Herong's Tutorial Examples: PKI

Free Chinese Calendar 2025 - Year of the Snake
Want to know when is the 2025 Chinese New Year day? Look for free Chinese calendars for 2025? Chinese New Year Date for Year 2025 The Snake 2025 January 29 Wednesday Chinese New Year ⇒ Free Chinese Calendar 2026 - Year of the Horse ⇐ Free Chinese Calendar 2024 - Year of the Dragon ⇑ Chinese New Y... 2025-01-12, ≈132🔥, 3💬

💬 2025-01-12 Al Sun: The yearly calendar is very clear and useful. Thank you. Would you have monthly calendars also, in simplified or traditional chi...

💬 2025-01-03 Herong: Hi Don, thanks for the suggestion. I will try to create a monthly calendar. Happy new year to everyone!

💬 2025-01-01 Don Tai: Thank you for sharing your time with the world. Your calendar is very nice. Maybe you could do a version with a single month on ...

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Certificate Wrapped in PKCS12 Formats
This section provides a quick introduction of the certificate PKCS12 file format, which wraps one or more certificates with/without associated key pairs under a single ASN.1 structure. 2024-12-14, ∼119🔥, 0💬

Certificate Wrapped in PKCS7 Formats
This section provides a quick introduction of the certificate PKCS7 file format, which wraps one or more certificates under a single ASN.1 structure. 2024-12-14, ∼107🔥, 0💬

Certificate File Format Summary
This section provides a summary of 5 commonly used file formats of PKI certificates: DER, PEM, PKCS7 Binary, PKCS7 Text, and PKCS12. 2024-12-14, ∼106🔥, 0💬

PKI Certificate Tutorials - Herong's Tutorial Examples
This tutorial book is a collection of notes and sample codes written by the author while he was learning PKI certificate related technologies. Topics include PKI architecture and CA (Certificate Authorities); PKI certificate types and DER/PEM file formats; Certificate tools: OpenSSL and 'keytool'; C... 2024-11-27, ∼128🔥, 0💬

Usage Examples of Public Key Infrastructure
This section provides some usage examples of PKI (Public Key Infrastructure), like HTTPS (Hypertext Transfer Protocol Secure) protocol, digital signature, encryption of documents, digital identification. 2024-11-27, ∼145🔥, 0💬

What Is ASN.1 (Abstract Syntax Notation One)
This section introduces ASN.1 (Abstract Syntax Notation One), which is a language that allows you to define your own constructed data types. 2024-11-27, ∼143🔥, 0💬

Add "keyUsage" into Root CA
This section provides a tutorial example on how to add 'keyUsage' and other X509v3 extensions to a self-signed root CA certificate. 2024-11-27, ∼137🔥, 0💬

"openssl.cnf" Example and Usages
This section describes OpenSSL CA database files, including the primary database file 'index.txt' and the serial number file 'serial'. 2024-11-27, ∼137🔥, 0💬

OIDs Used in PKI Certificate
This section introduces OIDs (Object IDentifiers) used in PKI certificates to represent attribute names and predefined reference values. 2024-11-27, ∼124🔥, 0💬

"openssl pkcs12 -export" - Certificate Chain and Key Bundle
This section provides a tutorial example on how to create a PKCS12 bundle to store an end certificate, its private/public key pair, and the signing certificate, using the 'openssl pkcs12 -export' command. 2024-11-27, ∼121🔥, 0💬

Certificate Data Fields and X.509 Standard
This section describes the structure and data fields of PKI certificates, which are specified in RFC 5280 based on the X.509 standard. 2024-11-27, ∼120🔥, 0💬

PKI Certificate File ASN.1 Parser
This section provides a quick introduction on ASN.1 parsers, which can be used to parse PKI certificates back to ASN.1 data structure. 2024-11-27, ∼117🔥, 0💬

Full Version in PDF/EPUB
Information on how to obtain the full version of this book in PDF, EPUB, or other format. 2024-11-27, ∼116🔥, 0💬

"openssl req -x509" - Generate Self-Signed Certificate
This section describes the 'openssl req -x509' command, which allows you to generate self-signed certificate from a CSR, an existing key pair, or an internally generated key pair. 2024-11-27, ∼115🔥, 0💬

"keytool -storetype pkcs12" - Limitations and Errors
This section provides tutorial examples showing limitations and errors of the 'keytool -storetype pkcs12' command. 2024-11-27, ∼114🔥, 0💬

What Is BER (Basic Encoding Rules)
This section introduces the BER (Basic Encoding Rules) defined in the ASN.1 standard. It uses the TLV (Tag-Length-Value) format to encode a value of a given data type. 2024-11-27, ∼113🔥, 0💬

What Is Java KeyStore File?
This section provides a quick introduction of 'keystore' - a database file used to store private keys and public key certificates. 'keystore' file can be managed by the KeyStore class or the 'keytool' command. 2024-11-27, ∼113🔥, 0💬

Most Popular Certificate Authorities
This section provides a list of most popular certificate authorities. 2024-11-27, ∼112🔥, 0💬

Introduction of PKI Certificate
This chapter provides a quick introduction of PKI certificate. Topics certificate structure and data fields; examples root CA, intermediate CA and end entity certificates; OID (Object IDentifiers) used in certificates. 2024-11-27, ∼111🔥, 0💬

ASN.1 Type Modifier - Type Tagging
This section provides a quick introduction of ASN.1 type modifiers. Specifying a type modifier is alao called type tagging, which allows you to define your type tags to resolve ambiguity issues in BER encoding. 2024-11-27, ∼111🔥, 0💬

PKCS12 Certificate Bundle File
This chapter provides a quick introduction of the PKCS12 certificate bundle file. Topics include introduction of PKCS12 file format; creating a PKCS12 bundle with 'openssl' and 'keytool'; converting PKCS12 bundle to PEM bundle. 2024-11-27, ∼111🔥, 0💬

What Is PKCS12 File Format
This section describes the PKCS12 File Format, which can be used to store multiple cryptography objects, including private/public keys and certificates, in a single file. 2024-11-27, ∼111🔥, 0💬

"keytool -export/import" - Export and Import Certificates
This section provides a tutorial example on how to use the 'keytool -export' command to export certificates out of a 'keystore' file. The 'keytool -import' command can be used to import certificates into a 'keystore' file. 2024-11-27, ∼111🔥, 0💬

"openssl pkcs12 -export" - Certificate and Key Bundle
This section provides a tutorial example on how to create a PKCS12 bundle to store a self-signed certificate and its private/public key pair using the 'openssl pkcs12 -export' command. 2024-11-27, ∼110🔥, 0💬

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