openssl/crypto/ec/ecx_backend.h
Richard Levitte 0abae1636d EVP: Implement support for key downgrading in backends
Downgrading EVP_PKEYs from containing provider side internal keys to
containing legacy keys demands support in the EVP_PKEY_ASN1_METHOD.

This became a bit elaborate because the code would be almost exactly
the same as the import functions int EVP_KEYMGMT.  Therefore, we end
up moving most of the code to common backend support files that can be
used both by legacy backend code and by our providers.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/11375)
2020-03-25 17:01:32 +01:00

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C

/*
* Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#define ISX448(id) ((id) == EVP_PKEY_X448)
#define IS25519(id) ((id) == EVP_PKEY_X25519 || (id) == EVP_PKEY_ED25519)
#define KEYLENID(id) (IS25519(id) ? X25519_KEYLEN \
: ((id) == EVP_PKEY_X448 ? X448_KEYLEN \
: ED448_KEYLEN))
#define KEYNID2TYPE(id) \
(IS25519(id) ? ECX_KEY_TYPE_X25519 \
: ((id) == EVP_PKEY_X448 ? ECX_KEY_TYPE_X448 \
: ((id) == EVP_PKEY_ED25519 ? ECX_KEY_TYPE_ED25519 \
: ECX_KEY_TYPE_ED448)))
#define KEYLEN(p) KEYLENID((p)->ameth->pkey_id)