pkcs#7

I need to get a detached PKCS #7 signature of some string in Python, using PyOpenSSL. I've got a key in .p12 file. So far, I'm trying to do so: from OpenSSL.crypto import load_pkcs12, sign pkcs12 = load_pkcs12(key_dat, key_pwd) algo = pkcs12.get_certificate().get_signature_algorithm() pkey = pkcs12.get_privatekey() sg = sign(pkey, manifest, algo) But it's not what required. I've searched net, but most examples are related to signing email chunks and use M2Crypto. Is there any way of doing it in bare PyOpenSSL? The PKCS#7 OpenSSL functions that you need for this do not seem to be exported by

What are the steps need to follow to encrypt, sign, decrypt and verify signature using java. using PKCS#7 algorithm, what is the use of java key store ? with respect to PKCS#7. Step 1 Generate key using keytool utility. here your will find good tutorial Step 2 Load the keystore import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.security.GeneralSecurityException; import java.security.KeyStore; import org.apache.commons.io.IOUtils; import org.apache.commons.lang.SystemUtils; public class MyKeystoreProvider { public KeyStore

I am trying to sign and verify sign using PKCS#7. I am following book beginning cryptography with java . I have written sample code to sign and verify. When i am trying to attach a signature and write it to a file and then trying to verify i am getting exception (Exception is given below ) I want to know how do we write this signed data to a file ? Do i need to share keystore also to second person who will verify the sign? org.bouncycastle.cms.CMSException: message-digest attribute value does not match calculated value at org.bouncycastle.cms.SignerInformation.doVerify(Unknown Source) at org

I have a pkcs#7 file, which contains signed data. It successfully verifies: $ openssl smime -verify -in data.p7s -CAfile root-certificate.pem Verification successful Signed data But when I extract the signed part, I do not see that it is actually the same as what was signed. I mean the following steps: $ openssl asn1parse -in data.p7s ... 35:d=4 hl=2 l= 9 prim: OBJECT :pkcs7-data 46:d=4 hl=2 l=inf cons: cont [ 0 ] 48:d=5 hl=2 l=inf cons: OCTET STRING 50:d=6 hl=2 l= 5 prim: OCTET STRING :(my data is here in plaintext) ... (then the signed block starts:) 2861:d=6 hl=2 l= 9 prim: OBJECT

I'm writing a SAML 2.0 response parser to handle POST authentication in ASP.Net (in C# and MVC, but that's less relevant). So I have a .p7b file to validate with and that can be read into a X509Certificate2Collection and a sample assertion - a base 64 encoded SAML response. Ideally I want to use the built in WSSecurityTokenSerializer , but that fails , so I'm looking for a way that works. I'm reading the XML directly instead: // get the base 64 encoded SAML string samlAssertionRaw = GetFromHttpRequest(); // load a new XML document var assertion = new XmlDocument { PreserveWhitespace = true };

I would like to parse android apk's CERT.RSA in Python. I know it can be parsed with pyOpenSSL import OpenSSL cert = OpenSSL.crypto.load_certificate(OpenSSL.crypto.FILETYPE_ASN1, open('CERT.RSA', 'rb').read()) cert = OpenSSL.crypto.load_pkcs7_data(type, buffer) cert is of type 'OpenSSL.crypto.PKCS7'. BUT right now PKCS7 object is not complete, I cannot get attributes I need, is there any alternative way to parse that file? Comments : I don't know if there's a way to convert it to another format so it can be parsed You can convert PKCS#7 to PEM using openssl , PEM is readable using PyOpenSSL

PDF document needs to signed with national digital identity. National digital identity WebService provide facility to sign document, in my project I have integrated same. Requesting Esign services give response in PKCS7(CMS) format. I want to append same response in multiple locations, So i am creating multiple empty signature container post i receive Response from service. I referred this article : Sign Pdf Using ITextSharp and XML Signature But in given article we only one signing location is present but i have multiple signing locations. I am using itext sharp Library. Using MakeSignature

I am using Bouncy Castle provided library to encrypt,decrypt,sign and verify sign. I am doing this as 1. Encrypt data 2. Sign data 3. Write signed byte to a file 4. Read signed byte from file 5. Verify signature 6. Decrypt data I have taken reference from Beginning Cryptography with Java My problem is in step 5 when i am verifying data i am getting org.bouncycastle.cms.CMSException: message-digest attribute value does not match calculated value My code is below import java.io.ByteArrayInputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java