diff --git a/include/mbedtls/ecdsa.h b/include/mbedtls/ecdsa.h
index 9847a68..1741d2c 100644
--- a/include/mbedtls/ecdsa.h
+++ b/include/mbedtls/ecdsa.h
@@ -222,6 +222,134 @@
                                void *p_rng_blind);
 #endif /* MBEDTLS_ECDSA_DETERMINISTIC */
 
+#if !defined(MBEDTLS_ECDSA_SIGN_ALT)
+/**
+ * \brief               This function computes the ECDSA signature of a
+ *                      previously-hashed message, in a restartable way.
+ *
+ * \note                The deterministic version implemented in
+ *                      mbedtls_ecdsa_sign_det_restartable() is usually
+ *                      preferred.
+ *
+ * \note                This function is like \c mbedtls_ecdsa_sign() but
+ *                      it can return early and restart according to the
+ *                      limit set with \c mbedtls_ecp_set_max_ops() to
+ *                      reduce blocking.
+ *
+ * \note                If the bitlength of the message hash is larger
+ *                      than the bitlength of the group order, then the
+ *                      hash is truncated as defined in <em>Standards for
+ *                      Efficient Cryptography Group (SECG): SEC1 Elliptic
+ *                      Curve Cryptography</em>, section 4.1.3, step 5.
+ *
+ * \see                 ecp.h
+ *
+ * \param grp           The context for the elliptic curve to use.
+ *                      This must be initialized and have group parameters
+ *                      set, for example through mbedtls_ecp_group_load().
+ * \param r             The MPI context in which to store the first part
+ *                      the signature. This must be initialized.
+ * \param s             The MPI context in which to store the second part
+ *                      the signature. This must be initialized.
+ * \param d             The private signing key. This must be initialized
+ *                      and setup, for example through
+ *                      mbedtls_ecp_gen_privkey().
+ * \param buf           The hashed content to be signed. This must be a readable
+ *                      buffer of length \p blen Bytes. It may be \c NULL if
+ *                      \p blen is zero.
+ * \param blen          The length of \p buf in Bytes.
+ * \param f_rng         The RNG function. This must not be \c NULL.
+ * \param p_rng         The RNG context to be passed to \p f_rng. This may be
+ *                      \c NULL if \p f_rng doesn't need a context parameter.
+ * \param f_rng_blind   The RNG function used for blinding. This must not be
+ *                      \c NULL.
+ * \param p_rng_blind   The RNG context to be passed to \p f_rng. This may be
+ *                      \c NULL if \p f_rng doesn't need a context parameter.
+ * \param rs_ctx        The restart context to use. This may be \c NULL
+ *                      to disable restarting. If it is not \c NULL, it
+ *                      must point to an initialized restart context.
+ *
+ * \return              \c 0 on success.
+ * \return              #MBEDTLS_ERR_ECP_IN_PROGRESS if maximum number of
+ *                      operations was reached: see \c
+ *                      mbedtls_ecp_set_max_ops().
+ * \return              Another \c MBEDTLS_ERR_ECP_XXX, \c
+ *                      MBEDTLS_ERR_MPI_XXX or \c MBEDTLS_ERR_ASN1_XXX
+ *                      error code on failure.
+ */
+int mbedtls_ecdsa_sign_restartable(
+    mbedtls_ecp_group *grp,
+    mbedtls_mpi *r, mbedtls_mpi *s,
+    const mbedtls_mpi *d,
+    const unsigned char *buf, size_t blen,
+    int (*f_rng)(void *, unsigned char *, size_t),
+    void *p_rng,
+    int (*f_rng_blind)(void *, unsigned char *, size_t),
+    void *p_rng_blind,
+    mbedtls_ecdsa_restart_ctx *rs_ctx);
+
+#if defined(MBEDTLS_ECDSA_DETERMINISTIC)
+
+/**
+ * \brief               This function computes the ECDSA signature of a
+ *                      previously-hashed message, in a restartable way.
+ *
+ * \note                This function is like \c
+ *                      mbedtls_ecdsa_sign_det_ext() but it can return
+ *                      early and restart according to the limit set with
+ *                      \c mbedtls_ecp_set_max_ops() to reduce blocking.
+ *
+ * \note                If the bitlength of the message hash is larger
+ *                      than the bitlength of the group order, then the
+ *                      hash is truncated as defined in <em>Standards for
+ *                      Efficient Cryptography Group (SECG): SEC1 Elliptic
+ *                      Curve Cryptography</em>, section 4.1.3, step 5.
+ *
+ * \see                 ecp.h
+ *
+ * \param grp           The context for the elliptic curve to use.
+ *                      This must be initialized and have group parameters
+ *                      set, for example through mbedtls_ecp_group_load().
+ * \param r             The MPI context in which to store the first part
+ *                      the signature. This must be initialized.
+ * \param s             The MPI context in which to store the second part
+ *                      the signature. This must be initialized.
+ * \param d             The private signing key. This must be initialized
+ *                      and setup, for example through
+ *                      mbedtls_ecp_gen_privkey().
+ * \param buf           The hashed content to be signed. This must be a readable
+ *                      buffer of length \p blen Bytes. It may be \c NULL if
+ *                      \p blen is zero.
+ * \param blen          The length of \p buf in Bytes.
+ * \param f_rng_blind   The RNG function used for blinding. This must not be
+ *                      \c NULL.
+ * \param p_rng_blind   The RNG context to be passed to \p f_rng. This may be
+ *                      \c NULL if \p f_rng doesn't need a context parameter.
+ * \param rs_ctx        The restart context to use. This may be \c NULL
+ *                      to disable restarting. If it is not \c NULL, it
+ *                      must point to an initialized restart context.
+ *
+ * \return              \c 0 on success.
+ * \return              #MBEDTLS_ERR_ECP_IN_PROGRESS if maximum number of
+ *                      operations was reached: see \c
+ *                      mbedtls_ecp_set_max_ops().
+ * \return              Another \c MBEDTLS_ERR_ECP_XXX, \c
+ *                      MBEDTLS_ERR_MPI_XXX or \c MBEDTLS_ERR_ASN1_XXX
+ *                      error code on failure.
+ */
+int mbedtls_ecdsa_sign_det_restartable(
+    mbedtls_ecp_group *grp,
+    mbedtls_mpi *r, mbedtls_mpi *s,
+    const mbedtls_mpi *d, const unsigned char *buf, size_t blen,
+    mbedtls_md_type_t md_alg,
+    int (*f_rng_blind)(void *, unsigned char *, size_t),
+    void *p_rng_blind,
+    mbedtls_ecdsa_restart_ctx *rs_ctx);
+
+#endif /* MBEDTLS_ECDSA_DETERMINISTIC */
+
+#endif /* !MBEDTLS_ECDSA_SIGN_ALT */
+
 /**
  * \brief           This function verifies the ECDSA signature of a
  *                  previously-hashed message.
@@ -257,6 +385,49 @@
                          const mbedtls_ecp_point *Q, const mbedtls_mpi *r,
                          const mbedtls_mpi *s);
 
+#if !defined(MBEDTLS_ECDSA_VERIFY_ALT)
+/**
+ * \brief           This function verifies the ECDSA signature of a
+ *                  previously-hashed message, in a restartable manner
+ *
+ * \note            If the bitlength of the message hash is larger than the
+ *                  bitlength of the group order, then the hash is truncated as
+ *                  defined in <em>Standards for Efficient Cryptography Group
+ *                  (SECG): SEC1 Elliptic Curve Cryptography</em>, section
+ *                  4.1.4, step 3.
+ *
+ * \see             ecp.h
+ *
+ * \param grp       The ECP group to use.
+ *                  This must be initialized and have group parameters
+ *                  set, for example through mbedtls_ecp_group_load().
+ * \param buf       The hashed content that was signed. This must be a readable
+ *                  buffer of length \p blen Bytes. It may be \c NULL if
+ *                  \p blen is zero.
+ * \param blen      The length of \p buf in Bytes.
+ * \param Q         The public key to use for verification. This must be
+ *                  initialized and setup.
+ * \param r         The first integer of the signature.
+ *                  This must be initialized.
+ * \param s         The second integer of the signature.
+ *                  This must be initialized.
+ * \param rs_ctx    The restart context to use. This may be \c NULL to disable
+ *                  restarting. If it is not \c NULL, it must point to an
+ *                  initialized restart context.
+ *
+ * \return          \c 0 on success.
+ * \return          An \c MBEDTLS_ERR_ECP_XXX or \c MBEDTLS_MPI_XXX
+ *                  error code on failure.
+ */
+int mbedtls_ecdsa_verify_restartable(mbedtls_ecp_group *grp,
+                                     const unsigned char *buf, size_t blen,
+                                     const mbedtls_ecp_point *Q,
+                                     const mbedtls_mpi *r,
+                                     const mbedtls_mpi *s,
+                                     mbedtls_ecdsa_restart_ctx *rs_ctx);
+
+#endif /* !MBEDTLS_ECDSA_VERIFY_ALT */
+
 /**
  * \brief           This function computes the ECDSA signature and writes it
  *                  to a buffer, serialized as defined in <em>RFC-4492:
@@ -303,6 +474,8 @@
  *                  \c NULL if \p f_rng is \c NULL or doesn't use a context.
  *
  * \return          \c 0 on success.
+ * \return          #MBEDTLS_ERR_ECP_IN_PROGRESS if maximum number of
+ *                  operations was reached: see \c mbedtls_ecp_set_max_ops().
  * \return          An \c MBEDTLS_ERR_ECP_XXX, \c MBEDTLS_ERR_MPI_XXX or
  *                  \c MBEDTLS_ERR_ASN1_XXX error code on failure.
  */