OSSL_FUNC_encoder_does_selection() is a dispatchable encoder implementation
function that should return 1 if the given |selection| is supported by an
encoder implementation and 0 if not. This can be used by libcrypto
functionality to figure out if an encoder implementation should be
considered or not.
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/13167)
OSSL_FUNC_decoder_does_selection() is a dispatchable decoder implementation
function that should return 1 if the given |selection| is supported by an
decoder implementation and 0 if not. This can be used by libcrypto
functionality to figure out if an encoder implementation should be
considered or not.
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/13248)
OSSL_ENCODER was developed before OSSL_DECODER, so the idea of
chaining and the resulting API came later. This series of changes
brings the same sort of API and functionality back to OSSL_ENCODER,
making the two APIs more consistent with each other.
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/12873)
The pass phrase prompter that's part of OSSL_ENCODER and OSSL_DECODER
is really a passphrase callback bridge between the diverse forms of
prompters that exist within OpenSSL: pem_password_cb, ui_method and
OSSL_PASSPHRASE_CALLBACK.
This can be generalised, to be re-used by other parts of OpenSSL, and
to thereby allow the users to specify whatever form of pass phrase
callback they need, while being able to pass that on to other APIs
that are called internally, in the form that those APIs demand.
Additionally, we throw in the possibility to cache pass phrases during
a "session" (we leave it to each API to define what a "session" is).
This is useful for any API that implements discovery and therefore may
need to get the same password more than once, such as OSSL_DECODER and
OSSL_STORE.
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/12512)
