1 files changed, 97 insertions, 0 deletions
diff --git a/libs/libsodium/src/crypto_sign/ed25519/sign_ed25519.c b/libs/libsodium/src/crypto_sign/ed25519/sign_ed25519.c
new file mode 100644
index 0000000000..8a69513ede
--- /dev/null
+++ b/libs/libsodium/src/crypto_sign/ed25519/sign_ed25519.c
@@ -0,0 +1,97 @@
+
+#include <string.h>
+
+#include "crypto_hash_sha512.h"
+#include "crypto_sign_ed25519.h"
+#include "ref10/sign_ed25519_ref10.h"
+
+size_t
+crypto_sign_ed25519ph_statebytes(void)
+{
+    return sizeof(crypto_sign_ed25519ph_state);
+}
+
+size_t
+crypto_sign_ed25519_bytes(void)
+{
+    return crypto_sign_ed25519_BYTES;
+}
+
+size_t
+crypto_sign_ed25519_seedbytes(void)
+{
+    return crypto_sign_ed25519_SEEDBYTES;
+}
+
+size_t
+crypto_sign_ed25519_publickeybytes(void)
+{
+    return crypto_sign_ed25519_PUBLICKEYBYTES;
+}
+
+size_t
+crypto_sign_ed25519_secretkeybytes(void)
+{
+    return crypto_sign_ed25519_SECRETKEYBYTES;
+}
+
+size_t
+crypto_sign_ed25519_messagebytes_max(void)
+{
+    return crypto_sign_ed25519_MESSAGEBYTES_MAX;
+}
+
+int
+crypto_sign_ed25519_sk_to_seed(unsigned char *seed, const unsigned char *sk)
+{
+    memmove(seed, sk, crypto_sign_ed25519_SEEDBYTES);
+
+    return 0;
+}
+
+int
+crypto_sign_ed25519_sk_to_pk(unsigned char *pk, const unsigned char *sk)
+{
+    memmove(pk, sk + crypto_sign_ed25519_SEEDBYTES,
+            crypto_sign_ed25519_PUBLICKEYBYTES);
+    return 0;
+}
+
+int
+crypto_sign_ed25519ph_init(crypto_sign_ed25519ph_state *state)
+{
+    crypto_hash_sha512_init(&state->hs);
+    return 0;
+}
+
+int
+crypto_sign_ed25519ph_update(crypto_sign_ed25519ph_state *state,
+                             const unsigned char *m, unsigned long long mlen)
+{
+    return crypto_hash_sha512_update(&state->hs, m, mlen);
+}
+
+int
+crypto_sign_ed25519ph_final_create(crypto_sign_ed25519ph_state *state,
+                                   unsigned char               *sig,
+                                   unsigned long long          *siglen_p,
+                                   const unsigned char         *sk)
+{
+    unsigned char ph[crypto_hash_sha512_BYTES];
+
+    crypto_hash_sha512_final(&state->hs, ph);
+
+    return _crypto_sign_ed25519_detached(sig, siglen_p, ph, sizeof ph, sk, 1);
+}
+
+int
+crypto_sign_ed25519ph_final_verify(crypto_sign_ed25519ph_state *state,
+                                   unsigned char               *sig,
+                                   const unsigned char         *pk)
+{
+    unsigned char ph[crypto_hash_sha512_BYTES];
+
+    crypto_hash_sha512_final(&state->hs, ph);
+
+    return _crypto_sign_ed25519_verify_detached(sig, ph, sizeof ph, pk, 1);
+}