This topic describes using key pair authentication and key pair rotation in Snowflake.

1. Openssl Rsa Generate Key Pair Calculator
2. Openssl Generate Rsa Public Private Key Pair C++
3. Openssl Rsa Generate Key Pair Codes

How to Use OpenSSL to Generate RSA Keys in C/C Xiao Ling / February 27, 2014 October 29, 2019 / Security / C/C, OpenSSL, RSA 5 comments It is known that RSA is a cryptosystem which is used for the security of data transmission. I'd like to generate RSA 1024 key pairs. What I got from google is openssl genrsa -out privatekey.txt 1024 openssl rsa -in privatekey.txt -pubout -out publickey.txtbut why these two files are.

In this Topic:

Overview¶

Snowflake supports using key pair authentication for enhanced authentication security as an alternative to basic authentication (i.e.username and password).

This authentication method requires, as a minimum, a 2048-bit RSA key pair. You can generate the Privacy Enhanced Mail (i.e. PEM)private-public key pair using OpenSSL. Some of the Supported Snowflake Clients allow using encrypted private keys to connect toSnowflake. The public key is assigned to the Snowflake user who uses the Snowflake client to connect and authenticate to Snowflake.

Snowflake also supports rotating public keys in an effort to allow compliance with more robust security and governance postures.

Supported Snowflake Clients¶

The following table summarizes support for key pair authentication among Snowflake Clients. A checkmark (i.e. ✔) indicates full support.A missing checkmark indicates key pair authentication is not supported.

Configuring Key Pair Authentication¶

Complete the following steps to configure key pair authentication for all supported Snowflake clients.

Step 1: Generate the Private Key¶

Depending on which one of the Supported Snowflake Clients you use to connect to Snowflake, you have the option to generate encrypted orunencrypted private keys. Generally, it is safer to generate encrypted keys. Snowflake recommends communicating with your internal securityand governance officers to determine which key type to generate prior to completing this step.

Openssl Rsa Generate Key Pair Calculator

Tip

The command to generate an encrypted key prompts for a passphrase to regulate access to the key. Snowflake recommends using a passphrasethat complies with PCI DSS standards to protect the locally generated private key. Additionally, Snowflake recommends storing thepassphrase in a secure location. If using an encrypted key to connect to Snowflake, you will input the passphrase during the initialconnection. The passphrase is only used for protecting the private key and will never be sent to Snowflake.

To generate a long and complex passphrase based on PCI DSS standards:

1. Access the PCI Security Standards Document Library.

2. For PCI DSS, select the most recent version and your desired language.

3. Complete the form to access the document.

4. Search for Passwords/passphrasesmustmeetthefollowing: and follow the recommendations for password/passphraserequirements, testing, and guidance. Depending on the document version, the phrase is likely located in a section calledRequirement8:Identifyandauthenticateaccesstosystemcomponents (or similar name).

To start, open a terminal window and generate a private key.

You can generate either an encrypted version of the private key or an unencrypted version of the private key.

To generate an unencrypted version, use the following command:

To generate an encrypted version, use the following command (which omits “-nocrypt”):

The commands generate a private key in PEM format.

Step 2: Generate a Public Key¶

From the command line, generate the public key by referencing the private key. The following command assumes the private key is encryptedand contained in the file named rsa_key.p8.

The command generates the public key in PEM format.

Step 3: Store the Private and Public Keys Securely¶

Copy the public and private key files to a local directory for storage. Record the path to the files. Note that the private key is storedusing the PKCS#8 (Public Key Cryptography Standards) format and is encrypted using the passphrase you specified in the previous step.

However, the file should still be protected from unauthorized access using the file permission mechanism provided by your operating system.It is your responsibility to secure the file when it is not being used.

Step 4: Assign the Public Key to a Snowflake User¶

Execute an ALTER USER command to assign the public key to a Snowflake user.

Note

• Only security administrators (i.e. users with the SECURITYADMIN role) or higher can alter a user.

• Exclude the public key delimiters in the SQL statement.

Step 5: Verify the User’s Public Key Fingerprint¶

Execute a DESCRIBE USER command to verify the user’s public key fingerprint.

Note

The RSA_PUBLIC_KEY_2_FP property is described in Configuring Key Pair Rotation.

Step 6: Configure the Snowflake Client to Use Key Pair Authentication¶

Openssl Generate Rsa Public Private Key Pair C++

Update the client to use key pair authentication to connect to Snowflake.

Configuring Key Pair Rotation¶

Snowflake supports multiple active keys to allow for uninterrupted rotation. Rotate and replace your public and private keys based on theexpiration schedule you follow internally.

Currently, you can use the RSA_PUBLIC_KEY and RSA_PUBLIC_KEY_2 parameters for ALTER USER toassociate up to 2 public keys with a single user.

Complete the following steps to configure key pair rotation and rotate your keys.

Openssl Rsa Generate Key Pair Codes

1. Complete all steps in Configuring Key Pair Authentication with the following updates:

   • Generate a new private and public key set.

   • Assign the public key to the user. Set the public key value to either RSA_PUBLIC_KEY or RSA_PUBLIC_KEY_2 (whicheverkey value is not currently in use). For example:

2. Update the code to connect to Snowflake. Specify the new private key.

   Snowflake verifies the correct active public key for authentication based on the private key submitted with your connection information.

3. Remove the old public key from the user profile using an ALTER USER command.