如何使用RSA公钥加密明文数据

import { buffer, util } from '@kit.ArkTS';
import { cryptoFramework } from '@kit.CryptoArchitectureKit';
/**
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*/
export async function encryptRSA(message: string) {
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let pubKeyStr = "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDFQArGDm5BXM4jHHuZGIb/kUoqrSjXkjqPLgrDmqBFxNyYsyxvyFRO10nStQwdRkQkh5lZ5sqC1G/z6lyDPpEySTBo9S5GLZ2Tj4yinNjcMXmOwiHfyQAQo9LwdlyTedwRchg0fYewWBVTVhGcWPowT1aA+GnQhYwNmaS/iKQsNQIDAQAB";
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let base64Helper = new util.Base64Helper();
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let pubKeyBlob: cryptoFramework.DataBlob = { data: base64Helper.decodeSync(pubKeyStr) };
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let rsaGenerator = cryptoFramework.createAsyKeyGenerator('RSA1024');
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let keyPair = await rsaGenerator.convertKey(pubKeyBlob, null);
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let cipher = cryptoFramework.createCipher('RSA1024|PKCS1');
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await cipher.init(cryptoFramework.CryptoMode.ENCRYPT_MODE, keyPair.pubKey, null);
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let plainTextBlob: cryptoFramework.DataBlob = { data: new Uint8Array(buffer.from(message, 'utf-8').buffer) };
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let encryptBlob = await cipher.doFinal(plainTextBlob);
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return base64Helper.encodeToStringSync(encryptBlob.data);
}
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