Introduce ECC raw algorithms for sign and verify

As it is performed on dsa, raw sign and verify on ECC
are introduced.

Signed-off-by: Pascal Brand <pascal.brand@st.com>

src/headers/tomcrypt_pk.h

@@ -301,10 +301,18 @@ int  ecc_decrypt_key(const unsigned char *in,  unsigned long  inlen,
                            unsigned char *out, unsigned long *outlen,
                            ecc_key *key);
 
+int ecc_sign_hash_raw(const unsigned char *in,  unsigned long inlen,
+                            void   *r,   void *s,
+                            prng_state *prng, int wprng, ecc_key *key);
+
 int  ecc_sign_hash(const unsigned char *in,  unsigned long inlen,
                          unsigned char *out, unsigned long *outlen,
                          prng_state *prng, int wprng, ecc_key *key);
 
+int ecc_verify_hash_raw(      void   *r, void   *s,
+                        const unsigned char *hash, unsigned long hashlen,
+                        int *stat, ecc_key *key);
+
 int  ecc_verify_hash(const unsigned char *sig,  unsigned long siglen,
                      const unsigned char *hash, unsigned long hashlen,
                      int *stat, ecc_key *key);