Java非对称加密(三)-代码及说明
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} X509EncodedKeySpec keySpec = new X509EncodedKeySpec (publicKeyByte s); return keyFactory.generatePublic (keySpec); } catch (Exception e) { throw new RuntimeException ("load publicKey fail. " + e.getMessage ()); } } /** * 加载公钥（base64） * * @param publicKeyBase64 * 秘钥为BASE64编码 * @param keyAlgorithm * 如：RSA * @param providerName * 可以为空，如：BC * @return */ public static PublicKey loadPublicKey (String publicKeyBase64, String keyA lgorithm, String providerName) { byte [] publicKeyBytes = Encodes.decodeBase64(publicKeyBase64); return loadPublicKey (publicKeyBytes, keyAlgorithm, providerName); } /** * 加载公钥(⽂文件pem) * * @param publicKeyFile * 公钥秘钥⽂文件，内容为BASE64编码 * @param keyAlgorithm * 如：RSA * @param providerName * 可以为空，如：BC * @return */ public static PublicKey loadPublicKey (File publicKeyFile, String keyAlgor ithm, String providerName) { byte [] publicKeyBytes = null; try { publicKeyBytes = Encodes.decodeBase64(FileUtils.readFileToString (publicKeyFile));
} catch (Exception e) {
throw new RuntimeException ("加载公钥⽂文件内容失败:" + e.getMessage ())
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私钥的加载默认同公钥，这⾥里里不不在贴代码，从公钥稍微调整下就OK
throw new RuntimeException ("加载公钥⽂文件内容失败:" + e.getMessage ()); } finally { IOUtils.closeQuietly (in); } } /** * 从keystore 加载公钥 * * @param keystoreUri * @param keystoreType * @param keystorePassword * @return */ public static PublicKey loadPublicKeyFromKeyStore (String keystoreUri, Str ing keystoreType, String keystorePassword) { InputStream in = null; try { KeyStore keyStore = KeyStore.getInstance (keystoreType); Resource resource = new DefaultResourceLoader ().getResource (keyst oreUri); in = resource.getInputStream (); keyStore.load (in, keystorePassword.toCharArray ()); Enumeration
} catch (Exception e) {
throw new RuntimeException ("通过keystore 加载证书公钥失败:" + e.getMe ssage ());
} finally {
IOUtils.closeQuietly (in);
}
}
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71私钥的加载
加密和解密