Android ASP Astrology Big5 Bitcoin Blowfish Built-in C# Calendar CD-DVD Cheminformatics Chinese Cryptography DES Email Encoding Ethereum Flash GB2312 General H Herong History HTML Java JavaScript JDBC JSP JVM Linux Molecule Movie Music MySQL Neural Network Perl PHP Physics PKI Publication Python REST SOAP Sorting Swing TV Series UML Unicode VBScript Web Web-Services Windows WSDL XML XMLPad XSD XSL-FO

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Email Messages with Attachments using MIME
This section provides an email message example with an attachment using the MIME (Multipurpose Internet Mail Extensions) protocol. The message is divided into multiple parts with each part using different content type. 2022-06-03, ∼2611🔥, 1💬

Installing Personal Certificate with Internet Options
This section provides a tutorial example on how to install my personal certificate with its private-public key pair from a PKCS12 file to Windows system using 'Internet Options'. 2022-10-01, ∼2519🔥, 0💬

Installing Trusted Root Certificate on Android phone
This section provides a tutorial example on how to install a trusted root certificate on Android phone from storage. 2022-10-01, ∼2486🔥, 0💬

Viewing Trusted Root CA Certificates in Google Chrome
This section provides a tutorial example on how to view trusted root CA certificates that are pre-installed in Google Chrome. 2022-10-01, ∼2383🔥, 0💬

LWP SSL verify_hostname Setting
This section provides a tutorial example on using the SSL verify_hostname setting and related settings: SSL_ca_path and SSL_ca_file. 2022-10-01, ∼2026🔥, 0💬

Converting KeyStore Files to PKCS12 Files
This section provides a tutorial example on how to convert a KeyStore file to a PKCS12 file, because Windows 'Internet Options' can import keys and certificates from PKCS12, but not from KeyStore file. 2016-02-07, ∼1981🔥, 2💬

💬 2016-02-07 Herong: Steve, Fully agree! I put it in command line, because it is easier to document. I will put a warning the tutorial.

💬 2016-02-07 Steve: Hi! No password in command line , please ! Can be read in history... Bad practice :(

View Trusted Root CA Certificates in Safari
This section provides a tutorial example on how to view trusted root CA certificates that are pre-installed in Apple Safari. 2022-10-01, ∼1933🔥, 0💬

Exporting Server Certificate to File in Google Chrome
This section provides a tutorial example on how to export an HTTPS server certificate to a certificate file in PEM (Privacy Enhanced Mail) format, also called Base-64 encoded X.509 format. 2022-10-01, ∼1792🔥, 0💬

Viewing Pre-Installed Certificates in Mozilla Firefox
This section provides a tutorial example on how to view pre-installed certificates in Mozilla Firefox. View certificate button is on the Encryption tab of the Advanced option page. 2026-07-20, ∼1677🔥, 4💬

💬 2026-06-20 Herong: Charles, thanks for sharing this information.

💬 2026-06-16 Charles: Not working for Firefox Andeoid 151!

💬 2022-01-09 Herong: Straton, Certificates in the Authorities section are trusted root certificates. Deleting them will create problems visiting Webs...

💬 2022-01-06 Straton: Looking for information on what the Authorities section tells me: why would I care? What is it useful for? Why would I delete ex...

Digital Signature Scheme for Email Messages
This section describes the digital signature scheme for email messages. The process of signing an email message is the same as signing other digital documents. 2016-09-08, ∼1573🔥, 1💬

💬 2016-09-08 shradha: nice one

Valid Certificate Required in Outlook
This section describes how to request digital signature and encryption when sending an outgoing email message in MS Office Outlook 2007. An invalid certificate error message shows up if you don't have any personal certificate that matches your email address and is issued from a trusted root CA. 2021-05-14, ∼1480🔥, 1💬

💬 2021-05-14 georgepaul: Office 365 Email signature generator - Sigsync Office 365 Email Signature software allows you to have full control over your org...

Exporting a Root CA Certificate to a File
This section provides a tutorial example on how to export a root CA certificate to a certificate file in base-64 encoded X.509 file using the certificates console on a Windows system. 2022-10-01, ∼1441🔥, 0💬

Deleting Root CA Certificates from Google Chrome
This section provides a tutorial example on how to delete a certificate from Google Chrome. Deleted certificate can be re-installed back from a certificate file. 2022-10-01, ∼1434🔥, 0💬

Listing of Trusted Root CA in macOS
This section provides a tutorial example on how to see the list of trusted root CA (PKI Certificate Authorities) pre-installed on macOS. 2022-10-01, ∼1434🔥, 0💬

Microsoft Management Console (MMC)
This section describes the Microsoft Management Console (MMC), which can be used to create a console to manage certificate stores on Windows systems. 2015-10-11, ∼1403🔥, 1💬

💬 2015-10-11 koloraza: mistratra betsaka fa tena tsra ny ataonao ry namamana

Multiple CA Certificates in a Single File
This section provides a tutorial example on how to store multiple root CA certificates in a single PEM file to be used by the OpenSSL module as the 'cafile' SSL context option. 2022-10-01, ∼1396🔥, 0💬

Delete/Untrust Certificates from macOS
This section provides a tutorial example on how to untrust (if delete is not possible) a certificate from macOS using Keychain Access. 2022-10-01, ∼1340🔥, 0💬

macOS Certificate Stores and Keychain Access
This chapter provides tutorial notes and example codes on macOS Certificate Stores and Keychain Access. Topics include introduction of Keychain Access; listing trusted root CA certificates; exporting certificates from or importing them to Keychain Access; detrusting or deleting certificates; creatin... 2022-10-01, ∼1313🔥, 0💬

Unlock Keychain to Access Certificate on macOS
This section provides a tutorial example on how to unlock locked keychain in Keychain Access. You need to lock and unlock 'login' keychain resolve 'the user name or passphrase you entered is not correct' error. 2022-10-01, ∼1286🔥, 0💬

Listing of Trusted Root CA in Mozilla Firefox
This section provides a tutorial example on how to see the list of trusted root CA (Certificate Authorities) pre-installed in Mozilla Firefox. 2021-11-17, ∼1278🔥, 1💬

💬 2021-11-17 离夏: Mozilla浏览器Mozilla Firefox访问

Viewing Certificate Properties and Purposes
This section provides a tutorial example on how to view certificate properties and purposes using the certificates console on a Windows system. 2022-10-01, ∼1217🔥, 0💬

What Is HTTPS (Hypertext Transfer Protocol Secure)?
This section describes what is HTTPS (Hypertext Transfer Protocol Secure) - A communication protocol that uses the HTTP and the SSL/TLS protocols to provide encrypted communication and secure identification of a Web server. 2019-04-13, ∼1211🔥, 2💬

💬 2019-04-13 Herong: Maybe some other website did it, not my site. ☺

💬 2019-04-10 arlyneysiak@gmail.com: Your site erased my entire history. I'd like to get my history information back. Can you tell me how to do this. I would greatly...

View Digital Signatures in Word Documents
This section provides a tutorial example on how to view digital signatures in MS Word 2007 documents. Clicking the digital signature icon in the status bar turns on and off the Signatures panel when editing Word documents. 2015-11-30, ∼1208🔥, 1💬

Viewing Server Certificate Chain in Google Chrome
This section provides a tutorial example on how to view server certificate chain when visiting a 'https' Website in Google Chrome. The top certificate in a certificate chain is the root CA certificate, which is trusted by browser settings. 2022-10-01, ∼1204🔥, 0💬

< 1 2 3 4 5 6 7 … > >>   ∑:315  Sort:Date

Android ASP Astrology Big5 Bitcoin Blowfish Built-in C# Calendar CD-DVD Cheminformatics Chinese Cryptography DES Email Encoding Ethereum Flash GB2312 General H Herong History HTML Java JavaScript JDBC JSP JVM Linux Molecule Movie Music MySQL Neural Network Perl PHP Physics PKI Publication Python REST SOAP Sorting Swing TV Series UML Unicode VBScript Web Web-Services Windows WSDL XML XMLPad XSD XSL-FO