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GB2312 Tutorials - Herong's Tutorial Examples
This free book contains Herong's notes and tutorial examples on Chinese GB2312 character set. It provides a mapping table of all GB2312 characters, native codes, corresponding Unicode codes and UTF8 codes. The Java program source code that produces the mapping table is also included. Topics include ...
2024-12-01, ≈30🔥, 15💬

💬 2024-12-01 a: ABD2E6A0D6C1C1E8

💬 2024-09-20 tser: help me a lot

💬 2022-04-17 the niga: thank

💬 2021-02-17 林黛玉: 红楼梦

💬 2020-07-29 : 张

(More comments ...)

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. Updated in 2024 (Version v1.10) with minor ...
2024-11-27, ∼106🔥, 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, ∼108🔥, 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, ∼108🔥, 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, ∼108🔥, 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, ∼108🔥, 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, ∼107🔥, 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, ∼107🔥, 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, ∼106🔥, 0💬

Most Popular Certificate Authorities
This section provides a list of most popular certificate authorities.
2024-11-27, ∼105🔥, 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, ∼105🔥, 0💬

What Is PKI (Public Key Infrastructure)
This section describes what is PKI (Public Key Infrastructure) - an information technology infrastructure that enables Internet users to securely exchange information using the public and private key technology.
2024-11-27, ∼104🔥, 0💬

Usage Types of PKI Certificates
This section describes PKI certificate types categorized according to their usages.
2024-11-27, ∼104🔥, 0💬

What Is OpenSSL
This section describes what is OpenSSL - a cryptography toolkit implementing SSL/TLS protocols and related cryptography standards.
2024-11-27, ∼104🔥, 0💬

ASN.1 Data Structure of PKCS7 File
This section provides a tutorial example to show the ASN.1 data structure of a PKCS12 file.
2024-11-27, ∼104🔥, 0💬

Introduction of PKI (Public Key Infrastructure)
This chapter provides a quick introduction of PKI (Public Key Infrastructure). Topics include what is PKI; usage examples of PKI; most popular certificate authorities.
2024-11-27, ∼103🔥, 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, ∼103🔥, 0💬

What Is PKI Certificate
This section describes what is PKI certificate and what are basic data fields included in a PKI certificate.
2024-11-27, ∼103🔥, 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, ∼103🔥, 0💬

Intermedate CA Certificate Example
This section provides an intermediate CA certificate example and explanations of its data fileds.
2024-11-27, ∼103🔥, 0💬

End Entity Certificate Example
This section provides an end entity certificate example and explanations of its data fileds.
2024-11-27, ∼103🔥, 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, ∼103🔥, 0💬

PKI Certificate File Formats
This chapter provides a quick introduction of PKI certificate file formats. Topics include ASN.1 standard; BER and DER encodings; PKI certificates in DER or PEM file formats; PKI certificate decoders and ASN.1 parsers.
2024-11-27, ∼103🔥, 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, ∼103🔥, 0💬

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