Re: Support for ECDH One-pass in "openssl cms enc"

on behalf of Henning Krause via openssl-users Sent: Sunday, May 23, 2021 2:45 PM To: openssl-users@openssl.org Subject: Support for ECDH One-pass in "openssl cms enc" Hi, I'm trying to encrypt an email using the ECDH One-Pass algorithm. I've first created an X509 certific

Support for ECDH One-pass in "openssl cms enc"

Hi, I'm trying to encrypt an email using the ECDH One-Pass algorithm. I've first created an X509 certificate with an EDSA key based on the curve prime256v1. Then, I ran this command: openssl cms -encrypt -in Unencrypted.eml -binary -recip ecc.cer -aes256 -keyopt ecdh_kdf_md:sha256 -keyopt ecdh

Unable to decrypt an AES encrypted SMIME Message with OpenSSL - Bad Decrypt

have a two mails (SMIME encrypted) for a single recipient. One mail is encrypted using 3DES, the other one is encrypted using AES 256. The mails where created using the C# EnvelopedCms class (http://msdn.microsoft.com/en-us/library/system.security.cryptography.pkcs.envelopedcms%28v=vs.100%29.asp