harmony 鸿蒙Signing and Signature Verification (ArkTS)

  • 2025-06-12
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Signing and Signature Verification (ArkTS)

This topic provides signing and signature verification development cases with the following algorithms:

For details about the scenarios and supported algorithms, see Supported Algorithms.

How to Develop

Key Generation

  1. Set the key alias.

  2. Initialize the key property set.

  3. Use generateKeyItem to generate a key. For details, see Key Generation.

Alternatively, you can import a key.

Signing

  1. Obtain the key alias.

  2. Obtain the plaintext to be signed.

  3. Obtain HuksOptions, which include the properties and inData fields. Pass in the plaintext to be signed in inData, and algorithm parameters in properties.

  4. Use initSession to initialize a key session. The session handle is returned after the initialization.

  5. Use finishSession to generate a signature.

Signature Verification

  1. Obtain the key alias.

  2. Obtain the signature to be verified.

  3. Obtain HuksOptions, which include the properties and inData fields. Pass in the signature in inData, and algorithm parameters in properties.

  4. Use initSession to initialize a key session. The session handle is returned after the initialization.

  5. Use updateSession to process data.

  6. Use finishSession to finish signature verification.

Key Deletion

Use deleteKeyItem to delete the key that is not required. For details, see Deleting a Key.

Development Cases

ECC256/SHA256

/*
 * Key algorithm ECC256 and digest algorithm SHA-256 are used.
 */
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

/*
 * The key algorithm SM2 and digest algorithm SM3 are used.
 */
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

/*
 * The key algorithm RSA, digest algorithm SHA-256, and padding mode PSS are used.
 */
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

/*
 * The key algorithm RSA, digest algorithm SHA-256, and padding mode PKCS #1 v1.5 are used.
 */
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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