我正在使用存儲在Android密鑰庫中的RSA密鑰對對我的應用中的數據進行加密。檢索私鑰時鏈爲空
我已經看到NullPointerException
S IN Play商店,但我一直沒能重現他們:
java.lang.NullPointerException: chain == null
at java.security.KeyStore$PrivateKeyEntry.<init>(KeyStore.java:1205)
at java.security.KeyStoreSpi.engineGetEntry(KeyStoreSpi.java:374)
at java.security.KeyStore.getEntry(KeyStore.java:644)
at MyClass.getKeyStoreEntry(MyClass.java:111)
的源代碼來創建密鑰對
Calendar start = Calendar.getInstance();
start.setTimeInMillis(0);
Calendar end = Calendar.getInstance();
end.set(Calendar.YEAR, 3000);
KeyPairGeneratorSpec.Builder keySpecBuilder = new KeyPairGeneratorSpec.Builder(context)
.setAlias(keyName)
.setSubject(new X500Principal("CN=" + keyName))
.setSerialNumber(BigInteger.TEN)
.setStartDate(start.getTime())
.setEndDate(end.getTime())
.setKeySize(RSA_KEY_SIZE);
KeyPairGeneratorSpec spec = keySpecBuilder.build();
KeyPairGenerator gen = KeyPairGenerator.getInstance("RSA", "AndroidKeyStore");
gen.initialize(spec);
gen.generateKeyPair();
然後檢索密鑰:
private KeyStore.PrivateKeyEntry getKeyStoreEntry() {
KeyStore keyStore = KeyStore.getInstance(ANDROID_KEY_STORE);
keyStore.load(null);
if (!keyStore.containsAlias(keyName)) {
throw new KeyNotFoundException();
}
return (KeyStore.PrivateKeyEntry) keyStore.getEntry(keyName, null);
}
這隻有當我使用API級別19-22上的。 23+實施工作正常。
我do not have another key with the same name,我也沒有deleted the key。
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