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OpenSSL "dsa -pubout" - Extract DSA Public Key
How to extract the public key from a DSA key file using OpenSSL "dsa" command? If you want to extract the public key out from a DSA key file (private key an public key), you can use the OpenSSL "dsa -pubout" command as shown below: C:\Users\fyicenter>\local\o penssl\openssl.exeOpenSSL> dsa -in...
2016-12-28, 303👍, 0💬

OpenSSL "dsa -pubin" - View DSA Public Key
How to view contents of a DSA public key file using OpenSSL "dsa" command? If you want to view contents of a DSA public key stored in a file, you can use the OpenSSL "dsa -pubin" command as shown below: C:\Users\fyicenter>\local\o penssl\openssl.exeOpenSSL> dsa -in my_dsa_2048_pub.key -pubin -...
2016-12-28, 270👍, 0💬

OpenSSL "gendsa 10240" - Generate DSA Long Keys
How to generate a new DSA key pair with a longer key size using OpenSSL "gendsa" command? If you need a new DSA key pair with a longer key size for testing purpose, you can use the OpenSSL "gendsa" command as shown below: C:\Users\fyicenter>time The current time is: 20:06:19.66 C:\Users\fyicenter...
2016-12-24, 265👍, 0💬

OpenSSL "dsaparam 512" - Generate DSA Short Keys
How to generate a new DSA key pair with a shorter key size using OpenSSL "gendsa" command? If you need a new DSA key pair with a shorter key size for testing purpose, you can use the OpenSSL "gendsa" command as shown below: C:\Users\fyicenter>\local\o penssl\openssl.exeOpenSSL> dsaparam -out m...
2016-12-24, 242👍, 0💬

OpenSSL "dsa" - Open Encrypted DSA Keys
How to open an encrypted DSA key file using OpenSSL "dsa" command? I was told the key file is DES encrypted and I know the password. If you are trying to open a password (encrypted) DSA key file using the "dsa" command, you will be prompted for the password as shown below: C:\Users\fyicenter>\loc...
2016-12-18, 296👍, 0💬

OpenSSL "gendsa -des" - DES Encrypt DSA Keys
How to generate a new DSA key pair and encrypt the output with a DES password using OpenSSL "gendsa" command? If you want to secure your new DSA private key with a DES encryption, you can use the OpenSSL "gendsa -des" command as shown below: C:\Users\fyicenter>\local\o penssl\opensslOpenSSL> g...
2016-12-18, 244👍, 0💬

OpenSSL "req" Command
Where to find tutorials on using OpenSSL "req" commands for certificate request and certificate generation? Here is a collection of tutorials on using OpenSSL "req" command compiled by FYIcenter.com team to generate Certificate Signing Request (CSR) and sign CSR. OpenSSL "req" Command Options OpenSS...
2016-12-15, 1093👍, 0💬

OpenSSL "dsa -aes*" - Re-Encrypt DSA Keys
How to re-encrypt a DSA key file using OpenSSL "dsa" command? I want to change the encryption password, and maybe change the encryption algorithm. If you want to encrypt an existing DSA key file again, you can use the "dsa -aes*" command as shown below: C:\Users\fyicenter>\local\o penssl\opensslO...
2016-12-15, 276👍, 0💬

OpenSSL "req" Command Options
What can I use OpenSSL "req" command for? What are options supported by the "req" command? OpenSSL "req" command is a certificate request and certificate generating utility. It can be used to generate Certificate Signing Request (CSR) and sign CSR. Here are options supported by the "req" command: C:...
2016-12-14, 720👍, 0💬

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, 460👍, 0💬

OpenSSL CSR File Structure and Components
What is the OpenSSL CSR file structure and components? By default, CSR (Certificate Signing Request) files generated by the OpenSSL "req" command follow these rules: 1. CSR files are stored in PEM (Privacy-enhanced mail) format, which uses DER (Distinguished Encoding Rules) standard to serialize dat...
2016-12-04, 368👍, 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>\local\o penssl\openssl.exeOpenSSL> req -in my_rsa.csr -text -noout Certificat...
2016-12-04, 286👍, 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>\local\o penssl\openssl.exeOpenSSL> req...
2016-11-23, 623👍, 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>\local\o penssl\openssl.ex...
2016-11-23, 292👍, 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, 5726👍, 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>\local\o penssl\openssl.exeOpenSSL> req -in my_rsa.csr ...
2016-11-20, 541👍, 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>\local\o penssl\openssl.exeOpenSSL> x509 -in ...
2016-11-20, 256👍, 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, 316👍, 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>\local\o penssl\openssl.exeOpenSSL> verify rsa_test.crt rsa_test.crt: C = us, ST = NY, L = New York, O =...
2016-11-15, 295👍, 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, 390👍, 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, 350👍, 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, 1674👍, 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, 341👍, 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>\local\o penssl\openssl.exeOpenSSL> req -...
2016-11-08, 321👍, 0💬

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