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OpenSSL "req -new" - Generate New CSR
How to generate a new CSR (Certificate Signing Request) using OpenSSL "req -new" 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 CSR (Certificate Signing Request) to represent your personal identity or se...
2016-12-14, 1999👍, 0💬

OpenSSL "req -text" - Print CSR in Text
How to print CSR information in text format using OpenSSL "req -text" command? If you want to see contents of a CSR file in text format, you can use the OpenSSL "req -text" command as shown below: C:\Users\fyicenter&gt;\loc al\openssl\openssl.exeOpenSSL&gt; req -in my_rsa.csr -text -noout Ce...
2016-12-04, 2366👍, 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&gt;\loc al\openssl\openssl.exeOpenSSL&...
2016-11-23, 3412👍, 0💬

OpenSSL "req -text" Output and CSR Components
How to identify CSR components in OpenSSL "req -text" command output? OpenSSL "req -text" command output displays all components in a CSR with proper labels to help you identify each component. Below is a good example of the "req -text" command output: C:\Users\fyicenter&gt;\loc al\openssl\openss...
2016-11-23, 1261👍, 0💬

OpenSSL Tutorials
Where to find tutorials on using OpenSSL to manage certificate? Here is a collection of tutorials on managing certificates with OpenSSL compiled by FYIcenter.com team. Topics include installing OpenSSL on Windows, OpenSSL commands and options, validating certificates, etc. General Information about ...
2016-11-23, 14632👍, 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&gt;\loc al\openssl\openssl.exeOpenSSL&gt; req -in my_...
2016-11-20, 3652👍, 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&gt;\loc al\openssl\openssl.exeOpenSSL&gt; x...
2016-11-20, 1070👍, 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&gt;\loc al\openssl\openssl.exeOpenSSL&gt; verify rsa_test.crt rsa_test.crt: C = us, ST = NY, L = New Y...
2016-11-15, 1272👍, 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, 1162👍, 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, 1515👍, 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, 1474👍, 0💬

OpenSSL "req -x509 -set_serial" - Certificate Serial Number
Can I sign my own CSR with a given serial number using the OpenSSL "req -x509" command? Yes, you can sign you own CSR (Certificate Sign Request) with a given serial number using the OpenSSL "req -x509 -set_serial" command as shown below. Without the "-set_serial" option, the resulting certificate wi...
2016-11-11, 9408👍, 0💬

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, 1906👍, 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&gt;\loc al\openssl\openssl.exeOpenSSL&g...
2016-11-08, 1116👍, 0💬

OpenSSL Self-Signed Certificate Components
How to identify and read each component of a self-signed certificate in OpenSSL "x509 -text" command output? OpenSSL "x509 -text" command output displays all components in a self-signed certificate with proper labels to help you identify each component. Below is a good example of the "x509 -text" co...
2016-11-08, 960👍, 0💬

OpenSSL "req -x509 -md5" - MD5 Digest for Signing
Can I using MD5 digest algorithm when generating a self-signed certificate using the OpenSSL "req -x509" command? Yes, you can use MD5 digest algorithm when generating a self-signed certificate using the OpenSSL "req -x509 -md5" command Without the "-md5" option, the default SHA256 digest algorithm ...
2016-11-05, 1631👍, 0💬

OpenSSL "req -x509" - Sign CSR with Different Key
Can I sign my own CSR with a different private key using the OpenSSL "req -x509" command? Yes, you can sign you own CSR (Certificate Sign Request) with a different private key using the OpenSSL "req -x509" command as shown below. But the result is not a true self-signed certificate. The entity name ...
2016-11-05, 1135👍, 0💬

OpenSSL "req -config" - Using Configuration File
Can I use my own configuration file when running "req" command? Yes, you can specify your own configuration file using the "-config file" option when running the "req" command. OpenSSL configuration file allows you to control the behavior of the "req" command with the following options: utf8 - If se...
2016-11-03, 3130👍, 0💬

OpenSSL Not Validate Signature in Self-Signed Certificate
Does OpenSSL "verify" command really validate the digital signature in a self-signed certificate? No, OpenSSL "verify" command does not validate the digital signature in a self-signed certificate. In the following test, a CSR with an RSA public key was "self-signed" by the OpenSSL "req -x509" comman...
2016-11-03, 1293👍, 0💬

OpenSSL "req" - distinguished_name Configuration Section
What is the distinguished_name section in the OpenSSL configuration file? The distinguished_name section in the OpenSSL configuration file is a required section of options when using OpenSSL "req -new" or "req -newkey" commands to generate a new CSR or self-signed certificate. distinguished_name sec...
2016-11-02, 8677👍, 0💬

OpenSSL "req" - "prompt=no" Mode
How to use the "prompt=no" mode of the OpenSSL "req -new" command? I want to specify DN field values directly in the configuration file. You can use "prompt=no" mode of the OpenSSL "req -new" command as shown below, if you set "prompt=no" and provide DN (Distinguished Name) field values in the confi...
2016-11-02, 3138👍, 0💬

OpenSSL "req" - "prompt=yes" Mode
How to use the "prompt=yes" mode of the OpenSSL "req -new" command? I want to enter DN values at the command prompt. You can use "prompt=yes" mode of the OpenSSL "req -new" command as shown below, if you set "prompt=yes" and provide DN (Distinguished Name) field prompts in the configuration file. C:...
2016-10-30, 1780👍, 0💬

OpenSSL "req" - "prompt=yes" Mode with DN Validations
How to specify DN value length limit validations when using the "prompt=yes" mode of the OpenSSL "req -new" command? If you are using "prompt=yes" mode, you can also set DN (Distinguished Name) value length limits in the configuration file. OpenSSL will perform value length validations for you. For ...
2016-10-30, 1377👍, 0💬

OpenSSL "req -new" - "no objects specified in config file" Error
Why am I getting the "no objects specified in config file" error when running the OpenSSL "req -new" command? If you are getting the "no objects specified in config file" error when running the OpenSSL "req -new" command, because OpenSSL receives no value for all DN (Distinguished Name) fields. Open...
2016-10-29, 10332👍, 0💬

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