I'm trying to verify a non-detached PKCS7 using the package OpenCA::SV. The PKCS7 has been created using Microsoft Crypto API. The verify procedure fails and show me the following errors: Signature Informations (PKCS#7): Depth: 1 Serial Number: 00 Subject: [EMAIL PROTECTED]/CN=Sergio Sagliocco/OU=demo CA - Gualino/O=CSP/C=IT Verify Return: 1 Signed Attributes: Depth: 0 Serial Number: 01 Subject: /CN=Sergio Sagliocco/C=IT Verify Return: 1 Signed Attributes: 2603:error:0407006A:rsa routines:RSA_padding_check_PKCS1_type_1:block type is not 01:rsa_pk1.c:100: 2603:error:04067072:rsa routines:RSA_EAY_PUBLIC_DECRYPT:padding check failed:rsa_eay.c:396: 2603:error:21071069:PKCS7 routines:PKCS7_signatureVerify:signature failure:pk7_doit.c:816: I've created PKCS7 without PKCS9 signed attributes (because I don't know how to insert them!) Does anyone know how to solve my problem? Thanks! Sergio ______________________________________________________________________ OpenSSL Project http://www.openssl.org Development Mailing List [EMAIL PROTECTED] Automated List Manager [EMAIL PROTECTED]