签名/验签(C/C++)
以密钥算法为RSA、摘要算法为SHA384、填充模式为PSS的密钥为例，完成签名、验签：
具体的场景介绍及支持的算法规格，请参考签名/验签介绍及算法规格。
在CMake脚本中链接相关动态库
target_link_libraries(entry PUBLIC libhuks_ndk.z.so libhuks_external_crypto.z.so)
开发步骤
签名
-
通过证书管理系统能力提供的证书选择接口获取keyUri作为resourceId，并作为密钥别名，打开资源后完成PIN码认证。
-
指定待签名的明文数据。
-
调用OH_Huks_InitParamSet指定算法参数配置，并指定KeyClass参数，tag为OH_HUKS_TAG_KEY_CLASS，值为OH_HUKS_KEY_CLASS_EXTENSION。
-
调用OH_Huks_InitSession初始化密钥会话，并获取会话的句柄handle。
-
调用OH_Huks_FinishSession结束密钥会话，获取签名signature。
验签
-
获取待验证的签名。
-
调用OH_Huks_InitParamSet指定算法参数配置，并指定KeyClass参数，tag为OH_HUKS_TAG_KEY_CLASS，值为OH_HUKS_KEY_CLASS_EXTENSION。
-
调用OH_Huks_InitSession初始化密钥会话，并获取会话的句柄handle。
-
调用OH_Huks_UpdateSession更新密钥会话。
-
调用OH_Huks_FinishSession结束密钥会话，验证签名。
开发案例
RSA/SHA384/PSS
#include "huks/native_huks_api.h"
#include "huks/native_huks_param.h"
#include "napi/native_api.h"
#include <string.h>
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;
}
static struct OH_Huks_Param g_signParamsTest[] = {
{
.tag = OH_HUKS_TAG_ALGORITHM,
.uint32Param = OH_HUKS_ALG_RSA
}, {
.tag = OH_HUKS_TAG_PURPOSE,
.uint32Param = OH_HUKS_KEY_PURPOSE_SIGN
}, {
.tag = OH_HUKS_TAG_KEY_SIZE,
.uint32Param = OH_HUKS_RSA_KEY_SIZE_2048
}, {
.tag = OH_HUKS_TAG_PADDING,
.uint32Param = OH_HUKS_PADDING_PSS
}, {
.tag = OH_HUKS_TAG_DIGEST,
.uint32Param = OH_HUKS_DIGEST_SHA384
}, {
.tag = OH_HUKS_TAG_KEY_CLASS,
.uint32Param = OH_HUKS_KEY_CLASS_EXTENSION
}
};
static struct OH_Huks_Param g_verifyParamsTest[] = {
{
.tag = OH_HUKS_TAG_ALGORITHM,
.uint32Param = OH_HUKS_ALG_RSA
}, {
.tag = OH_HUKS_TAG_PURPOSE,
.uint32Param = OH_HUKS_KEY_PURPOSE_VERIFY
}, {
.tag = OH_HUKS_TAG_KEY_SIZE,
.uint32Param = OH_HUKS_RSA_KEY_SIZE_2048
}, {
.tag = OH_HUKS_TAG_PADDING,
.uint32Param = OH_HUKS_PADDING_PSS
}, {
.tag = OH_HUKS_TAG_DIGEST,
.uint32Param = OH_HUKS_DIGEST_SHA384
}, {
.tag = OH_HUKS_TAG_KEY_CLASS,
.uint32Param = OH_HUKS_KEY_CLASS_EXTENSION
}
};
static const uint32_t RSA_COMMON_SIZE = 1024;
static const char *DATA_TO_SIGN = "Hks_RSA_Sign_Verify_Test_0000000000000000000000000000000000000000000000000000000"
"00000000000000000000000000000000000000000000000000000000000000000000000000000000"
"0000000000000000000000000000000000000000000000000000000000000000000000000_string";
static const char *KEY_ALIAS = "{\"providerName\":\"testProviderName\",\"abilityName\":\"CryptoExtension\","
"\"bundleName\":\"com.example.cryptoapplication\",\"index\":{\"key\":\"testKey\"}}";
static napi_value SignVerifyKey(napi_env env, napi_callback_info info)
{
// 假设keyAlias是获取的resourceId
struct OH_Huks_Blob keyAlias = {
(uint32_t)strlen(KEY_ALIAS),
(uint8_t *)KEY_ALIAS
};
struct OH_Huks_Blob inData = {
(uint32_t)strlen(DATA_TO_SIGN),
(uint8_t *)DATA_TO_SIGN
};
struct OH_Huks_ParamSet *signParamSet = nullptr;
struct OH_Huks_ParamSet *verifyParamSet = nullptr;
OH_Huks_Result ohResult;
do {
ohResult = InitParamSet(&signParamSet, g_signParamsTest, sizeof(g_signParamsTest) / sizeof(OH_Huks_Param));
if (ohResult.errorCode != OH_HUKS_SUCCESS) {
break;
}
ohResult = InitParamSet(&verifyParamSet, g_verifyParamsTest,
sizeof(g_verifyParamsTest) / sizeof(OH_Huks_Param));
if (ohResult.errorCode != OH_HUKS_SUCCESS) {
break;
}
/* 1. Sign */
// Init
uint8_t handleS[sizeof(uint64_t)] = {0};
struct OH_Huks_Blob handleSign = { (uint32_t)sizeof(uint64_t), handleS };
ohResult = OH_Huks_InitSession(&keyAlias, signParamSet, &handleSign, nullptr);
if (ohResult.errorCode != OH_HUKS_SUCCESS) {
break;
}
// Finish
uint8_t outDataS[RSA_COMMON_SIZE] = {0};
struct OH_Huks_Blob outDataSign = { RSA_COMMON_SIZE, outDataS };
ohResult = OH_Huks_FinishSession(&handleSign, signParamSet, &inData, &outDataSign);
if (ohResult.errorCode != OH_HUKS_SUCCESS) {
break;
}
/* 2. Verify */
// Init
uint8_t handleV[sizeof(uint64_t)] = {0};
struct OH_Huks_Blob handleVerify = { (uint32_t)sizeof(uint64_t), handleV };
ohResult = OH_Huks_InitSession(&keyAlias, verifyParamSet, &handleVerify, nullptr);
if (ohResult.errorCode != OH_HUKS_SUCCESS) {
break;
}
// Update loop
uint8_t temp[] = "out";
struct OH_Huks_Blob verifyOut = { (uint32_t)sizeof(temp), temp };
ohResult = OH_Huks_UpdateSession(&handleVerify, verifyParamSet, &inData, &verifyOut);
if (ohResult.errorCode != OH_HUKS_SUCCESS) {
break;
}
// Finish
ohResult = OH_Huks_FinishSession(&handleVerify, verifyParamSet, &outDataSign, &verifyOut);
if (ohResult.errorCode != OH_HUKS_SUCCESS) {
break;
}
} while (0);
OH_Huks_FreeParamSet(&signParamSet);
OH_Huks_FreeParamSet(&verifyParamSet);
napi_value ret;
napi_create_int32(env, ohResult.errorCode, &ret);
return ret;
}