introduce ecdsa_get_address_raw

ecdsa.c

@@ -418,12 +418,17 @@ void ecdsa_get_pubkeyhash(const uint8_t *pub_key, uint8_t *pubkeyhash)
 	ripemd160(h, 32, pubkeyhash);
 }
 
+void ecdsa_get_address_raw(const uint8_t *pub_key, uint8_t version, uint8_t *addr_raw)
+{
+	addr_raw[0] = version;
+	ecdsa_get_pubkeyhash(pub_key, addr_raw + 1);
+}
+
 void ecdsa_get_address(const uint8_t *pub_key, uint8_t version, char *addr)
 {
-	uint8_t data[21];
-	data[0] = version;
-	ecdsa_get_pubkeyhash(pub_key, data + 1);
-	base58_encode_check(data, 21, addr);
+	uint8_t raw[21];
+	ecdsa_get_address_raw(pub_key, version, raw);
+	base58_encode_check(raw, 21, addr);
 }
 
 void ecdsa_get_wif(const uint8_t *priv_key, uint8_t version, char *wif)

ecdsa.h

@@ -45,6 +45,7 @@ int ecdsa_sign_digest(const uint8_t *priv_key, const uint8_t *digest, uint8_t *s
 void ecdsa_get_public_key33(const uint8_t *priv_key, uint8_t *pub_key);
 void ecdsa_get_public_key65(const uint8_t *priv_key, uint8_t *pub_key);
 void ecdsa_get_pubkeyhash(const uint8_t *pub_key, uint8_t *pubkeyhash);
+void ecdsa_get_address_raw(const uint8_t *pub_key, uint8_t version, uint8_t *addr_raw);
 void ecdsa_get_address(const uint8_t *pub_key, uint8_t version, char *addr);
 void ecdsa_get_wif(const uint8_t *priv_key, uint8_t version, char *wif);
 int ecdsa_address_decode(const char *addr, uint8_t *out);