OpenSSL "rsa -aes*" - Re-Encrypt RSA Keys

Q

How to re-encrypt an RSA key file using OpenSSL "rsa" command? I want to change the encryption password, and maybe change the encryption algorithm.

✍: FYIcenter.com

A

If you want to encrypt an existing RSA key file again, you can use the "rsa -aes*" command as shown below:

C:\Users\fyicenter>\local\openssl\openssl

OpenSSL> rsa -in my_rsa_des.key -out my_rsa_aes.key -aes128
Enter pass phrase for my_rsa_des.key: fyicenter
writing RSA key
Enter PEM pass phrase: fyicenter.com
Verifying - Enter PEM pass phrase: fyicenter.com

Options used in this command are:

"-in my_rsa_des.key" - Read the RSA private key file.
"-out my_rsa_aea.key" - Save the output to a file.
"-aes128" - Encrypt the output (RSA private key and public key).
"fyicenter" - The password of the input key file.
"fyicenter.com" - The password of the output key file.

⇒ OpenSSL "gendsa" and "dsa" Commands

⇐ OpenSSL "rsa" - Open Encrypted RSA Keys

⇑ OpenSSL "genrsa" and "rsa" Commands

⇑⇑ OpenSSL Tutorials

2017-01-11, 3006🔥, 0💬

OpenSSL "genrsa 32" - Generate RSA Short Keys
How to generate a new RSA key pair with a shorter key size using OpenSSL "genrsa" command? If you need a new RSA key pair with a shorter key size for testing purpose, you can use the OpenSSL "genrsa" command as shown below: C:\Users\fyicenter>\loc al\openssl\openssl.exeOpenSSL> genrsa ... 2023-09-21, ≈10🔥, 3💬

💬 2023-09-21 fredy: Good

💬 2020-10-17 FYIcenter.com: @vena, the answer is yes as shown in this tutorial.

💬 2020-10-16 vena: can we already generate 32 bits key with openssl ?

OpenSSL "genrsa -des" - DES Encrypt RSA Keys
How to generate a new RSA key pair and encrypt the output with a DES password using OpenSSL "genrsa" command? If you want to secure your new RSA private key with a DES encryption, you can use the OpenSSL "genrsa -des" command as shown below: C:\Users\fyicenter>\loc al\openssl\opensslOpenSSL&a... 2017-01-14, ∼5632🔥, 0💬

OpenSSL "rsa" - Open Encrypted RSA Keys
How to open an encrypted RSA key file using OpenSSL "rsa" command? I was told the key file is DES encrypted and I know the password. If you are trying to open a password (encrypted) RSA key file using the "rsa" command, you will be prompted for the password as shown below: C:\Users\fyicenter>... 2024-01-19, ∼5110🔥, 1💬

OpenSSL "dsaparam" - Generate DSA Parameters
How to generate a new DSA parameter file using OpenSSL "dsaparam" command? If you need a new DSA paramter file in order to create new DSA keys, you can use the OpenSSL "dsaparam" command as shown below: C:\Users\fyicenter>\loc al\openssl\openssl.exeOpenSSL> dsaparam -out my_dsa_2048.pr... 2017-01-07, ∼4980🔥, 0💬

OpenSSL "dsaparam" Command Options
What can I use OpenSSL "dsaparam" command for? What are options supported by the "dsaparam" command? OpenSSL "dsaparam" command is a utility to generate DSA parameter files that are needed to generate DSA private key and public key pairs. Because generating DSA parameters is a slow job, DSA key gene... 2017-01-07, ∼4225🔥, 0💬

OpenSSL "gendsa" and "dsa" Commands
Where to find tutorials on using OpenSSL "gendsa" and "dsa" commands? Here is a collection of tutorials on using OpenSSL "gendsa" and "dsa" commands compiled by FYIcenter.com team. Note that "gendsa" and "dsa" commands are superseded by "genpkey" and "pKey" commands now. Stop using "gendsa" and "dsa... 2017-01-11, ∼3742🔥, 0💬

OpenSSL "gendsa" Command Options
What can I use OpenSSL "gendsa" command for? What are options supported by the "gendsa" command? OpenSSL "gendsa" command is a utility to generate DSA (Digital Signature Algorithm) private key and public key pairs. Here are options supported by the "gendsa" command: C:\Users\fyicenter>\loc al\... 2017-01-07, ∼3430🔥, 0💬

OpenSSL "rsa -aes*" - Re-Encrypt RSA Keys
How to re-encrypt an RSA key file using OpenSSL "rsa" command? I want to change the encryption password, and maybe change the encryption algorithm. If you want to encrypt an existing RSA key file again, you can use the "rsa -aes*" command as shown below: C:\Users\fyicenter>\loc al\openssl\open... 2017-01-11, ∼3007🔥, 0💬

OpenSSL "genrsa 10240" - Generate RSA Long Keys
How to generate a new RSA key pair with a longer key size using OpenSSL "genrsa" command? If you need a new RSA key pair with a longer key size for testing purpose, you can use the OpenSSL "genrsa" command as shown below: C:\Users\fyicenter>time The current time is: 22:03:25.43 C:\Users\fyice... 2017-01-29, ∼2785🔥, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.