<< < 1 2 3 4 5 6 7 8 9 10 > >>   Sort: Date

OpenSSL "rsautl -encrypt" vs. "rsautl -verify"
What is the difference between "rsautl -encrypt" and "rsautl -verify" commands? There is only 1 difference between "rsautl -encrypt" and "rsautl -verify" commands: 1. "rsautl -encrypt" and "rsautl -verify" commands apply PKCS#1 v1.5 padding differently: "rsautl -encrypt" adds PKCS#1 v1.5 padding bef...
2017-03-11, 1939👍, 0💬

OpenSSL "dsaparam" Command Options
What can I use OpenSSL "dsaparam" command for? What are options supported by the "dsaparam" command? OpenSSL "dsaparam" command is a utility to generate DSA parameter files that are needed to generate DSA private key and public key pairs. Because generating DSA parameters is a slow job, DSA key gene...
2017-01-07, 1921👍, 0💬

OpenSSL "genpkey -pkeyopt rsa_keygen_pubexp:3" - RSA Public Exponent
How to generate a new RSA key pair with a different public exponent using OpenSSL "genpkey" command? If you need a new RSA key pair with a different public exponent for testing purpose, you can use the OpenSSL "genpkey -pkeyopt rsa_keygen_pubexp:nnn" command. The "-pkeyopt rsa_keygen_pubexp:nnn" opt...
2018-01-06, 1892👍, 0💬

OpenSSL "pkey" Command Options
What can I use OpenSSL "pkey" command for? What are options supported by the "pkey" command? OpenSSL "pkey" command is a utility to view and manage private keys and public keys. Note that "pkey" command is replacing the old "rsa", and "dsa" commands. Here are options supported by the "pkey" command:...
2018-01-16, 1868👍, 0💬

OpenSSL "req -new" - DN Fields for Personal Certificates
How to use additional DN fields to create CSR for personal certificates? You can set additional DN fields in the configuration file to allow OpenSSL "req -new" command to generate CSR for personal certificates. Additional DN fields are: emailAddress, name, surname, givenName, initials and dnQualifie...
2016-10-27, 1823👍, 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...
2018-01-19, 1800👍, 1💬

💬 2018-01-19 guest: req -new -newkey rsa: 1024 -nodes -keyout mykey.pe>m -out myreq.pem -config openssl-san.cnf

OpenSSL "ca -revoke" - Revoke a Certificate
How to revoke a certificate using the OpenSSL "ca" command? The certificate was signed by me with my CA certificate, but now it is no longer needed. If you want revoke a certificate that was signed by you previously, you can use the OpenSSL "ca -revoke" command to revoke it. Actually, the certificat...
2016-09-10, 1753👍, 0💬

OpenSSL "dsaparam" - Generate DSA Parameters
How to generate a new DSA parameter file using OpenSSL "dsaparam" command? If you need a new DSA paramter file in order to create new DSA keys, you can use the OpenSSL "dsaparam" command as shown below: C:\Users\fyicenter&gt;\loc al\openssl\openssl.exeOpenSSL&gt; dsaparam -out my_dsa_2048.pr...
2017-01-07, 1714👍, 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, 1697👍, 0💬

OpenSSL "gendsa" Command Options
What can I use OpenSSL "gendsa" command for? What are options supported by the "gendsa" command? OpenSSL "gendsa" command is a utility to generate DSA (Digital Signature Algorithm) private key and public key pairs. Here are options supported by the "gendsa" command: C:\Users\fyicenter&gt;\loc al\...
2017-01-07, 1687👍, 0💬

OpenSSL "genpkey" Command Options
What can I use OpenSSL "genpkey" command for? What are options supported by the "genpkey" command? OpenSSL "genpkey" command is a utility to generate of private key or parameters. Note that "genpkey" command is replacing the old "genrsa", 'gendsa", "gendh" and "dsaparam" commands. Here are options s...
2018-01-24, 1681👍, 0💬

OpenSSL "genrsa" - Generate RSA Key Pair
How to generate a new RSA key pair using OpenSSL "genrsa" command? If you need a new RSA key pair in order to create a new certificate, you can use the OpenSSL "genrsa" command as shown below: C:\Users\fyicenter&gt;\loc al\openssl\openssl.exeOpenSSL&gt; genrsa -out my_rsa.key Generating RSA ...
2017-02-24, 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, 1634👍, 0💬

OpenSSL "x509 -x509toreq" - Conver Certificate to CSR
How to convert a certificate to a CSR using OpenSSL "x509" command? I want to generate a CSR with the same information as my existing certificate. You can convert a certificate to a CSR using the OpenSSL "x509 -x509toreq" command as shown below: C:\Users\fyicenter&gt;\loc al\openssl\openssl.exeO...
2018-02-14, 1613👍, 0💬

OpenSSL "req new -batch" - Using DN Default Values Only
How to run OpenSSL "req -new" command in batch mode? I don't OpenSSL to use DN default values only and do not prompt me. If you have DN (Distinguished Name) default values provided in the configuration file, you can run OpenSSl "req -new -batch" command to take default values only without prompt as ...
2016-10-29, 1608👍, 0💬

General Information about OpenSSL
Where to find general information OpenSSL? I want to get basic understanding of OpenSSL. Here is a collection of tutorials that provides general information about OpenSSL compiled by FYIcenter.com team. What Is OpenSSL Download and Install OpenSSL Fulgan Binary for Windows Run OpenSSL Commands List ...
2018-01-19, 1595👍, 0💬

OpenSSL "genpkey -paramfile" - Generate EC Key
How to generate a new EC private key using OpenSSL "genpkey" command? If you need a new EC private key in order to create a new certificate, you can use the OpenSSL "genpkey" command as shown below: C:\Users\fyicenter&gt;\loc al\openssl\openssl.exeOpenSSL&gt; genpkey -paramfile my_ec.prm -ou...
2017-08-08, 1595👍, 0💬

OpenSSL "pkey" - Open Encrypted RSA Keys
How to open an encrypted RSA key file using OpenSSL "pkey" command? I was told the key file is DES encrypted and I know the password. If you are trying to open a password (encrypted) RSA key file using the "pkey" command, you will be prompted for the password as shown below: C:\Users\fyicenter&g...
2017-12-26, 1561👍, 0💬

OpenSSL "rsa" Command Options
What can I use OpenSSL "rsa" command for? What are options supported by the "rsa" command? OpenSSL "rsa" command is a utility to view RSA private keys and public keys. Here are options supported by the "rsa" command: C:\Users\fyicenter&gt;\loc al\openssl\openssl.exeOpenSSL&gt; rsa -help unkn...
2017-02-24, 1547👍, 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, 1529👍, 0💬

OpenSSL "genpkey -algorithm rsa" - Generate RSA Key
How to generate a new RSA private key using OpenSSL "genpkey" command? If you need a new RSA private key in order to create a new certificate, you can use the OpenSSL "genpkey" command as shown below: C:\Users\fyicenter&gt;\loc al\openssl\openssl.exeOpenSSL&gt; genpkey -algorithm rsa -out my...
2018-01-27, 1525👍, 0💬

OpenSSL "genpkey rsa_keygen_bits:10240" - RSA Long Keys
How to generate a new RSA key pair with a longer key size using OpenSSL "genpkey" command? If you need a new RSA key pair with a longer key size for testing purpose, you can use the OpenSSL "genpkey" command as shown below: C:\Users\fyicenter&gt;time The current time is: 18:43:27.27 C:\Users\fyi...
2018-01-13, 1518👍, 0💬

OpenSSL "rsautl" - PKCS#1 v1.5 Padding Size
Whet is the PKCS#1 v1.5 padding size with OpenSSL "rsautl -encrypt" command? I want to know the largest size of data that I can encrypt with my RSA key. The minimum padding size of PKCS#1 v1.5 padding schema is 11 bytes which contains at least 8 bytes of random string. So if you are using the "-pkcs...
2017-04-28, 1506👍, 0💬

OpenSSL "genpkey dh_paramgen_prime_len:3072" - DH Long Keys
How to generate a new DH key pair with a longer key size using OpenSSL "genpkey" command? If you need a new DH key pair with a longer key size for testing purpose, you can use the OpenSSL "genpkey" command as shown below: C:\Users\fyicenter&gt;time The current time is: 22:17:06.45 C:\Users\fyice...
2017-07-25, 1487👍, 0💬

<< < 1 2 3 4 5 6 7 8 9 10 > >>   Sort: Date