加密导入密钥(ArkTS)

以加密导入ECDH密钥对为例，涉及业务侧加密密钥的密钥生成、协商等操作不在本示例中体现。

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

1. 设备A（导入设备）将待导入密钥转换成HUKS密钥材料格式To_Import_Key（仅针对非对称密钥，若待导入密钥是对称密钥则可省略此步骤）。

2. 设备B（被导入设备）生成一个加密导入用途的、用于协商的非对称密钥对Wrapping_Key（公钥Wrapping_Pk，私钥Wrapping_Sk），其密钥用途设置为unwrap，导出Wrapping_Key的公钥材料Wrapping_Pk并保存。

3. 设备A使用和设备B同样的算法，生成一个加密导入用途的、用于协商的非对称密钥对Caller_Key（公钥Caller_Pk，私钥Caller_Sk），导出Caller_Key的公钥材料Caller_Pk并保存。

4. 设备A生成一个对称密钥Caller_Kek，该密钥后续将用于加密To_Import_Key。

5. 设备A基于Caller_Key的私钥Caller_Sk和设备B Wrapping_Key的公钥Wrapping_Pk，协商出Shared_Key。

6. 设备A使用Caller_Kek加密To_Import_Key，生成To_Import_Key_Enc。

7. 设备A使用Shared_Key加密Caller_Kek，生成Caller_Kek_Enc。

8. 设备A封装Caller_Pk、Caller_Kek_Enc、To_Import_Key_Enc等加密导入的密钥材料并发送给设备B，加密导入密钥材料格式见加密导入密钥材料格式。

9. 设备B导入封装的加密密钥材料。

10. 设备A、B删除用于加密导入的密钥。

import { expect } from '@ohos/hypium';
import huks from '@ohos.security.huks';
import { BusinessError } from '@ohos.base';
let IV = '0000000000000000';
let AAD = "abababababababab";
let NONCE = "hahahahahaha";
let TAG_SIZE = 16;
let FILED_LENGTH = 4;
let importedAes192PlainKey = "The aes192 key to import";
let callerAes256Kek = "The is kek to encrypt aes192 key";
let callerKeyAlias = "test_caller_key_ecdh_aes192";
let callerKekAliasAes256 = "test_caller_kek_ecdh_aes256";
let callerAgreeKeyAliasAes256 = "test_caller_agree_key_ecdh_aes256";
let importedKeyAliasAes192 = "test_import_key_ecdh_aes192";
let huksPubKey: Uint8Array;
let callerSelfPublicKey: Uint8Array;
let outSharedKey: Uint8Array;
let outPlainKeyEncData: Uint8Array;
let outKekEncData: Uint8Array;
let outKekEncTag: Uint8Array;
let outAgreeKeyEncTag: Uint8Array;
let mask = [0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000];
function subUint8ArrayOf(arrayBuf: Uint8Array, start: number, end: number) {
    let arr: number[] = [];
    for (let i = start; i < end && i < arrayBuf.length; ++i) {
        arr.push(arrayBuf[i]);
    }
    return new Uint8Array(arr);
}
function stringToUint8Array(str: string) {
    let arr: number[] = [];
    for (let i = 0, j = str.length; i < j; ++i) {
        arr.push(str.charCodeAt(i));
    }
    return new Uint8Array(arr);
}
function assignLength(length: number, arrayBuf: Uint8Array, startIndex: number) {
    let index = startIndex;
    for (let i = 0; i < 4; i++) {
        arrayBuf[index++] = (length & mask[i]) >> (i * 8);
    }
    return 4;
}
function assignData(data: Uint8Array, arrayBuf: Uint8Array, startIndex: number) {
    let index = startIndex;
    for (let i = 0; i < data.length; i++) {
        arrayBuf[index++] = data[i];
    }
    return data.length;
}
let genWrappingKeyParams: huks.HuksOptions = {
    properties: new Array<huks.HuksParam>(
        {
            tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
            value: huks.HuksKeyAlg.HUKS_ALG_ECC
        },
        {
            tag: huks.HuksTag.HUKS_TAG_PURPOSE,
            value: huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_UNWRAP
        },
        {
            tag: huks.HuksTag.HUKS_TAG_KEY_SIZE,
            value: huks.HuksKeySize.HUKS_CURVE25519_KEY_SIZE_256
        },
        {
            tag: huks.HuksTag.HUKS_TAG_PADDING,
            value: huks.HuksKeyPadding.HUKS_PADDING_NONE
        }
    )
}
let genCallerEcdhParams:huks.HuksOptions = {
    properties: new Array<huks.HuksParam>(
        {
            tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
            value: huks.HuksKeyAlg.HUKS_ALG_ECC
        },
        {
            tag: huks.HuksTag.HUKS_TAG_PURPOSE,
            value: huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_AGREE
        },
        {
            tag: huks.HuksTag.HUKS_TAG_KEY_SIZE,
            value: huks.HuksKeySize.HUKS_CURVE25519_KEY_SIZE_256
        }
    )
}
let importParamsCallerKek: huks.HuksOptions = {
    properties: new Array<huks.HuksParam>(
        {
            tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
            value: huks.HuksKeyAlg.HUKS_ALG_AES
        },
        {
            tag: huks.HuksTag.HUKS_TAG_PURPOSE,
            value: huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_ENCRYPT
        },
        {
            tag: huks.HuksTag.HUKS_TAG_KEY_SIZE,
            value: huks.HuksKeySize.HUKS_AES_KEY_SIZE_256
        },
        {
            tag: huks.HuksTag.HUKS_TAG_PADDING,
            value: huks.HuksKeyPadding.HUKS_PADDING_NONE
        },
        {
            tag: huks.HuksTag.HUKS_TAG_BLOCK_MODE,
            value: huks.HuksCipherMode.HUKS_MODE_GCM
        },
        {
            tag: huks.HuksTag.HUKS_TAG_DIGEST,
            value: huks.HuksKeyDigest.HUKS_DIGEST_NONE
        },
        {
            tag: huks.HuksTag.HUKS_TAG_IV,
            value: stringToUint8Array(IV)
        }
    ),
    inData: stringToUint8Array(callerAes256Kek)
}
let importParamsAgreeKey: huks.HuksOptions = {
    properties: new Array<huks.HuksParam>(
        {
            tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
            value: huks.HuksKeyAlg.HUKS_ALG_AES
        },
        {
            tag: huks.HuksTag.HUKS_TAG_PURPOSE,
            value: huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_ENCRYPT
        },
        {
            tag: huks.HuksTag.HUKS_TAG_KEY_SIZE,
            value: huks.HuksKeySize.HUKS_AES_KEY_SIZE_256
        },
        {
            tag: huks.HuksTag.HUKS_TAG_PADDING,
            value: huks.HuksKeyPadding.HUKS_PADDING_NONE
        },
        {
            tag: huks.HuksTag.HUKS_TAG_BLOCK_MODE,
            value: huks.HuksCipherMode.HUKS_MODE_GCM
        },
        {
            tag: huks.HuksTag.HUKS_TAG_DIGEST,
            value: huks.HuksKeyDigest.HUKS_DIGEST_NONE
        },
        {
            tag: huks.HuksTag.HUKS_TAG_IV,
            value: stringToUint8Array(IV)
        }
    ),
}
let callerAgreeParams: huks.HuksOptions = {
    properties: new Array<huks.HuksParam>(
        {
            tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
            value: huks.HuksKeyAlg.HUKS_ALG_ECDH
        },
        {
            tag: huks.HuksTag.HUKS_TAG_PURPOSE,
            value: huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_AGREE
        },
        {
            tag: huks.HuksTag.HUKS_TAG_KEY_SIZE,
            value: huks.HuksKeySize.HUKS_CURVE25519_KEY_SIZE_256
        }
    )
}
let encryptKeyCommonParams: huks.HuksOptions = {
    properties: new Array<huks.HuksParam>(
        {
            tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
            value: huks.HuksKeyAlg.HUKS_ALG_AES
        },
        {
            tag: huks.HuksTag.HUKS_TAG_PURPOSE,
            value: huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_ENCRYPT
        },
        {
            tag: huks.HuksTag.HUKS_TAG_KEY_SIZE,
            value: huks.HuksKeySize.HUKS_AES_KEY_SIZE_256
        },
        {
            tag: huks.HuksTag.HUKS_TAG_PADDING,
            value: huks.HuksKeyPadding.HUKS_PADDING_NONE
        },
        {
            tag: huks.HuksTag.HUKS_TAG_BLOCK_MODE,
            value: huks.HuksCipherMode.HUKS_MODE_GCM
        },
        {
            tag: huks.HuksTag.HUKS_TAG_NONCE,
            value: stringToUint8Array(NONCE)
        },
        {
            tag: huks.HuksTag.HUKS_TAG_ASSOCIATED_DATA,
            value: stringToUint8Array(AAD)
        }
    ),
}
let importWrappedAes192Params: huks.HuksOptions = {
    properties: new Array<huks.HuksParam>(
        {
            tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
            value: huks.HuksKeyAlg.HUKS_ALG_AES
        },
        {
            tag: huks.HuksTag.HUKS_TAG_PURPOSE,
            value: huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_ENCRYPT |
            huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_DECRYPT
        },
        {
            tag: huks.HuksTag.HUKS_TAG_KEY_SIZE,
            value: huks.HuksKeySize.HUKS_AES_KEY_SIZE_192
        },
        {
            tag: huks.HuksTag.HUKS_TAG_PADDING,
            value: huks.HuksKeyPadding.HUKS_PADDING_NONE
        },
        {
            tag: huks.HuksTag.HUKS_TAG_BLOCK_MODE,
            value: huks.HuksCipherMode.HUKS_MODE_CBC
        },
        {
            tag: huks.HuksTag.HUKS_TAG_DIGEST,
            value: huks.HuksKeyDigest.HUKS_DIGEST_NONE
        },
        {
            tag: huks.HuksTag.HUKS_TAG_UNWRAP_ALGORITHM_SUITE,
            value: huks.HuksUnwrapSuite.HUKS_UNWRAP_SUITE_ECDH_AES_256_GCM_NOPADDING
        },
        {
            tag: huks.HuksTag.HUKS_TAG_IV,
            value: stringToUint8Array(IV)
        }
    )
}
async function publicGenerateItemFunc(keyAlias: string, huksOptions: huks.HuksOptions) {
    console.info(`enter promise generateKeyItem`);
    try {
        await huks.generateKeyItem(keyAlias, huksOptions)
        .then(data => {
            console.info(`promise: generateKeyItem success, data = ${JSON.stringify(data)}`);
        })
        .catch((err: BusinessError) => {
            console.error(`promise: generateKeyItem failed` + err);
            expect(null).assertFail();
        })
    } catch (err) {
        console.error(`promise: generateKeyItem invalid` + err);
        expect(null).assertFail();
    }
}
async function publicImportKeyItemFunc(keyAlias: string, HuksOptions: huks.HuksOptions) {
    console.info(`enter promise importKeyItem`);
    try {
        await huks.importKeyItem(keyAlias, HuksOptions)
        .then(data => {
            console.info(`promise: importKeyItem success, data = ${JSON.stringify(data)}`);
        }).catch((err: BusinessError) => {
            console.error(`promise: importKeyItem failed` + err);
            expect(null).assertFail();
        })
    } catch (err) {
        console.error(`promise: importKeyItem input arg invalid` + err);
        expect(null).assertFail();
    }
}
async function publicDeleteKeyItemFunc(KeyAlias: string, HuksOptions: huks.HuksOptions) {
    console.info(`enter promise deleteKeyItem`);
    try {
        await huks.deleteKeyItem(KeyAlias, HuksOptions)
        .then(data => {
            console.info(`promise: deleteKeyItem key success, data = ${JSON.stringify(data)}`);
        })
        .catch((err: BusinessError) => {
            console.error(`promise: deleteKeyItem failed` + err);
            expect(null).assertFail();
        })
    } catch (err) {
        console.error(`promise: deleteKeyItem input arg invalid` + err);
        expect(null).assertFail();
    }
}
function importWrappedKeyItem(keyAlias: string, wrappingKeyAlias: string, huksOptions: huks.HuksOptions) {
    return new Promise<void>((resolve, reject) => {
        try {
            huks.importWrappedKeyItem(keyAlias, wrappingKeyAlias, huksOptions, (error, data) => {
                if (error) {
                    reject(error);
                } else {
                    resolve(data);
                }
            });
        } catch (error) {
            expect(null).assertFail();
        }
    });
}
async function publicImportWrappedKeyFunc(keyAlias: string, wrappingKeyAlias: string, huksOptions: huks.HuksOptions) {
    console.info(`enter promise importWrappedKeyItem`);
    for (let i = 0; i < huksOptions.inData!.length; i++) {
        console.error(`${i}: ${huksOptions.inData![i]}`);
    }
    try {
        await importWrappedKeyItem(keyAlias, wrappingKeyAlias, huksOptions)
        .then((data) => {
            console.info(`promise: importWrappedKeyItem success, data = ${JSON.stringify(data)}`);
        })
        .catch((error: BusinessError) => {
            console.error(`promise: importWrappedKeyItem failed` + error);
            expect(null).assertFail();
        });
    } catch (error) {
        console.error(`promise: importWrappedKeyItem input arg invalid` + error);
        expect(null).assertFail();
    }
}
async function publicImportWrappedKeyPromise(keyAlias: string, wrappingKeyAlias: string, huksOptions: huks.HuksOptions) {
    console.info(`enter promise importWrappedKeyItem`);
    try {
        await huks.importWrappedKeyItem(keyAlias, wrappingKeyAlias, huksOptions)
        .then((data) => {
            console.info(`promise: importWrappedKeyItem success, data = ${JSON.stringify(data)}`);
        })
        .catch((error: BusinessError) => {
            console.error(`promise: importWrappedKeyItem failed` + error);
            expect(null).assertFail();
        });
    } catch (error) {
        console.error(`promise: importWrappedKeyItem input arg invalid` + error);
        expect(null).assertFail();
    }
}
async function publicInitFunc(srcKeyAlias: string, HuksOptions: huks.HuksOptions) {
    let handle: number = 0;
    console.info(`enter promise doInit`);
    try {
        await huks.initSession(srcKeyAlias, HuksOptions)
        .then((data) => {
            console.info(`promise: doInit success, data = ${JSON.stringify(data)}`);
            handle = data.handle;
        })
        .catch((error: BusinessError) => {
            console.error(`promise: doInit key failed` + error);
            expect(null).assertFail();
        });
    } catch (error) {
        console.error(`promise: doInit input arg invalid` + error);
        expect(null).assertFail();
    }
    return handle;
}
async function publicUpdateSessionFunction(handle: number, HuksOptions: huks.HuksOptions) {
    const maxUpdateSize = 64;
    const inData = HuksOptions.inData!;
    const lastInDataPosition = inData.length - 1;
    let inDataSegSize = maxUpdateSize;
    let inDataSegPosition = 0;
    let isFinished = false;
    let outData: number[] = [];

    while (inDataSegPosition <= lastInDataPosition) {
        if (inDataSegPosition + maxUpdateSize > lastInDataPosition) {
            isFinished = true;
            inDataSegSize = lastInDataPosition - inDataSegPosition + 1;
            console.info(`enter promise doUpdate`);
            break;
        }
        HuksOptions.inData = new Uint8Array(
           Array.from(inData).slice(inDataSegPosition, inDataSegPosition + inDataSegSize)
        );
        console.info(`enter promise doUpdate`);
        try {
            await huks.updateSession(handle, HuksOptions)
            .then((data) => {
                console.error(`promise: doUpdate success, data = ${JSON.stringify(data)}`);
                outData = outData.concat(Array.from(data.outData!));
            })
            .catch((error: BusinessError) => {
                console.error(`promise: doUpdate failed` + error);
                expect(null).assertFail();
            });
        } catch (error) {
            console.error(`promise: doUpdate input arg invalid` + error);
            expect(null).assertFail();
        }
        if ((!isFinished) && (inDataSegPosition + maxUpdateSize > lastInDataPosition)) {
            console.log(`update size invalid isFinished = ${isFinished}`);
            console.log(`inDataSegPosition = ${inDataSegPosition}`);
            console.log(`lastInDataPosition = ${lastInDataPosition}`);
            expect(null).assertFail();
            return;
        }
        inDataSegPosition += maxUpdateSize;
    }
    return outData;
}
async function publicFinishSession(handle: number, HuksOptions: huks.HuksOptions, inData: number[]) {
    let outData: number[] = [];
    console.info(`enter promise doFinish`);
    try {
        await huks.finishSession(handle, HuksOptions)
        .then((data) => {
            console.info(`promise: doFinish success, data = ${JSON.stringify(data)}`);
            outData = inData.concat(Array.from(data.outData!));
        })
        .catch((error: BusinessError) => {
            console.error(`promise: doFinish key failed` + error);
            expect(null).assertFail();
        });
    } catch (error) {
        console.error(`promise: doFinish input arg invalid` + error);
        expect(null).assertFail();
    }
    return new Uint8Array(outData);
}
async function cipherFunction(keyAlias: string, HuksOptions: huks.HuksOptions) {
    let handle = await publicInitFunc(keyAlias, HuksOptions);
    let tmpData = await publicUpdateSessionFunction(handle, HuksOptions);
    let outData = await publicFinishSession(handle, HuksOptions, tmpData!);
    return outData;
}
async function agreeFunction(keyAlias: string, HuksOptions: huks.HuksOptions, huksPublicKey: Uint8Array) {
    let handle = await publicInitFunc(keyAlias, HuksOptions);
    let outSharedKey: Uint8Array = new Uint8Array;
    HuksOptions.inData = huksPublicKey;
    console.info(`enter promise doUpdate`);
    try {
        await huks.updateSession(handle, HuksOptions)
        .then((data) => {
            console.error(`promise: doUpdate success, data = ${JSON.stringify(data)}`);
        })
        .catch((error: BusinessError) => {
            console.error(`promise: doUpdate failed` + error);
            expect(null).assertFail();
        });
    } catch (error) {
        console.error(`promise: doUpdate input arg invalid` + error);
        expect(null).assertFail();
    }
    console.info(`enter promise doInit`);
    try {
        await huks.finishSession(handle, HuksOptions)
        .then((data) => {
            console.info(`promise: doInit success, data = ${JSON.stringify(data)}`);
            outSharedKey = data.outData as Uint8Array;
        })
        .catch((error: BusinessError) => {
            console.error(`promise: doInit key failed` + error);
            expect(null).assertFail();
        });
    } catch (error) {
        console.error(`promise: doInit input arg invalid` + error);
        expect(null).assertFail();
    }
    return outSharedKey;
}
async function ImportKekAndAgreeSharedSecret(callerKekAlias: string, importKekParams: huks.HuksOptions, callerKeyAlias: string, huksPublicKey: Uint8Array, agreeParams: huks.HuksOptions) {
    await publicImportKeyItemFunc(callerKekAlias, importKekParams);
    outSharedKey = await agreeFunction(callerKeyAlias, agreeParams, huksPublicKey);
    importParamsAgreeKey.inData = outSharedKey;
    await publicImportKeyItemFunc(callerAgreeKeyAliasAes256, importParamsAgreeKey);
}
async function generateAndExportPublicKey(keyAlias: string, HuksOptions: huks.HuksOptions, caller: Boolean) {
    await publicGenerateItemFunc(keyAlias, HuksOptions);
    try {
        await huks.exportKeyItem(keyAlias, HuksOptions)
        .then((data) => {
            console.info(`promise: exportKeyItem success, data = ${JSON.stringify(data)}`);
            if (caller) {
                callerSelfPublicKey = data.outData as Uint8Array;
            } else {
                huksPubKey = data.outData as Uint8Array;
            }
        })
        .catch((error: BusinessError) => {
            console.error(`promise: exportKeyItem failed` + error);
            expect(null).assertFail();
        });
    } catch (error) {
        console.error(`promise: generate pubKey failed` + error);
        expect(null).assertFail();
    }
}
async function EncryptImportedPlainKeyAndKek(keyAlias: string) {
    encryptKeyCommonParams.inData = stringToUint8Array(keyAlias)
    let plainKeyEncData = await cipherFunction(callerKekAliasAes256, encryptKeyCommonParams);
    outKekEncTag = subUint8ArrayOf(plainKeyEncData, plainKeyEncData.length - TAG_SIZE, plainKeyEncData.length)
    outPlainKeyEncData = subUint8ArrayOf(plainKeyEncData, 0, plainKeyEncData.length - TAG_SIZE)
    encryptKeyCommonParams.inData = stringToUint8Array(callerAes256Kek)
    let kekEncData = await cipherFunction(callerAgreeKeyAliasAes256, encryptKeyCommonParams)
    outAgreeKeyEncTag = subUint8ArrayOf(kekEncData, kekEncData.length - TAG_SIZE, kekEncData.length)
    outKekEncData = subUint8ArrayOf(kekEncData, 0, kekEncData.length - TAG_SIZE)
}
async function BuildWrappedDataAndImportWrappedKey(plainKey: string) {
    let plainKeySizeBuff = new Uint8Array(4);
    assignLength(plainKey.length, plainKeySizeBuff, 0);
    let wrappedData = new Uint8Array(
        FILED_LENGTH + huksPubKey.length +
        FILED_LENGTH + AAD.length +
        FILED_LENGTH + NONCE.length +
        FILED_LENGTH + TAG_SIZE +
        FILED_LENGTH + outKekEncData.length +
        FILED_LENGTH + AAD.length +
        FILED_LENGTH + NONCE.length +
        FILED_LENGTH + TAG_SIZE +
        FILED_LENGTH + plainKeySizeBuff.length +
        FILED_LENGTH + outPlainKeyEncData.length
    );
    let index = 0;
    let AADUint8Array = stringToUint8Array(AAD);
    let NonceArray = stringToUint8Array(NONCE);
    index += assignLength(callerSelfPublicKey.length, wrappedData, index);  // 4
    index += assignData(callerSelfPublicKey, wrappedData, index); // 91
    index += assignLength(AADUint8Array.length, wrappedData, index); // 4
    index += assignData(AADUint8Array, wrappedData, index); // 16
    index += assignLength(NonceArray.length, wrappedData, index); // 4
    index += assignData(NonceArray, wrappedData, index); // 12
    index += assignLength(outAgreeKeyEncTag.length, wrappedData, index); // 4
    index += assignData(outAgreeKeyEncTag, wrappedData, index); // 16
    index += assignLength(outKekEncData.length, wrappedData, index); // 4
    index += assignData(outKekEncData, wrappedData, index); // 32
    index += assignLength(AADUint8Array.length, wrappedData, index); // 4
    index += assignData(AADUint8Array, wrappedData, index); // 16
    index += assignLength(NonceArray.length, wrappedData, index); // 4
    index += assignData(NonceArray, wrappedData, index); // 12
    index += assignLength(outKekEncTag.length, wrappedData, index); // 4
    index += assignData(outKekEncTag, wrappedData, index); // 16
    index += assignLength(plainKeySizeBuff.length, wrappedData, index); // 4
    index += assignData(plainKeySizeBuff, wrappedData, index); // 4
    index += assignLength(outPlainKeyEncData.length, wrappedData, index); // 4
    index += assignData(outPlainKeyEncData, wrappedData, index); // 24
    return wrappedData;
}
/* 模拟加密导入密钥场景，设备A为远端设备（导入设备），设备B为本端设备（被导入设备） */
async function ImportWrappedKey() {
    /**
     * 1.设备A将待导入密钥转换成HUKS密钥材料格式To_Import_Key（仅针对非对称密钥，若待导入密钥是对称密钥则可省略此步骤），
     *   本示例使用importedAes256PlainKey（对称密钥）作为模拟
     */

    /* 2.设备B生成一个加密导入用途的、用于协商的非对称密钥对Wrapping_Key（公钥Wrapping_Pk，私钥Wrapping_Sk），其密钥用途设置为unwrap，导出Wrapping_Key公钥Wrapping_Pk存放在变量huksPubKey中 */
    const srcKeyAliasWrap = 'HUKS_Basic_Capability_Import_0200';
    await generateAndExportPublicKey(srcKeyAliasWrap, genWrappingKeyParams, false);

    /* 3.设备A使用和设备B同样的算法，生成一个加密导入用途的、用于协商的非对称密钥对Caller_Key（公钥Caller_Pk，私钥Caller_Sk），导出Caller_Key公钥Caller_Pk存放在变量callerSelfPublicKey中 */
    await generateAndExportPublicKey(callerKeyAlias, genCallerEcdhParams, true);

    /**
     * 4.设备A生成一个对称密钥Caller_Kek，该密钥后续将用于加密To_Import_Key
     * 5.设备A基于Caller_Key的私钥Caller_Sk和Wrapping_Key的公钥Wrapping_Pk，协商出Shared_Key
     */
    await ImportKekAndAgreeSharedSecret(callerKekAliasAes256, importParamsCallerKek, callerKeyAlias, huksPubKey, callerAgreeParams);

    /**
     * 6.设备A使用Caller_Kek加密To_Import_Key，生成To_Import_Key_Enc
     * 7.设备A使用Shared_Key加密Caller_Kek，生成Caller_Kek_Enc
     */
    await EncryptImportedPlainKeyAndKek(importedAes192PlainKey);

    /* 8.设备A封装Caller_Pk、To_Import_Key_Enc、Caller_Kek_Enc等加密导入的材料并发送给设备B。本示例作为变量存放在callerSelfPublicKey，PlainKeyEncData，KekEncData */
    let wrappedData = await BuildWrappedDataAndImportWrappedKey(importedAes192PlainKey);
    importWrappedAes192Params.inData = wrappedData;

    /* 9.设备B导入封装的加密密钥材料 */
    await publicImportWrappedKeyFunc(importedKeyAliasAes192, srcKeyAliasWrap, importWrappedAes192Params);

    /* 10.设备A、B删除用于加密导入的密钥 */
    await publicDeleteKeyItemFunc(srcKeyAliasWrap, genWrappingKeyParams);
    await publicDeleteKeyItemFunc(callerKeyAlias, genCallerEcdhParams);
    await publicDeleteKeyItemFunc(importedKeyAliasAes192, importWrappedAes192Params);
    await publicDeleteKeyItemFunc(callerKekAliasAes256, callerAgreeParams);
}

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';
/*
 * 确定密钥别名和封装密钥属性参数集
 */
let keyAlias = 'test_import_key_ecdh_aes192';
let isKeyExist:Boolean;
let keyProperties: Array<huks.HuksParam> = new Array();
keyProperties[0] = {
    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);
}