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Lines of Code : 5License : Permissive (MIT License)
Copyprivate static String getThumbprint(X509Certificate cert) throws NoSuchAlgorithmException, CertificateEncodingException {
MessageDigest md = MessageDigest.getInstance("SHA-1");
md.update(cert.getEncoded());
return DatatypeConv Community Discussions
Trending Discussions on thumbprint
QUESTION
Is it possible to return variable ($logstring) from the ScriptCommand to feed into the LogWriter function?
...ANSWER
Answered 2022-Feb-16 at 14:22To build on the helpful comments: It sounds like you want two things:
Execute a script block remotely that contains references to local variable values.
For that, define your script block - as usual - as script-block literal, i.e. enclosed in
{ ... }; as Sage Pourpre notes, not only does this avoid quoting and escaping headaches, it allows your IDE to syntax-highlight and -check the code inside the block.The simplest way to incorporate local variable values is via the
$using:scope; e.g.,$using:FriendlyName- see the relevant section of the conceptual about_Scopes help topic. This obviates the need to construct the text of your script block as a string that relies on string interpolation.
Output a value from that script block and capture it in local variable
$logString. (You categorically cannot set a local variable directly in a remotely executing script block).
To put it all together:
QUESTION
My aim is to achieve SHA1 fingerprint of a third party website's certificate. I am able to get it successfully using openssl command line however, it's not getting same when I tried to achieve it using python code. The SHA1 fingerprint obtained using python code is totally different than the one obtained via openssl.
openssl steps -->
openssl s_client -servername token.actions.githubusercontent.com -showcerts -connect token.actions.githubusercontent.com:443
The above command output contains chain and root certificate;
...ANSWER
Answered 2022-Jan-20 at 06:55The problem is not the wrong fingerprint calculation from the certificate but that you get the wrong certificate. The server in question is a multi-domain setup which will return different certificates based on the server_name given in the TLS handshake - see Server Name Indication.
The following code will not provide a server_name, which results in a certificate returned for *.azureedge.net, not *.actions.githubusercontent.com as the openssl s_client code gets:
QUESTION
I've run into a bit of a quandary. I'm writing a client/server application. The frontend is in Flutter and uses the Dio http package, the backend is Java. The backend REST API is secured via TLS certificate.
As many other questions have pointed out, Flutter doesn't seem to have access to the system CA Certificate store on all platforms. This is problematic because I intend to allow for self hosting of the server application, meaning certificates from all different CAs could be utilized server-side, so my HTTP client will need to support all of the CAs that a typical web browser supports.
Dio apparently allows you to set a trusted cert chain, but I'm wondering how best to leverage that.
Has anyone encountered this problem before. What solution did you implement to fix this?
These are the solutions I've thought of so far:
- Allow user to "upload" ca cert bundle and store bytes in shared_preferences (difficult for users)
- Find another way to validate the certificate e.g. with user entered thumbprint? (less difficult, let all certs fail original validation, then do custom validatation with onBadCertificate against stored thumbprint)
- Find a package which offers access to system certificate store
- Ship inside the application a majority of big name CA certs and trust them with Dio somehow
The other issue I came here about is that Dio appears to be ignoring my onBadCertificate method. I declared this inside a ConnectionManager, should I not do that?
Here is the code that is being ignored:
...ANSWER
Answered 2022-Jan-05 at 20:40The core issue ended up being that the server did not provide the full certificate chain but only the leaf certificate. Some browsers hides this kinds of issues if the browser have seen the intermediate certificate somewhere else. So just because things works in the browser, it does not means the server is actually providing enough information for other TLS clients to verify the certificate chain.
The solution was therefore to configure the server to provide the full certificate chain.
QUESTION
I have an object converted from JSON which contains information about 'Trusted clients'. There are two properties one of which identifies the uniqueness of a client: Name AND Thumbprint, so if there are elements, either contain the same Name or Thumbprint, they must be omitted.
Also, I'd like to point that output array should contain additional property - Id which could be generated with - New-Guid. That particular case was discussed here: enter link description here.
ANSWER
Answered 2021-Dec-26 at 03:58The way I see around it, is to Group-Object 2 times, on Name and on Thumbprint, to get those objects that are duplicated, once we have this information we can skip them by filtering the object[].
I'm using -NoElement in this case for efficiency.
Since I'm a total noob with classes I decided to make one for practicing purposes :)
QUESTION
I have been trying to get a simple HTTPS secured Kestrel service running which validates clients using an installed self-signed root certificate (from a 3rd party). I am struggling to find what is specifically is wrong with the client certificate and why the service is bouncing the connection. Could someone answer categorically that Kestrel in .NET Core 3.1 on a linux box running OpenSSL 1.0.2k-fips 26 Jan 2017 no long accepts root certs which have a signature algorithm of md5RSA ?
I have been unable to fuind any way to find anything more specific from Kestrel.
I added the following to the program.cs to try to help:
...ANSWER
Answered 2021-Dec-17 at 04:44Okay, so both dotnet and openssl agree the signature is invalid. Although I don't see a practical way to reproduce this, 'unknown digest' (instead of 'bad padding' or 'out of range') suggests the signature was in fact created by the issuer (i.e. not corrupted data or signature, or wrong key) but the signer did it wrong. Try the following procedure (I used my own cert since yours is too private for anybody to see):
QUESTION
I'm trying to understand how to add the parameter -CertificateFilePath in a Powershell Azure Function. Locally you just add the location of the path *c:\locationpath*.
But when used in a Azure Function, I'm not sure how to add the file path from a Function App that has the cert already in TLS/SSL settings where I've uploaded the certificate.
A common way I've seen to do is:
...ANSWER
Answered 2021-Dec-02 at 11:13As venkateshdodda-mt Suggested try the below steps
1 Generate Certificate and Service Principal
- By credential
- By CertificateThumbprint & ApplicationId
- By AadAccessToken & AccountId
QUESTION
Problem Background:
I have a class library project that contains the database migrations (MyProject.MigrationProject.csproj). And in startup.cs of the entry project (Web API), I have explicitly included migration assembly like following.
...ANSWER
Answered 2021-Oct-27 at 11:32Thanks @jane-ma-msft
The Error message shows that it is a Certificate error. Please follow the work around to fix the issue.
Try to generate a new certificate or cancel certificate validation.
Check your
.slnfile. If it hasPackageCertificateKeyFile&PackageCertificateThumbprintplease try to remove the properties and restart a pipeline.Or Check that it is configured correctly and that you have uploaded the correct certificate file to the appropriate path.
Make sure that the agent
windows-latesthas all the .NET SDK versions you need and all the software your project needs to reference. If not, use the task or command line to download them. Click this link to view the software installed on thewindows-latestagent.If you are using the Microsoft-hosted Windows agents in your pipeline, please try to use the self-hosted Agent in your pipeline. Click this document for detailed steps.
QUESTION
We tried to install our Hapis (Nodejs Version 14) Web service on our customer's server. It ran under HTTP for months, but when we went to enable HTTPS with the appropriate paths to the cert and key it fails when the service starts up with:
error:06065064:digital envelope routines:EVP_Decryptfinal_ex:bad decrypt
Their certificate and key are generated using the Venafi online portal. It gave them a crt and key. The crt uses a Signature algorithm: sha256RSA, Signature hash algorithm of sha256, and Thumbprint algorith: sha1.
Also, the private key is a RSA PRIVATE KEY with Proc-Type: 4,ENCRYPTED and DEK-Info: DES-EDE3-CBC.
I am not sure what is going on, because HTTPS works fine on our development servers.
- Is the problem in HapiJS?
- Is the problem with the certificate or key themselves?
- Is there an Node option I need to be passing in when creating the service?
Please help.
...ANSWER
Answered 2021-Aug-21 at 05:00The specified error 06065064:digital envelope routines:EVP_Decryptfinal_ex:bad decrypt occurs in an SSL/TLS connection using OpenSSL (which is what nodejs modules like tls and https actually use) when the privatekey is encrypted (with a passphrase) and the correct passphrase is not provided to decrypt it. The described file format, beginning with a line -----BEGIN RSA PRIVATE KEY----- followed by lines Proc-Type: and DEK-Info: is indeed one of the encrypted formats used by OpenSSL. Specifically this is the encrypted 'traditional' or 'legacy' format; the PKSC8 format added about 2000 but still considered new(!) uses -----BEGIN ENCRYPTED PRIVATE KEY----- and no 822-style headers, only base64 (of the encrypted structure defined by PKCS8); see ursinely-verbose https://security.stackexchange.com/questions/39279/stronger-encryption-for-ssh-keys/#52564 about OpenSSH's use of OpenSSL, which is basically the same as nodejs's use.
The tls module and others that build on it including https ultimately read the key(s) and cert(s) using tls.createSecureContext which accepts in options a member passphrase, or if you need to use multiple keys (and certs) you can provide a passphrase for each key as described in the linked doc.
Alternatively you can avoid the need for a passphrase by converting the key to an unencrypted file, if acceptable under applicable security policies and regulations. (Good policies may prohibit this, but they usually also prohibit getting the privatekey from or providing it to any other system, especially one 'online' somewhere, and your customer is doing the latter.) To retain traditional format do
QUESTION
We have RSA key pairs generated on on-prem and plan to sync them to GCP-KMS. There is an yearly key rotation policy which would be done on on-prem and new key_versions would be synced to KMS. My concern is with the KMS API.
Problem: The API always asks for the 'key_version' as an argument to encrypt/decrypt a file.
Desired behaviour: During decryption, is it not possible that the KMS sees the certificate thumbprint and returns the appropriate key version to decrypt a given encrypted file? e.g. a DEK wrapped with the RSA_public when supplied to KMS gets decrypted by the RSA_Private(or KEK) of the correct version.
If yes, is there any documentation that elaborates on this use case?
...ANSWER
Answered 2021-Oct-06 at 19:28According to the documentation, you can achieve that with symmetric signature (no key version specified), but you can't with the asymetricDecrypt (key version is required in the URL path of the API)
QUESTION
I have the need to generate a JWK with the following parameters:
“kty”: Key Type
“kid”: Key ID
“use”: “sig” Public Key Use
“n”: the modulus
“e”: “AQAB” the public exponent
“x5c”: X. 509 Certificate Chain
“x5t”: X.509 Certificate SHA-1 Thumbprint
Note:
JWKs should contain a public key using RSA algorithm. RSA provides a key ID for key matching purposes.
Should contain X.509 certificate using both “x5t” (X.509 SHA-1 Thumbprint) and “x5c” (X.509 certificate Chain) parameters
The first 5 parameters ("kty", "kid", "use", "n", "e") are fairly straight forward and not an issue. However, for the "x5c" and "x5t" components, I am not sure how to generate these. It seems as I can create an x509 cert using tools such as the one found at https://www.samltool.com/self_signed_certs.php and I suppose the x509 cert generated there would be the x5c parameter. Is this correct and how would I generate a x5t (cert thumbprint) from this?
All help is appreciated.
...ANSWER
Answered 2021-Sep-18 at 06:50Since you have neither a tool nor a language tagged, I assume that it is rather a general explanation of both parameters.
In x5c a certificate or certificate chain is stored, in x5t the associated thumbprint. A certificate or certificate chain is used to prove ownership of a public key, the thumbprint is a hash of a certificate used to identify/compare certificates.
The exact definition of both parameters is described in RFC 7517, JSON Web Key (JWK), chapters 4.7 x5c and 4.8 x5t:
- x5c:
The "x5c" (X.509 certificate chain) parameter contains a chain of one or more PKIX certificates [RFC5280]. The certificate chain is represented as a JSON array of certificate value strings. Each string in the array is a base64-encoded (Section 4 of [RFC4648] -- not base64url-encoded) DER [ITU.X690.1994] PKIX certificate value. The PKIX certificate containing the key value MUST be the first certificate. This MAY be followed by additional certificates, with each subsequent certificate being the one used to certify the previous one. The key in the first certificate MUST match the public key represented by other members of the JWK. Use of this member is OPTIONAL...
- x5t:
The "x5t" (X.509 certificate SHA-1 thumbprint) parameter is a base64url-encoded SHA-1 thumbprint (a.k.a. digest) of the DER encoding of an X.509 certificate [RFC5280]. Note that certificate thumbprints are also sometimes known as certificate fingerprints. The key in the certificate MUST match the public key represented by other members of the JWK. Use of this member is OPTIONAL.
Creation of a certificate:
A self signed certificate can (apart from the online tool you use) also be generated e.g. with OpenSSL. The following OpenSSL statement
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