+static int parse_ec(char *str)
+ {
+ int curve_nid, md_nid;
+ char *md;
+ md = strchr(str, ' ');
+ if (!md)
+ return NID_undef;
+ if (!strncmp(str, "[P-256", 6))
+ curve_nid = NID_X9_62_prime256v1;
+ else if (!strncmp(str, "[P-384", 6))
+ curve_nid = NID_secp384r1;
+ else if (!strncmp(str, "[P-521", 6))
+ curve_nid = NID_secp521r1;
+ else
+ return NID_undef;
+ md_nid = parse_md(md);
+ if (md_nid == NID_undef)
+ return NID_undef;
+ return (curve_nid << 16) | md_nid;
+ }
+