+# define EVP_PKEY_CTX_hkdf_mode(pctx, mode) \
+ EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
+ EVP_PKEY_CTRL_HKDF_MODE, mode, NULL)
+
+# define EVP_PKEY_CTX_set1_pbe_pass(pctx, pass, passlen) \
+ EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
+ EVP_PKEY_CTRL_PASS, passlen, (void *)(pass))
+
+# define EVP_PKEY_CTX_set1_scrypt_salt(pctx, salt, saltlen) \
+ EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DERIVE, \
+ EVP_PKEY_CTRL_SCRYPT_SALT, saltlen, (void *)(salt))
+
+# define EVP_PKEY_CTX_set_scrypt_N(pctx, n) \
+ EVP_PKEY_CTX_ctrl_uint64(pctx, -1, EVP_PKEY_OP_DERIVE, \
+ EVP_PKEY_CTRL_SCRYPT_N, n)