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Installing Comodo Personal Certificate to Windows
This section provides a tutorial example on how to install Comodo personal certificate backed up from Firefox into Windows system with password protection.
2022-10-01, ∼297🔥, 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, ∼296🔥, 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, ∼295🔥, 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, ∼293🔥, 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, ∼291🔥, 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, ∼290🔥, 0💬

Viewing Comodo Personal Certificate in Firefox
This section provides a tutorial example on how to view detail information of a personal certificate issued by Comodo and installed in Firefox.
2022-10-01, ∼290🔥, 0💬

"Your connection is not private" with Chrome on iOS 10
This section provides a tutorial example on how to resolve the 'Your connection is not private' error with Chrome on iOS 10 iPhone.
2022-10-01, ∼290🔥, 0💬

What Is PKCS7 File Format
This section describes the PKCS7 File Format, which can be used to store multiple signed and/or encrypted data items, including certificates and CRL (Certificate Revocation List) in a single file.
2024-11-27, ∼289🔥, 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, ∼285🔥, 0💬

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, ∼283🔥, 0💬

Root CA Certificate Example
This section provides a root CA certificate example and explanations of its data fileds.
2024-11-27, ∼283🔥, 0💬

PKI Certificate Store
This chapter provides a quick introduction of PKI certificate stores, including Windows Windows Certificate Stores, macOS KeyChains, Linux Trust Stores, Java KeyStores, PEM Certificate Bundle Files and PKCS12 Certificate Bundle Files.
2024-11-27, ∼282🔥, 0💬

What Is Linux Trust Store
This section describes what is Linux Trust Store - a set of files in Linux computers to store root CA certificates with trust information.
2024-11-27, ∼280🔥, 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, ∼279🔥, 0💬

What Is DER (Distinguished Encoding Rules)
This section introduces the DER (Distinguished Encoding Rules) defined in the ASN.1 standard. It is a restricted version of BER (Basic Encoding Rules) to ensure unique encoding output.
2024-11-27, ∼274🔥, 0💬

BER Encoding Examples
This section provides BER encoding examples of some simple ASN.1 structured values.
2024-11-27, ∼273🔥, 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, ∼272🔥, 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, ∼271🔥, 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, ∼270🔥, 0💬

"openssl x509" - X.509 Certificate Command
This section describes the 'openssl x509' command, which invokes the OpenSSL CLI to access OpenSSL functions.
2024-11-27, ∼268🔥, 0💬

Keychain File Locations on macOS
This section provides a tutorial example on how to find Keychain file locations on macOS computers.
2022-10-08, ∼268🔥, 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, ∼267🔥, 0💬

PKI Certificate in DER Format
This section describes the DER (Distinguished Encoding Rules) file format to store PKI certificates.
2024-11-27, ∼266🔥, 0💬

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