harmony 鸿蒙CryptoDigestApi
CryptoDigestApi
Overview
Provides APIs for message digest (MD) algorithms.
Since: 12
Summary
Files
| Name | Description |
|---|---|
| crypto_digest.h | Defines APIs for MD algorithms. |
Types
| Name | Description |
|---|---|
| typedef struct OH_CryptoDigest OH_CryptoDigest | Defines an MD. |
Functions
| Name | Description |
|---|---|
| OH_Crypto_ErrCode OH_CryptoDigest_Create (const char *algoName, OH_CryptoDigest **ctx) | Creates an MD instance based on the given algorithm name. |
| OH_Crypto_ErrCode OH_CryptoDigest_Update (OH_CryptoDigest *ctx, Crypto_DataBlob *in) | Updates the data used for generating an MD. |
| OH_Crypto_ErrCode OH_CryptoDigest_Final (OH_CryptoDigest *ctx, Crypto_DataBlob *out) | Generates an MD. |
| uint32_t OH_CryptoDigest_GetLength (OH_CryptoDigest *ctx) | Obtains the length of an MD. |
| const char * OH_CryptoDigest_GetAlgoName (OH_CryptoDigest *ctx) | Obtains the digest algorithm. |
| void OH_DigestCrypto_Destroy (OH_CryptoDigest *ctx) | Destroys an MD instance. |
Type Description
OH_CryptoDigest
typedef struct OH_CryptoDigestOH_CryptoDigest
Description
Defines an MD.
Since: 12
Function Description
OH_CryptoDigest_Create()
OH_Crypto_ErrCode OH_CryptoDigest_Create (const char *algoName, OH_CryptoDigest **ctx )
Description
Creates an MD instance based on the given algorithm name.
Since: 12
Parameters
| Name | Description |
|---|---|
| algoName | Pointer to the algorithm used to generate the MD instance. For example, ‘SHA256’. |
| ctx | Pointer to the MD instance created. |
Returns
0: The operation is successful.
401: Invalid parameters are detected.
801: The operation is not supported.
17620001: A memory error occurred.
17630001: Failed to call an API of a third-party algorithm library.
OH_CryptoDigest_Final()
OH_Crypto_ErrCode OH_CryptoDigest_Final (OH_CryptoDigest *ctx, Crypto_DataBlob *out )
Description
Generates an MD.
Since: 12
Parameters
| Name | Description |
|---|---|
| ctx | Pointer to the MD instance. |
| out | Pointer to the MD generated. |
Returns
0: The operation is successful.
401: Invalid parameters are detected.
801: The operation is not supported.
17620001: A memory error occurred.
17630001: Failed to call an API of a third-party algorithm library.
See
OH_CryptoDigest_GetAlgoName()
const char* OH_CryptoDigest_GetAlgoName (OH_CryptoDigest *ctx)
Description
Obtains the digest algorithm.
Since: 12
Parameters
| Name | Description |
|---|---|
| ctx | Pointer to the MD instance. |
Returns
MD algorithm obtained.
OH_CryptoDigest_GetLength()
uint32_t OH_CryptoDigest_GetLength (OH_CryptoDigest *ctx)
Description
Obtains the length of an MD.
Since: 12
Parameters
| Name | Description |
|---|---|
| ctx | Pointer to the MD instance. |
Returns
0: The operation is successful.
401: Invalid parameters are detected.
801: The operation is not supported.
17620001: A memory error occurred.
17630001: Failed to call an API of a third-party algorithm library.
OH_CryptoDigest_Update()
OH_Crypto_ErrCode OH_CryptoDigest_Update (OH_CryptoDigest *ctx, Crypto_DataBlob *in )
Description
Updates the data used for generating an MD.
Since: 12
Parameters
| Name | Description |
|---|---|
| ctx | Pointer to the MD instance. |
| in | Pointer to the data to pass in. |
Returns
0: The operation is successful.
401: Invalid parameters are detected.
801: The operation is not supported.
17620001: A memory error occurred.
17630001: Failed to call an API of a third-party algorithm library.
See
OH_DigestCrypto_Destroy()
void OH_DigestCrypto_Destroy (OH_CryptoDigest *ctx)
Description
Destroys an MD instance.
Since: 12
Parameters
| Name | Description |
|---|---|
| ctx | Pointer to the MD instance. |
Returns
0: The operation is successful.
401: Invalid parameters are detected.
801: The operation is not supported.
17620001: A memory error occurred.
17630001: Failed to call an API of a third-party algorithm library.
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