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Certificate Center

Certificate tool

Generate CSR

The CSR Generation tool helps you quickly generate a Certificate Signing Request (CSR) and its corresponding private key. Simply provide the necessary application information, e.g., domain name, company name, encryption algorithm, and key length, to generate the required files with a single click.

tip

You can use all certificate tools provided by Certificate Center for free without logging into a VolcanoEngine account.

Application scenarios

You must generate a Certificate Signing Request (CSR) before applying for an SSL certificate. A CSR file contains the applicant's public key and identity information. It is the core file submitted to a Certificate Authority (CA) for certificate issuance. You can use this tool to generate a CSR and a private key. Then, submit the CSR file to the certificate application system and ensure you store your private key file securely.

Supported encryption algorithms

This tool supports the following encryption algorithms. You can select an appropriate algorithm and key strength based on your requirements:

Algorithm	Description	Optional key strength
RSA	The full name is Rivest, Shamir, Adleman, a widely used asymmetric encryption algorithm with good compatibility.	2048、3072、4096
ECC	Stands for Elliptic Curve Cryptography, an elliptic curve-based encryption algorithm. Compared to RSA, ECC provides the same level of security but with faster encryption, higher efficiency, and lower server resource consumption. Currently, all mainstream browsers support the ECC algorithm.	P256、P384、P521、P224
SM2	A public key encryption standard published by the China National Cryptography Administration and based on ECC. SM2 outperforms the RSA algorithm in both security and performance.	Supports SM2P256 only.

Procedure

Visit the CSR Generation Tool.

In the Basic information section, fill in the required information and click Generate CSR.

In the Generated Files section, view and get the generated CSR and Private Key.

The tool displays the CSR and Private Key content in PEM-encoded plaintext format. You can click the Copy icon to copy the code or click the Download button to save the file locally.

warning

Keep your Private Key secure. A leaked Private Key can lead to the unauthorized use of your certificate, posing a severe security risk.

Last updated: 2026.04.01 10:51:37