明文导入密钥(ArkTS)
以导入AES256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。
开发步骤
-
指定密钥别名keyAlias。 密钥别名的最大长度为64字节。
-
封装密钥属性集和密钥材料。
- 密钥属性集同样与密钥生成中指定的密钥属性一致,须包含HuksKeyAlg、HuksKeySize、HuksKeyPurpose属性。
- 密钥材料须符合HUKS密钥材料格式,并以Uint8Array形式赋值给HuksOptions的inData字段。
-
调用huks.importKeyItem,传入密钥别名和密钥属性集,即可导入密钥。
/* 以下以导入AES256密钥的Callback操作使用为例 */
import huks from '@ohos.security.huks'
/* 密钥材料 */
let plainTextSize32 = new Uint8Array([
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
]);
/* 1.确定密钥别名 */
let keyAlias = 'AES256Alias_sample';
/* 2.封装密钥属性集和密钥材料 */
class propertyType {
tag: huks.HuksTag = huks.HuksTag.HUKS_TAG_ALGORITHM;
value: huks.HuksKeyAlg | huks.HuksKeySize | huks.HuksKeyPurpose = huks.HuksKeyAlg.HUKS_ALG_RSA;
}
let properties: propertyType[] = [
{
tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
value:huks.HuksKeyAlg.HUKS_ALG_AES
},
{
tag: huks.HuksTag.HUKS_TAG_KEY_SIZE,
value: huks.HuksKeySize.HUKS_AES_KEY_SIZE_256
},
{
tag: huks.HuksTag.HUKS_TAG_PURPOSE,
value: huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_ENCRYPT | huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_DECRYPT
},
]
let options: huks.HuksOptions = {
properties: properties,
inData: plainTextSize32
};
/* 3.明文导入密钥 */
try {
huks.importKeyItem(keyAlias, options, (error, data) => {
if (error) {
console.error(`callback: importKeyItem failed` + error);
} else {
console.info(`callback: importKeyItem success`);
}
});
} catch (error) {
console.error(`callback: importKeyItem input arg invalid` + error);
}
调测验证
调用huks.isKeyItemExist验证密钥是否存在,如密钥存在即表示密钥导入成功。
import huks from '@ohos.security.huks';
let keyAlias = 'AES256Alias_sample';
let isKeyExist = false;
class keyPropertyType {
tag: huks.HuksTag = huks.HuksTag.HUKS_TAG_ALGORITHM;
value: huks.HuksKeyAlg = huks.HuksKeyAlg.HUKS_ALG_RSA;
}
let keyProperties: keyPropertyType[] = [
{
tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
value: huks.HuksKeyAlg.HUKS_ALG_AES
},
]
let huksOptions: huks.HuksOptions = {
properties: keyProperties, // 非空填充
inData: new Uint8Array(new Array()) // 非空填充
}
try {
huks.isKeyItemExist(keyAlias, huksOptions, (error, data) => {
if (error) {
console.error(`callback: isKeyItemExist failed` + error);
} else {
if (data !== null && data.valueOf() !== null) {
isKeyExist = data.valueOf();
console.info(`callback: isKeyItemExist success, isKeyExist = ${isKeyExist}`);
}
}
});
} catch (error) {
console.error(`callback: isKeyItemExist input arg invalid` + error);
}