Categories:
DH Keys (134)
DSA Keys (154)
EC Keys (159)
Firefox (32)
General (13)
Google Chrome (25)
Intermediate CA (155)
Java VM (20)
JDK Keytool (25)
Microsoft CertUtil (26)
Mozilla CertUtil (18)
OpenSSL (237)
Other (17)
Portecle (38)
Publishers (961)
Revoked Certificates (21)
Root CA (87)
RSA Keys (1716)
Tools (47)
Tutorial (7)
What Is (21)
Windows (128)
Collections:
Other Resources:
OpenSSL "genpkey -pkeyopt rsa_keygen_pubexp:1" - Bad RSA Key
Can I use 1 as the public exponent to generate an RSA private key?
✍: FYIcenter.com
No. Using public exponent of 1 will generate identical RSA private key and public key
as shown below:
C:\Users\fyicenter>\local\openssl\openssl OpenSSL> genpkey -algorithm rsa -out rsa_test.key -pkeyopt rsa_keygen_bits:256 -pkeyopt rsa_keygen_pubexp:1 .........+++++++++++++++++++++++++++ ................+++++++++++++++++++++++++++ OpenSSL> pkey -in rsa_test.key -text -noout Private-Key: (256 bit) modulus: 00:9c:e6:28:67:b8:c5:7c:fa:a6:67:bc:b4:e9:eb: 64:1d:06:37:d4:a6:f7:9d:20:2d:79:6b:aa:90:ea: c7:d1:1d publicExponent: 1 (0x1) privateExponent: 1 (0x1) prime1: 00:d0:28:ab:a1:8f:18:a1:19:68:e7:7b:2d:60:e7: a1:0d prime2: 00:c0:f5:8a:ac:a2:52:4f:07:aa:80:e7:c1:fc:e6: 4c:51 exponent1: 1 (0x1) exponent2: 1 (0x1) coefficient: 2b:77:16:b9:cb:e8:56:06:08:75:20:58:14:09:b8: 2f
What this test tells us:
⇒ OpenSSL "genpkey -pkeyopt rsa_keygen_pubexp:2" Runs Forever
⇐ OpenSSL "genpkey -pkeyopt rsa_keygen_pubexp:3" - RSA Public Exponent
2018-01-06, 777👍, 0💬
Popular Posts:
What is the file name is used by Firefox to store CA certificates on Windows 7 systems? Where this f...
Can I continue to use the Web site, even if it has the "Your connection is not secure" error? Normal...
How to export a CA certificate from Google Chrome? I want to save a copy before removing the CA cert...
Certificate Summary: Subject: Yandex Mail Service Issuer: YandexExternalCA Expiration: 2014-01-17 15...
What can I use OpenSSL "x509" command for? What are options supported by the "x509" command? OpenSSL...