XmlCertVault Lua Reference Documentation

chilkat.XmlCertVault

Current Version: 11.7.0

Markdown version of this page for AI tools (v 11.7.0) · all AI docs

Chilkat.XmlCertVault

Collect certificates, certificate chains, PEM data, and PFX private keys in an XML vault.

Chilkat.XmlCertVault stores certificates and private-key material in a portable XML-based certificate vault. It can add individual certificates, certificate chains, DER or encoded certificates, PEM files, certificate strings, and PFX/PKCS12 data from files, memory, encoded text, or existing Chilkat objects. The vault can then be exported as XML, loaded from XML, or saved to an XML file for later reuse by other Chilkat certificate and TLS workflows.

Add certificates

Add certificates from Cert objects, files, PEM strings, binary DER bytes, or encoded data such as Base64 or hex.

Add certificate chains

Import an entire CertChain when related issuer and intermediate certificates should be kept together in the vault.

Add PEM content

Load PEM files containing one or more certificates and/or private keys, including encrypted PEM content when a password is supplied.

Add PFX / PKCS12

Add PFX data from a Pfx object, file, byte array, or encoded string, using the PFX password to import private-key material.

Master password protection

Use MasterPassword to protect access to private keys stored in the vault.

Load and save XML

Export the vault with GetXml, load it with LoadXml or LoadXmlFile, and persist it with SaveXml.

Common pattern: Create an XmlCertVault, set MasterPassword when the vault will contain private keys, add certificates or PFX/PEM material, then save the vault with SaveXml or keep the XML string from GetXml. Later, reload the same vault with LoadXml or LoadXmlFile and provide the same master password before using private keys.
Security note: Certificates are stored unencrypted, but private keys are stored using 256-bit AES encryption. The individual PFX passwords are also stored encrypted with the vault's MasterPassword, which is required to access any private keys contained in the XML vault.

Object Creation

local chilkat = require("chilkat")

local xml_cert_vault = chilkat.XmlCertVault.new()
local xml_cert_vault = chilkat.XmlCertVault.new()

Creates the object (chilkat.XmlCertVault() does the same). Lua's garbage collector frees it when it is no longer referenced; xml_cert_vault:dispose() frees it at once, and in Lua 5.4 and later local xml_cert_vault <close> = chilkat.XmlCertVault.new() frees it when the block ends. Calling a method of a disposed object raises an error.

Errors

A method that fails returns nil followed by the error text, as io.open does: local body, err = xml_cert_vault:method(...), where err is the object's last_error_text. Wrap the call in assert() to raise an error with that text instead. Methods that answer a question return true or false, numbers are returned as they are (check last_method_success where the description says a value means failure), and property reads and writes never fail for Chilkat reasons.

Misuse raises a Lua error: a wrong argument type or a missing argument (bad argument #1 to ...), an unknown property name, a write to a read-only property, an out-of-range integer, or an object of the wrong class.

Names are Chilkat's in snake_case: QuickGetStr is quick_get_str, LastErrorText is last_error_text. Properties are fields (xml_cert_vault.verbose_logging = true) and methods use the colon (xml_cert_vault:method(...)). Strings are UTF-8; binary data is a Lua string of bytes. Indexes are 0-based, as in every Chilkat API. Unlocking: call chilkat.unlock_bundle("...") once at startup.

Properties

DebugLogFilePath
-- strVal is a string
local strVal = xml_cert_vault.debug_log_file_path
xml_cert_vault.debug_log_file_path = strVal

If set to a file path, this property logs the LastErrorText of each Chilkat method or property call to the specified file. This logging helps identify the context and history of Chilkat calls leading up to any crash or hang, aiding in debugging.

Enabling the VerboseLogging property provides more detailed information. This property is mainly used for debugging rare instances where a Chilkat method call causes a hang or crash, which should generally not happen.

Possible causes of hangs include:

  • A timeout property set to 0, indicating an infinite timeout.
  • A hang occurring within an event callback in the application code.
  • An internal bug in the Chilkat code causing the hang.

More Information and Examples
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LastErrorHtml
-- strVal is a string (read-only)
local strVal = xml_cert_vault.last_error_html

Provides HTML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.

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LastErrorText
-- strVal is a string (read-only)
local strVal = xml_cert_vault.last_error_text

Provides plain text information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.

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LastErrorXml
-- strVal is a string (read-only)
local strVal = xml_cert_vault.last_error_xml

Provides XML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.

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LastMethodSuccess
-- boolVal is a boolean
local boolVal = xml_cert_vault.last_method_success
xml_cert_vault.last_method_success = boolVal

Indicates the success or failure of the most recent method call: true means success, false means failure. This property remains unchanged by property setters or getters. This method is present to address challenges in checking for null or Nothing returns in certain programming languages. Note: This property does not apply to methods that return integer values or to boolean-returning methods where the boolean does not indicate success or failure.

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MasterPassword
-- strVal is a string
local strVal = xml_cert_vault.master_password
xml_cert_vault.master_password = strVal
Introduced in version 9.5.0.40

The master password for the vault. Certificates are stored unencrypted, but private keys are stored 256-bit AES encrypted using the individual PFX passwords. The PFX passwords are stored 256-bit AES encrypted using the master password. The master password is required to acces any of the private keys stored within the XML vault.

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VerboseLogging
-- boolVal is a boolean
local boolVal = xml_cert_vault.verbose_logging
xml_cert_vault.verbose_logging = boolVal

If set to true, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is false. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.

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Version
-- strVal is a string (read-only)
local strVal = xml_cert_vault.version

Version of the component/library, such as "10.1.0"

More Information and Examples
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Methods

AddCert
-- cert is a chilkat.Cert
-- ok is true, or nil and err on failure
local ok, err = xml_cert_vault:add_cert(cert)
Introduced in version 9.5.0.40

Adds a certificate to the XML vault.

Returns true on success, nil, err on failure. The second return value, err, is the object's last_error_text; wrap the call in assert() to raise an error instead.

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AddCertChain
-- cert_chain is a chilkat.CertChain
-- ok is true, or nil and err on failure
local ok, err = xml_cert_vault:add_cert_chain(cert_chain)
Introduced in version 9.5.0.40

Adds a chain of certificates to the XML vault.

Returns true on success, nil, err on failure. The second return value, err, is the object's last_error_text; wrap the call in assert() to raise an error instead.

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AddCertEncoded
-- encoded_bytes is a string
-- encoding is a string
-- ok is true, or nil and err on failure
local ok, err = xml_cert_vault:add_cert_encoded(encoded_bytes, encoding)
Introduced in version 9.5.0.40

Adds a certificate to the XML vault where certificate is passed directly from encoded bytes (such as Base64, Hex, etc.). The encoding is indicated by encoding.

Returns true on success, nil, err on failure. The second return value, err, is the object's last_error_text; wrap the call in assert() to raise an error instead.

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AddCertFile
-- path is a string
-- ok is true, or nil and err on failure
local ok, err = xml_cert_vault:add_cert_file(path)
Introduced in version 9.5.0.40

Adds a certificate to the XML vault.

Returns true on success, nil, err on failure. The second return value, err, is the object's last_error_text; wrap the call in assert() to raise an error instead.

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AddCertString
-- cert_data is a string
-- ok is true, or nil and err on failure
local ok, err = xml_cert_vault:add_cert_string(cert_data)
Introduced in version 9.5.0.40

Adds a certificate from any string representation format such as PEM.

Returns true on success, nil, err on failure. The second return value, err, is the object's last_error_text; wrap the call in assert() to raise an error instead.

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AddPemFile
-- path is a string
-- password is a string
-- ok is true, or nil and err on failure
local ok, err = xml_cert_vault:add_pem_file(path, password)
Introduced in version 9.5.0.40

Adds the contents of a PEM file to the XML vault. The PEM file may be encrypted, and it may contain one or more certificates and/or private keys. The password is optional and only required if the PEM file contains encrypted content that requires a password.

Returns true on success, nil, err on failure. The second return value, err, is the object's last_error_text; wrap the call in assert() to raise an error instead.

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AddPfx
-- pfx is a chilkat.Pfx
-- ok is true, or nil and err on failure
local ok, err = xml_cert_vault:add_pfx(pfx)
Introduced in version 9.5.0.40

Adds a PFX (PKCS12) to the XML vault.

Returns true on success, nil, err on failure. The second return value, err, is the object's last_error_text; wrap the call in assert() to raise an error instead.

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AddPfxEncoded
-- encoded_bytes is a string
-- encoding is a string
-- password is a string
-- ok is true, or nil and err on failure
local ok, err = xml_cert_vault:add_pfx_encoded(encoded_bytes, encoding, password)

Adds a PFX to the XML vault where PFX is passed directly from encoded bytes (such as Base64, Hex, etc.). The encoding is indicated by encoding.

Returns true on success, nil, err on failure. The second return value, err, is the object's last_error_text; wrap the call in assert() to raise an error instead.

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AddPfxFile
-- path is a string
-- password is a string
-- ok is true, or nil and err on failure
local ok, err = xml_cert_vault:add_pfx_file(path, password)
Introduced in version 9.5.0.40

Adds a PFX file to the XML vault.

Returns true on success, nil, err on failure. The second return value, err, is the object's last_error_text; wrap the call in assert() to raise an error instead.

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GetXml
-- str is a string, or nil and err on failure
local str, err = xml_cert_vault:get_xml()
Introduced in version 9.5.0.40

Returns the contents of the cert vault as an XML string.

Returns the string, or nil, err on failure (or when nothing is found). The second return value, err, is the object's last_error_text; wrap the call in assert() to raise an error instead.

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LoadXml
-- xml is a string
-- ok is true, or nil and err on failure
local ok, err = xml_cert_vault:load_xml(xml)
Introduced in version 9.5.0.40

Loads from an XML string.

Returns true on success, nil, err on failure. The second return value, err, is the object's last_error_text; wrap the call in assert() to raise an error instead.

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LoadXmlFile
-- path is a string
-- ok is true, or nil and err on failure
local ok, err = xml_cert_vault:load_xml_file(path)
Introduced in version 9.5.0.40

Loads from an XML file.

Returns true on success, nil, err on failure. The second return value, err, is the object's last_error_text; wrap the call in assert() to raise an error instead.

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SaveXml
-- path is a string
-- ok is true, or nil and err on failure
local ok, err = xml_cert_vault:save_xml(path)
Introduced in version 9.5.0.40

Saves the contents to an XML file.

Returns true on success, nil, err on failure. The second return value, err, is the object's last_error_text; wrap the call in assert() to raise an error instead.

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