Question

我已从其他设备接收到RSA公钥。我用这些字节数组创建公钥来加密任何字符串。但我的公钥无效。

撤回了许多问题，但我不知道为什么会这样。请帮帮我。

步骤如下。

从公钥传递 - 字节数组 - 另一个设备。
使用X509EncodedKeySpec生成PublicKey对象。

 StringBuilder builder = new StringBuilder();
 for ( byte key : mKey ) builder.append(key);
 byte[] keyBytes = Base64.decode(builder.toString().getBytes("utf-8"), Base64.DEFAULT);

 PublicKey publicKey = KeyFactory.getInstance("RSA").generatePublic(new
 X509EncodedKeySpec(keyBytes));

mKey是公钥的字节数组。

但现在发生了异常。

例外：

03-23 15:23:53.468    5641-5641/updator.firmware.mpaio.samilcts.com.mpaiofirmwareupdator W/System.err﹕ java.security.spec.InvalidKeySpecException: java.lang.RuntimeException: error:0D0680A8:asn1 encoding routines:ASN1_CHECK_TLEN:wrong tag
03-23 15:23:53.468    5641-5641/updator.firmware.mpaio.samilcts.com.mpaiofirmwareupdator W/System.err﹕ at com.android.org.conscrypt.OpenSSLKey.getPublicKey(OpenSSLKey.java:101)
03-23 15:23:53.468    5641-5641/updator.firmware.mpaio.samilcts.com.mpaiofirmwareupdator W/System.err﹕ at com.android.org.conscrypt.OpenSSLRSAKeyFactory.engineGeneratePublic(OpenSSLRSAKeyFactory.java:47)
03-23 15:23:53.468    5641-5641/updator.firmware.mpaio.samilcts.com.mpaiofirmwareupdator W/System.err﹕ at java.security.KeyFactory.generatePublic(KeyFactory.java:171)
03-23 15:23:53.468    5641-5641/updator.firmware.mpaio.samilcts.com.mpaiofirmwareupdator W/System.err﹕ at updator.firmware.mpaio.samilcts.com.mpaiofirmwareupdator.MainActivity.processGenerateKeyForUpdate(MainActivity.java:253)
03-23 15:23:53.468    5641-5641/updator.firmware.mpaio.samilcts.com.mpaiofirmwareupdator W/System.err﹕ at updator.firmware.mpaio.samilcts.com.mpaiofirmwareupdator.MainActivity.access$1600(MainActivity.java:53)
03-23 15:23:53.468    5641-5641/updator.firmware.mpaio.samilcts.com.mpaiofirmwareupdator W/System.err﹕ at updator.firmware.mpaio.samilcts.com.mpaiofirmwareupdator.MainActivity$5.handleMessage(MainActivity.java:411)
03-23 15:23:53.468    5641-5641/updator.firmware.mpaio.samilcts.com.mpaiofirmwareupdator W/System.err﹕ at android.os.Handler.dispatchMessage(Handler.java:102)

比照收到PublicKey字节数组：

＆＃39; 0x47,0x95,0x1a，0xe6,0xf1,0xba，0x31,0x3b，0x73,0xc7,0x79， 0x75,0x72,0xc6,0x6d，0xcc，0xf0,0x6b，0x0f，0xfa，0x16,0x0e， 0xed，0x2d，0x85,0xeb，0x17,0x89,0x91,0x83,0x59,0x64,0xda， 0x04,0x69,0x31,0x45,0x16,0x73,0x1b，0x46,0xab，0xe0,0x2d， 0x6e，0xda，0x7d，0x51,0xc9,0x2b，0xc6,0xe9,0x73,0x19,0x2e， 0x3d，0x39,0x12,0xd6,0x44,0xf8,0x71,0xe0,0x49,0xc4,0x54， 0xd5,0xd1,0xe9,0x1f，0x03,0x6f，0xd6,0x2b，0xf9,0x77,0xd8， 0x83,0x7e，0x9d，0x1d，0xf7,0x46,0x5d，0xf4,0xac，0x9f，0x6b， 0xe7,0x2a，0x68,0xb9,0x55,0x01,0xd3,0xde，0xbb，0x1b，0x93， 0x3b，0x0a，0x78,0xe2,0x06,0x1c，0x5d，0x18,0x61,0x2d，0x8f， 0x23,0x4e，0x3c，0xbb，0x35,0xa5,0x99,0xb4,0x2f，0x9b，0x9d， 0x2b，0x67,0xfb，0x89,0xba，0x1c，0x8f，0x48,0x9c，0xa7,0x99， 0x5d，0xa0,0x11,0xe6,0x1d，0x5a，0xd2,0x18,0x03,0xc5,0x98， 0xf5,0x26,0xb2,0x14,0xaa，0xfd，0x77,0x8e，0x78,0x36,0xc4， 0x46,0xb2,0xea，0xd0,0xa2,0x5d，0xb9,0xc5,0xae，0x47,0x17， 0xc1,0x93,0x42,0x12,0x9c，0x3a，0xa0,0x71,0xb5,0x32,0x51， 0x74,0xa0,0x6d，0x2b，0xbe，0xc8,0x4f，0xc4,0xf3,0x5f，0xd3， 0x4f，0x6b，0xf9,0x7a，0x5d，0xfa，0x93,0x8f，0xf2,0x00,0x1a， 0x92,0x18,0x41,0xd5,0x83,0x06,0x98,0xeb，0x38,0x86,0xbe， 0x3c，0x20,0xe5,0x19,0xdf，0x8c，0xac，0x38,0x83,0x5e，0xde， 0x33,0x62,0x33,0x14,0xee，0xe3,0x6c，0x6b，0x02,0xee，0x0a， 0xfe，0x79,0x5e，0x32,0x8c，0x2e，0x20,0x05,0x59,0xed，0x98， 0x89,0xf1,0x9b，0xbf，0x5a，0x21,0x25,0x1d，0x51,0x65,0x0e， 0xbd，0x03,0xde，＆＃39;

错误：0D0680A8：asn1编码例程：ASN1_CHECK_TLEN：加密RSA公钥时出错标签 - 从其他设备传递

0 个答案: