---
product: Chilkat
product_version: 11.7.0
language: wc
language_label: Unicode C
class: AuthAzureStorage
license: bundle
deprecated: false
reference_html: https://www.chilkatsoft.com/refdoc/wc_CkAuthAzureStorageWRef.html
---
# Chilkat AuthAzureStorage — Unicode C — v11.7.0

> Chilkat 11.7.0 · language=wc · class=AuthAzureStorage
> Other versions: replace `11.7.0` in this URL. Other languages: `https://www.chilkatsoft.com/ai-docs/v/11.7.0/<lang>/classes/AuthAzureStorage.md`.
> Language-wide rules (install, unlock, error model, strings/bytes): `https://www.chilkatsoft.com/ai-docs/v/11.7.0/wc/guide.md`.

## Purpose

**Authenticate Azure Storage REST requests with account-key Shared Key signing.**

`Chilkat.AuthAzureStorage` is a credential object for Azure Storage Services authentication. It stores the storage account name, Base64 account access key, Azure Storage service type, authentication scheme, and `x-ms-version` API version used when signing REST requests for Blob, Queue, File, or Table storage.

**Azure Storage credentials**

Hold the storage account name and Base64 account access key used to sign Azure Storage REST requests.

**Shared Key signing**

Configure Azure Storage authentication using `SharedKey` or `SharedKeyLite`, depending on the service and request style.

**Service targeting**

Specify the Azure Storage service being accessed, such as `Blob`, `Queue`, `File`, or `Table`.

**API version header**

Set the `x-ms-version` value required by the Azure Storage REST API version being used.

**REST integration**

Use the configured object with `Chilkat.Rest` so requests are signed automatically before being sent.

**Low-level control**

Pair this authentication object with manually constructed REST requests when application code needs direct control over Azure Storage operations.

**Common pattern:** Create an `AuthAzureStorage` object, set the storage `Account`, Base64 `AccessKey`, `Service`, `Scheme`, and `XMsVersion`, then attach it to a `Chilkat.Rest` request workflow. Use `AuthAzureStorage` for Shared Key authorization headers; use `Chilkat.AuthAzureSAS` when the request should be authorized with a SAS query token instead.

For an extended overview, see [AuthAzureStorage Class Overview](https://www.chilkatsoft.com/authazurestorage_class_overview.asp).

## Object creation, unlocking and error handling

**Create/Dispose**

```c
HCkAuthAzureStorageW instance = CkAuthAzureStorageW_Create();
// ...
CkAuthAzureStorageW_Dispose(instance);
```

`HCkAuthAzureStorageW CkAuthAzureStorageW_Create(void);`

Creates an instance of the HCkAuthAzureStorageW object and returns a handle ("void \*" pointer). The handle is passed in the 1st argument for the functions listed on this page.

`void CkAuthAzureStorageW_Dispose(HCkAuthAzureStorageW handle);`

Objects created by calling CkAuthAzureStorageW_Create must be freed by calling this method. A memory leak occurs if a handle is not disposed by calling this function. Also, any handle returned by a Chilkat "C" function must also be freed by the application by calling the appropriate Dispose method, such as CkAuthAzureStorageW_Dispose.

Call `Global.UnlockBundle` once at the start of the program, before using this or any other Chilkat class. Any string unlocks a fully functional 30-day trial; a purchased unlock code is used in production. See `guide.md` for the exact code in Unicode C.

## Members common to every Chilkat class

Documented once per language in `common-members.md`; listed here so this page is self-contained.

| Property | Signature | Access | Meaning |
|---|---|---|---|
| `DebugLogFilePath` | `void CkAuthAzureStorageW_getDebugLogFilePath(HCkAuthAzureStorageW cHandle, HCkString retval); void CkAuthAzureStorageW_putDebugLogFilePath(HCkAuthAzureStorageW cHandle, const wchar_t *newVal); const wchar_t *CkAuthAzureStorageW_debugLogFilePath(HCkAuthAzureStorageW cHandle);` | read/write | If set to a file path, this property logs the LastErrorText of each Chilkat method or property call to the specified file. |
| `LastErrorHtml` | `void CkAuthAzureStorageW_getLastErrorHtml(HCkAuthAzureStorageW cHandle, HCkString retval); const wchar_t *CkAuthAzureStorageW_lastErrorHtml(HCkAuthAzureStorageW cHandle);` | read-only | Provides HTML-formatted information about the last called method or property. |
| `LastErrorText` | `void CkAuthAzureStorageW_getLastErrorText(HCkAuthAzureStorageW cHandle, HCkString retval); const wchar_t *CkAuthAzureStorageW_lastErrorText(HCkAuthAzureStorageW cHandle);` | read-only | Provides plain text information about the last called method or property. |
| `LastErrorXml` | `void CkAuthAzureStorageW_getLastErrorXml(HCkAuthAzureStorageW cHandle, HCkString retval); const wchar_t *CkAuthAzureStorageW_lastErrorXml(HCkAuthAzureStorageW cHandle);` | read-only | Provides XML-formatted information about the last called method or property. |
| `LastMethodSuccess` | `BOOL CkAuthAzureStorageW_getLastMethodSuccess(HCkAuthAzureStorageW cHandle); void CkAuthAzureStorageW_putLastMethodSuccess(HCkAuthAzureStorageW cHandle, BOOL newVal);` | read/write | Indicates the success or failure of the most recent method call: `TRUE` means success, `FALSE` means failure. |
| `VerboseLogging` | `BOOL CkAuthAzureStorageW_getVerboseLogging(HCkAuthAzureStorageW cHandle); void CkAuthAzureStorageW_putVerboseLogging(HCkAuthAzureStorageW cHandle, BOOL newVal);` | read/write | If set to `TRUE`, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. |
| `Version` | `void CkAuthAzureStorageW_getVersion(HCkAuthAzureStorageW cHandle, HCkString retval); const wchar_t *CkAuthAzureStorageW_version(HCkAuthAzureStorageW cHandle);` | read-only | Version of the component/library, such as "10.1.0" |

## Member index

| Member | Kind | Signature |
|---|---|---|
| `AccessKey` | property, read/write | `void CkAuthAzureStorageW_getAccessKey(HCkAuthAzureStorageW cHandle, HCkString retval); void CkAuthAzureStorageW_putAccessKey(HCkAuthAzureStorageW cHandle, const wchar_t *newVal); const wchar_t *CkAuthAzureStorageW_accessKey(HCkAuthAzureStorageW cHandle);` |
| `Account` | property, read/write | `void CkAuthAzureStorageW_getAccount(HCkAuthAzureStorageW cHandle, HCkString retval); void CkAuthAzureStorageW_putAccount(HCkAuthAzureStorageW cHandle, const wchar_t *newVal); const wchar_t *CkAuthAzureStorageW_account(HCkAuthAzureStorageW cHandle);` |
| `Scheme` | property, read/write | `void CkAuthAzureStorageW_getScheme(HCkAuthAzureStorageW cHandle, HCkString retval); void CkAuthAzureStorageW_putScheme(HCkAuthAzureStorageW cHandle, const wchar_t *newVal); const wchar_t *CkAuthAzureStorageW_scheme(HCkAuthAzureStorageW cHandle);` |
| `Service` | property, read/write | `void CkAuthAzureStorageW_getService(HCkAuthAzureStorageW cHandle, HCkString retval); void CkAuthAzureStorageW_putService(HCkAuthAzureStorageW cHandle, const wchar_t *newVal); const wchar_t *CkAuthAzureStorageW_service(HCkAuthAzureStorageW cHandle);` |
| `XMsVersion` | property, read/write | `void CkAuthAzureStorageW_getXMsVersion(HCkAuthAzureStorageW cHandle, HCkString retval); void CkAuthAzureStorageW_putXMsVersion(HCkAuthAzureStorageW cHandle, const wchar_t *newVal); const wchar_t *CkAuthAzureStorageW_xMsVersion(HCkAuthAzureStorageW cHandle);` |

## Properties

### AuthAzureStorage.AccessKey

`Chilkat 11.7.0 · wc · AuthAzureStorage · AccessKey · property · read/write · since 9.5.0.58`

```c
void CkAuthAzureStorageW_getAccessKey(HCkAuthAzureStorageW cHandle, HCkString retval);
void CkAuthAzureStorageW_putAccessKey(HCkAuthAzureStorageW cHandle, const wchar_t *newVal);
const wchar_t *CkAuthAzureStorageW_accessKey(HCkAuthAzureStorageW cHandle);
```

A valid base64 access key for the Azure storage account.

### AuthAzureStorage.Account

`Chilkat 11.7.0 · wc · AuthAzureStorage · Account · property · read/write · since 9.5.0.58`

```c
void CkAuthAzureStorageW_getAccount(HCkAuthAzureStorageW cHandle, HCkString retval);
void CkAuthAzureStorageW_putAccount(HCkAuthAzureStorageW cHandle, const wchar_t *newVal);
const wchar_t *CkAuthAzureStorageW_account(HCkAuthAzureStorageW cHandle);
```

The Azure storage account name. (A storage account can contain zero or more containers. A container contains properties, metadata, and zero or more blobs. A blob is any single entity comprised of binary data, properties, and metadata. )

### AuthAzureStorage.Scheme

`Chilkat 11.7.0 · wc · AuthAzureStorage · Scheme · property · read/write · since 9.5.0.58`

```c
void CkAuthAzureStorageW_getScheme(HCkAuthAzureStorageW cHandle, HCkString retval);
void CkAuthAzureStorageW_putScheme(HCkAuthAzureStorageW cHandle, const wchar_t *newVal);
const wchar_t *CkAuthAzureStorageW_scheme(HCkAuthAzureStorageW cHandle);
```

Can be `SharedKey` or `SharedKeyLite`. The default value is `SharedKey`.

### AuthAzureStorage.Service

`Chilkat 11.7.0 · wc · AuthAzureStorage · Service · property · read/write · since 9.5.0.58`

```c
void CkAuthAzureStorageW_getService(HCkAuthAzureStorageW cHandle, HCkString retval);
void CkAuthAzureStorageW_putService(HCkAuthAzureStorageW cHandle, const wchar_t *newVal);
const wchar_t *CkAuthAzureStorageW_service(HCkAuthAzureStorageW cHandle);
```

Can be `Blob`, `Queue`, `File`, or `Table`. The default is `Blob`.

**Note:** Authentication for the `Table` service did not work in versions prior to v9.5.0.83.

### AuthAzureStorage.XMsVersion

`Chilkat 11.7.0 · wc · AuthAzureStorage · XMsVersion · property · read/write · since 9.5.0.58`

```c
void CkAuthAzureStorageW_getXMsVersion(HCkAuthAzureStorageW cHandle, HCkString retval);
void CkAuthAzureStorageW_putXMsVersion(HCkAuthAzureStorageW cHandle, const wchar_t *newVal);
const wchar_t *CkAuthAzureStorageW_xMsVersion(HCkAuthAzureStorageW cHandle);
```

If set, automatically adds the `x-ms-version` HTTP request header to Azure Storage requests. The default value is `2014-02-14`.