当我运行这段代码时:
public static byte[] unwrap(PrivateKey privateKey, byte[] wrappedKey) throws Exception {
Cipher cipher = Cipher.getInstance("RSA/ECB/OAEPWithSHA-256AndMGF1Padding");
cipher.init(Cipher.UNWRAP_MODE, privateKey);
return cipher.doFinal(wrappedKey);
}
return语句行抛出以下代码:
Exception in thread "main" java.lang.IllegalStateException: Cipher not initialized for encryption/decryption
at javax.crypto.Cipher.checkCipherState(Cipher.java:1754)
at javax.crypto.Cipher.doFinal(Cipher.java:2157)
at x.y.z.decrypt.Main.unwrap(Main.java:47)
at x.y.z.decrypt.Main.main(Main.java:33)
如果我使用DECRYPT_MODE,它似乎会尝试并解密,但我想要解包。有什么建议吗?
发布于 2018-12-06 05:13:49
您使用UNWRAP_MODE模式初始化了密码,但您正在尝试加密。您必须使用wrap
和unwrap
函数,请参阅API
unwrap(byte[] wrappedKey, String wrappedKeyAlgorithm, int wrappedKeyType)
https://stackoverflow.com/questions/53639543
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