当我运行此代码时:
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语句行将抛出以下内容:
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,它似乎会尝试解密,但是我在拆封之后。有什么建议吗?
答案 0 :(得分:2)
您使用UNWRAP_MODE模式初始化了密码,但是您正在尝试加密。您必须使用wrap
和unwrap
函数,请参见API
unwrap(byte[] wrappedKey, String wrappedKeyAlgorithm, int wrappedKeyType)