jsencrypt从加密函数返回空解密字符串

问题描述

我在玩jsencrypt，发现一些非常奇怪的东西。这是我的代码。如果它们在变量中，则加密和解密有效。但是，当我使用控制台登录enc，然后将值复制到字符串中时，解密将返回null。有人知道我在做什么错吗？

const crypt = new JSEncrypt();
  crypt.setPublicKey = `-----BEGIN PUBLIC KEY-----
  MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCnL4SAkXXmeub2DccgTT4v9EQr
  vkvqPQPzRPOeIL525tQd7vg1BlgxxnoS4oDn0G3JlzqI6y/VIaZy6QrIo3s5R2A9
  IiymPkeVOih4V5QeNSAO8tmUbEX4uEFWQDyObMeyF44R7fUoyUCcC/WdKezwcJlg
  q6dXIFJOyEzwJx0MPQIDAQAB
  -----END PUBLIC KEY-----`;

  crypt.setPrivateKey = `-----BEGIN PRIVATE KEY-----
  MIICdwIBADANBgkqhkiG9w0BAQEFAASCAmEwggJdAgEAAoGBAKcvhICRdeZ65vYN
  xyBNPi/0RCu+S+o9A/NE854gvnbm1B3u+DUGWDHGehLigOfQbcmXOojrL9UhpnLp
  CsijezlHYD0iLKY+R5U6KHhXlB41IA7y2ZRsRfi4QVZAPI5sx7IXjhHt9SjJQJwL
  9Z0p7PBwmWCrp1cgUk7ITPAnHQw9AgMBAAECgYEAl4kAZrBx1wiLE3cFiAe7WCfl
  Kmj/0j6ft/5FeoxfVtJ+bOtPWnB3vBYUS8213WgUOuayDaxu3JX1kq4cMiPL6XWC
  gznYdRDrO/92E5OyOjmrAGzItDv/SIoBGv68f/kxYC989H+yd7aCqF8SfRlR0ESi
  PnLLSYZfRsB4oLeSpkECQQDZdMLOZ3uiRwBvPV79mqfmME2OpB5VssAS9GO+giF3
  c8jibpre2wV/xWZ4/ACeXmFRgejVp09JEvF2OARhgSyVAkEAxNGxzJH22E0ZT3kq
  W7L7o8mkCQVjLK99dMaagUg+VpKk+4Y02hBStLP4xnIHt7NfpQ7r+cebk3ZeH5Ep
  hO7PCQJBALcKhppxHWuKcn4wXY4BKYUkcZQ452Phk7YgyvjoVr1S0+xth6VBHU7g
  3ZHHJcoozagrPs7hB2cOL/v/yQg+EEUCQH5Ila5OkXWjsnO9qKIBq1giDvAC1ulb
  CEIfFA+TjPv7R4RjThIEmyx6tUqO68jAfMPpWRuBKZ9qOWZDu8IhgBECQCZTubwP
  zZ+9Kntj9BcoRjYYMeWK8voPzS4n1S8PK3249e7GdfX/Z7OcsvV9gYJ7CZ6W41fo
  wa3MnlkEivo3mrA=
  -----END PRIVATE KEY-----`;

  const text = "some data";
  const enc = crypt.encrypt(text);
  const dec = crypt.decrypt(enc);
  console.log('enc:',enc);
  const temp = 'EutZlbeFV2RTG8mk6xUMi/ceN1hmj/xFre+7GkmFMBX5ZTl+rpQlJfZC9uoBBO8ywoi0YceF+lXgpDlvMxUTKnK7nLjt2L4AWEBCXT5XNKdK83N4kkMgZkZocoTD/I7mBBJQ7ZHRgtMRIoPoVBKz2HhGaK2tq3U1lDtkDACuZ3k= '; 
  // temp is cut and paste from prevIoUs console log

  const dec2 = crypt.decrypt(temp);

  console.log('dec2:',dec2); // prints null

解决方法

您需要调用函数setPublicKey和setPrivateKey而不是分配它们。

由于您实际上没有设置密钥，因此先前的输出将使用其他密钥进行编码，因此为什么它不会解码。

您以前使用的加密字符串'EutZlbeFV2RTG8mk6xUMi / ceN1h ...'的示例也不会解码，因为它是使用另一个密钥编码的（可能已经丢失了）。

但是，如果您从现在开始复制和粘贴，文本将解码。

请注意，您只需设置私钥，因为私钥包含公钥参数

const crypt = new JSEncrypt();

// Set private key
crypt.setPrivateKey(`-----BEGIN PRIVATE KEY-----
  MIICdwIBADANBgkqhkiG9w0BAQEFAASCAmEwggJdAgEAAoGBAKcvhICRdeZ65vYN
  xyBNPi/0RCu+S+o9A/NE854gvnbm1B3u+DUGWDHGehLigOfQbcmXOojrL9UhpnLp
  CsijezlHYD0iLKY+R5U6KHhXlB41IA7y2ZRsRfi4QVZAPI5sx7IXjhHt9SjJQJwL
  9Z0p7PBwmWCrp1cgUk7ITPAnHQw9AgMBAAECgYEAl4kAZrBx1wiLE3cFiAe7WCfl
  Kmj/0j6ft/5FeoxfVtJ+bOtPWnB3vBYUS8213WgUOuayDaxu3JX1kq4cMiPL6XWC
  gznYdRDrO/92E5OyOjmrAGzItDv/SIoBGv68f/kxYC989H+yd7aCqF8SfRlR0ESi
  PnLLSYZfRsB4oLeSpkECQQDZdMLOZ3uiRwBvPV79mqfmME2OpB5VssAS9GO+giF3
  c8jibpre2wV/xWZ4/ACeXmFRgejVp09JEvF2OARhgSyVAkEAxNGxzJH22E0ZT3kq
  W7L7o8mkCQVjLK99dMaagUg+VpKk+4Y02hBStLP4xnIHt7NfpQ7r+cebk3ZeH5Ep
  hO7PCQJBALcKhpPxHWuKcn4wXY4BKYUkcZQ452Phk7YgyvjoVr1S0+xth6VBHU7g
  3ZHHJcoozagrPs7hB2cOL/v/yQg+EEUCQH5Ila5OkXWjsnO9qKIBq1giDvAC1ulb
  CEIfFA+TjPv7R4RjThIEmyx6tUqO68jAfMPpWRuBKZ9qOWZDu8IhgBECQCZTubwP
  zZ+9Kntj9BcoRjYYMeWK8voPzS4n1S8PK3249e7GdfX/Z7OcsvV9gYJ7CZ6W41fo
  wa3MnlkEivo3mrA=
  -----END PRIVATE KEY-----`);

const text = "some data";
const enc = crypt.encrypt(text);
const dec = crypt.decrypt(enc);
console.log('enc:',enc);
const temp = 'T9tsyIGc+fFea7GWKHiJLOVbZf3vqiVEy/qBK37hxrGlsEQWh2HgD5+76XVqkmz6yU6w77CMX3wsRtH3KeD2NY4wxsb18JwcO4yJcaFL+ZwJ7WS8PuGY4YI5UxW3v2lwkwZ2x8GO/lE25pPJ4+f5bdeM4Yk5KWt6hV3z/yXCwvc=';
const dec2 = crypt.decrypt(temp);
console.log('dec2:',dec2);

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