harmony 鸿蒙签名/验签(ArkTS)
签名/验签(ArkTS)
当前指导共提供四种示例,供开发者参考完成签名、验签开发:
- 密钥算法为ECC256、摘要算法为SHA256
- 密钥算法为SM2、摘要算法为SM3
- 密钥算法为RSA、摘要算法为SHA256、填充模式为PSS
- 密钥算法为RSA、摘要算法为SHA256、填充模式为PKCS1_V1_5
具体的场景介绍及支持的算法规格,请参考签名/验签支持的算法。
开发步骤
生成密钥
指定密钥别名。
初始化密钥属性集。
调用generateKeyItem生成密钥,具体请参考密钥生成。
除此之外,开发者也可以参考密钥导入,导入已有的密钥。
签名
获取密钥别名。
指定待签名的明文数据。
获取属性参数HuksOptions,包括两个字段properties和inData。inData传入明文数据,properties传入算法参数配置。
调用initSession初始化密钥会话,并获取会话的句柄handle。
调用finishSession结束密钥会话,获取签名signature。
验签
获取密钥别名。
获取待验证的签名signature。
获取属性参数HuksOptions,包括两个字段properties和inData。inData传入签名signature,properties传入算法参数配置。
调用initSession初始化密钥会话,并获取会话的句柄handle。
调用updateSession更新密钥会话。
调用finishSession结束密钥会话,验证签名。
删除密钥
当密钥废弃不用时,需要调用deleteKeyItem删除密钥,具体请参考密钥删除。
开发案例
ECC256/SHA256
/*
* 密钥算法为ECC256、摘要算法为SHA256
*/
import { huks } from '@kit.UniversalKeystoreKit';
let keyAlias = 'test_eccKeyAlias';
let handle: number;
let plaintext = '123456';
let signature: Uint8Array;
function StringToUint8Array(str: String) {
let arr: number[] = new Array();
for (let i = 0, j = str.length; i < j; ++i) {
arr.push(str.charCodeAt(i));
}
return new Uint8Array(arr);
}
function Uint8ArrayToString(fileData: Uint8Array) {
let dataString = '';
for (let i = 0; i < fileData.length; i++) {
dataString += String.fromCharCode(fileData[i]);
}
return dataString;
}
function GetEccGenerateProperties() {
let properties: Array<huks.HuksParam> = [{
tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
value: huks.HuksKeyAlg.HUKS_ALG_ECC
}, {
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_SIGN|
huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_VERIFY
}, {
tag: huks.HuksTag.HUKS_TAG_DIGEST,
value: huks.HuksKeyDigest.HUKS_DIGEST_SHA256
}];
return properties;
}
function GetEccSignProperties() {
let properties: Array<huks.HuksParam> = [{
tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
value: huks.HuksKeyAlg.HUKS_ALG_ECC
}, {
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_SIGN
}, {
tag: huks.HuksTag.HUKS_TAG_DIGEST,
value: huks.HuksKeyDigest.HUKS_DIGEST_SHA256
}];
return properties;
}
function GetEccVerifyProperties() {
let properties: Array<huks.HuksParam> = [{
tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
value: huks.HuksKeyAlg.HUKS_ALG_ECC
}, {
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_VERIFY
}, {
tag: huks.HuksTag.HUKS_TAG_DIGEST,
value: huks.HuksKeyDigest.HUKS_DIGEST_SHA256
}];
return properties;
}
async function GenerateEccKey(keyAlias: string) {
let genProperties = GetEccGenerateProperties();
let options: huks.HuksOptions = {
properties: genProperties
}
await huks.generateKeyItem(keyAlias, options)
.then((data) => {
console.info(`promise: generate ECC Key success, data = ${JSON.stringify(data)}`);
}).catch((err: Error) => {
console.error(`promise: generate ECC Key failed, error: ` + JSON.stringify(err));
})
}
async function Sign(keyAlias: string, plaintext: string) {
let signProperties = GetEccSignProperties();
let options: huks.HuksOptions = {
properties: signProperties,
inData: StringToUint8Array(plaintext)
}
await huks.initSession(keyAlias, options)
.then((data) => {
handle = data.handle;
}).catch((err: Error) => {
console.error(`promise: init sign failed, error: ` + JSON.stringify(err));
})
await huks.finishSession(handle, options)
.then((data) => {
console.info(`promise: sign success, data is ` + Uint8ArrayToString(data.outData as Uint8Array));
signature = data.outData as Uint8Array;
}).catch((err: Error) => {
console.error(`promise: sign failed, error: ` + JSON.stringify(err));
})
}
async function Verify(keyAlias: string, plaintext: string, signature: Uint8Array) {
let verifyProperties = GetEccVerifyProperties()
let options: huks.HuksOptions = {
properties: verifyProperties,
inData: StringToUint8Array(plaintext)
}
await huks.initSession(keyAlias, options)
.then((data) => {
handle = data.handle;
}).catch((err: Error) => {
console.error(`promise: init verify failed, error: ` + JSON.stringify(err));
})
await huks.updateSession(handle, options)
.then((data) => {
console.info(`promise: update verify success, data is ` + Uint8ArrayToString(data.outData as Uint8Array));
}).catch((err: Error) => {
console.error(`promise: update verify failed, error: ` + JSON.stringify(err));
})
options.inData = signature;
await huks.finishSession(handle, options)
.then((data) => {
console.info(`promise: verify success, data is ` + Uint8ArrayToString(data.outData as Uint8Array));
}).catch((err: Error) => {
console.error(`promise: verify failed, error: ` + JSON.stringify(err));
})
}
async function DeleteEccKey(keyAlias: string) {
let emptyOptions: huks.HuksOptions = {
properties: []
}
await huks.deleteKeyItem(keyAlias, emptyOptions)
.then((data) => {
console.info(`promise: delete data success`);
}).catch((err: Error) => {
console.error(`promise: delete data failed`);
})
}
async function testSignVerify() {
await GenerateEccKey(keyAlias);
await Sign(keyAlias, plaintext);
await Verify(keyAlias, plaintext, signature);
await DeleteEccKey(keyAlias);
}
SM2/SM3
/*
* 密钥算法为SM2、摘要算法为SM3
*/
import { huks } from '@kit.UniversalKeystoreKit';
let keyAlias = 'test_sm2KeyAlias';
let handle: number;
let plaintext = '123456';
let signature: Uint8Array;
function StringToUint8Array(str: String) {
let arr: number[] = new Array();
for (let i = 0, j = str.length; i < j; ++i) {
arr.push(str.charCodeAt(i));
}
return new Uint8Array(arr);
}
function Uint8ArrayToString(fileData: Uint8Array) {
let dataString = '';
for (let i = 0; i < fileData.length; i++) {
dataString += String.fromCharCode(fileData[i]);
}
return dataString;
}
function GetSm2GenerateProperties() {
let properties: Array<huks.HuksParam> = [{
tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
value: huks.HuksKeyAlg.HUKS_ALG_SM2
}, {
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_SIGN|
huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_VERIFY
}, {
tag: huks.HuksTag.HUKS_TAG_DIGEST,
value: huks.HuksKeyDigest.HUKS_DIGEST_SM3
}];
return properties;
}
function GetSm2SignProperties() {
let properties: Array<huks.HuksParam> = [{
tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
value: huks.HuksKeyAlg.HUKS_ALG_SM2
}, {
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_SIGN
}, {
tag: huks.HuksTag.HUKS_TAG_DIGEST,
value: huks.HuksKeyDigest.HUKS_DIGEST_SM3
}];
return properties;
}
function GetSm2VerifyProperties() {
let properties: Array<huks.HuksParam> = [{
tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
value: huks.HuksKeyAlg.HUKS_ALG_SM2
}, {
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_VERIFY
}, {
tag: huks.HuksTag.HUKS_TAG_DIGEST,
value: huks.HuksKeyDigest.HUKS_DIGEST_SM3
}];
return properties;
}
async function GenerateSm2Key(keyAlias: string) {
let genProperties = GetSm2GenerateProperties();
let options: huks.HuksOptions = {
properties: genProperties
}
await huks.generateKeyItem(keyAlias, options)
.then((data) => {
console.info(`promise: generate Sm2 Key success, data = ${JSON.stringify(data)}`);
}).catch((err: Error) => {
console.error(`promise: generate Sm2 Key failed, error: ` + JSON.stringify(err));
})
}
async function Sign(keyAlias: string, plaintext: string) {
let signProperties = GetSm2SignProperties();
let options: huks.HuksOptions = {
properties: signProperties,
inData: StringToUint8Array(plaintext)
}
await huks.initSession(keyAlias, options)
.then((data) => {
handle = data.handle;
}).catch((err: Error) => {
console.error(`promise: init sign failed, error: ` + JSON.stringify(err));
})
await huks.finishSession(handle, options)
.then((data) => {
console.info(`promise: sign success, data is ` + Uint8ArrayToString(data.outData as Uint8Array));
signature = data.outData as Uint8Array;
}).catch((err: Error) => {
console.error(`promise: sign failed, error: ` + JSON.stringify(err));
})
}
async function Verify(keyAlias: string, plaintext: string, signature: Uint8Array) {
let verifyProperties = GetSm2VerifyProperties()
let options: huks.HuksOptions = {
properties: verifyProperties,
inData: StringToUint8Array(plaintext)
}
await huks.initSession(keyAlias, options)
.then((data) => {
handle = data.handle;
}).catch((err: Error) => {
console.error(`promise: init verify failed, error: ` + JSON.stringify(err));
})
await huks.updateSession(handle, options)
.then((data) => {
console.info(`promise: update verify success, data is ` + Uint8ArrayToString(data.outData as Uint8Array));
}).catch((err: Error) => {
console.error(`promise: update verify failed, error: ` + JSON.stringify(err));
})
options.inData = signature;
await huks.finishSession(handle, options)
.then((data) => {
console.info(`promise: verify success, data is ` + Uint8ArrayToString(data.outData as Uint8Array));
}).catch((err: Error) => {
console.error(`promise: verify failed, error: ` + JSON.stringify(err));
})
}
async function DeleteSm2Key(keyAlias: string) {
let emptyOptions: huks.HuksOptions = {
properties: []
}
await huks.deleteKeyItem(keyAlias, emptyOptions)
.then((data) => {
console.info(`promise: delete data success`);
}).catch((err: Error) => {
console.error(`promise: delete data failed`);
})
}
export async function testSignVerify() {
await GenerateSm2Key(keyAlias);
await Sign(keyAlias, plaintext);
await Verify(keyAlias, plaintext, signature);
await DeleteSm2Key(keyAlias);
}
RSA/SHA256/PSS
/*
* 密钥算法为RSA,摘要算法为SHA256,填充模式为PSS
*/
import { huks } from '@kit.UniversalKeystoreKit';
let keyAlias = 'test_rsaKeyAlias';
let handle: number;
let plaintext = '123456';
let signature: Uint8Array;
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 Uint8ArrayToString(fileData: Uint8Array) {
let dataString = '';
for (let i = 0; i < fileData.length; i++) {
dataString += String.fromCharCode(fileData[i]);
}
return dataString;
}
function GetRsaGenerateProperties() {
let properties: Array<huks.HuksParam> = [{
tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
value: huks.HuksKeyAlg.HUKS_ALG_RSA
}, {
tag: huks.HuksTag.HUKS_TAG_KEY_SIZE,
value: huks.HuksKeySize.HUKS_RSA_KEY_SIZE_2048
}, {
tag: huks.HuksTag.HUKS_TAG_PURPOSE,
value: huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_SIGN|
huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_VERIFY
}, {
tag: huks.HuksTag.HUKS_TAG_PADDING,
value: huks.HuksKeyPadding.HUKS_PADDING_PSS
}, {
tag: huks.HuksTag.HUKS_TAG_DIGEST,
value: huks.HuksKeyDigest.HUKS_DIGEST_SHA256
}];
return properties;
}
function GetRsaSignProperties() {
let properties: Array<huks.HuksParam> = [{
tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
value: huks.HuksKeyAlg.HUKS_ALG_RSA
}, {
tag: huks.HuksTag.HUKS_TAG_PADDING,
value: huks.HuksKeyPadding.HUKS_PADDING_PSS
}, {
tag: huks.HuksTag.HUKS_TAG_DIGEST,
value: huks.HuksKeyDigest.HUKS_DIGEST_SHA256
}, {
tag: huks.HuksTag.HUKS_TAG_PURPOSE,
value: huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_SIGN
}];
return properties;
}
function GetRsaVerifyProperties() {
let properties: Array<huks.HuksParam> = [{
tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
value: huks.HuksKeyAlg.HUKS_ALG_RSA
}, {
tag: huks.HuksTag.HUKS_TAG_PADDING,
value: huks.HuksKeyPadding.HUKS_PADDING_PSS
}, {
tag: huks.HuksTag.HUKS_TAG_DIGEST,
value: huks.HuksKeyDigest.HUKS_DIGEST_SHA256
}, {
tag: huks.HuksTag.HUKS_TAG_PURPOSE,
value: huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_VERIFY
}];
return properties;
}
async function GenerateRsaKey(keyAlias: string) {
let genProperties = GetRsaGenerateProperties();
let options: huks.HuksOptions = {
properties: genProperties
};
await huks.generateKeyItem(keyAlias, options)
.then((data) => {
console.info(`promise: generate RSA Key success, data = ${JSON.stringify(data)}`);
}).catch((err: Error) => {
console.error(`promise: generate RSA Key failed, error: ` + JSON.stringify(err));
});
}
async function Sign(keyAlias: string, plaintext: string) {
let signProperties = GetRsaSignProperties();
let options: huks.HuksOptions = {
properties: signProperties,
inData: StringToUint8Array(plaintext)
}
await huks.initSession(keyAlias, options)
.then((data) => {
handle = data.handle;
}).catch((err: Error) => {
console.error(`promise: init sign failed, error: ` + JSON.stringify(err));
return;
});
if (handle !== undefined) {
await huks.finishSession(handle, options)
.then((data) => {
console.info(`promise: sign success, data is ` + Uint8ArrayToString(data.outData as Uint8Array));
signature = data.outData as Uint8Array;
}).catch((err: Error) => {
console.error(`promise: sign failed, error: ` + JSON.stringify(err));
});
}
}
async function Verify(keyAlias: string, plaintext: string, signature: Uint8Array) {
let verifyProperties = GetRsaVerifyProperties();
let options: huks.HuksOptions = {
properties: verifyProperties,
inData: StringToUint8Array(plaintext)
}
await huks.initSession(keyAlias, options)
.then((data) => {
handle = data.handle;
}).catch((err: Error) => {
console.error(`promise: init verify failed, error: ` + JSON.stringify(err));
return;
});
if (handle !== undefined) {
await huks.updateSession(handle, options)
.then((data) => {
console.info(`promise: update verify success, data is ` + Uint8ArrayToString(data.outData as Uint8Array));
}).catch((err: Error) => {
console.error(`promise: update verify failed, error: ` + JSON.stringify(err));
});
options.inData = signature;
await huks.finishSession(handle, options)
.then((data) => {
console.info(`promise: verify success, data is ` + Uint8ArrayToString(data.outData as Uint8Array));
}).catch((err: Error) => {
console.error(`promise: verify failed, error: ` + JSON.stringify(err));
});
}
}
async function DeleteRsaKey(keyAlias: string) {
let emptyOptions: huks.HuksOptions = {
properties: []
}
await huks.deleteKeyItem(keyAlias, emptyOptions)
.then((data) => {
console.info(`promise: delete data success`);
}).catch((err: Error) => {
console.error(`promise: delete data failed`);
});
}
export async function testSignVerify() {
await GenerateRsaKey(keyAlias);
await Sign(keyAlias, plaintext);
await Verify(keyAlias, plaintext, signature);
await DeleteRsaKey(keyAlias);
}
RSA/SHA256/PKCS1_V1_5
/*
* 密钥算法为RSA,摘要算法为SHA256,填充模式为PKCS1_V1_5
*/
import { huks } from '@kit.UniversalKeystoreKit';
let keyAlias = 'test_rsaKeyAlias';
let handle: number;
let plaintext = '123456';
let signature: Uint8Array;
function StringToUint8Array(str: String) {
let arr: number[] = new Array();
for (let i = 0, j = str.length; i < j; ++i) {
arr.push(str.charCodeAt(i));
}
return new Uint8Array(arr);
}
function Uint8ArrayToString(fileData: Uint8Array) {
let dataString = '';
for (let i = 0; i < fileData.length; i++) {
dataString += String.fromCharCode(fileData[i]);
}
return dataString;
}
function GetRsaGenerateProperties() {
let properties: Array<huks.HuksParam> = [
{ tag: huks.HuksTag.HUKS_TAG_ALGORITHM, value: huks.HuksKeyAlg.HUKS_ALG_RSA },
{ tag: huks.HuksTag.HUKS_TAG_KEY_SIZE, value: huks.HuksKeySize.HUKS_RSA_KEY_SIZE_2048 },
{
tag: huks.HuksTag.HUKS_TAG_PURPOSE,
value: huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_SIGN|huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_VERIFY
},
{ tag: huks.HuksTag.HUKS_TAG_PADDING, value: huks.HuksKeyPadding.HUKS_PADDING_PKCS1_V1_5 },
{ tag: huks.HuksTag.HUKS_TAG_DIGEST, value: huks.HuksKeyDigest.HUKS_DIGEST_SHA256 }
];
return properties;
}
function GetRsaSignProperties() {
let properties: Array<huks.HuksParam> = [{
tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
value: huks.HuksKeyAlg.HUKS_ALG_RSA
}, {
tag: huks.HuksTag.HUKS_TAG_KEY_SIZE,
value: huks.HuksKeySize.HUKS_RSA_KEY_SIZE_2048
}, {
tag: huks.HuksTag.HUKS_TAG_PURPOSE,
value: huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_SIGN
}, {
tag: huks.HuksTag.HUKS_TAG_PADDING,
value: huks.HuksKeyPadding.HUKS_PADDING_PKCS1_V1_5
}, {
tag: huks.HuksTag.HUKS_TAG_DIGEST,
value: huks.HuksKeyDigest.HUKS_DIGEST_SHA256
}];
return properties;
}
function GetRsaVerifyProperties() {
let properties: Array<huks.HuksParam> = [{
tag: huks.HuksTag.HUKS_TAG_ALGORITHM,
value: huks.HuksKeyAlg.HUKS_ALG_RSA
}, {
tag: huks.HuksTag.HUKS_TAG_KEY_SIZE,
value: huks.HuksKeySize.HUKS_RSA_KEY_SIZE_2048
}, {
tag: huks.HuksTag.HUKS_TAG_PURPOSE,
value: huks.HuksKeyPurpose.HUKS_KEY_PURPOSE_VERIFY
}, {
tag: huks.HuksTag.HUKS_TAG_PADDING,
value: huks.HuksKeyPadding.HUKS_PADDING_PKCS1_V1_5
}, {
tag: huks.HuksTag.HUKS_TAG_DIGEST,
value: huks.HuksKeyDigest.HUKS_DIGEST_SHA256
}];
return properties;
}
async function GenerateRsaKey(keyAlias: string) {
let genProperties = GetRsaGenerateProperties();
let options: huks.HuksOptions = {
properties: genProperties
}
await huks.generateKeyItem(keyAlias, options)
.then((data) => {
console.info(`promise: generate RSA Key success, data = ${JSON.stringify(data)}`);
}).catch((err: Error) => {
console.error(`promise: generate RSA Key failed, error: ` + JSON.stringify(err));
})
}
async function Sign(keyAlias: string, plaintext: string) {
let signProperties = GetRsaSignProperties();
let options: huks.HuksOptions = {
properties: signProperties,
inData: StringToUint8Array(plaintext)
}
await huks.initSession(keyAlias, options)
.then((data) => {
handle = data.handle;
}).catch((err: Error) => {
console.error(`promise: init sign failed, error: ` + JSON.stringify(err));
})
await huks.finishSession(handle, options)
.then((data) => {
console.info(`promise: sign success, data is ` + Uint8ArrayToString(data.outData as Uint8Array));
signature = data.outData as Uint8Array;
}).catch((err: Error) => {
console.error(`promise: sign failed, error: ` + JSON.stringify(err));
})
}
async function Verify(keyAlias: string, plaintext: string, signature: Uint8Array) {
let verifyProperties = GetRsaVerifyProperties()
let options: huks.HuksOptions = {
properties: verifyProperties,
inData: StringToUint8Array(plaintext)
}
await huks.initSession(keyAlias, options)
.then((data) => {
handle = data.handle;
}).catch((err: Error) => {
console.error(`promise: init verify failed, error: ` + JSON.stringify(err));
})
await huks.updateSession(handle, options)
.then((data) => {
console.info(`promise: update verify success, data is ` + Uint8ArrayToString(data.outData as Uint8Array));
}).catch((err: Error) => {
console.error(`promise: update verify failed, error: ` + JSON.stringify(err));
})
options.inData = signature;
await huks.finishSession(handle, options)
.then((data) => {
console.info(`promise: verify success, data is ` + Uint8ArrayToString(data.outData as Uint8Array));
}).catch((err: Error) => {
console.error(`promise: verify failed, error: ` + JSON.stringify(err));
})
}
async function DeleteRsaKey(keyAlias: string) {
let emptyOptions: huks.HuksOptions = {
properties: []
}
await huks.deleteKeyItem(keyAlias, emptyOptions)
.then((data) => {
console.info(`promise: delete data success`);
}).catch((err: Error) => {
console.error(`promise: delete data failed`);
})
}
export async function testSignVerify() {
await GenerateRsaKey(keyAlias);
await Sign(keyAlias, plaintext);
await Verify(keyAlias, plaintext, signature);
await DeleteRsaKey(keyAlias);
}
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