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Verify a CA Certificate with a public key in C#


Verify a CA Certificate with a public key in C#

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Verify a CA Certificate with a public key in C#
Tag : chash , By : Topher Cyll
Date : November 25 2020, 07:27 PM


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How to verify one certificate with public key of another


Tag : java , By : anov
Date : March 29 2020, 07:55 AM
help you fix your problem I have two x509Certificates ,
would like do decrypt contents of b with public key of a:

Sudden Certificate Verify Failed on Xero Public Application


Tag : ruby-on-rails , By : user183289
Date : March 29 2020, 07:55 AM
help you fix your problem We were running in to this problem as well - updating to version 2.16.5 of the Xeroizer gem resolved the issue for us.

Golang: verify x509 certificate was signed using private key that corresponds to the specified public key


Tag : go , By : user121405
Date : March 29 2020, 07:55 AM
I wish this help you If I properly understood what you are trying to do, then answer is simple.
Your certificate includes the public key. So all you need is to compare your public key with the public key from the certificate. The code looks like:
if certificate.PublicKey.(*rsa.PublicKey).N.Cmp(publicKey.(*rsa.PublicKey).N) == 0 && publicKey.(*rsa.PublicKey).E == certificate.PublicKey.(*rsa.PublicKey).E {
    println("Same key")
} else {
    println("Different keys")
}
h := sha256.New()
h.Write(certificate.RawTBSCertificate)
hash_data := h.Sum(nil)

err = rsa.VerifyPKCS1v15(publicKey.(*rsa.PublicKey), crypto.SHA256, hash_data, certificate.Signature)
if err != nil {
    println("Signature does not match")
}

How to use phpseclib to verify that a certificate is signed by a public CA?


Tag : php , By : Jesenko Mehmedbasic
Date : March 29 2020, 07:55 AM
it fixes the issue The certificate is signed by an intermediate, which in this case is DigiCert SHA2 Secure Server CA. Intermediate certificates are not present in a root certificate list. Whatever library you're using, I believe you have to explicitly provide valid intermediate certificates for the validation process.
Here's an example using sop/x509 library.
// certificate from smtp.live.com
$cert = Certificate::fromPEM(PEM::fromString($certdata));
// list of trust anchors from https://curl.haxx.se/ca/cacert.pem
$trusted = CertificateBundle::fromPEMBundle(PEMBundle::fromFile('cacert.pem'));
// intermediate certificate from
// https://www.digicert.com/CACerts/DigiCertSHA2SecureServerCA.crt
$intermediates = new CertificateBundle(
    Certificate::fromDER(file_get_contents('DigiCertSHA2SecureServerCA.crt')));
// build certification path
$path_builder = new CertificationPathBuilder($trusted);
$certification_path = $path_builder->shortestPathToTarget($cert, $intermediates);
// validate certification path
$result = $certification_path->validate(PathValidationConfig::defaultConfig());
// failure would throw an exception
echo "Validation successful\n";

Cannot Verify JWT Using x5c (x509) public Certificate


Tag : javascript , By : eastcoastj
Date : March 29 2020, 07:55 AM
I hope this helps . This answer may not help you to answer all your questions, but I have to write it to improve the solution security.
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