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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?
✍: FYIcenter.com
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 "ecparam -list_curves" - List of EC Curves
⇐ OpenSSL "pkey -pubin" - View EC Public Key
2017-06-28, ∼6887🔥, 0💬
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