add ecc_get_oid_str

Author: karel-m

src/headers/tomcrypt_pk.h

@@ -345,6 +345,7 @@ int  ecc_set_dp(const ltc_ecc_curve *cu, ecc_key *key);
 int  ecc_generate_key(prng_state *prng, int wprng, ecc_key *key);
 int  ecc_set_key(const unsigned char *in, unsigned long inlen, int type, ecc_key *key);
 int  ecc_get_key(unsigned char *out, unsigned long *outlen, int type, const ecc_key *key);
+int  ecc_get_oid_str(char *out, unsigned long *outlen, const ecc_key *key);
 
 int  ecc_make_key(prng_state *prng, int wprng, int keysize, ecc_key *key);
 int  ecc_make_key_ex(prng_state *prng, int wprng, ecc_key *key, const ltc_ecc_curve *cu);

src/pk/ecc/ecc_get_oid_str.c

@@ -0,0 +1,32 @@
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis
+ *
+ * LibTomCrypt is a library that provides various cryptographic
+ * algorithms in a highly modular and flexible manner.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ */
+
+#include "tomcrypt.h"
+
+#ifdef LTC_MECC
+
+/** Extract OID as a string from ECC key
+  @param out    [out] destination buffer
+  @param outlen [in/out] Length of destination buffer and final output size (without terminating NUL byte)
+  @param key    The ECC key
+  Return        CRYPT_OK on success
+*/
+
+int ecc_get_oid_str(char *out, unsigned long *outlen, const ecc_key *key)
+{
+   LTC_ARGCHK(key != NULL);
+
+   return pk_oid_num_to_str(key->dp.oid, key->dp.oidlen, out, outlen);
+}
+
+#endif
+
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */