harmony 鸿蒙明文导入密钥(C/C++)
明文导入密钥(C/C++)
以明文导入ECC密钥为例。具体的场景介绍及支持的算法规格,请参考密钥导入的支持的算法。
在CMake脚本中链接相关动态库
target_link_libraries(entry PUBLIC libhuks_ndk.z.so)
开发步骤
指定密钥别名keyAlias。 密钥别名的最大长度为128字节。
封装密钥属性集和密钥材料。通过OH_Huks_InitParamSet、OH_Huks_AddParams、OH_Huks_BuildParamSet构造密钥属性集paramSet。
- 密钥属性集中必须包含OH_Huks_KeyAlg、OH_Huks_KeySize、OH_Huks_KeyPurpose属性。
- 密钥材料须符合HUKS密钥材料格式。
调用OH_Huks_ImportKeyItem,传入密钥别名和密钥属性集,导入密钥。
/* 以下以明文导入AES密钥为例 */
#include "huks/native_huks_api.h"
#include "huks/native_huks_param.h"
#include "napi/native_api.h"
#include <cstring>
#define OH_HUKS_AES_KEY_SIZE_32 32
OH_Huks_Result InitParamSet(struct OH_Huks_ParamSet **paramSet, const struct OH_Huks_Param *params,
uint32_t paramCount)
{
OH_Huks_Result ret = OH_Huks_InitParamSet(paramSet);
if (ret.errorCode != OH_HUKS_SUCCESS) {
return ret;
}
ret = OH_Huks_AddParams(*paramSet, params, paramCount);
if (ret.errorCode != OH_HUKS_SUCCESS) {
OH_Huks_FreeParamSet(paramSet);
return ret;
}
ret = OH_Huks_BuildParamSet(paramSet);
if (ret.errorCode != OH_HUKS_SUCCESS) {
OH_Huks_FreeParamSet(paramSet);
return ret;
}
return ret;
}
struct OH_Huks_Param g_testImportKeyParam[] = {{.tag = OH_HUKS_TAG_ALGORITHM, .uint32Param = OH_HUKS_ALG_AES},
{.tag = OH_HUKS_TAG_PURPOSE, .uint32Param = OH_HUKS_KEY_PURPOSE_ENCRYPT},
{.tag = OH_HUKS_TAG_KEY_SIZE, .uint32Param = OH_HUKS_AES_KEY_SIZE_256},
{.tag = OH_HUKS_TAG_DIGEST, .uint32Param = OH_HUKS_DIGEST_NONE}};
static napi_value ImportKey(napi_env env, napi_callback_info info) {
const char *alias = "test_import";
struct OH_Huks_Blob aliasBlob = {.size = (uint32_t)strlen(alias), .data = (uint8_t *)alias};
/* DER格式的密钥,用于后续导入密钥 */
uint8_t pubKey[OH_HUKS_AES_KEY_SIZE_32] = {0xfb, 0x8b, 0x9f, 0x12, 0xa0, 0x83, 0x19, 0xbe, 0x6a, 0x6f, 0x63,
0x2a, 0x7c, 0x86, 0xba, 0xca, 0x64, 0x0b, 0x88, 0x96, 0xe2, 0xfa,
0x77, 0xbc, 0x71, 0xe3, 0x0f, 0x0f, 0x9e, 0x3c, 0xe5, 0xf9};
struct OH_Huks_Blob publicKey = {OH_HUKS_AES_KEY_SIZE_32, pubKey};
struct OH_Huks_ParamSet *testImportKeyParamSet = nullptr;
struct OH_Huks_Result ohResult;
do {
ohResult = InitParamSet(&testImportKeyParamSet, g_testImportKeyParam,
sizeof(g_testImportKeyParam) / sizeof(OH_Huks_Param));
if (ohResult.errorCode != OH_HUKS_SUCCESS) {
break;
}
if (ohResult.errorCode != OH_HUKS_SUCCESS) {
break;
}
/* 4. Import Key */
char newKey[] = "test_import";
struct OH_Huks_Blob newKeyAlias = {.size = (uint32_t)strlen(newKey), .data = (uint8_t *)newKey};
ohResult = OH_Huks_ImportKeyItem(&newKeyAlias, testImportKeyParamSet, &publicKey);
} while (0);
OH_Huks_FreeParamSet(&testImportKeyParamSet);
napi_value ret;
napi_create_int32(env, ohResult.errorCode, &ret);
return ret;
}
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