diff --git a/src/libsodium/crypto_onetimeauth/crypto_onetimeauth.c b/src/libsodium/crypto_onetimeauth/crypto_onetimeauth.c
index 19c6e71b..2af0fdac 100644
--- a/src/libsodium/crypto_onetimeauth/crypto_onetimeauth.c
+++ b/src/libsodium/crypto_onetimeauth/crypto_onetimeauth.c
@@ -32,3 +32,28 @@ crypto_onetimeauth_verify(const unsigned char *h, const unsigned char *in,
 {
     return crypto_onetimeauth_poly1305_verify(h, in, inlen, k);
 }
+
+int
+crypto_onetimeauth_init(crypto_onetimeauth_state *state,
+                        const unsigned char *key)
+{
+    return crypto_onetimeauth_poly1305_init
+        ((crypto_onetimeauth_poly1305_state *) state, key);
+}
+
+int
+crypto_onetimeauth_update(crypto_onetimeauth_state *state,
+                          const unsigned char *in,
+                          unsigned long long inlen)
+{
+    return crypto_onetimeauth_poly1305_update
+        ((crypto_onetimeauth_poly1305_state *) state, in, inlen);
+}
+
+int
+crypto_onetimeauth_final(crypto_onetimeauth_state *state,
+                         unsigned char *out)
+{
+    return crypto_onetimeauth_poly1305_final
+        ((crypto_onetimeauth_poly1305_state *) state, out);
+}
diff --git a/src/libsodium/include/sodium/crypto_onetimeauth.h b/src/libsodium/include/sodium/crypto_onetimeauth.h
index 98c9d680..02d41a9e 100644
--- a/src/libsodium/include/sodium/crypto_onetimeauth.h
+++ b/src/libsodium/include/sodium/crypto_onetimeauth.h
@@ -13,6 +13,8 @@
 extern "C" {
 #endif
 
+typedef crypto_onetimeauth_poly1305_state crypto_onetimeauth_state;
+
 #define crypto_onetimeauth_BYTES crypto_onetimeauth_poly1305_BYTES
 SODIUM_EXPORT
 size_t  crypto_onetimeauth_bytes(void);
@@ -33,6 +35,19 @@ SODIUM_EXPORT
 int crypto_onetimeauth_verify(const unsigned char *h, const unsigned char *in,
                               unsigned long long inlen, const unsigned char *k);
 
+SODIUM_EXPORT
+int crypto_onetimeauth_init(crypto_onetimeauth_state *state,
+                            const unsigned char *key);
+
+SODIUM_EXPORT
+int crypto_onetimeauth_update(crypto_onetimeauth_state *state,
+                              const unsigned char *in,
+                              unsigned long long inlen);
+
+SODIUM_EXPORT
+int crypto_onetimeauth_final(crypto_onetimeauth_state *state,
+                             unsigned char *out);
+
 #ifdef __cplusplus
 }
 #endif