How to verify the root trust of a ceritifcate

How to verify the root trust of a ceritifcate

Content Index :

How to verify the root trust of a ceritifcate
Tag : java , By : Tink
Date : January 10 2021, 01:49 PM

No Comments Right Now !

Boards Message :
You Must Login Or Sign Up to Add Your Comments .

Share : facebook icon twitter icon

Verify integrity Ceritifcate { RSACryptoServiceProvider - SHA1 - thumbprint }

Tag : chash , By : Priya
Date : March 29 2020, 07:55 AM
should help you out There is no actual question here. You are right that you are unconditionally ignoring the initial value of verif. More importantly, have you considered using X509Certificate2 to do verification?:
X509Certificate2 x2 = new X509Certificate2(certificatEnCours);
bool verif = x2.Verify();

Error: unable to verify the first certificate / How to trust all certificates?

Tag : ssl , By : Pat
Date : November 01 2020, 09:01 AM
this one helps. When I try to install an extension I get this error: , Had the same problem.
Adding environment variable

How do I verify a root DNS trust anchor?

Tag : perl , By : DonMac
Date : March 29 2020, 07:55 AM
it helps some times You seem to have misunderstood what's in the files IANA provides. None of them except the public root key itself is actually DNSSEC data. The Kjqmt7v.crt file, for example, is an X.509 certificate in DER format (so it's no wonder that Net::DNS::Keyset chokes on it). If you look at it (with the openssl x509 command, for example), you can see that included in its DN field is the textual representation of a DS record for the root KSK. So if you verify that certificate, you know that DS is genuine, and you can use that to verify the DNSKEY.
Another alternative available at the same URL, which is probably easier to use for most people, is a DS for the KSK in XML format, with a detached PGP signature. Verify the signature, use the data in the XML file to build a proper DS record in your favorite programming language, and then you can use that to verify the KSK DNSKEY record.

Parse and verify a WS Trust XML Token

Tag : .net , By : Tony Siu
Date : March 29 2020, 07:55 AM
it should still fix some issue The solution is to think of the token as it was a regular XMLDsig signed XML - the assertion node is signed and the signature's reference points back to it. The code is rather simple, what's interesting however is that the SignedXml class has to be inherited to have the signature validator that follows the AssertionID attribute (the default convention is that the signed node's id attribute is called just ID and the default validator just won't find the node that has the id attribute called differently).
public class SamlSignedXml : SignedXml
    public SamlSignedXml(XmlElement e) : base(e) { }

    public override XmlElement GetIdElement(XmlDocument document, string idValue)
        XmlNamespaceManager mgr = new XmlNamespaceManager(document.NameTable);
        mgr.AddNamespace("trust", "http://docs.oasis-open.org/ws-sx/ws-trust/200512");
        mgr.AddNamespace("wsu", "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd");
        mgr.AddNamespace("saml", "urn:oasis:names:tc:SAML:1.0:assertion");

        XmlElement assertionNode = 
                                                     "trust:RequestedSecurityToken/saml:Assertion", mgr);

        if (assertionNode.Attributes["AssertionID"] != null &&
            string.Equals(assertionNode.Attributes["AssertionID"].Value, idValue, StringComparison.InvariantCultureIgnoreCase)
            return assertionNode;

        return null;
// token is the string representation of the SAML1 token
// expectedCertThumb is the expected certificate's thumbprint
protected bool ValidateToken( string token, string expectedCertThumb, out string userName )
 userName = string.Empty;

 if (string.IsNullOrEmpty(token)) return false;

 var xd = new XmlDocument();
 xd.PreserveWhitespace = true;

 XmlNamespaceManager mgr = new XmlNamespaceManager(xd.NameTable);
 mgr.AddNamespace("trust", "http://docs.oasis-open.org/ws-sx/ws-trust/200512");
 mgr.AddNamespace("wsu", "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd");
 mgr.AddNamespace("saml", "urn:oasis:names:tc:SAML:1.0:assertion");

 // assertion
 XmlElement assertionNode = (XmlElement)xd.SelectSingleNode("//trust:RequestSecurityTokenResponseCollection/trust:RequestSecurityTokenResponse/trust:RequestedSecurityToken/saml:Assertion", mgr);

 // signature
 XmlElement signatureNode = (XmlElement)xd.GetElementsByTagName("Signature")[0];

 var signedXml = new SamlSignedXml( assertionNode );

 X509Certificate2 certificate = null;
 foreach (KeyInfoClause clause in signedXml.KeyInfo)
  if (clause is KeyInfoX509Data)
   if (((KeyInfoX509Data)clause).Certificates.Count > 0)
    certificate =

 // cert node missing
 if (certificate == null) return false;

 // check the signature and return the result.
 var signatureValidationResult = signedXml.CheckSignature(certificate, true);

 if (signatureValidationResult == false) return false;

 // validate cert thumb
 if ( !string.IsNullOrEmpty( expectedCertThumb ) )
  if ( !string.Equals( expectedCertThumb, certificate.Thumbprint ) )
   return false;

 // retrieve username

 // expires = 
 var expNode = xd.SelectSingleNode("//trust:RequestSecurityTokenResponseCollection/trust:RequestSecurityTokenResponse/trust:Lifetime/wsu:Expires", mgr );

 DateTime expireDate;

 if (!DateTime.TryParse(expNode.InnerText, out expireDate)) return false; // wrong date

 if (DateTime.UtcNow > expireDate) return false; // token too old

 // claims
 var claimNodes =                 
                  "saml:Assertion/saml:AttributeStatement/saml:Attribute", mgr );
 foreach ( XmlNode claimNode in claimNodes )
  if ( claimNode.Attributes["AttributeName"] != null && 
              claimNode.Attributes["AttributeNamespace"] != null &&
       string.Equals( claimNode.Attributes["AttributeName"].Value, "name", StringComparison.InvariantCultureIgnoreCase ) &&   
                     string.Equals( claimNode.Attributes["AttributeNamespace"].Value, "http://schemas.xmlsoap.org/ws/2005/05/identity/claims", StringComparison.InvariantCultureIgnoreCase ) &&
         claimNode.ChildNodes.Count == 1 
   userName = claimNode.ChildNodes[0].InnerText;
   return true;

 return false;

How use openssl to verify a certificate in PEM with a local trust store?

Tag : c , By : Robby
Date : March 29 2020, 07:55 AM
it should still fix some issue The overall OpenSSL documentation around this topic is rather limited and has broken links all over the place, so my approach might not the only one or best one. As far as I can see, verifying a certificate (chain) is done with the following steps, unrolled in reverse order because I think that gives a better understanding. For the resulting code, see the end of this answer. All code has error checking omitted for the sake of brevity. Also, the loading of Certificate Revocation Lists (CRLs) is not explained, I think that is beyond the scope of your question.
The actual verification function
store_ctx = X509_STORE_CTX_new();
X509_STORE_CTX_init(store_ctx, store, cert, intermediates)
store = X509_STORE_new();
lookup = X509_STORE_add_lookup(store, X509_LOOKUP_hash_dir());
X509_LOOKUP_add_dir(lookup, "/etc/ssl/certs", X509_FILETYPE_PEM);
bio_in = BIO_new_file(certFileName, "r");
result = PEM_read_bio_X509(bio_in, NULL, NULL, NULL);
intermediates = sk_X509_new_null();
for (filename in certFilenames) do {
    icert = readCert(filename);
    sk_X509_push(intermediates, icert);
#include <openssl/x509.h>
#include <openssl/x509_vfy.h>
#include <openssl/pem.h>

const char *trustedCertsPath = "/etc/ssl/certs";

int main(
    int argc,
    char **argv)
    X509 *cert = NULL;
    X509 *icert = NULL;
    STACK_OF(X509) *intermediates = NULL;
    X509_STORE *store = NULL;
    X509_LOOKUP *lookup = NULL;
    X509_STORE_CTX *store_ctx = NULL;
    BIO *bio_in = NULL;
    int currentArg = 1;
    int result = 0;

    store = X509_STORE_new();
    lookup = X509_STORE_add_lookup(store, X509_LOOKUP_hash_dir());
    X509_LOOKUP_add_dir(lookup, trustedCertsPath, X509_FILETYPE_PEM);

    /* Certificate to be checked */
    bio_in = BIO_new_file(argv[currentArg++], "r");
    cert = PEM_read_bio_X509(bio_in, NULL, NULL, NULL);

    /* Stack of untrusted intermediate certificates */
    intermediates = sk_X509_new_null();
    while (currentArg < argc) {
        bio_in = BIO_new_file(argv[currentArg++], "r");
        icert = PEM_read_bio_X509(bio_in, NULL, NULL, NULL);
        sk_X509_push(intermediates, icert);

    store_ctx = X509_STORE_CTX_new();
    X509_STORE_CTX_init(store_ctx, store, cert, intermediates);

    result = X509_verify_cert(store_ctx);
    printf("Result from X509_verify_cert is %d\n", result);

    sk_X509_pop_free(intermediates, X509_free);
$ gcc  main.c $(pkg-config openssl --libs) -o verify -Wall
$ ./verify \*.google.com.pem Google\ Internet\ Authority\ G3.pem
Result from X509_verify_cert is 1
Related Posts Related QUESTIONS :
  • Java/RegEx - Negation of pattern not working
  • How to split a string to non empty words if it might include a separator like tab on first place
  • Supplier<Sequence<String>> cannot be iterated more than once
  • Why there is only one thread can actually started in @PostConstruct method?
  • Manage CompletionStage inside of Netty handler
  • Url Problem while Developing on Localhost and deploy on Remote Virtual Server
  • How to identify the missing type id in Jackson error?
  • android data binding error: cannot find symbol
  • Spring Boot application with a jar dependency does not run after maven build
  • Spring Data JPA query , filter ? search engine ? JPQL?
  • Why LiveData returns null in ViewModel?
  • what this line of code mean....new URLClassLoader(new URL[0],getClass().getClassLoader());
  • Why do need to use new Random() instead of just Random Randomnum?
  • I want to access zk components from the java file
  • How do I cast FieldValue.serverTimestamp() to Kotlin/Java Date Class
  • Insertion Sort Double Array with User Input - JAVA
  • Creating 2 dimesional array with user input and find sum of specific columns
  • can not get Advertising ID Provider in android
  • Convert list of Objects to map of properties
  • How to represent an undirected weighted graph in java
  • Return values as array from collection
  • ByteBuddy generic method return cast to concrete type
  • ImageView hides the round corners of the parent
  • Is there a way to find setter method by its getter method or vice versa in a class?
  • Get aggregated list of properties from list of Objects(Java 8)
  • Unable to find a document in Mongodb where exact date match in java
  • UsernamePasswordAuthenticationFilter skips success handler
  • Use Java filter on stream with in a stream filter
  • Default Login not successful in spring boot 2.1.7
  • Adding key value pairs from a file to a Hashmap
  • Rub regex: matching a char except when after by another char
  • Convert Base64 String to String Array
  • Escape Unicode Character 'POPCORN' to HTML Entity
  • An empty JSON field which is a boolean/nullable field in Java model, is getting converted as null
  • Mongo java driver cannot find public constructor for interface
  • How to unit test writing a file to AWS Lambda output stream?
  • How to make a GitHub GraphQL API Call from Java
  • What's the difference between @ComponentScan and @Bean in a context configuration?
  • Expected class or package adding a view using a class
  • can be delete of a element in a static array be O(1)?
  • Instance variable heap or stack ? ( with specific example)
  • Assert progress of ProgressBar in Espresso test
  • How to detect if gson.fromjson() has excess elements
  • I cant generate the proper code to select the a specific filter on a BI dashboard I am working on
  • How to Inject Dependencies into a Servlet Filter with Spring Boot Filter Registration Bean?
  • Thrift types as a Generic
  • Effective algorithm to random 4 unique integers less than a big max such as 100_000
  • Combining or and negation in Java regex?
  • Unable to instantiate default tuplizer Exception
  • Multi-tenant migration to work with quarkus
  • Ignite persisting a Set: Cannot find metadata for object with compact footer
  • Maven cannot resolve Jacob dependency using eclipse
  • testcontainers oracle database container starts before database user is created
  • Launching two spring boot apps in integration test
  • Is there a way to add a HashMap's value that is a integer array into a ArrayList?
  • Is there any way that I can get a parameter in paintComponent?
  • Empty stack with one recursive method and one iterative method
  • What's the behavior of onBackpressureBuffer in RxJava2
  • Java regex can only use 1 quantifier in a lookback (need 2)
  • How to fix error in native query : it is showing syntax error near or at
  • shadow
    Privacy Policy - Terms - Contact Us © scrbit.com