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关于keycloak源码包中KeystoreUtil密钥库工具类获取java.security.KeyStore/KeyPair密钥库及对称密钥等

标签:keycloak,KeystoreUtil,密钥库工具,KeyStore,KeyPair     发布时间:2018-05-14   

一、前言

关于keycloakkeycloak-common源码包org.keycloak.common.util.KeystoreUtil密钥库工具类,获取java.security.KeyStore密钥库、获取java.security.KeyPair密钥对等方法。

二、源码说明

package org.keycloak.common.util;@b@@b@import org.keycloak.common.constants.GenericConstants; @b@import java.io.File;@b@import java.io.FileInputStream;@b@import java.io.InputStream;@b@import java.security.KeyPair;@b@import java.security.KeyStore;@b@import java.security.PrivateKey;@b@import java.security.PublicKey;@b@ @b@public class KeystoreUtil {@b@    @b@    static{@b@        BouncyIntegration.init();@b@    }@b@@b@    public enum KeystoreFormat {@b@        JKS,@b@        PKCS12@b@    }@b@@b@    public static KeyStore loadKeyStore(String filename, String password) throws Exception {@b@        KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType());@b@        InputStream trustStream = null;@b@        if (filename.startsWith(GenericConstants.PROTOCOL_CLASSPATH)) {@b@            String resourcePath = filename.replace(GenericConstants.PROTOCOL_CLASSPATH, "");@b@            if (Thread.currentThread().getContextClassLoader() != null) {@b@                trustStream = Thread.currentThread().getContextClassLoader().getResourceAsStream(resourcePath);@b@            }@b@            if (trustStream == null) {@b@                trustStream = KeystoreUtil.class.getResourceAsStream(resourcePath);@b@            }@b@            if (trustStream == null) {@b@                throw new RuntimeException("Unable to find key store in classpath");@b@            }@b@        } else {@b@            trustStream = new FileInputStream(new File(filename));@b@        }@b@        trustStore.load(trustStream, password.toCharArray());@b@        trustStream.close();@b@        return trustStore;@b@    }@b@@b@    public static KeyPair loadKeyPairFromKeystore(String keystoreFile, String storePassword, String keyPassword, String keyAlias, KeystoreFormat format) {@b@        InputStream stream = FindFile.findFile(keystoreFile);@b@@b@        try {@b@            KeyStore keyStore = null;@b@            if (format == KeystoreFormat.JKS) {@b@                keyStore = KeyStore.getInstance(format.toString());@b@            } else {@b@                keyStore = KeyStore.getInstance(format.toString(), "BC");@b@            }@b@@b@            keyStore.load(stream, storePassword.toCharArray());@b@            PrivateKey privateKey = (PrivateKey) keyStore.getKey(keyAlias, keyPassword.toCharArray());@b@            if (privateKey == null) {@b@                throw new RuntimeException("Couldn't load key with alias '" + keyAlias + "' from keystore");@b@            }@b@            PublicKey publicKey = keyStore.getCertificate(keyAlias).getPublicKey();@b@            return new KeyPair(publicKey, privateKey);@b@        } catch (Exception e) {@b@            throw new RuntimeException("Failed to load private key: " + e.getMessage(), e);@b@        }@b@    }@b@}