+/* Utility functions to send a string of hex string to a ctrl */
+
+int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
+{
+ size_t len;
+
+ len = strlen(str);
+ if (len > INT_MAX)
+ return -1;
+ return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
+}
+
+int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
+{
+ unsigned char *bin;
+ long binlen;
+ int rv = -1;
+
+ bin = string_to_hex(hex, &binlen);
+ if (bin == NULL)
+ return 0;
+ if (binlen <= INT_MAX)
+ rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
+ OPENSSL_free(bin);
+ return rv;
+}
+