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OpenSSL "genrsa" and "rsa" Commands
Where to find tutorials on using OpenSSL "genrsa" and "rsa" commands? Here is a collection of tutorials on using OpenSSL "genrsa" and "rsa" commands compiled by FYIcenter.com team. Note that "genrsa" and "rsa" commands are superseded by "genpkey" and "pKey" commands now. Stop using "genrsa" and "rsa... 2017-02-28, ≈13🔥, 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, ≈13🔥, 0💬

OpenSSL "verify -CAfile" - Specify Root CA Certificate
How to specify the root CA certificates that close the signing chain for the server certificate for OpenSSl "verify" command? I have downloaded the root CA certificate in a file. If you have the root CA certificate downloaded in a file, you can provide it to the OpenSSL "verify" command using the "-... 2012-07-24, ≈13🔥, 0💬

OpenSSL "rsautl -verify" - RSA Signature Verification
What is the purpose of the OpenSSL "rsautl -verify" command? Can I use it to verify a signed document? Yes, you can use OpenSSL "rsautl -verify" command to verify a signed document. But you need other OpenSSL commands to generate a digest from the document first. For example, you received 3 files as... 2017-03-25, ≈12🔥, 0💬

Download Root CA Certificate
How to download the certificate from a root CA? I need to the root CA certificate to close the certification validation chain. If you know the CN (Common Name) of the root CA, for example "DigiCert High Assurance EV Root CA", you can search and download it our certificate database at certificate.fyi... 2012-07-24, ≈12🔥, 0💬

OpenSSL "req -new" - CSR Attributes
How to add attributes in new CSR using OpenSSL "req -new" command? I was asked to create a CSR with a challenge password an attribute. In order to add attributes to new CSR created by the OpenSSL "req -new" command, first you need to write attribute options in a named section in the configuration fi... 2016-09-23, ≈12🔥, 0💬

OpenSSL "ca" Error "lookup failed for ca::default_md"
Why I am getting the "variable lookup failed for ca::default_md" error when running OpenSSL "ca" command? You are getting the "variable lookup failed for ca::default_md" error, because OpenSSL "ca" command can not find the required "default_md" option in the configuration file. For example, if you h... 2016-09-08, ≈12🔥, 0💬

OpenSSL "ca" Error "lookup failed for ca::policy"
Why I am getting the "variable lookup failed for ca::policy" error when running OpenSSL "ca" command? You are getting the "variable lookup failed for ca::policy" error, because OpenSSL "ca" command can not find the required "policy" option in the configuration file. For example, if you have the foll... 2016-09-08, ≈12🔥, 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:... 2023-04-05, ≈12🔥, 1💬

💬 2023-04-05 Hermine242: openssl req-x509 -nodes -days 365 -newkey rsa:2048 -keyout /etc/apache2/ssl/apache.key -out /etc/apache2/ssl/apache.crt

OpenSSL "ans1parse" - RSA Public Key in ASN.1 Structure
How to view the ASN.1 structure of an RSA public key using the OpenSSL "asn1parse" command? You can use the OpenSSL "asn1parse" command to view the ASN.1 structure of an RSA public key as shown in the test below: C:\Users\fyicenter&gt;\loc al\openssl\opensslpkey -in rsa_pri.key -pubout -out rsa_... 2016-09-27, ≈12🔥, 0💬

OpenSSL "rsa -pubout" - Extract RSA Public Key
How to extract the public key from an RSA key file using OpenSSL "rsa" command? If you want to extract the public key out from an RSA key file (private key an public key), you can use the OpenSSL "rsa -pubout" command as shown below: C:\Users\fyicenter&gt;\loc al\openssl\openssl.exeOpenSSL&g... 2017-02-03, ≈12🔥, 0💬

OpenSSL "s_client -connect" - View Server Certificate
How to view the server certificate using the OpenSSL "s_client -connect" command? You can get the server certificate, if use "s_client -connect" without the "-quiet" option as shown below: C:\Users\fyicenter&gt;\loc al\openssl\openssl.exeOpenSSL&gt; s_client -connect www.twitter.com:443 CONN... 2012-07-24, ≈11🔥, 0💬

OpenSSL "genrsa 32" - Generate RSA Short Keys
How to generate a new RSA key pair with a shorter key size using OpenSSL "genrsa" command? If you need a new RSA key pair with a shorter key size for testing purpose, you can use the OpenSSL "genrsa" command as shown below: C:\Users\fyicenter&gt;\loc al\openssl\openssl.exeOpenSSL&gt; genrsa ... 2023-09-21, ≈11🔥, 3💬

💬 2023-09-21 fredy: Good

💬 2020-10-17 FYIcenter.com: @vena, the answer is yes as shown in this tutorial.

💬 2020-10-16 vena: can we already generate 32 bits key with openssl ?

OpenSSL "rsautl" Using PKCS#1 v1.5 Padding
What is the PKCS#1 v1.5 padding schema used in OpenSSL "rsautl" command? PKCS#1 v1.5 padding schema is a padding standard specified in RFC2313 "PKCS #1: RSA Encryption, Version 1.5" proposed by RSA Laboratories in 1998. PKCS#1 v1.5 padding schema is designed to pad input data to a full encryption bl... 2023-09-07, ≈11🔥, 1💬

OpenSSL "verify" - Verify or Validate Certificate
How to verify or validate a certificate using OpenSSL "verify" command? I got a certificate from the Web site server and want to see if it is valid. If you have a certificate stored in a file, you can try to validate it or verify it with the OpenSSL "verify" command as shown below: C:\Users\fyicente... 2012-07-24, ≈11🔥, 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, ≈11🔥, 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&... 2023-05-26, ≈11🔥, 1💬

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

OpenSSL "rsautl -encrypt -raw" - No Padding
Can I use OpenSSL "rsautl" command to encrypt data without any padding? Yes, you can encrypt data without any padding using the OpenSSL "rsautl -encrypt -raw" command. But you need to remember the following: No padding requires the input data to be the same size as the RSA key. No padding requires t... 2017-04-28, ≈10🔥, 0💬

Download OpenSSL 0.9.8h for Windows
How to download OpenSSL for Windows? I heard that OpenSSL is nice free tool to manage keys and certificates. You can download OpenSSL Windows version using these steps: 1. Go to the OpenSSL for Windows Web site. 2. Go to the line: "Complete package, except sources - Setup - 4658384 - 4 December 2008... 2016-09-04, ≈10🔥, 0💬

OpenSSL "ca" Error "lookup failed for ca::serial"
Why I am getting the "variable lookup failed for ca::serial" error when running OpenSSL "ca" command? You are getting the "variable lookup failed for ca::serial" error, because OpenSSL "ca" command can not find the required "serial" option in the configuration file. For example, if you have the foll... 2016-09-08, ≈10🔥, 0💬

List of Commands Supported in OpenSSL
What commands are supported in OpenSSL? Here is a complete list of commands supported in OpenSSL: STANDARD COMMANDS asn1parse - Parse an ASN.1 sequence. ca - Certificate Authority (CA) Management. ciphers - Cipher Suite Description Determination. cms - CMS (Cryptographic Message Syntax) utility crl ... 2012-07-23, ≈10🔥, 0💬

ASN.1 File Structure Supported by OpenSSL
What is the ASN.1 (or ASN1) file structure supported by OpenSSL? ASN.1 (Abstract Syntax Notation One) is a standard and notation that describes rules and structures for representing, encoding, transmitting, and decoding data in telecommunications and computer networking. ASN.1 defines how data of mu... 2016-10-17, ≈10🔥, 0💬

OpenSSL "ans1parse -genconf" - Nested SEQUENCE ASN.1 Structure
How to how generate a DER with a nested SEQUENCE ASN.1 structure using the OpenSSL "ans1parse" command? You can define a nested SEQUENCE ASN.1 structure in an OpenSSL configuration file and use the "ans1parse -genconf" command to generate a DER with the structure as shown in the test below: C:\Users... 2016-10-15, ≈10🔥, 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, ≈10🔥, 0💬

<< < 1 2 3 4 5 6 7 8 … > >>   ∑:237  Sort:Date

Android Apple Mac DH Keys DSA Keys EC Keys Firefox General Google Chrome IE (Internet Explorer) Intermediate CA Java VM JDK Keytool Microsoft CertUtil Microsoft Edge Mozilla CertUtil OpenSSL Other Portecle Publishers Revoked Certificates Root CA RSA Keys Tools Tutorial What Is Windows