diff --git a/src/certificate/create-rootca.md b/src/certificate/create-rootca.md
index 32ff4d0..9a091e4 100644
--- a/src/certificate/create-rootca.md
+++ b/src/certificate/create-rootca.md
@@ -41,16 +41,14 @@ openssl req -x509 -new -nodes -key rootca-kdn.key -sha256 -days 3650 -subj "/C=K
 mkdir -p ../intermediate
 cd ../intermediate
 
-openssl genrsa -aes256 -out intermediate.key 4096
+openssl genrsa -aes256 -out intermediate-kdn.key 4096
 ```
+(Enter PEM pass phrase: 백세민1!)
 
 ### 2-2) Intermediate CSR 생성
 
 ```bash
-openssl req -new \
-  -key intermediate.key \
-  -subj "/C=KR/O=BSM-LAB/CN=BSM-LAB Customer Intermediate CA" \
-  -out intermediate.csr
+openssl req -new -key intermediate-kdn.key -subj "/C=KR/O=BSM-LAB/CN=BSM-LAB KDN Intermediate CA" -out intermediate-kdn.csr
 ```
 
 ### 2-3) Root로 Intermediate 인증서 서명