OpenSSL "genpkey ec_paramgen_curve:secp521r1"

OpenSSL "genpkey ec_paramgen_curve:secp521r1" - EC Long Keys

Q

How to generate a new EC key pair with a longer key size using OpenSSL "genpkey" command?

✍: FYIcenter.com

A

If you need a new EC key pair with a longer key size for testing purpose, you can use the OpenSSL "genpkey" command as shown below:

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

OpenSSL> genpkey -genparam -algorithm ec -out ec_test.prm 
   -pkeyopt ec_paramgen_curve:secp521r1

OpenSSL> genpkey -paramfile ec_test.prm -out ec_test.key

OpenSSL> pkey -in ec_test.key -text -noout
Private-Key: (521 bit)
priv:
    00:da:99:e4:2b:b2:56:26:32:52:b7:ff:ef:e7:7c:
    ad:26:39:92:86:a3:7c:e6:22:42:b6:00:03:4a:04:
    97:8c:cc:92:1c:d9:cc:5d:ea:18:63:55:25:d9:89:
    06:a0:70:71:40:2c:3e:23:d5:9d:0f:f5:f5:de:e7:
    5a:1a:27:56:21:fa
pub:
    04:00:0a:f4:43:d7:a5:ce:9c:9b:dc:57:4c:96:ba:
    90:16:0f:c3:37:08:6c:93:bd:fd:09:f3:e1:27:e4:
    a7:c6:cd:9c:3c:bb:4a:34:b2:8f:af:57:fb:05:13:
...

What this test tells us:

OpenSSL allows you to generate longer EC keys.

⇒ OpenSSL "ecparam -list_curves" - List of EC Curves

⇐ OpenSSL "pkey -pubin" - View EC Public Key

⇑ OpenSSL "genpkey" Command for EC Keys

⇑⇑ OpenSSL Tutorials

2017-06-28, 6172🔥, 0💬

OpenSSL "rsautl" Command for RSA Keys
Where to find tutorials on using OpenSSL "genpkey" and "rsautl" commands for RSA private keys? Here is a collection of tutorials on using OpenSSL "rsautl" command compiled by FYIcenter.com team to encrypt, decrypt, sign or verify data with RSA (Rivest, Shamir and Adleman) public and private keys. Op... 2017-05-29, 7037🔥, 0💬

OpenSSL "pkey -pubout" - Extract EC Public Key
How to extract the public key from a EC key file using OpenSSL "pkey" command? If you want to extract the public key out from a EC key file (private key an public key), you can use the OpenSSL "pkey -pubout" command as shown below: C:\Users\fyicenter>\loc al\openssl\openssl.exeOpenSSL>... 2017-07-03, 6205🔥, 0💬

OpenSSL "genpkey ec_paramgen_curve:secp521r1" - EC Long Keys
How to generate a new EC key pair with a longer key size using OpenSSL "genpkey" command? If you need a new EC key pair with a longer key size for testing purpose, you can use the OpenSSL "genpkey" command as shown below: C:\Users\fyicenter>\loc al\openssl\opensslOpenSSL> genpkey -genp... 2017-06-28, 6173🔥, 0💬

OpenSSL "pkey -pubin" - View EC Public Key
How to view contents of a EC public key file using OpenSSL "pkey" command? If you want to view contents of a EC public key stored in a file, you can use the OpenSSL "pkey -pubin" command as shown below: C:\Users\fyicenter>\loc al\openssl\openssl.exeOpenSSL> pkey -pubin -in my_ec_pub.ke... 2017-07-03, 5276🔥, 0💬

OpenSSL "genpkey -paramfile" - Generate EC Key
How to generate a new EC private key using OpenSSL "genpkey" command? If you need a new EC 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_ec.prm -ou... 2017-08-08, 3518🔥, 0💬

OpenSSL "pkey" - Open Encrypted EC Keys
How to open an encrypted EC 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) EC key file using the "pkey" command, you will be prompted for the password as shown below: C:\Users\fyicenter>... 2017-06-16, 3479🔥, 0💬

OpenSSL "pkey -text" - Print EC Key in Text
How to print private key contents in text format using OpenSSL "pkey" command? If you want to see contents of a private key in text format, you can use the OpenSSL "pkey -text" command as shown below: C:\Users\fyicenter>\loc al\openssl\openssl.exeOpenSSL> pkey -in my_ec.key -text -noou... 2017-07-21, 2556🔥, 0💬

OpenSSL "pkey -aes*" - Re-Encrypt EC Keys
How to re-encrypt a EC 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 EC key file again, you can use the "pkey -aes*" command as shown below: C:\Users\fyicenter>\loc al\openssl\opens... 2017-05-29, 2099🔥, 0💬

OpenSSL "pkeyparam -text" - Print EC Parameters in Text
How to print EC key generation parameters in text format using OpenSSL "pkeyparam" command? If you want to see contents of a EC key generation parameter file in text format, you can use the OpenSSL "pkeyparam -text" command as shown below: C:\Users\fyicenter>\loc al\openssl\openssl.exeOpenSSL... 2017-08-13, 1898🔥, 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.