我已经看到了许多类似的问题,但对我而言,没有任何效果。我只是想将从服务器检索到的PEM格式的RSA公钥转换为PublicKeyAndroid中的。谁能指出我正确的方向?
PublicKey
编辑:我已经成功使用以下代码将PEM转换为PublicKey,但是在编码消息后,我得到了意外的输出…
public PublicKey getFromString(String keystr) throws Exception { // Remove the first and last lines String pubKeyPEM = keystr.replace("-----BEGIN PUBLIC KEY-----\n", ""); pubKeyPEM = pubKeyPEM.replace("-----END PUBLIC KEY-----", ""); // Base64 decode the data byte [] encoded = Base64.decode(pubKeyPEM); X509EncodedKeySpec keySpec = new X509EncodedKeySpec(encoded); KeyFactory kf = KeyFactory.getInstance("RSA"); PublicKey pubkey = kf.generatePublic(keySpec); return pubkey; } public String RSAEncrypt(final String plain) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException, IOException { if (pubKey!=null) { cipher = Cipher.getInstance("RSA"); cipher.init(Cipher.ENCRYPT_MODE, pubKey); encryptedBytes = cipher.doFinal(plain.getBytes()); Log.d("BYTES", new String(encryptedBytes)); return Hex.encodeHexString(encryptedBytes); } else return null; }
输出如下所示:
b6813f8791d67c0fa82890d005c8ff554b57143b752b34784ad271ec01bfaa9a6a31e7ae08444baef1585a6f78f3f848eecb1706bf7b2868fccefc9d728c30480f3aabc9ac5c3a9b4b3c74c2f7d6f0da235234953ea24b644112e04a2ec619f6bf95306ef30563c4608ec4b53ed7c15736d5f79c7fa1e35f2444beb366ae4c71
当我期望更接近:
JfoSJGo1qELUbpzH8d4QXtafup+J2F9wLxHCop00BQ4YS0cRdRCKDfHpFPZQYjNeyQj00HwHbz+vj8haTPbpdqT94AHAl+VZ+TPAiUw1U5EXLLyy4tzbmfVI7CwvMm26lwB4REzYUZdedha1caxMEfxQ5duB+x4ol9eRZM/savg=
我缺少某些格式或文件类型吗?
要回答我自己的问题…第一个输出为十六进制,第二个输出为base64。只需将return语句更改为 return new String(Base64.encode(encryptedBytes)); ,您会很好!
return new String(Base64.encode(encryptedBytes));