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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, 9036👍, 0💬

What Is JKS (Java KeyStore) File
What is a JKS (Java KeyStore) file? I heard that it used to provide CA certificates to Java applications. A Java Keystore file is a specially formatted file used to store cryptographic keys and certificates. A Java KeyStore file can be used to store 3 types of entries: 1. PrivateKeyEntry - This type... 2012-07-24, 5859👍, 0💬

OpenSSL Verify Operation Steps
How does the OpenSSL verify operation work? What are the steps used by OpenSSL to verify a certificate? The OpenSSL verify operation uses the same functions as the internal SSL and S/MIME verification, therefore this description applies to these verify operations too. There is one crucial difference... 2012-07-24, 4836👍, 0💬

Example of X.509 Certificate Data Structure
Can you show me an example of X.509 certificate data structure? Here is an example of X.509 Version 3 certificate data structure: Certificate: Data: Version: 3 (0x2) Serial Number: 1 (0x1) Signature Algorithm: md5WithRSAEncryption Issuer: C=ZA, ST=Western Cape, L=Cape Town, O=Thawte Consulting cc, O... 2012-07-24, 4715👍, 0💬

What Is the Structure of Certificates
What is the structure of certificates? What types of values are recorded in a certificate? The structure of an X.509 Version 3 certificate is defined in RFC 5280 - "Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile". It contains the following values: ... 2012-07-24, 4229👍, 0💬

OpenSSL "s_client -connect" - Connect to HTTPS Web Site
How to connect to a HTTPS Web site using OpenSSL? I see the Web sites using the "https:\" format. If you see a Web sites using the "https:\" format, for example https://twitter.com/login/, you can try to connect the Web site using the "x509 -connect" command as shown below: C:\Users\fyicenter&gt... 2012-07-24, 16309👍, 0💬

OpenSSL "s_client -connect" - Show Server Certificate Chain
How to show all certificates in the server certificate chain using the OpenSSL "s_client -connect" command? I know the server uses multiple intermediate CA certificates. You can get all certificates in the server certificate chain if use "s_client -connect" with the "-showcerts" option as shown belo... 2012-07-24, 14179👍, 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, 8953👍, 0💬

OpenSSL "verify" Command Options
What can I use OpenSSL "verify" command for? What are options supported by the "verify" command? OpenSSL "verify" command is a utility to verify certificates. Here are options supported by the "verify" command: C:\Users\fyicenter&gt;\loc al\openssl\openssl.exeOpenSSL&gt; verify -h usage: ver... 2012-07-24, 6710👍, 0💬

Go Daddy Secure Certification Authority Certificate - FDAC6132936C45D6E2EE855F9ABAE7769968CCE7
Certificate Summary: Subject: Go Daddy Secure Certification Authority Issuer: Go Daddy Class 2 Certification Authority Expiration: 2026-11-16 01:54:37 UTC Key Identifier: FD:AC:61:32:93:6C:45:D6:E2:EE: 85:5F:9A:BA:E7:76:99:68:CC:E7Received at FYIcenter.com on: 2016-10-29 Go Daddy Secure Certificatio... 2012-07-23, 15600👍, 0💬

Yandex Passport Certificate - 74D389BE8FA210A1EF92BF8759FB1B3C774A202A
Certificate Summary: Subject: Yandex Passport Issuer: YandexExternalCA Expiration: 2014-01-17 15:15:46 UTC Key Identifier: 74:D3:89:BE:8F:A2:10:A1:EF:92: BF:87:59:FB:1B:3C:77:4A:20:2AReceived at FYIcenter.com on: 2016-10-29 Yandex Passport Certificate - 74D389BE8FA210A1EF92BF8759FB1B 3C774A202ACerti... 2012-07-23, 11125👍, 0💬

DigiCert High Assurance CA-3, www.digicert.com, DigiCert Inc, US
Certificate summary - Owner: DigiCert High Assurance CA-3, www.digicert.com, DigiCert Inc, US Issuer: DigiCert High Assurance EV Root CA, www.digicert.com, DigiCert Inc, US Expiration: Sat Apr 02 20:00:00 EDT 2022 MD5: C6:8B:99:30:C8:57:8D:41:6F:8C: 09:4E:6A:DB:0C:90Hash: Owner Hash=1445ed77, Issuer... 2012-07-23, 6070👍, 0💬

YandexExternalCA, Dld, Dyandex, Dru
Certificate summary - Owner: YandexExternalCA, Dld, Dyandex, Dru Issuer: GTE CyberTrust Global Root, "GTE CyberTrust Solutions, Inc.", GTE Corporation, US Expiration: Fri Jan 17 10:15:46 EST 2014 MD5: 9C:D4:8D:93:33:2D:1B:5D:0F:7B: 35:4C:1F:FC:78:C8Hash: Owner Hash=98ae5019, Issuer Hash=4d654d1d Inf... 2012-07-23, 5782👍, 0💬

reg.163.com, Terms of use at www.verisign.com/rpa (c)05, Tech...
Certificate summary - Owner: reg.163.com, Terms of use at www.verisign.com/rpa (c)05, Technical General Support, "Netease.com,Inc", L=Beijing, ST=Beijing, CN Issuer: VeriSign Class 3 International Server CA - G3, Terms of use at https://www.verisign.com/rpa (c)10, VeriSign Trust Network, "VeriSign, ... 2012-07-23, 5262👍, 0💬

*.wikipedia.org Certificate - BF0124B7AA2807A40665ACC34006FED658C31343
Certificate Summary: Subject: *.wikipedia.org Issuer: DigiCert High Assurance CA-3 Expiration: 2012-12-12 12:00:00 UTC Key Identifier: BF:01:24:B7:AA:28:07:A4:06:65: AC:C3:40:06:FE:D6:58:C3:13:43Received at FYIcenter.com on: 2019-01-15 *.wikipedia.org Certificate - BF0124B7AA2807A40665ACC34006FE D658... 2012-07-23, 4453👍, 0💬

OpenSSL "x509 -text" - Print Certificate Info
How to print out text information from a certificate using OpenSSL "x509" command? I want to see the subject and issuer of the certificate. Assuming you have a certificate file located at: C:\Users\fyicenter\twitter.crt ,you can print out certificate information in text format using the "x509 -text"... 2012-07-23, 20137👍, 0💬

OpenSSL "x509 -fingerprint" - Print Certificate Fingerprint
How to print out MD5 and SHA-1 fingerprints of a certificate using OpenSSL "x509" command? I need to see them and validate them with the owner of the certificate. Assuming you have a certificate file located at: C:\Users\fyicenter\twitter.crt ,you can print out certificate fingerprints using the "x5... 2012-07-23, 19030👍, 0💬

Start OpenSSL from Working Directory
How to start OpenSSL from my working directory where I have certificates stored. You can start OpenSSL from a command line window as shown in the tutorial: 1. Open a command line window. 2. Use the "cd" command to go to your working directory. 3. Run the OpenSSL program with the full path name as sh... 2012-07-23, 17436👍, 0💬

OpenSSL "s_client" Command Options
What can I use OpenSSL "s_client" command for? What are options supported by the "s_client" command? OpenSSL "s_client" command implements a generic SSL/TLS client which can establish a transparent connection to a remote server speaking SSL/TLS. It's intended for testing purposes only and provides o... 2012-07-23, 16136👍, 0💬

Install OpenSSL 0.9.8h on Windows
How to install OpenSSL on Windows? I have downloaded the "openssl-0.9.8h-1-setup.exe" on the desktop. If you have "openssl-0.9.8h-1-setup.exe" available, you can install OpenSSL 0.9.8h on Windows using these steps: 1. Double-click on "openssl-0.9.8h-1-setup.exe" to start the installation wizard. 2. ... 2012-07-23, 12150👍, 0💬

Sample X.509 Certificate File to Test OpenSSL
How can I get a X.509 certificate file to play with OpenSSL commands "x509" command? If you have no other easy way to get a sample X.509 certificate file, you can create one yourself using these steps: 1. Open "Notepad" with a black text file. 2. Copy and paste the following data into the "Notepad" ... 2012-07-23, 11312👍, 0💬

OpenSSL Command to List All Commands
How to list all commands in OpenSSL? I don't remember exactly what is the command to generate a CSR. Interestingly, there is no OpenSSL command to list all commands supported in OpenSSL. And there is no "help" command. However, if you enter "help" as a command, OpenSSL will return you an error messa... 2012-07-23, 11011👍, 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, 8458👍, 0💬

OpenSSL Command Option to List All Options
How to list all options that are supported by a specific OpenSSL command? I know the command but I don't remember the options for that command. Interestingly, there is no "-h" option to show all options supported by a specific OpenSSL command. However, if you enter "-h" as an option following a comm... 2012-07-23, 7323👍, 0💬

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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