harmony 鸿蒙使用RSA密钥对签名验签（PSS模式）(ArkTS)
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
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。
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。
调用Sign.init，使用私钥（PriKey）初始化Sign实例。
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。
调用Sign.getSignSpec，获取其他签名参数。
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。
调用Sign.sign，生成数据签名。
验签
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。
调用Verify.setVerifySpec，设置签名参数。需要与签名时设置的保持一致。
调用Verify.init，使用公钥（PubKey）初始化Verify实例。
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。
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');
}
}
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