> For the complete documentation index, see [llms.txt](https://sandbox-docs.verifone.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sandbox-docs.verifone.com/s-adk-5.1-programmers-guide/readme/modules/group__sdivas.md).

# SDI client VAS interface

[Functions](#func-members)

|           |                                                                                                                                |
| --------- | ------------------------------------------------------------------------------------------------------------------------------ |
| Functions |                                                                                                                                |
| int       | [vasSetTerminalConfig](#gaf0cc3c42dbe67a61120be93a0cb0bfd0) (const std::string \&config)                                       |
| int       | [vasGetTerminalConfig](#ga0f4b1008a858641f0dc600b8e5f13398) (const std::string \&appid, std::string \&config)                  |
| int       | [vasGetConfig](#gac85917981f00dbad710c46151a43197c) (const std::string \&appid, std::string \&config)                          |
| int       | [vasActivate](#gaf126e697ae90b281c40f39f12da03a10) (const std::string \&appid, const std::string \&config, std::string \&data) |
| int       | [vasCancel](#gaa71f392b153b5bb901159a5953d06f55) ()                                                                            |
| int       | [vasUpdateConfig](#gaa4d6d9c81879faf1a5385a6fc66f3181) (const std::string \&appid, const std::string \&config)                 |
| int       | [vasCancelConfig](#gae24680ea4deab35ba4a6e3124c5e0683) (const std::string \&appid)                                             |
| int       | [vasPreload](#ga2335b9dd2f80d75773117da7968f8635) (const std::string \&appid, const std::string \&config)                      |
| int       | [vasCancelPreload](#gae2a688f4a50c36632c5e690f86b9ec15) (const std::string \&appid)                                            |
| int       | [vasDecrypt](#ga34b42c5ac7267717ec6d59f4a4dfe325) (const std::string \&appid, const std::string \&cipher, std::string \&plain) |
| int       | [vasAction](#gad286a6d53139efbfcecd1feb7217e348) (const std::string \&appid, const std::string \&in, std::string \&out)        |

### DetailedDescription <a href="#detailed-description" id="detailed-description"></a>

### FunctionDocumentation <a href="#function-documentation" id="function-documentation"></a>

### vasAction() <a href="#gad286a6d53139efbfcecd1feb7217e348" id="gad286a6d53139efbfcecd1feb7217e348"></a>

int vasAction

VAS action

**Parameters**

\[in] **appid** application unique identifier \[in] **in** input data \[out] **out** output data

#### Returns

SDI error code ([Result](/s-adk-5.1-programmers-guide/readme/namespaces/namespacevfisdi.md#a28287671eaf7406afd604bd055ba4066))

### vasActivate() <a href="#gaf126e697ae90b281c40f39f12da03a10" id="gaf126e697ae90b281c40f39f12da03a10"></a>

int vasActivate

Activates NFC interface, runs through wallet kernel flow and retrieves VAS data. (32-03)

**Parameters**

\[in] **appid** application unique identifier \[in] **config** set of dynamic parameters to be merged with configuration from data base \[out] **data** VAS data received from the handset

#### Returns

SDI error code ([Result](/s-adk-5.1-programmers-guide/readme/namespaces/namespacevfisdi.md#a28287671eaf7406afd604bd055ba4066))

### vasCancel() <a href="#gaa71f392b153b5bb901159a5953d06f55" id="gaa71f392b153b5bb901159a5953d06f55"></a>

int vasCancel

Cancel technology discovery process (32-04)

#### Returns

SDI error code ([Result](/s-adk-5.1-programmers-guide/readme/namespaces/namespacevfisdi.md#a28287671eaf7406afd604bd055ba4066))

### vasCancelConfig() <a href="#gae24680ea4deab35ba4a6e3124c5e0683" id="gae24680ea4deab35ba4a6e3124c5e0683"></a>

int vasCancelConfig

Clear all the VAS configuration by application ID. (32-06)

**Parameters**

\[in] **appid** application unique identifier

#### Returns

SDI error code ([Result](/s-adk-5.1-programmers-guide/readme/namespaces/namespacevfisdi.md#a28287671eaf7406afd604bd055ba4066))

### vasCancelPreload() <a href="#gae2a688f4a50c36632c5e690f86b9ec15" id="gae2a688f4a50c36632c5e690f86b9ec15"></a>

int vasCancelPreload

Clear preloaded configuration by application ID and pull latest configuration from data base. (32-08)

**Parameters**

\[in] **appid** application unique identifier

#### Returns

SDI error code ([Result](/s-adk-5.1-programmers-guide/readme/namespaces/namespacevfisdi.md#a28287671eaf7406afd604bd055ba4066))

### vasDecrypt() <a href="#ga34b42c5ac7267717ec6d59f4a4dfe325" id="ga34b42c5ac7267717ec6d59f4a4dfe325"></a>

int vasDecrypt

Decrypt an encrypted VAS response. (32-09)

**Parameters**

\[in] **appid** application unique identifier \[in] **cipher** VAS data response with the included encrypted message \[out] **plain** VAS data response with the included decrypted message

#### Returns

SDI error code ([Result](/s-adk-5.1-programmers-guide/readme/namespaces/namespacevfisdi.md#a28287671eaf7406afd604bd055ba4066))

### vasGetConfig() <a href="#gac85917981f00dbad710c46151a43197c" id="gac85917981f00dbad710c46151a43197c"></a>

int vasGetConfig

Read the most updated wallet configuration (32-02)

**Parameters**

\[in] **appid** application unique identifier \[out] **config** terminal configuration and configuration of all wallets in JSON format

#### Returns

SDI error code ([Result](/s-adk-5.1-programmers-guide/readme/namespaces/namespacevfisdi.md#a28287671eaf7406afd604bd055ba4066))

### vasGetTerminalConfig() <a href="#ga0f4b1008a858641f0dc600b8e5f13398" id="ga0f4b1008a858641f0dc600b8e5f13398"></a>

int vasGetTerminalConfig

Read the most updated terminal configuration (32-01)

**Parameters**

\[in] **appid** application unique identifier \[out] **config** terminal configuration in JSON format

#### Returns

SDI error code ([Result](/s-adk-5.1-programmers-guide/readme/namespaces/namespacevfisdi.md#a28287671eaf7406afd604bd055ba4066))

### vasPreload() <a href="#ga2335b9dd2f80d75773117da7968f8635" id="ga2335b9dd2f80d75773117da7968f8635"></a>

int vasPreload

Configure the terminal with wallet specific parameters. (32-07)

**Parameters**

\[in] **appid** application unique identifier \[in] **config** set of preload parameters to be merged with configuration from data base in JSON format

#### Returns

SDI error code ([Result](/s-adk-5.1-programmers-guide/readme/namespaces/namespacevfisdi.md#a28287671eaf7406afd604bd055ba4066))

### vasSetTerminalConfig() <a href="#gaf0cc3c42dbe67a61120be93a0cb0bfd0" id="gaf0cc3c42dbe67a61120be93a0cb0bfd0"></a>

int vasSetTerminalConfig

Configure the temrinal with terminal parameters (32-00)

**Parameters**

\[in] **config** terminal configuration in JSON format

#### Returns

SDI error code ([Result](/s-adk-5.1-programmers-guide/readme/namespaces/namespacevfisdi.md#a28287671eaf7406afd604bd055ba4066))

### vasUpdateConfig() <a href="#gaa4d6d9c81879faf1a5385a6fc66f3181" id="gaa4d6d9c81879faf1a5385a6fc66f3181"></a>

int vasUpdateConfig

Configure the terminal with wallet specific parameters. (32-05)

**Parameters**

\[in] **appid** application unique identifier \[in] **config** set of parameters to configure one or multiple wallets in JSON format

#### Returns

SDI error code ([Result](/s-adk-5.1-programmers-guide/readme/namespaces/namespacevfisdi.md#a28287671eaf7406afd604bd055ba4066))


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