diff --git a/src/libsodium/crypto_core/ed25519/core_ed25519.c b/src/libsodium/crypto_core/ed25519/core_ed25519.c
index 430ee75f..1bcf5022 100644
--- a/src/libsodium/crypto_core/ed25519/core_ed25519.c
+++ b/src/libsodium/crypto_core/ed25519/core_ed25519.c
@@ -65,3 +65,15 @@ crypto_core_ed25519_from_uniform(unsigned char *p, const unsigned char *r)
 
     return - ge25519_has_small_order(p);
 }
+
+size_t
+crypto_core_ed25519_bytes(void)
+{
+    return crypto_core_ed25519_BYTES;
+}
+
+size_t
+crypto_core_ed25519_uniformbytes(void)
+{
+    return crypto_core_ed25519_UNIFORMBYTES;
+}
diff --git a/src/libsodium/include/sodium/crypto_core_ed25519.h b/src/libsodium/include/sodium/crypto_core_ed25519.h
index f6b5820f..1536294b 100644
--- a/src/libsodium/include/sodium/crypto_core_ed25519.h
+++ b/src/libsodium/include/sodium/crypto_core_ed25519.h
@@ -9,7 +9,12 @@ extern "C" {
 #endif
 
 #define crypto_core_ed25519_BYTES 32
+SODIUM_EXPORT
+size_t crypto_core_ed25519_bytes(void);
+
 #define crypto_core_ed25519_UNIFORMBYTES 32
+SODIUM_EXPORT
+size_t crypto_core_ed25519_uniformbytes(void);
 
 SODIUM_EXPORT
 int crypto_core_ed25519_is_valid_point(const unsigned char *p);
diff --git a/test/default/core_ed25519.c b/test/default/core_ed25519.c
index ed7aeff2..cdd82199 100644
--- a/test/default/core_ed25519.c
+++ b/test/default/core_ed25519.c
@@ -103,6 +103,9 @@ main(void)
     sodium_free(p);
     sodium_free(h);
 
+    assert(crypto_core_ed25519_BYTES == crypto_core_ed25519_bytes());
+    assert(crypto_core_ed25519_UNIFORMBYTES == crypto_core_ed25519_uniformbytes());
+
     printf("OK\n");
 
     return 0;