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Introduction

• Rsa 2048 Encryption
• Crypto Key Generate Rsa 2048
• Generating 2048 Bit Rsa Keys Cisco Free

This document describes how to generate 2048 bit key support for Certificate Signing Request (CSR) on the Cisco IronPort Encryption Appliance (IEA).

Configure

Most of the Certificate Authorities (CAs) have stated an explicit request to have all CSRs generated with a key pair of length 2048 bit. By default, IEA Version 6.5 uses 1024 bit key length for key pair generation. In order to force the IEA to generate a key pair of length 2048, use the keytool command as described here.

Generate a Certificate

1. Log in to the IEA CLI
   
2. At the main menu, type x in order to drop into the shell.
   
3. Change to the root user:
   
4. Execute the keytool in order to create a new keystore:
   
5. Execute the keytool in order to create a CSR File:
   
6. Provide the CSR file to the Certificate Authority in order to generate a certificate. Ensure you submit it as an Apache Web Server Certficate Signing Request.
7. After you receive the .cer file from the CA, proceed to the next steps.

Import a Certificate

Note: The password used when you generate the CSR must match the keystore password in order for these procedures to work. If the CSR was created off-box, the password inputted must match the keystore password in order for these procedures to work.

You must chain the Certificate correctly

1. Generating RSA Keys Problem You want to create a shareable RSA key for authentication or encryption. Solution First, you must create the keys on both devices. We recommend using at - Selection from Cisco IOS Cookbook, 2nd Edition Book.
2. Select RSA and RSA. Please select what kind of key you want: (1) RSA and RSA (default) (2) DSA and Elgamal (3) DSA (sign only) (4) RSA (sign only) Your selection? 1 RSA keys may be between 1024 and 4096 bits long. And select 2048-bit (as Gnuk Token only suppurt this). What keysize do you want? (2048) Requested keysize is 2048 bits.
3. Jan 01, 2020  I an getting notification from our monitoring software that the SSL certificate on one of our switches (Cisco 2960) is about to expired. 12 replies Cisco. 2960X-Gigabit.mark.home.com% The key modulus size is 2048 bits% Generating 2048 bit RSA keys, keys will be non-exportable. OK (elapsed time was 9 seconds) 2960X-Gigabit.

1. Each CA Certificate must be extracted from the CER file received from the CA and then merged together in a text editor.
   

   Note: This is easiest done from a Microsoft Windows machine. Other operating systems work but are more difficult to extract.
   Certificates must be chained in this order: 1.Domain 2. Intermediate 3.Root

   
   
   1. Double-click in order to open the Certificate file (.CER file), and then click the Certification Path tab:
      
   2. Start with the mid-level of the Certification Path, click the Details tab, click Copy to File, and then name it 1.CER.
      
   3. Select Base-64 encoded X.509(.CER).
      
   4. Repeat for the Top Level CA, and name it 2.CER.
      
   5. Repeat for the server certificate, and name it 3.CER.
      
   6. Use a text editor (not notepad, but notepad++ works well) in order to open all three X.CER files and combine them in order (1 at the top, and 3 at the bottom):
      

      
      

      Note: There should be no empty lines between certificates and no empty line at the bottom.

      I'm using spacemonkeygo's openssl library to generate an RSA PrivateKey - the library also offers ways to load a private key from a PEM, but I can't figure out how to turn the private key into an. Writing RSA PrivateKey PEM to file in golang. Ask Question Asked 4 years, 3 months ago.

      
      

   7. Save as <servername>.CER.
      
   8. Upload the <servername>.CER file to the IEA at /home/admin/<servername.cer> with FTP or SCP.
      
   9. Copy /home/admin/<servername.cer> to /usr/local/postx/server/conf:
      
   
   
2. Use the IEA GUI in order to import the certificate [Keys and Certificates SSL Setup].
   

   Note: Keystore = [Install Directory]/conf/enterprisenamestore.keystore or the current name of your keystore file.
   Certificate = /usr/local/postx/server/conf/NEWCERT.CER.

   
   
   1. Check Trust CA Certs.
      
   2. Click Import Certificate
      
   
   
3. (Optional -- If a new keystore must be created). From the IEA GUI, tell the IEA to use the new keystore:
   
   1. Choose Configuration Web Server and Proxies Web Server Connection Listeners HTTPS
      
   2. Type in the path to the new keystore file:
      Example: ${postx.home}/conf/2013_5_13.keystore
      
   
   
4. Deploy Changes and restart the SMTP Adapter.

Verify

There is currently no verification procedure available for this configuration.

Tc0001(config)#crypto key generate rsa The name for the keys will be: tc0001.jinnai73.com Choose the size of the key modulus in the range of 360 to 2048 for your General Purpose Keys. Choosing a key modulus greater than 512 may take a few minutes. How many bits in the modulus 512: 2048% Generating 2048 bit RSA keys.OK tc0001(config)#. OpenSSL generating a similar 2048-bit RSA key on an Intel i7 3.6Ghz with 32MB of RAM. I chose these two scenarios because of their diversity. The first is a more common IT scenario with limited resources and the test is being run inside a guest operating system with its associated resource overhead.

Troubleshoot

There is currently no specific troubleshooting information available for this configuration.

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