OpenSSL "verify" - Validate Self-Signed Certificate

Q

How to validate a self-signed certificate using OpenSSL "verify" command?

✍: FYIcenter.com

A

You can validate your self-signed certificate using the OpenSSL "verify" command as shown below:

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

OpenSSL> verify rsa_test.crt
rsa_test.crt: C = us, ST = NY, L = New York, O = Donald Inc., OU = IT, 
   CN = www.donald.inc, emailAddress = john@donald.inc
error 18 at 0 depth lookup:self signed certificate
OK

OpenSSL> verify -trusted rsa_test.crt rsa_test.crt
rsa_test.crt: OK

OpenSSL> verify -CAfile rsa_test.crt rsa_test.crt
rsa_test.crt: OK

Commands and their behaviors used in this test:

"verify rsa_test.crt" - Validate a self-signed certificate by itself. Validation failed.
"verify -trusted rsa_test.crt rsa_test.crt" - Validate a self-signed certificate with the same certificate specified as trusted. Validation passed.
"verify -CAfile rsa_test.crt rsa_test.crt" - Validate a self-signed certificate with the same certificate specified as CA. Validation passed.

⇒ OpenSSL "req -x509 -newkey" - Generate Private Key and Certificate

⇐ OpenSSL "x509 -text" - View Self-Signed Certificate in Text

⇑ OpenSSL "req" Command

⇑⇑ OpenSSL Tutorials

2016-11-15, 2727🔥, 0💬

OpenSSL "req -pubkey" - Extract Public Key from CSR
How to extract the public key from a CSR using OpenSSL "req -pubkey" command? If you want to extract the public key from a CSR (Certificate Signing Request), you can use the OpenSSL "req -pubkey" command as shown below: C:\Users\fyicenter>\loc al\openssl\openssl.exeOpenSSL> req -in my_... 2016-11-20, 11277🔥, 0💬

OpenSSL "req -verify" - Verify Signature of CSR
How to verify the digital signature inside a CSR using OpenSSL "req -verify" command? If you want to verify the digital signature inside a CSR (Certificate Signing Request), you can use the OpenSSL "req -verify" command as shown below: C:\Users\fyicenter>\loc al\openssl\openssl.exeOpenSSL&... 2023-05-26, 9413🔥, 1💬

💬 2023-05-26 Breck: -----BEGIN CERTIFICATE REQUEST----- MIICszCCAZsCAQAwbjELMAkGA1UEBhMCRUUx ETAPBgNVBAgMCEhhcmp1bWFhMRAwDgYDVQQH DAdUYWxsaW5uMRgwFgYD...

OpenSSL "req -x509 -days" - Longer Self-Signed Certificate
Can I sign my own CSR with a longer expiration date using the OpenSSL "req -x509" command? I want to use this certificate as an internal root CA for 10 years. Yes, you can sign you own CSR (Certificate Sign Request) with a longer expiration date using the OpenSSL "req -x509 -days" command as shown b... 2016-11-11, 4157🔥, 0💬

OpenSSL "req -x509 -newkey" - Generate Private Key and Certificate
How to generate a new private key with a public key and generate a self-signed certificate using a single OpenSSL "req" command? If you do not have a pair of private key and public key, and you want to generate self-signed certificate to represent your personal identity or server identity, you can u... 2016-11-15, 3377🔥, 0💬

OpenSSL "verify" - Validate Self-Signed Certificate
How to validate a self-signed certificate using OpenSSL "verify" command? You can validate your self-signed certificate using the OpenSSL "verify" command as shown below: C:\Users\fyicenter>\loc al\openssl\openssl.exeOpenSSL> verify rsa_test.crt rsa_test.crt: C = us, ST = NY, L = New Y... 2016-11-15, 2728🔥, 0💬

OpenSSL "req -new -x509" - Generate Self-Signed Certificate
How to generate a new self-signed certificate using OpenSSL "req -new -x509" command? I have an RSA private key (including public key) ready. If you have a pair of RSA private key and public key, and you want to generate a self-signed certificate to represent your personal identity or server identit... 2016-11-12, 2684🔥, 0💬

OpenSSL "req -newkey" - Generate Private Key and CSR
How to generate a new private key with a public key and generate a CSR (Certificate Signing Request) using a single OpenSSL "req" command? If you do not have a pair of private key and public key, and you want to generate CSR (Certificate Signing Request) to represent your personal identity or server... 2016-11-12, 2548🔥, 0💬

OpenSSL "x509 -text" - View Self-Signed Certificate in Text
How to print contents of a self-signed certificate in text format using OpenSSL "x509" command? If you want to see contents of a self-signed certificate in text format, you can use the OpenSSL "x509 -text" command as shown below: C:\Users\fyicenter>\loc al\openssl\openssl.exeOpenSSL> x... 2016-11-20, 2027🔥, 0💬

OpenSSL "req -x509" - Sign My Own CSR
Can I sign my own CSR with the OpenSSL "req -x509" command? Yes, you can sign you own CSR (Certificate Sign Request) with the OpenSSL "req -x509" command as shown below. The result is a self-signed certificate. See the example below: C:\Users\fyicenter>\loc al\openssl\openssl.exeOpenSSL&g... 2016-11-08, 1718🔥, 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.