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1/*
2 * Copyright (c) 2025 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16import { huks } from '@kit.UniversalKeystoreKit';
17import Constants from '../constant';
18
19export default class HuksProperties {
20  public static getGenerateProperties(): huks.HuksParam[] {
21    let getGenerateProps: huks.HuksParam[] = [{
22      tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
23      value: huks.HuksKeyAlg.HUKS_ALG_ECC
24    }, {
25      tag: huks.HuksTag.HUKS_TAG_PURPOSE,
26      value: huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_SIGN | huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_VERIFY
27    }, {
28      tag: huks.HuksTag.HUKS_TAG_KEY_SIZE,
29      value: huks.HuksKeySize.HUKS_ECC_KEY_SIZE_256
30    }, {
31      tag: huks.HuksTag.HUKS_TAG_DIGEST,
32      value: huks.HuksKeyDigest.HUKS_DIGEST_SHA256
33    }];
34    return getGenerateProps;
35  }
36
37  public static getAesGenerateProperties(): huks.HuksParam[] {
38    let properties: huks.HuksParam[] = [{
39      tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
40      value: huks.HuksKeyAlg.HUKS_ALG_AES
41    }, {
42      tag: huks.HuksTag.HUKS_TAG_KEY_SIZE,
43      value: huks.HuksKeySize.HUKS_AES_KEY_SIZE_256
44    }, {
45      tag: huks.HuksTag.HUKS_TAG_PURPOSE,
46      value: huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_ENCRYPT | huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_DECRYPT
47    }];
48    return properties;
49  }
50
51  public static getAesGcmEncryptProperties(nonce: Uint8Array, aad: Uint8Array): huks.HuksParam[] {
52    let properties: huks.HuksParam[] = [{
53      tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
54      value: huks.HuksKeyAlg.HUKS_ALG_AES
55    }, {
56      tag: huks.HuksTag.HUKS_TAG_KEY_SIZE,
57      value: huks.HuksKeySize.HUKS_AES_KEY_SIZE_256
58    }, {
59      tag: huks.HuksTag.HUKS_TAG_PURPOSE,
60      value: huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_ENCRYPT
61    }, {
62      tag: huks.HuksTag.HUKS_TAG_PADDING,
63      value: huks.HuksKeyPadding.HUKS_PADDING_NONE
64    }, {
65      tag: huks.HuksTag.HUKS_TAG_BLOCK_MODE,
66      value: huks.HuksCipherMode.HUKS_MODE_GCM
67    }, {
68      tag: huks.HuksTag.HUKS_TAG_NONCE,
69      value: nonce
70    }, {
71      tag: huks.HuksTag.HUKS_TAG_ASSOCIATED_DATA,
72      value: aad
73    }];
74    return properties;
75  }
76
77  public static getAesGcmDecryptProperties(cipherData: Uint8Array, nonce: Uint8Array,
78    aad: Uint8Array): huks.HuksParam[] {
79    let properties: huks.HuksParam[] = [{
80      tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
81      value: huks.HuksKeyAlg.HUKS_ALG_AES
82    }, {
83      tag: huks.HuksTag.HUKS_TAG_KEY_SIZE,
84      value: huks.HuksKeySize.HUKS_AES_KEY_SIZE_256
85    }, {
86      tag: huks.HuksTag.HUKS_TAG_PURPOSE,
87      value: huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_DECRYPT
88    }, {
89      tag: huks.HuksTag.HUKS_TAG_PADDING,
90      value: huks.HuksKeyPadding.HUKS_PADDING_NONE
91    }, {
92      tag: huks.HuksTag.HUKS_TAG_BLOCK_MODE,
93      value: huks.HuksCipherMode.HUKS_MODE_GCM
94    }, {
95      tag: huks.HuksTag.HUKS_TAG_NONCE,
96      value: nonce
97    }, {
98      tag: huks.HuksTag.HUKS_TAG_ASSOCIATED_DATA,
99      value: aad
100    }, {
101      tag: huks.HuksTag.HUKS_TAG_AE_TAG,
102      value: cipherData.slice(cipherData.length - Constants.AE_TAG_SLICE_LENGTH)
103    }];
104    return properties;
105  }
106}