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

Q

How to re-encrypt an RSA key file using OpenSSL "pkey" 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 "pkey -aes*" command as shown below:

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

OpenSSL> pkey -in my_rsa_des.key -aes128 -out my_rsa_aes.key
Enter pass phrase for my_rsa_des.key: fyicenter
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 "genpkey" Command for DSA Keys

⇐ OpenSSL "pkey" - Open Encrypted RSA Keys

⇑ OpenSSL "genpkey" Command for RSA Keys

⇑⇑ OpenSSL Tutorials

2017-09-12, ∼2986🔥, 0💬

OpenSSL "genpkey -pkeyopt rsa_keygen_pubexp:1" - Bad RSA Key
Can I use 1 as the public exponent to generate an RSA private key? No. Using public exponent of 1 will generate identical RSA private key and public key as shown below: C:\Users\fyicenter>\loc al\openssl\opensslOpenSSL> genpkey -algorithm rsa -out rsa_test.key -pkeyopt rsa_keygen_bits:... 2018-01-06, ∼3583🔥, 0💬

OpenSSL "genpkey -pkeyopt rsa_keygen_pubexp:2" Runs Forever
What will happen if I use 2 as the public exponent to generate an RSA private key? OpenSSL will run forever, if you use 2 as the public exponent to generate an RSA private key, because OpenSSL can no find any private exponent to meet the RSA requirements. See the test below: C:\Users\fyicenter&g... 2017-09-08, ∼3565🔥, 0💬

OpenSSL "pkey" - Open Encrypted RSA Keys
How to open an encrypted RSA key file using OpenSSL "pkey" 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 "pkey" command, you will be prompted for the password as shown below: C:\Users\fyicenter&g... 2017-12-26, ∼3335🔥, 0💬

OpenSSL "pkeyparam" Command Options
What can I use OpenSSL "pkeyparam" command for? What are options supported by the "pkeyparam" command? OpenSSL "pkeyparam" command is a utility to view and manage key generation parameter files. Note that "pkeyparam" command is replacing the "dsaparam" command. Here are options supported by the "pke... 2017-12-26, ∼3053🔥, 0💬

OpenSSL "pkey -aes*" - Re-Encrypt RSA Keys
How to re-encrypt an RSA key file using OpenSSL "pkey" 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 "pkey -aes*" command as shown below: C:\Users\fyicenter>\loc al\openssl\op... 2017-09-12, ∼2987🔥, 0💬

OpenSSL "genpkey -des" - DES Encrypt RSA Keys
How to generate a new RSA key pair and encrypt the output with a DES password using OpenSSL "genpkey" command? If you want to secure your new RSA private key with a DES encryption, you can use the OpenSSL "genpkey -des" command as shown below: C:\Users\fyicenter>\loc al\openssl\opensslOpenSSL... 2017-12-31, ∼2815🔥, 0💬

OpenSSL "genpkey -genparam" - Generate DSA Parameters
How to generate a new DSA parameter file using OpenSSL "genpkey -genparam" command? If you need a new DSA parameter file in order to create new DSA keys, you can use the OpenSSL "genpkey -genparam" command as shown below: C:\Users\fyicenter>\loc al\openssl\openssl.exeOpenSSL> genpkey -... 2017-09-12, ∼2785🔥, 0💬

OpenSSL "genpkey" Command for DSA Keys
Where to find tutorials on using OpenSSL "genpkey" and "pkey" commands for DSA private keys? Here is a collection of tutorials on using OpenSSL "genpkey" and "pkey" commands compiled by FYIcenter.com team to generate and manage DSA (Digital Signature Algorithm) private keys OpenSSL "genpkey -genpara... 2017-09-12, ∼2747🔥, 0💬

OpenSSL "genpkey -paramfile" - Generate DSA Key
How to generate a new DSA private key using OpenSSL "genpkey" command? If you need a new DSA private key in order to create a new certificate, you can use the OpenSSL "genpkey" command as shown below: C:\Users\fyicenter>\loc al\openssl\openssl.exeOpenSSL> genpkey -paramfile my_dsa.prm ... 2017-12-21, ∼2636🔥, 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.