[php-src] Issue #7737: openssl_seal()/_open() is not able to handle gcm cipers, e.g. aes-256-gcm

Issue: https://github.com/php/php-src/issues/7737 Comment Author: bukka I don't think there's any issue in OpenSSL so you can probably close that linked ticket in OpenSSL. This is just a missing functionality in PHP and it's really a feature request. Basically EVP_Seal* are just wrappers around EVP_Encrypt* that allows encrypting the key with the supplied pkey. What PHP doesn't do is to provide a way to return a tag. Although you could probably write your version of sealing in PHP to give you the same functionality ( you might get an idea when you look to https://github.com/openssl/openssl/blob/defe51c178e3dc9f07514c179121021fd78691b4/crypto/evp/p_seal.c ). That said we could possibly add extra parameters to openssl_seal to return tag and also extend openssl_open accordingly. So that's why this should be a feature request.