EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
EVP_PKEY_CTRL_TLS_SEED, seedlen, (void *)seed)
+/* BEGIN ERROR CODES */
+/*
+ * The following lines are auto generated by the script mkerr.pl. Any changes
+ * made after this point may be overwritten when the script is next run.
+ */
+void ERR_load_KDF_strings(void);
+
+/* Error codes for the KDF functions. */
+
+/* Function codes. */
+# define KDF_F_PKEY_TLS1_PRF_CTRL_STR 100
+# define KDF_F_PKEY_TLS1_PRF_DERIVE 101
+
+/* Reason codes. */
+# define KDF_R_INVALID_DIGEST 100
+# define KDF_R_MISSING_PARAMETER 101
+# define KDF_R_VALUE_MISSING 102
+
#ifdef __cplusplus
}
#endif