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"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, ∼151🔥, 0💬

"openssl crl2pkcs7 -nocrl" - PKCS7 Certificate File
This section provides a tutorial example on how to create a PKCS7 file with a single certificate using the 'openssl crl2pkcs7 -nocrl' command.
2024-11-27, ∼151🔥, 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, PEM, PKCS7, and PKCS12 file formats; PKI certificate decoders and ASN.1 parsers.
2024-11-27, ∼150🔥, 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, ∼150🔥, 0💬

"openssl genpkey" - Generate Private Key
This section describes the 'openssl genpkey' command, which generates a private/public key pair for a given algorithm.
2024-11-27, ∼146🔥, 0💬

"openssl pkcs12 -export" - Limitations and Errors
This section provides tutorial examples showing limitations and errors of the 'openssl pkcs12 -export' command.
2024-11-27, ∼146🔥, 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, ∼143🔥, 0💬

"openssl ca" - CA Signing Certificate
This section describes the 'openssl ca' command, which allows you to sign a CSR (Certificate Signing Request) into a certificate as a CA (Certificate Authority).
2024-11-27, ∼143🔥, 0💬

PKI Certificate Store
This chapter provides a quick introduction of PKI certificate stores, including Windows Windows Certificate Stores, macOS KeyChains, Linux Truststores, Java KeyStores, PEM Certificate Bundle Files and PKCS12 Certificate Bundle Files.
2024-11-27, ∼143🔥, 0💬

Java "keytool" Commands and KeyStore Files
This chapter provides tutorial notes and example codes on the Java 'keytool' command. Topics include introduction of KeyStore file and 'keytool' command; generating and managing keys and self-signed certificates; exporting and importing certificates; generating CSR (Certificate Signing Request); sig...
2024-11-27, ∼143🔥, 0💬

BER Encoding Examples
This section provides BER encoding examples of some simple ASN.1 structured values.
2024-11-27, ∼142🔥, 0💬

Root CA Certificate Example
This section provides a root CA certificate example and explanations of its data fileds.
2024-11-27, ∼141🔥, 0💬

PKI Certificate File Viewer and Decoder
This section describes two types of tools to see data fields encoded in PKI certificate files.
2024-11-27, ∼141🔥, 0💬

"openssl pkcs12 -export" - 3-Level Certificate Chain and Key Bundle
This section provides a tutorial example on how to create a PKCS12 bundle to store a certificate signing chain and key pair of the end certificate, using the 'openssl pkcs12 -export' command.
2024-11-27, ∼141🔥, 0💬

Usage Types of PKI Certificates
This section describes PKI certificate types categorized according to their usages.
2024-11-27, ∼140🔥, 0💬

PKI Certificate in DER Format
This section describes the DER (Distinguished Encoding Rules) file format to store PKI certificates.
2024-11-27, ∼140🔥, 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, ∼140🔥, 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, ∼139🔥, 0💬

"openssl ca" - CA (Certificate Authority) Tool
This chapter provides a quick introduction of the 'openssl ca' command, which can be used as CA (Certificate Authority) tool. Topics include OpenSSL configuration file, openssl.cnf; setting up root CA and intermediate CA environments; signing CSRs into certificates; adding x509v3 extensions in CSR a...
2024-11-27, ∼138🔥, 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, ∼138🔥, 0💬

"keytool -gencert -ext" - Sign CSR with X.509 Extensions
This section provides a tutorial example on how to use the 'keytool -gencert' command to sign a CSR with a self-signed root CA certificate and its private/public key pair.
2024-11-27, ∼138🔥, 0💬

What Is PKCS12 Certificate Bundle
This section describes what is PEM certificate bundle - a concatenation of multiple certificates in PEM format.
2024-11-27, ∼137🔥, 0💬

PKI Certificate Structure in ASN.1 Notations
This section presents the PKI certificate structure defined in ASN.1 notations.
2024-11-27, ∼136🔥, 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, ∼135🔥, 0💬

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