William Lallemand 31c831e29b MEDIUM: ssl/quic: implement quic crypto with EVP_AEAD
The QUIC crypto is using the EVP_CIPHER API in order to achieve
authenticated encryption, this was the API which was used with OpenSSL.
With libraries that inspires from BoringSSL (libreSSL and AWS-LC), the
AEAD algorithms are implemented using the EVP_AEAD API.

This patch converts the call to the EVP_CIPHER API when called in the
contex of AEAD cryptography for QUIC.

The patch defines some QUIC_AEAD macros that can be either EVP_CIPHER or
EVP_AEAD depending on the library.

This was mainly done for AWS-LC but this could be useful for other
libraries. This should finally allow to use CHACHA20_POLY1305 with
AWS-LC.

This patch allows to use the following ciphers with the EVP_AEAD API:
- TLS1_3_CK_AES_128_GCM_SHA256
- TLS1_3_CK_AES_256_GCM_SHA384

AWS-LC does not implement TLS1_3_CK_AES_128_CCM_SHA256 and
TLS1_3_CK_CHACHA20_POLY1305_SHA256 requires some hack for headers
protection which will come in another patch.
2024-07-25 13:45:38 +02:00
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