+                                   const unsigned char *n, uint32_t ic,
+                                   const unsigned char *k)
+{
+    return implementation->stream_ietf_xor_ic(c, m, mlen, n, ic, k);
+}
+
+int
+crypto_stream_chacha20_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);
+}
+
+int
+crypto_stream_chacha20_ietf_xor(unsigned char *c, const unsigned char *m,
+                                unsigned long long mlen, const unsigned char *n,
+                                const unsigned char *k)
+{
+    return implementation->stream_ietf_xor_ic(c, m, mlen, n, 0U, k);
+}
+
+void
+crypto_stream_chacha20_ietf_keygen(unsigned char k[crypto_stream_chacha20_ietf_KEYBYTES])
+{
+    randombytes_buf(k, crypto_stream_chacha20_ietf_KEYBYTES);
+}
+
+void
+crypto_stream_chacha20_keygen(unsigned char k[crypto_stream_chacha20_KEYBYTES])
+{
+    randombytes_buf(k, crypto_stream_chacha20_KEYBYTES);
+}
+
+int
+_crypto_stream_chacha20_pick_best_implementation(void)
+{
+    implementation = &crypto_stream_chacha20_ref_implementation;
+#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_chacha20_dolbeau_avx2_implementation;
+        return 0;
+    }
+#endif
+#if defined(HAVE_EMMINTRIN_H) && defined(HAVE_TMMINTRIN_H)
+    if (sodium_runtime_has_ssse3()) {
+        implementation = &crypto_stream_chacha20_dolbeau_ssse3_implementation;
+        return 0;
+    }
+#endif
+    return 0;
+}