1 files changed, 60 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/compat/sodium/sodium_25519.cpp b/comm/third_party/botan/src/lib/compat/sodium/sodium_25519.cpp
new file mode 100644
index 0000000000..e1e44b9ad4
--- /dev/null
+++ b/comm/third_party/botan/src/lib/compat/sodium/sodium_25519.cpp
@@ -0,0 +1,60 @@
+/*
+* (C) 2019 Jack Lloyd
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#include <botan/sodium.h>
+#include <botan/ed25519.h>
+#include <botan/curve25519.h>
+
+namespace Botan {
+
+int Sodium::crypto_scalarmult_curve25519(uint8_t out[32], const uint8_t scalar[32], const uint8_t point[32])
+   {
+   curve25519_donna(out, scalar, point);
+   return 0;
+   }
+
+int Sodium::crypto_scalarmult_curve25519_base(uint8_t out[32], const uint8_t scalar[32])
+   {
+   curve25519_basepoint(out, scalar);
+   return 0;
+   }
+int Sodium::crypto_sign_ed25519_detached(uint8_t sig[],
+                                         unsigned long long* sig_len,
+                                         const uint8_t msg[],
+                                         size_t msg_len,
+                                         const uint8_t sk[32])
+   {
+   ed25519_sign(sig, msg, msg_len, sk, nullptr, 0);
+
+   if(sig_len)
+      *sig_len = 64;
+   return 0;
+   }
+
+int Sodium::crypto_sign_ed25519_verify_detached(const uint8_t sig[],
+                                                const uint8_t msg[],
+                                                size_t msg_len,
+                                                const uint8_t pk[32])
+   {
+   const bool ok = ed25519_verify(msg, msg_len, sig, pk, nullptr, 0);
+   return ok ? 0 : -1;
+   }
+
+int Sodium::crypto_sign_ed25519_keypair(uint8_t pk[32], uint8_t sk[64])
+   {
+   secure_vector<uint8_t> seed(32);
+   randombytes_buf(seed.data(), seed.size());
+   return crypto_sign_ed25519_seed_keypair(pk, sk, seed.data());
+   }
+
+int Sodium::crypto_sign_ed25519_seed_keypair(uint8_t pk[], uint8_t sk[],
+                                             const uint8_t seed[])
+   {
+   ed25519_gen_keypair(pk, sk, seed);
+   return 0;
+   }
+
+}