* Return 0 on success, -1 on failure.
*/
int
-crypto_pk_get_digest(crypto_pk_t *pk, char *digest_out)
+crypto_pk_get_digest(const crypto_pk_t *pk, char *digest_out)
{
unsigned char *buf = NULL;
int len;
int crypto_pk_asn1_encode(crypto_pk_t *pk, char *dest, size_t dest_len);
crypto_pk_t *crypto_pk_asn1_decode(const char *str, size_t len);
-int crypto_pk_get_digest(crypto_pk_t *pk, char *digest_out);
+int crypto_pk_get_digest(const crypto_pk_t *pk, char *digest_out);
int crypto_pk_get_all_digests(crypto_pk_t *pk, digests_t *digests_out);
int crypto_pk_get_fingerprint(crypto_pk_t *pk, char *fp_out,int add_space);
int crypto_pk_get_hashed_fingerprint(crypto_pk_t *pk, char *fp_out);