In the Free Pascal libraries there's a hash library that enables use of MD5 and SHA1 hashing algorithms (http://wiki.freepascal.org/hash). But what if I wanted to use a higher one, such as SHA256 or SHA512? Could I achieve this using Free Pascal? Searching the FP Wiki retunrs zero hits for SHA256\SHA512.
I'm trying to do login to my site using
But when I entered a valid username and password and press the submit button, inside the browser you can check that one post request is getting fired with encrypted values.
So, due to encrypted values of username and password. I am not able to do login to the site.
SHA-256 algorithm is used for encryption.
For more details on this issue, please refer below mentioned image.
So, can anyone help me how do I able to do login to my site?
I've been using the following to correctly verify S/MIME documents with SHA1 signatures, but I recently have come upon the need to do the same with SHA256 signatures as SHA1s have been shown to be insecure.
# openssl smime -verify -noverify -inform SMIME -certfile cert.pem -in rawfile.txt -out verified.txt
Has anyone done this? I've tried adding switches:
openssl sha -sha256
As was suggested when verifying just the digest files, but it throws an error.
Ultimately I'm looking to do this via PHP with something like openssl_pkcs7_verify, but I've not gotten even the commandline to work, yet so I'm stumped.
This is on centOS, OpenSSL 1.0.1e-fips 11 Feb 2013
I have a C# application making a successful TCP TLS 1.0 connection with mutual authentication to another company's server. It is implemented using SslStream class. We are just one of many clients of this very large organisation.
This TCP link above must undergo TLS 1.2 + SHA2 upgrade. After doing all necessary steps on our side and successful testing with our local servers we are still failing all attempts to connect to the remote server. A lengthy investigation revealed that during TLS Handshake the server is sending to us a certificate request with only option for Signature Hash Algorithm = SHA1-RSA (see picture below). Our cerificate is SHA256. As a result, SslStream is not sending our certificate to the server at all and the server sees this as a Handshake Failure and closes down the connection.
The reason for this nuisance is that our counterparty uses very old (10.x) version of F5 firewall to terminate SSL. It only sends SHA1/RSA Signature Hash Algorithm in the certificate request although it supports the client’s SHA2 certificates.
While admitting the facts above, our counterparty is unable to upgrade F5 soon enough. They suggested to ignore the requested Signature Hash Algorithm and send our SHA256 certificate anyway. Apparently other clients connecting to them were able to do that somehow.
Unfortunately,.Net's SslStream does not provide that level of fine tuning for TLS handshake.
Hence the question: is it possible to ignore the server's request for SHA1RSA-based certificate at all? What options do I have? Are there SslStream alternatives that implement TLS 1.2? Is there an open-source third-party solution? Any suggestion would be helpful. Thanks in advance.
I'm working on Apple Pay payment token decryption.According to this instruction Payment Token Format Reference on step 2. I need use publicKeyHash field from header of payment token to determine which merchant certificate was used by Apple.
pulbicKeyHash is SHA–256 hash of the X.509 encoded public key bytes of the merchant’s certificate, Base64 encoded as a string.
I have one merchant certificate. So I assume that if i will take sha-256 hash of my certificate's public key and Base64 encode it i will get the same value that i receive in publicKeyHash field of payment token.
But I can't figure out what particular part of the certificate should I hash.The initial merchant certificate provided by Apple is in .cer format.I'have extracted public key from it to .pem format. Than i have tried both take hash -> base64encode of public key (String between -----BEGIN CERTIFICATE----- and -----END CERTIFICATE-----) and to take hash of base64 decoded .pem which i think should be .der and base 64 encode it.
And both failed to match value received from Apple Pay. Also it have different length my base64 encoded hash have 88 char length, and publicKeyHash field is 44 char in length.
When I have tried to base 64 decode publicKeyHash, I've got unreadeble characters like "D�đ���$�f���@c���$����WP��"But according to Apple documentation there should be sha-256 hash which can not contain such symbols.
Can somebody explain me what concrete steps should I perform in order to complete this merchant certificate check?