CryptoSymCipherApi

Overview

Provides APIs for symmetric key encryption and decryption.

Since: 12

Summary

Files

Name	Description
crypto_sym_cipher.h	Defines APIs for symmetric encryption and decryption.

Types

Name	Description
typedef struct OH_CryptoSymCipher OH_CryptoSymCipher	Defines a symmetric encryption and decryption instance.
typedef struct OH_CryptoSymCipherParams OH_CryptoSymCipherParams	Defines symmetric encryption and decryption parameters.

Enums

Name	Description
CryptoSymCipher_ParamsType { CRYPTO_IV_DATABLOB = 100, CRYPTO_AAD_DATABLOB = 101, CRYPTO_TAG_DATABLOB = 102 }	Enumerates the types of symmetric encryption and decryption parameters.

Functions

Name	Description
OH_Crypto_ErrCode OH_CryptoSymCipherParams_Create (OH_CryptoSymCipherParams **params)	Creates a symmetric encryption/decryption parameter instance.
OH_Crypto_ErrCode OH_CryptoSymCipherParams_SetParam (OH_CryptoSymCipherParams *params, CryptoSymCipher_ParamsType paramsType, Crypto_DataBlob *value)	Sets a symmetric encryption/decryption parameter.
void OH_CryptoSymCipherParams_Destroy (OH_CryptoSymCipherParams *params)	Destroys a symmetric encryption/decryption parameter instance.
OH_Crypto_ErrCode OH_CryptoSymCipher_Create (const char *algoName, OH_CryptoSymCipher **ctx)	Creates a symmetric cipher instance based on the given algorithm name.
OH_Crypto_ErrCode OH_CryptoSymCipher_Init (OH_CryptoSymCipher *ctx, Crypto_CipherMode mod, OH_CryptoSymKey *key, OH_CryptoSymCipherParams *params)	Initializes a symmetric cipher instance.
OH_Crypto_ErrCode OH_CryptoSymCipher_Update (OH_CryptoSymCipher *ctx, Crypto_DataBlob *in, Crypto_DataBlob *out)	Updates the data to be encrypted or decrypted.
OH_Crypto_ErrCode OH_CryptoSymCipher_Final (OH_CryptoSymCipher *ctx, Crypto_DataBlob *in, Crypto_DataBlob *out)	Outputs the remaining data (generated by the block cipher mode) and finishes the encryption or decryption operation.
const char * OH_CryptoSymCipher_GetAlgoName (OH_CryptoSymCipher *ctx)	Obtains the symmetric encryption/decryption algorithm.
void OH_CryptoSymCipher_Destroy (OH_CryptoSymCipher *ctx)	Destroys a symmetric cipher instance.

Type Description

OH_CryptoSymCipher

typedef struct OH_CryptoSymCipherOH_CryptoSymCipher

Description

Defines a symmetric encryption and decryption instance.

Since: 12

OH_CryptoSymCipherParams

typedef struct OH_CryptoSymCipherParamsOH_CryptoSymCipherParams

Description

Defines symmetric encryption and decryption parameters.

Since: 12

Enum Description

CryptoSymCipher_ParamsType

enum CryptoSymCipher_ParamsType

Description

Enumerates the types of symmetric encryption and decryption parameters.

Since: 12

Enum	Description
CRYPTO_IV_DATABLOB	Initialization vector (IV).
CRYPTO_AAD_DATABLOB	Additional authentication data (AAD).
CRYPTO_TAG_DATABLOB	authTag.

Function Description

OH_CryptoSymCipher_Create()

OH_Crypto_ErrCode OH_CryptoSymCipher_Create (const char *algoName, OH_CryptoSymCipher **ctx )

Description

Creates a symmetric cipher instance based on the given algorithm name.

Since: 12

Parameters

Name	Description
algoName	Pointer to the algorithm used to create a symmetric cipher instance. For example, 'AES128|GCM|PKCS7'.
ctx	Pointer to the symmetric cipher instance created.

Returns

OH_Crypto_ErrCode:

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_CryptoSymCipher_Destroy()

void OH_CryptoSymCipher_Destroy (OH_CryptoSymCipher *ctx)

Description

Destroys a symmetric cipher instance.

Since: 12

Parameters

Name	Description
ctx	Pointer to the symmetric cipher instance to destroy.

OH_CryptoSymCipher_Final()

OH_Crypto_ErrCode OH_CryptoSymCipher_Final (OH_CryptoSymCipher *ctx, Crypto_DataBlob *in, Crypto_DataBlob *out )

Description

Outputs the remaining data (generated by the block cipher mode) and finishes the encryption or decryption operation.

Since: 12

Parameters

Name	Description
ctx	Pointer to the symmetric cipher instance.
in	Pointer to the data to be encrypted or decrypted.
out	Pointer to the remaining data encrypted or decrypted.

Returns

OH_Crypto_ErrCode:

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_CryptoSymCipher_Init

OH_CryptoSymCipher_Update

OH_CryptoSymCipher_GetAlgoName()

const char* OH_CryptoSymCipher_GetAlgoName (OH_CryptoSymCipher *ctx)

Description

Obtains the symmetric encryption/decryption algorithm.

Since: 12

Parameters

Name	Description
ctx	Pointer to the symmetric cipher instance.

Returns

Symmetric encryption/decryption algorithm obtained.

OH_CryptoSymCipher_Init()

OH_Crypto_ErrCode OH_CryptoSymCipher_Init (OH_CryptoSymCipher *ctx, Crypto_CipherMode mod, OH_CryptoSymKey *key, OH_CryptoSymCipherParams *params )

Description

Initializes a symmetric cipher instance.

Since: 12

Parameters

Name	Description
ctx	Pointer to the symmetric cipher instance.
mod	Operation to perform, encryption or decryption.
key	Pointer to the symmetric key.
params	Pointer to the parameters for encryption or decryption.

Returns

OH_Crypto_ErrCode:

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_CryptoSymCipher_Update()

OH_Crypto_ErrCode OH_CryptoSymCipher_Update (OH_CryptoSymCipher *ctx, Crypto_DataBlob *in, Crypto_DataBlob *out )

Description

Updates the data to be encrypted or decrypted.

Since: 12

Parameters

Name	Description
ctx	Pointer to the symmetric cipher instance.
in	Data to be encrypted or decrypted.
out	Pointer to the data updated.

Returns

OH_Crypto_ErrCode:

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_CryptoSymCipherParams_Create()

OH_Crypto_ErrCode OH_CryptoSymCipherParams_Create (OH_CryptoSymCipherParams **params)

Description

Creates a symmetric encryption/decryption parameter instance.

Since: 12

Parameters

Name	Description
params	Pointer to the symmetric encryption/decryption parameter instance.

Returns

OH_Crypto_ErrCode:

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_CryptoSymCipherParams_Destroy()

void OH_CryptoSymCipherParams_Destroy (OH_CryptoSymCipherParams *params)

Description

Destroys a symmetric encryption/decryption parameter instance.

Since: 12

Parameters

Name	Description
params	Pointer to the symmetric encryption/decryption parameter instance.

OH_CryptoSymCipherParams_SetParam()

OH_Crypto_ErrCode OH_CryptoSymCipherParams_SetParam (OH_CryptoSymCipherParams *params, CryptoSymCipher_ParamsType paramsType, Crypto_DataBlob *value )

Description

Sets a symmetric encryption/decryption parameter.

Since: 12

Parameters

Name	Description
params	Pointer to the symmetric encryption/decryption parameter instance.
paramsType	Name of the parameter to set.
value	Pointer to the parameter value set.

Returns

OH_Crypto_ErrCode:

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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