1-从命令行生成私钥:
openssl genrsa -aes256 -out private.key 2048
java
中,请阅读:
String privateKey = IOUtils.toString(TestJwtSecurityUtil.class.getResourceAsStream("/private.key"));
privateKey = privateKey.replace("-----BEGIN RSA PRIVATE KEY-----", "");
privateKey = privateKey.replace("-----END RSA PRIVATE KEY-----", "");
privateKey = privateKey.replaceAll("\\s+","");
byte[] encodedKey = DatatypeConverter.parseBase64Binary( privateKey );
PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(encodedKey);
KeyFactory kf = KeyFactory.getInstance("RSA");
PrivateKey pKey = kf.generatePrivate(keySpec); // fails
有例外:
线程“ main”中的异常java.security.spec.InvalidKeySpecException: java.security.InvalidKeyException:IOException: DerInputStream.getLength():lengthTag = 58,太大。
我试图转换为base64:
byte[] encodedKey = DatatypeConverter.parseBase64Binary( encodedString );
PrivateKey pKey = kf.generatePrivate(keySpec); // fails
得到:
Exception in thread "main" java.security.spec.InvalidKeySpecException: java.security.InvalidKeyException: invalid key format
at java.base/sun.security.rsa.RSAKeyFactory.engineGeneratePrivate(RSAKeyFactory.java:251)
问:如何通过?为了使私钥被读取,最后我可以使用JWT令牌:
final JwtBuilder builder = Jwts.builder().setId("id1")
....
.signWith(signatureAlgorithm, pKey);
答案 0 :(得分:0)
是的,它是重复的。但是由于我花了超过1个小时在SO网站上寻找它。基于此reply和bouncycastle的PEMParser。谢谢@ dave_thompson_085
要创建私钥-公钥:
然后从java
-
final PrivateKey pKey = getPrivateKey();
final SignatureAlgorithm signatureAlgorithm = SignatureAlgorithm.RS256; // private key to sign / public to confrim a sign
final JwtBuilder builder = Jwts.builder().setId("id1")
.setIssuedAt(now)
.setSubject(subject)
.setIssuer(issuer)
.setAudience("api")
.addClaims(Map.of(
"user_name", "test user",
"authorities", List.of("ROLE_USER"),
"scope", List.of("read", "write"),
"client_id", "test-client"
)
) .signWith(signatureAlgorithm, pKey);
String jwt = builder.compact();
其中:
private static PrivateKey getPrivateKey() throws Exception {
val path = TestUtils.class.getResource("/").getPath();
final PEMParser pemParser = new PEMParser(new FileReader(path + "/private.key"));
final JcaPEMKeyConverter converter = new JcaPEMKeyConverter().setProvider("BC");
final PEMKeyPair object = (PEMKeyPair) pemParser.readObject();
final KeyPair kp = converter.getKeyPair(object);
final PrivateKey pKey = kp.getPrivate();
return pKey;
}
然后检查,粘贴:生成的jwt
至https://jwt.io/(或任何其他工具)以查看/检查内容。
在其中放置public.key内容以检查签名。看到所有的都是绿色的。