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Security & identity · #openssl
I need to confirm that the version of libssl3 installed on my Debian Bullseye system provides the OpenSSL 3.0.2 features required by a specific application, particularly TLS 1.3 support. The application documentation states that it will fail to negotiate TLS 1.3 if the library is older than OpenSSL 3.0.2, but I am unsure how to check the exact libssl3 versio
Ensure that HTTPS requests made with Ruby's Net::HTTP succeed in production environments where the system may lack a trusted CA certificate bundle. Locally, the default OpenSSL store is usually present, so requests complete without error. In minimal containers or hardened servers, the bundle can be absent, leading to OpenSSL::SSL::SSLError: certificate verif
OpenSSL 3.0 introduced providers as the primary mechanism for loading cryptographic algorithms while retaining the legacy ENGINE API for backward compatibility. The ENGINE interface is marked deprecated, with future releases possibly removing it entirely. Existing hardware acceleration modules written as ENGINEs must be evaluated for migration to the provide
When generating a Certificate Signing Request (CSR) using the openssl req command, standard subject fields are handled via interactive prompts or a basic configuration file. However, modern browser requirements necessitate the inclusion of Subject Alternative Names (SANs) to ensure certificate validity across multiple DNS entries or IP addresses. The goal is
Goal: achieve identical certificate verification results in development and production environments when relying on OpenSSL's default trust store. Constraint: the library's default certificate directory is set at compile time and may differ between machines; if the environment variables SSL_CERT_FILE or SSL_CERT_DIR are defined only in a developer's shell, p
Goal Ensure that OpenSSL’s ASN.1 TIME parsing consistently translates timezone offsets into a predictable representation for applications that convert the returned time to local civil time. Constraints and uncertainty OpenSSL currently returns the time as a time_t value interpreted as UTC, discarding any timezone offset present in the ASN.1 TIME field. Some
Certificate Revocation List (CRL) Validation OpenSSL provides the -crl_checks flag within the X509 verification store to ensure that certificates are checked against revocation lists during the chain validation process. A primary constraint is that OpenSSL does not natively perform network requests to fetch CRLs from Distribution Points (CDPs) defined in the
The goal is to enforce least‑privilege authentication by ensuring that a TLS server rejects connections when the client presents an expired certificate, even when SSL_VERIFY_PEER is set. OpenSSL completes the handshake and stores the error X509_V_ERR_CERT_HAS_EXPIRED in the verification result, but it does not automatically abort the connection. The applicat
PHP utilizes the OpenSSL extension to validate certificates during TLS handshakes for HTTPS requests. When the underlying library cannot locate a trusted root CA bundle, the system triggers a validation failure. The php.ini configuration provides openssl.cafile and openssl.capath to define these trust stores. However, there is often a discrepancy between the
debian