小编FUG*_*AZI的帖子

我从一个Web服务(由我自己制作)收到一个基本64字符串编码的RSA PrivateKey PKCS#8.我的Android应用必须将此密钥安全地保存在手机中.

从Android的4.3版本开始,可以使用新的KeyStore API保存密钥.我发现了一篇包含代码示例的文章,该文章展示了如何使用存储密钥所需的规范生成KeyPair.然后恢复钥匙.

// generate a key pair
Context ctx = getContext();
Calendar notBefore = Calendar.getInstance()
Calendar notAfter = Calendar.getInstance();
notAfter.add(1, Calendar.YEAR);
KeyPairGeneratorSpec spec = new KeyPairGeneratorSpec.Builder(ctx)
            .setAlias("key1")
            .setSubject(
                    new X500Principal(String.format("CN=%s, OU=%s", alais,
                            ctx.getPackageName())))
            .setSerialNumber(BigInteger.ONE).setStartDate(notBefore.getTime())
            .setEndDate(notAfter.getTime()).build();

KeyPairGenerator kpGenerator = KeyPairGenerator.getInstance("RSA", "AndroidKeyStore");
kpGenerator.initialize(spec);
KeyPair kp = kpGenerator.generateKeyPair();

// in another part of the app, access the keys
KeyStore keyStore = KeyStore.getInstance("AndroidKeyStore");
keyStore.load(null);
KeyStore.PrivateKeyEntry keyEntry = (KeyStore.PrivateKeyEntry)keyStore.getEntry("key1", null);
RSAPublicKey pubKey = (RSAPublicKey)keyEntry.getCertificate().getPublicKey();
RSAPrivateKey privKey …