# MLKEM Class

The MLKEM class can be used to establish a shared secret key through Module-Lattice-Based Key-Encapsulation Mechanism (ML-KEM) cryptography.

## Class Name

**IPWorksEncrypt_MLKEM**

## Procedural Interface

```text
 ipworksencrypt_mlkem_open();
 ipworksencrypt_mlkem_close($res);
 ipworksencrypt_mlkem_register_callback($res, $id, $function);
 ipworksencrypt_mlkem_get_last_error($res);
 ipworksencrypt_mlkem_get_last_error_code($res);
 ipworksencrypt_mlkem_set($res, $id, $index, $value);
 ipworksencrypt_mlkem_get($res, $id, $index);
 ipworksencrypt_mlkem_do_config($res, $configurationstring);
 ipworksencrypt_mlkem_do_createkey($res);
 ipworksencrypt_mlkem_do_decapsulate($res);
 ipworksencrypt_mlkem_do_encapsulate($res);
 ipworksencrypt_mlkem_do_reset($res);
```

## Remarks

The MLKEM component can be used to establish a shared secret key through Module-Lattice-Based Key-Encapsulation Mechanism (ML-KEM) cryptography. Includes support for ML-KEM-512, ML-KEM-768, and ML-KEM-1024 parameter sets.

Note that by default the component uses ML-KEM-512. You may specify the parameter set by setting [ParamSet](#ParamSet).

## Property List

*The following is the full list of the properties of the class with short descriptions. Click on the links for further details.*

|  |  |
| --- | --- |
| [CipherText](#ciphertext-property-ipworksencrypt_mlkem-class) | The cipher text. |
| [KeyPrivateKey](#keyprivatekey-property-ipworksencrypt_mlkem-class) | The raw ML-KEM private key. |
| [KeyPublicKey](#keypublickey-property-ipworksencrypt_mlkem-class) | The raw ML-KEM public key. |
| [SharedSecret](#sharedsecret-property-ipworksencrypt_mlkem-class) | The computed shared secret. |
| [UseHex](#usehex-property-ipworksencrypt_mlkem-class) | Whether binary values are hex encoded. |

## Method List

*The following is the full list of the methods of the class with short descriptions. Click on the links for further details.*

|  |  |
| --- | --- |
| [Config](#config-method-ipworksencrypt_mlkem-class) | Sets or retrieves a configuration setting. |
| [CreateKey](#createkey-method-ipworksencrypt_mlkem-class) | Creates a new key. |
| [Decapsulate](#decapsulate-method-ipworksencrypt_mlkem-class) | Decapsulates a shared secret. |
| [Encapsulate](#encapsulate-method-ipworksencrypt_mlkem-class) | Encapsulates a shared secret. |
| [Reset](#reset-method-ipworksencrypt_mlkem-class) | Resets the class. |

## Event List

*The following is the full list of the events fired by the class with short descriptions. Click on the links for further details.*

|  |  |
| --- | --- |
| [Error](#error-event-ipworksencrypt_mlkem-class) | Fired when information is available about errors during data delivery. |

## Config Settings

*The following is a list of config settings for the class with short descriptions. Click on the links for further details.*

|  |  |
| --- | --- |
| [ParamSet](#ParamSet) | The ML-KEM parameter set. |
| [BuildInfo](#BuildInfo) | Information about the product's build. |
| [CodePage](#CodePage) | The system code page used for Unicode to Multibyte translations. |
| [LicenseInfo](#LicenseInfo) | Information about the current license. |
| [MaskSensitiveData](#MaskSensitiveData) | Whether sensitive data is masked in log messages. |
| [ProcessIdleEvents](#ProcessIdleEvents) | Whether the class uses its internal event loop to process events when the main thread is idle. |
| [SelectWaitMillis](#SelectWaitMillis) | The length of time in milliseconds the class will wait when DoEvents is called if there are no events to process. |
| [UseFIPSCompliantAPI](#UseFIPSCompliantAPI) | Tells the class whether or not to use FIPS certified APIs. |
| [UseInternalSecurityAPI](#UseInternalSecurityAPI) | Whether or not to use the system security libraries or an internal implementation. |

# CipherText Property ([IPWorksEncrypt_MLKEM](#mlkem-class) Class)

The cipher text.

## Object Oriented Interface

```text
public function getCipherText();
public function setCipherText($value);
```

## Procedural Interface

```text
ipworksencrypt_mlkem_get($res, 1 );
ipworksencrypt_mlkem_set($res, 1, $value );
```

## Default Value

''

## Remarks

This property holds the ML-KEM ciphertext.

It is populated by [Encapsulate](#encapsulate-method-ipworksencrypt_mlkem-class) and must be set before calling [Decapsulate](#decapsulate-method-ipworksencrypt_mlkem-class).

## Data Type

Binary String

# KeyPrivateKey Property ([IPWorksEncrypt_MLKEM](#mlkem-class) Class)

The raw ML-KEM private key.

## Object Oriented Interface

```text
public function getKeyPrivateKey();
public function setKeyPrivateKey($value);
```

## Procedural Interface

```text
ipworksencrypt_mlkem_get($res, 2 );
ipworksencrypt_mlkem_set($res, 2, $value );
```

## Default Value

''

## Remarks

The raw ML-KEM private key.

## Data Type

Binary String

# KeyPublicKey Property ([IPWorksEncrypt_MLKEM](#mlkem-class) Class)

The raw ML-KEM public key.

## Object Oriented Interface

```text
public function getKeyPublicKey();
public function setKeyPublicKey($value);
```

## Procedural Interface

```text
ipworksencrypt_mlkem_get($res, 3 );
ipworksencrypt_mlkem_set($res, 3, $value );
```

## Default Value

''

## Remarks

The raw ML-KEM public key.

## Data Type

Binary String

# SharedSecret Property ([IPWorksEncrypt_MLKEM](#mlkem-class) Class)

The computed shared secret.

## Object Oriented Interface

```text
public function getSharedSecret();
```

## Procedural Interface

```text
ipworksencrypt_mlkem_get($res, 4 );
```

## Default Value

''

## Remarks

This property holds the shared secret computed by [Encapsulate](#encapsulate-method-ipworksencrypt_mlkem-class) or [Decapsulate](#decapsulate-method-ipworksencrypt_mlkem-class).

This property is read-only.

## Data Type

Binary String

# UseHex Property ([IPWorksEncrypt_MLKEM](#mlkem-class) Class)

Whether binary values are hex encoded.

## Object Oriented Interface

```text
public function getUseHex();
public function setUseHex($value);
```

## Procedural Interface

```text
ipworksencrypt_mlkem_get($res, 5 );
ipworksencrypt_mlkem_set($res, 5, $value );
```

## Default Value

false

## Remarks

This property specifies whether [CipherText](#ciphertext-property-ipworksencrypt_mlkem-class) and [SharedSecret](#sharedsecret-property-ipworksencrypt_mlkem-class) are hex encoded when [Encapsulate](#encapsulate-method-ipworksencrypt_mlkem-class) is called.

If set to *False* (default), values are provided as-is with no encoding.

When [Decapsulate](#decapsulate-method-ipworksencrypt_mlkem-class) is called and this property is set to *True*, [CipherText](#ciphertext-property-ipworksencrypt_mlkem-class) is treated as hex encoded and [SharedSecret](#sharedsecret-property-ipworksencrypt_mlkem-class) is hex encoded when populated.

## Data Type

Boolean

# Config Method ([IPWorksEncrypt_MLKEM](#mlkem-class) Class)

Sets or retrieves a configuration setting.

## Object Oriented Interface

```text
public function doConfig($configurationstring);
```

## Procedural Interface

```text
ipworksencrypt_mlkem_do_config($res, $configurationstring);
```

## Remarks

Config is a generic method available in every class. It is used to set and retrieve [configuration settings](#config-settings-mlkem-class) for the class.

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the class, access to these *internal properties* is provided through the Config method.

To set a configuration setting named *PROPERTY*, you must call *Config("PROPERTY=VALUE")*, where *VALUE* is the value of the setting expressed as a string. For boolean values, use the strings "True", "False", "0", "1", "Yes", or "No" (case does not matter).

To read (query) the value of a [configuration setting](#config-settings-mlkem-class), you must call *Config("PROPERTY")*. The value will be returned as a string.

# CreateKey Method ([IPWorksEncrypt_MLKEM](#mlkem-class) Class)

Creates a new key.

## Object Oriented Interface

```text
public function doCreateKey();
```

## Procedural Interface

```text
ipworksencrypt_mlkem_do_createkey($res);
```

## Remarks

CreateKey creates a new ML-KEM public and private key pair.

When this method is called, Key is populated with the generated raw public and private key values. The parameter set is controlled by the *ParamSet* configuration setting.

# Decapsulate Method ([IPWorksEncrypt_MLKEM](#mlkem-class) Class)

Decapsulates a shared secret.

## Object Oriented Interface

```text
public function doDecapsulate();
```

## Procedural Interface

```text
ipworksencrypt_mlkem_do_decapsulate($res);
```

## Remarks

This method uses the private key in Key and the ciphertext in [CipherText](#ciphertext-property-ipworksencrypt_mlkem-class) to recover the shared secret.

The shared secret is available from [SharedSecret](#sharedsecret-property-ipworksencrypt_mlkem-class).

# Encapsulate Method ([IPWorksEncrypt_MLKEM](#mlkem-class) Class)

Encapsulates a shared secret.

## Object Oriented Interface

```text
public function doEncapsulate();
```

## Procedural Interface

```text
ipworksencrypt_mlkem_do_encapsulate($res);
```

## Remarks

This method uses the public key in Key to generate a shared secret and ciphertext.

The generated shared secret is available from [SharedSecret](#sharedsecret-property-ipworksencrypt_mlkem-class), and the ciphertext is available from [CipherText](#ciphertext-property-ipworksencrypt_mlkem-class).

# Reset Method ([IPWorksEncrypt_MLKEM](#mlkem-class) Class)

Resets the class.

## Object Oriented Interface

```text
public function doReset();
```

## Procedural Interface

```text
ipworksencrypt_mlkem_do_reset($res);
```

## Remarks

When called, the class will reset all of its properties to their default values.

# Error Event ([IPWorksEncrypt_MLKEM](#mlkem-class) Class)

Fired when information is available about errors during data delivery.

## Object Oriented Interface

```text
public function fireError($param);
```

## Procedural Interface

```text
ipworksencrypt_mlkem_register_callback($res, 1, array($this, 'fireError'));
```

## Parameter List

```text
 'errorcode' 'description'
```

## Remarks

The Error event is fired in case of exceptional conditions during message processing. Normally the class fails with an error.

The *ErrorCode* parameter contains an error code, and the *Description* parameter contains a textual description of the error. For a list of valid error codes and their descriptions, please refer to the [Error Codes](#trappable-errors-mlkem-class) section.

# Config Settings ([MLKEM](#mlkem-class) Class)

 The class accepts one or more of the following *configuration settings*. Configuration settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the class, access to these *internal properties* is provided through the [Config](#config-method-ipworksencrypt_mlkem-class) method.

### MLKEM Config Settings

**ParamSet**: The ML-KEM parameter set.This setting specifies the ML-KEM parameter set to use when creating keys, encapsulating, and decapsulating. Possible values are:

- 512 (default)
- 768
- 1024

### Base Config Settings

**BuildInfo**: Information about the product's build.When queried, this setting will return a string containing information about the product's build.

**CodePage**: The system code page used for Unicode to Multibyte translations.The default code page is Unicode UTF-8 (65001).

The following is a list of valid code page identifiers:

|  |  |
| --- | --- |
| Identifier | Name |
| 037 | IBM EBCDIC - U.S./Canada |
| 437 | OEM - United States |
| 500 | IBM EBCDIC - International |
| 708 | Arabic - ASMO 708 |
| 709 | Arabic - ASMO 449+, BCON V4 |
| 710 | Arabic - Transparent Arabic |
| 720 | Arabic - Transparent ASMO |
| 737 | OEM - Greek (formerly 437G) |
| 775 | OEM - Baltic |
| 850 | OEM - Multilingual Latin I |
| 852 | OEM - Latin II |
| 855 | OEM - Cyrillic (primarily Russian) |
| 857 | OEM - Turkish |
| 858 | OEM - Multilingual Latin I + Euro symbol |
| 860 | OEM - Portuguese |
| 861 | OEM - Icelandic |
| 862 | OEM - Hebrew |
| 863 | OEM - Canadian-French |
| 864 | OEM - Arabic |
| 865 | OEM - Nordic |
| 866 | OEM - Russian |
| 869 | OEM - Modern Greek |
| 870 | IBM EBCDIC - Multilingual/ROECE (Latin-2) |
| 874 | ANSI/OEM - Thai (same as 28605, ISO 8859-15) |
| 875 | IBM EBCDIC - Modern Greek |
| 932 | ANSI/OEM - Japanese, Shift-JIS |
| 936 | ANSI/OEM - Simplified Chinese (PRC, Singapore) |
| 949 | ANSI/OEM - Korean (Unified Hangul Code) |
| 950 | ANSI/OEM - Traditional Chinese (Taiwan; Hong Kong SAR, PRC) |
| 1026 | IBM EBCDIC - Turkish (Latin-5) |
| 1047 | IBM EBCDIC - Latin 1/Open System |
| 1140 | IBM EBCDIC - U.S./Canada (037 + Euro symbol) |
| 1141 | IBM EBCDIC - Germany (20273 + Euro symbol) |
| 1142 | IBM EBCDIC - Denmark/Norway (20277 + Euro symbol) |
| 1143 | IBM EBCDIC - Finland/Sweden (20278 + Euro symbol) |
| 1144 | IBM EBCDIC - Italy (20280 + Euro symbol) |
| 1145 | IBM EBCDIC - Latin America/Spain (20284 + Euro symbol) |
| 1146 | IBM EBCDIC - United Kingdom (20285 + Euro symbol) |
| 1147 | IBM EBCDIC - France (20297 + Euro symbol) |
| 1148 | IBM EBCDIC - International (500 + Euro symbol) |
| 1149 | IBM EBCDIC - Icelandic (20871 + Euro symbol) |
| 1200 | Unicode UCS-2 Little-Endian (BMP of ISO 10646) |
| 1201 | Unicode UCS-2 Big-Endian |
| 1250 | ANSI - Central European |
| 1251 | ANSI - Cyrillic |
| 1252 | ANSI - Latin I |
| 1253 | ANSI - Greek |
| 1254 | ANSI - Turkish |
| 1255 | ANSI - Hebrew |
| 1256 | ANSI - Arabic |
| 1257 | ANSI - Baltic |
| 1258 | ANSI/OEM - Vietnamese |
| 1361 | Korean (Johab) |
| 10000 | MAC - Roman |
| 10001 | MAC - Japanese |
| 10002 | MAC - Traditional Chinese (Big5) |
| 10003 | MAC - Korean |
| 10004 | MAC - Arabic |
| 10005 | MAC - Hebrew |
| 10006 | MAC - Greek I |
| 10007 | MAC - Cyrillic |
| 10008 | MAC - Simplified Chinese (GB 2312) |
| 10010 | MAC - Romania |
| 10017 | MAC - Ukraine |
| 10021 | MAC - Thai |
| 10029 | MAC - Latin II |
| 10079 | MAC - Icelandic |
| 10081 | MAC - Turkish |
| 10082 | MAC - Croatia |
| 12000 | Unicode UCS-4 Little-Endian |
| 12001 | Unicode UCS-4 Big-Endian |
| 20000 | CNS - Taiwan |
| 20001 | TCA - Taiwan |
| 20002 | Eten - Taiwan |
| 20003 | IBM5550 - Taiwan |
| 20004 | TeleText - Taiwan |
| 20005 | Wang - Taiwan |
| 20105 | IA5 IRV International Alphabet No. 5 (7-bit) |
| 20106 | IA5 German (7-bit) |
| 20107 | IA5 Swedish (7-bit) |
| 20108 | IA5 Norwegian (7-bit) |
| 20127 | US-ASCII (7-bit) |
| 20261 | T.61 |
| 20269 | ISO 6937 Non-Spacing Accent |
| 20273 | IBM EBCDIC - Germany |
| 20277 | IBM EBCDIC - Denmark/Norway |
| 20278 | IBM EBCDIC - Finland/Sweden |
| 20280 | IBM EBCDIC - Italy |
| 20284 | IBM EBCDIC - Latin America/Spain |
| 20285 | IBM EBCDIC - United Kingdom |
| 20290 | IBM EBCDIC - Japanese Katakana Extended |
| 20297 | IBM EBCDIC - France |
| 20420 | IBM EBCDIC - Arabic |
| 20423 | IBM EBCDIC - Greek |
| 20424 | IBM EBCDIC - Hebrew |
| 20833 | IBM EBCDIC - Korean Extended |
| 20838 | IBM EBCDIC - Thai |
| 20866 | Russian - KOI8-R |
| 20871 | IBM EBCDIC - Icelandic |
| 20880 | IBM EBCDIC - Cyrillic (Russian) |
| 20905 | IBM EBCDIC - Turkish |
| 20924 | IBM EBCDIC - Latin-1/Open System (1047 + Euro symbol) |
| 20932 | JIS X 0208-1990 & 0121-1990 |
| 20936 | Simplified Chinese (GB2312) |
| 21025 | IBM EBCDIC - Cyrillic (Serbian, Bulgarian) |
| 21027 | Extended Alpha Lowercase |
| 21866 | Ukrainian (KOI8-U) |
| 28591 | ISO 8859-1 Latin I |
| 28592 | ISO 8859-2 Central Europe |
| 28593 | ISO 8859-3 Latin 3 |
| 28594 | ISO 8859-4 Baltic |
| 28595 | ISO 8859-5 Cyrillic |
| 28596 | ISO 8859-6 Arabic |
| 28597 | ISO 8859-7 Greek |
| 28598 | ISO 8859-8 Hebrew |
| 28599 | ISO 8859-9 Latin 5 |
| 28605 | ISO 8859-15 Latin 9 |
| 29001 | Europa 3 |
| 38598 | ISO 8859-8 Hebrew |
| 50220 | ISO 2022 Japanese with no halfwidth Katakana |
| 50221 | ISO 2022 Japanese with halfwidth Katakana |
| 50222 | ISO 2022 Japanese JIS X 0201-1989 |
| 50225 | ISO 2022 Korean |
| 50227 | ISO 2022 Simplified Chinese |
| 50229 | ISO 2022 Traditional Chinese |
| 50930 | Japanese (Katakana) Extended |
| 50931 | US/Canada and Japanese |
| 50933 | Korean Extended and Korean |
| 50935 | Simplified Chinese Extended and Simplified Chinese |
| 50936 | Simplified Chinese |
| 50937 | US/Canada and Traditional Chinese |
| 50939 | Japanese (Latin) Extended and Japanese |
| 51932 | EUC - Japanese |
| 51936 | EUC - Simplified Chinese |
| 51949 | EUC - Korean |
| 51950 | EUC - Traditional Chinese |
| 52936 | HZ-GB2312 Simplified Chinese |
| 54936 | Windows XP: GB18030 Simplified Chinese (4 Byte) |
| 57002 | ISCII Devanagari |
| 57003 | ISCII Bengali |
| 57004 | ISCII Tamil |
| 57005 | ISCII Telugu |
| 57006 | ISCII Assamese |
| 57007 | ISCII Oriya |
| 57008 | ISCII Kannada |
| 57009 | ISCII Malayalam |
| 57010 | ISCII Gujarati |
| 57011 | ISCII Punjabi |
| 65000 | Unicode UTF-7 |
| 65001 | Unicode UTF-8 |

 The following is a list of valid code page identifiers for Mac OS only:

|  |  |
| --- | --- |
| Identifier | Name |
| 1 | ASCII |
| 2 | NEXTSTEP |
| 3 | JapaneseEUC |
| 4 | UTF8 |
| 5 | ISOLatin1 |
| 6 | Symbol |
| 7 | NonLossyASCII |
| 8 | ShiftJIS |
| 9 | ISOLatin2 |
| 10 | Unicode |
| 11 | WindowsCP1251 |
| 12 | WindowsCP1252 |
| 13 | WindowsCP1253 |
| 14 | WindowsCP1254 |
| 15 | WindowsCP1250 |
| 21 | ISO2022JP |
| 30 | MacOSRoman |
| 10 | UTF16String |
| 0x90000100 | UTF16BigEndian |
| 0x94000100 | UTF16LittleEndian |
| 0x8c000100 | UTF32String |
| 0x98000100 | UTF32BigEndian |
| 0x9c000100 | UTF32LittleEndian |
| 65536 | Proprietary |

**LicenseInfo**: Information about the current license.When queried, this setting will return a string containing information about the license this instance of a class is using. It will return the following information:

- Product: The product the license is for.
- Product Key: The key the license was generated from.
- License Source: Where the license was found (e.g., RuntimeLicense, License File).
- License Type: The type of license installed (e.g., Royalty Free, Single Server).
- Last Valid Build: The last valid build number for which the license will work.

**MaskSensitiveData**: Whether sensitive data is masked in log messages.In certain circumstances it may be beneficial to mask sensitive data, like passwords, in log messages. Set this to *true* to mask sensitive data. The default is *true*.

**ProcessIdleEvents**: Whether the class uses its internal event loop to process events when the main thread is idle.If set to False, the class will not fire internal idle events. Set this to False to use the class in a background thread on Mac OS. By default, this setting is True.

**SelectWaitMillis**: The length of time in milliseconds the class will wait when DoEvents is called if there are no events to process.If there are no events to process when DoEvents is called, the class will wait for the amount of time specified here before returning. The default value is 20.

**UseFIPSCompliantAPI**: Tells the class whether or not to use FIPS certified APIs.When set to *true*, the class will utilize the underlying operating system's certified APIs. Java editions, regardless of OS, utilize Bouncy Castle Federal Information Processing Standards (FIPS), while all other Windows editions make use of Microsoft security libraries.

FIPS mode can be enabled by setting the *UseFIPSCompliantAPI* configuration setting to *true*. This is a static setting that applies to all instances of all classes of the toolkit within the process. It is recommended to enable or disable this setting once before the component has been used to establish a connection. Enabling FIPS while an instance of the component is active and connected may result in unexpected behavior.

For more details, please see the [FIPS 140-2 Compliance](https://www.nsoftware.com/kb/articles/fips.rst) article.

NOTE: This setting is applicable only on Windows.

NOTE: Enabling FIPS compliance requires a special license; please contact [sales@nsoftware.com](mailto:sales@nsoftware.com) for details.

**UseInternalSecurityAPI**: Whether or not to use the system security libraries or an internal implementation. When set to *false*, the class will use the system security libraries by default to perform cryptographic functions where applicable.

Setting this configuration setting to *true* tells the class to use the internal implementation instead of using the system security libraries.

 On Windows, this setting is set to *false* by default. On Linux/macOS, this setting is set to *true* by default.

 To use the system security libraries for Linux, OpenSSL support must be enabled. For more information on how to enable OpenSSL, please refer to the [OpenSSL Notes](platforms.md) section.

# Trappable Errors ([MLKEM](#mlkem-class) Class)

### MLKEM Errors

|  |  |
| --- | --- |
| 102 | No Key specified. |
| 120 | Invalid parameter set. |
| 1401 | Specified ML-KEM key is invalid. |
| 1402 | Invalid parameter set. |
| 1403 | Public key must be specified. |
| 1404 | Private key must be specified. |
| 1405 | CipherText must be specified. |
| 1406 | Decapsulation failed. |