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GGitee修改标点符号
e14aa65d创建于 2025年3月19日历史提交

使用RSA密钥对签名验签（PSS模式）(ArkTS)

对应的算法规格请查看签名验签算法规格：RSA。

签名

  1. 调用cryptoFramework.createAsyKeyGeneratorBySpec、AsyKeyGeneratorBySpec.generateKeyPair，指定密钥参数，生成RSA非对称密钥对（KeyPair）。 如何生成RSA非对称密钥，开发者可参考下文示例，并结合非对称密钥生成和转换规格：RSA和指定密钥参数生成非对称密钥对理解，参考文档与当前示例可能存在入参差异，请在阅读时注意区分。

  2. 调用cryptoFramework.createSign，指定字符串参数'RSA|PSS|SHA256|MGF1_SHA256'，创建非对称密钥类型为不带长度的RSA、填充模式为PSS、摘要算法为SHA256、掩码算法为MGF1_SHA256的Sign实例，用于完成签名操作。

  3. 调用Sign.init，使用私钥（PriKey）初始化Sign实例。

  4. 调用Sign.setSignSpec，设置签名参数。此处设置盐值的长度（SignSpecItem.PSS_SALT_LEN_NUM）为32字节。在验签时将校验此数据。

  5. 调用Sign.getSignSpec，获取其他签名参数。

  6. 调用Sign.update，传入待签名的数据。当前单次update长度没有限制，开发者可以根据数据量判断如何调用update。

  7. 调用Sign.sign，生成数据签名。

验签

  1. 调用cryptoFramework.createVerify，指定字符串参数'RSA2048|PSS|SHA256|MGF1_SHA256'，创建非对称密钥类型为RSA2048、填充模式为PSS、摘要算法为SHA256、掩码算法为MGF1_SHA256的Verify实例，用于完成验签操作。

  2. 调用Verify.setVerifySpec，设置签名参数。需要与签名时设置的保持一致。

  3. 调用Verify.init，使用公钥（PubKey）初始化Verify实例。

  4. 调用Verify.update，传入待验证的数据。当前单次update长度没有限制，开发者可以根据数据量判断如何调用update。

  5. 调用Verify.verify，对数据进行验签。

  • 异步方法示例：

    import { cryptoFramework } from '@kit.CryptoArchitectureKit';
import { buffer } from '@kit.ArkTS';
// 根据密钥参数属性构造RSA非对称密钥对密钥参数。
function genRsaKeyPairSpec(nIn: bigint, eIn: bigint, dIn: bigint) {
  let rsaCommSpec: cryptoFramework.RSACommonParamsSpec = {
    n: nIn,
    algName: "RSA",
    specType: cryptoFramework.AsyKeySpecType.COMMON_PARAMS_SPEC
  };
  let rsaKeyPairSpec: cryptoFramework.RSAKeyPairSpec = {
    params: rsaCommSpec,
    sk: dIn,
    pk: eIn,
    algName: "RSA",
    specType: cryptoFramework.AsyKeySpecType.KEY_PAIR_SPEC
  };
  return rsaKeyPairSpec;
}
// 生成RSA2048密钥对参数。
function genRsa2048KeyPairSpec(): cryptoFramework.RSAKeyPairSpec {
  let nIn = BigInt("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");
  let eIn = BigInt("0x010001");
  let dIn = BigInt("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");
  return genRsaKeyPairSpec(nIn, eIn, dIn);
}

async function verifyMessagePSS() {
  // 完整的明文被拆分为input1和input2。
  let plan1 = "This is Sign test plan1";
  let plan2 = "This is Sign test plan2";
  let input1: cryptoFramework.DataBlob = { data: new Uint8Array(buffer.from(plan1, 'utf-8').buffer) };
  let input2: cryptoFramework.DataBlob = { data: new Uint8Array(buffer.from(plan2, 'utf-8').buffer) };
  // 获得RSA密钥对密钥参数对象。
  let rsaKeyPairSpec = genRsa2048KeyPairSpec();
  // 构造RSA密钥对生成器。
  let rsaGeneratorSpec = cryptoFramework.createAsyKeyGeneratorBySpec(rsaKeyPairSpec);
  // sign和verfiy均支持RSA密钥带长度/不带长度的写法。
  let signer = cryptoFramework.createSign("RSA|PSS|SHA256|MGF1_SHA256");
  let verifyer = cryptoFramework.createVerify("RSA2048|PSS|SHA256|MGF1_SHA256");
  let keyPair = await rsaGeneratorSpec.generateKeyPair();
  await signer.init(keyPair.priKey);
  // 在签名初始化后，对PSS参数进行set和get操作。
  let setN = 32;
  signer.setSignSpec(cryptoFramework.SignSpecItem.PSS_SALT_LEN_NUM, setN);
  let saltLen = signer.getSignSpec(cryptoFramework.SignSpecItem.PSS_SALT_LEN_NUM);
  console.info("SaltLen == " + saltLen);
  let tf = signer.getSignSpec(cryptoFramework.SignSpecItem.PSS_TRAILER_FIELD_NUM);
  console.info("trailer field == " + tf);
  let md = signer.getSignSpec(cryptoFramework.SignSpecItem.PSS_MD_NAME_STR);
  console.info("md == " + md);
  let mgf = signer.getSignSpec(cryptoFramework.SignSpecItem.PSS_MGF_NAME_STR);
  console.info("mgf == " + mgf);
  let mgf1Md = signer.getSignSpec(cryptoFramework.SignSpecItem.PSS_MGF1_MD_STR);
  console.info("mgf1Md == " + mgf1Md);
  await signer.update(input1);
  let signMessageBlob = await signer.sign(input2);
  // 在验签初始化前，对PSS参数进行set和get操作。
  verifyer.setVerifySpec(cryptoFramework.SignSpecItem.PSS_SALT_LEN_NUM, setN);
  saltLen = verifyer.getVerifySpec(cryptoFramework.SignSpecItem.PSS_SALT_LEN_NUM);
  console.info("SaltLen == " + saltLen);
  tf = verifyer.getVerifySpec(cryptoFramework.SignSpecItem.PSS_TRAILER_FIELD_NUM);
  console.info("trailer field == " + tf);
  md = verifyer.getVerifySpec(cryptoFramework.SignSpecItem.PSS_MD_NAME_STR);
  console.info("md == " + md);
  mgf = verifyer.getVerifySpec(cryptoFramework.SignSpecItem.PSS_MGF_NAME_STR);
  console.info("mgf == " + mgf);
  mgf1Md = verifyer.getVerifySpec(cryptoFramework.SignSpecItem.PSS_MGF1_MD_STR);
  await verifyer.init(keyPair.pubKey);
  await verifyer.update(input1);
  let verifyResult = await verifyer.verify(input2, signMessageBlob);
  if (verifyResult === true) {
    console.info('verify success');
  } else {
    console.error('verify failed');
  }
}

  • 同步方法示例：

    import { cryptoFramework } from '@kit.CryptoArchitectureKit';
import { buffer } from '@kit.ArkTS';
// 根据密钥参数属性构造RSA非对称密钥对密钥参数。
function genRsaKeyPairSpec(nIn: bigint, eIn: bigint, dIn: bigint) {
  let rsaCommSpec: cryptoFramework.RSACommonParamsSpec = {
    n: nIn,
    algName: "RSA",
    specType: cryptoFramework.AsyKeySpecType.COMMON_PARAMS_SPEC
  };
  let rsaKeyPairSpec: cryptoFramework.RSAKeyPairSpec = {
    params: rsaCommSpec,
    sk: dIn,
    pk: eIn,
    algName: "RSA",
    specType: cryptoFramework.AsyKeySpecType.KEY_PAIR_SPEC
  };
  return rsaKeyPairSpec;
}
// 生成RSA2048密钥对参数。
function genRsa2048KeyPairSpec(): cryptoFramework.RSAKeyPairSpec {
  let nIn = BigInt("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");
  let eIn = BigInt("0x010001");
  let dIn = BigInt("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");
  return genRsaKeyPairSpec(nIn, eIn, dIn);
}

function verifyMessagePSS() {
  // 完整的明文被拆分为input1和input2。
  let plan1 = "This is Sign test plan1";
  let plan2 = "This is Sign test plan2";
  let input1: cryptoFramework.DataBlob = { data: new Uint8Array(buffer.from(plan1, 'utf-8').buffer) };
  let input2: cryptoFramework.DataBlob = { data: new Uint8Array(buffer.from(plan2, 'utf-8').buffer) };
  // 获得RSA密钥对密钥参数对象。
  let rsaKeyPairSpec = genRsa2048KeyPairSpec();
  // 构造RSA密钥对生成器。
  let rsaGeneratorSpec = cryptoFramework.createAsyKeyGeneratorBySpec(rsaKeyPairSpec);
  // sign和verfiy均支持RSA密钥带长度/不带长度的写法。
  let signer = cryptoFramework.createSign("RSA|PSS|SHA256|MGF1_SHA256");
  let verifyer = cryptoFramework.createVerify("RSA2048|PSS|SHA256|MGF1_SHA256");
  let keyPair = rsaGeneratorSpec.generateKeyPairSync();
  signer.initSync(keyPair.priKey);
  // 在签名初始化后，对PSS参数进行set和get操作。
  let setN = 32;
  signer.setSignSpec(cryptoFramework.SignSpecItem.PSS_SALT_LEN_NUM, setN);
  let saltLen = signer.getSignSpec(cryptoFramework.SignSpecItem.PSS_SALT_LEN_NUM);
  console.info("SaltLen == " + saltLen);
  let tf = signer.getSignSpec(cryptoFramework.SignSpecItem.PSS_TRAILER_FIELD_NUM);
  console.info("trailer field == " + tf);
  let md = signer.getSignSpec(cryptoFramework.SignSpecItem.PSS_MD_NAME_STR);
  console.info("md == " + md);
  let mgf = signer.getSignSpec(cryptoFramework.SignSpecItem.PSS_MGF_NAME_STR);
  console.info("mgf == " + mgf);
  let mgf1Md = signer.getSignSpec(cryptoFramework.SignSpecItem.PSS_MGF1_MD_STR);
  console.info("mgf1Md == " + mgf1Md);
  signer.updateSync(input1);
  let signMessageBlob = signer.signSync(input2);
  // 在验签初始化前，对PSS参数进行set和get操作。
  verifyer.setVerifySpec(cryptoFramework.SignSpecItem.PSS_SALT_LEN_NUM, setN);
  saltLen = verifyer.getVerifySpec(cryptoFramework.SignSpecItem.PSS_SALT_LEN_NUM);
  console.info("SaltLen == " + saltLen);
  tf = verifyer.getVerifySpec(cryptoFramework.SignSpecItem.PSS_TRAILER_FIELD_NUM);
  console.info("trailer field == " + tf);
  md = verifyer.getVerifySpec(cryptoFramework.SignSpecItem.PSS_MD_NAME_STR);
  console.info("md == " + md);
  mgf = verifyer.getVerifySpec(cryptoFramework.SignSpecItem.PSS_MGF_NAME_STR);
  console.info("mgf == " + mgf);
  mgf1Md = verifyer.getVerifySpec(cryptoFramework.SignSpecItem.PSS_MGF1_MD_STR);
  verifyer.initSync(keyPair.pubKey);
  verifyer.updateSync(input1);
  let verifyResult = verifyer.verifySync(input2, signMessageBlob);
  if (verifyResult === true) {
    console.info('verify success');
  } else {
    console.error('verify failed');
  }
}