下面的方法已過時KeyPairGeneratorSpec置換KeyGenParameterSpec.Builder等價物 - 密鑰存儲操作失敗
KeyPairGenerator generator = KeyPairGenerator.getInstance("RSA", "AndroidKeyStore");
KeyPairGeneratorSpec spec = new KeyPairGeneratorSpec.Builder(this)
.setAlias(alias)
.setSubject(new X500Principal("CN=Sample Name, O=Android Authority"))
.setSerialNumber(BigInteger.ONE)
.setStartDate(start.getTime())
.setEndDate(end.getTime())
.build();
generator.initialize(spec);
我來到看起來像更換此
KeyPairGenerator generator = KeyPairGenerator.getInstance("RSA", "AndroidKeyStore");
generator.initialize(new KeyGenParameterSpec.Builder
(alias, KeyProperties.PURPOSE_SIGN)
.setDigests(KeyProperties.DIGEST_SHA256)
.setSignaturePaddings(KeyProperties.SIGNATURE_PADDING_RSA_PKCS1)
.build());
雖然我可以用這個來產生密鑰對和加密值,我無法解密它
public void encryptString(String alias) {
try {
KeyStore.PrivateKeyEntry privateKeyEntry = (KeyStore.PrivateKeyEntry)keyStore.getEntry(alias, null);
RSAPublicKey publicKey = (RSAPublicKey) privateKeyEntry.getCertificate().getPublicKey();
String initialText = startText.getText().toString();
if(initialText.isEmpty()) {
Toast.makeText(this, "Enter text in the 'Initial Text' widget", Toast.LENGTH_LONG).show();
return;
}
//Security.getProviders();
Cipher inCipher = Cipher.getInstance("RSA/ECB/PKCS1Padding", "AndroidKeyStoreBCWorkaround");
inCipher.init(Cipher.ENCRYPT_MODE, publicKey);
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
CipherOutputStream cipherOutputStream = new CipherOutputStream(
outputStream, inCipher);
cipherOutputStream.write(initialText.getBytes("UTF-8"));
cipherOutputStream.close();
byte [] vals = outputStream.toByteArray();
encryptedText.setText(Base64.encodeToString(vals, Base64.DEFAULT));
} catch (Exception e) {
Toast.makeText(this, "Exception " + e.getMessage() + " occured", Toast.LENGTH_LONG).show();
Log.e(TAG, Log.getStackTraceString(e));
}
}
public void decryptString(String alias) {
try {
KeyStore.PrivateKeyEntry privateKeyEntry = (KeyStore.PrivateKeyEntry)keyStore.getEntry(alias, null);
Cipher output = Cipher.getInstance("RSA/ECB/PKCS1Padding", "AndroidKeyStoreBCWorkaround");
output.init(Cipher.DECRYPT_MODE, privateKeyEntry.getPrivateKey());
String cipherText = encryptedText.getText().toString();
CipherInputStream cipherInputStream = new CipherInputStream(
new ByteArrayInputStream(Base64.decode(cipherText, Base64.DEFAULT)), output);
ArrayList<Byte> values = new ArrayList<>();
int nextByte;
while ((nextByte = cipherInputStream.read()) != -1) {
values.add((byte)nextByte);
}
byte[] bytes = new byte[values.size()];
for(int i = 0; i < bytes.length; i++) {
bytes[i] = values.get(i).byteValue();
}
String finalText = new String(bytes, 0, bytes.length, "UTF-8");
decryptedText.setText(finalText);
} catch (Exception e) {
Toast.makeText(this, "Exception " + e.getMessage() + " occured", Toast.LENGTH_LONG).show();
Log.e(TAG, Log.getStackTraceString(e));
}
在decrypt
方法,以下命令將失敗:
Cipher output = Cipher.getInstance("RSA/ECB/PKCS1Padding", "AndroidKeyStoreBCWorkaround");
output.init(Cipher.DECRYPT_MODE, privateKeyEntry.getPrivateKey());
與
java.security.InvalidKeyException: Keystore operation failed
我認爲它做的KeyGenParamaterSpec.Builder有不正確的情況下,同樣的加密密碼類型是不正確的字符串,解密函數中也是這樣。
但是,這可以追溯到新的KeygenParameterSpec.Builder的使用,因爲使用舊的棄用方法允許我加密和解密。
如何解決?
試圖通過調用keypairgeneratorspec.builder()和iam獲取通過它單獨的不推薦使用的代碼的目標Android 18 -23?我有一個if語句針對18-23?如果我嘗試使用keygenparameterspec.builder()我得到一個編譯時錯誤紅線?看起來像是沒有選擇,但使用不推薦的調用?任何建議任何人? –