From 42281f26174dcc6ef4847894f17627f305bdfa2b Mon Sep 17 00:00:00 2001 From: Shane Lontis Date: Thu, 12 Aug 2021 18:20:48 +1000 Subject: Refactor cipher aes_cts code so that it can be used by other 128bit ciphers Reviewed-by: Paul Dale (Merged from https://github.com/openssl/openssl/pull/16286) --- providers/implementations/ciphers/cipher_cts.h | 52 ++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 providers/implementations/ciphers/cipher_cts.h (limited to 'providers/implementations/ciphers/cipher_cts.h') diff --git a/providers/implementations/ciphers/cipher_cts.h b/providers/implementations/ciphers/cipher_cts.h new file mode 100644 index 0000000000..9473fbde88 --- /dev/null +++ b/providers/implementations/ciphers/cipher_cts.h @@ -0,0 +1,52 @@ +/* + * Copyright 2020-2021 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 + */ + +#include "crypto/evp.h" + +/* NOTE: The underlying block cipher is CBC so we reuse most of the code */ +#define IMPLEMENT_cts_cipher(alg, UCALG, lcmode, UCMODE, flags, kbits, \ + blkbits, ivbits, typ) \ +static OSSL_FUNC_cipher_get_params_fn alg##_##kbits##_##lcmode##_get_params; \ +static int alg##_cts_##kbits##_##lcmode##_get_params(OSSL_PARAM params[]) \ +{ \ + return ossl_cipher_generic_get_params(params, EVP_CIPH_##UCMODE##_MODE, \ + flags, kbits, blkbits, ivbits); \ +} \ +const OSSL_DISPATCH ossl_##alg##kbits##lcmode##_cts_functions[] = { \ + { OSSL_FUNC_CIPHER_NEWCTX, \ + (void (*)(void)) alg##_##kbits##_##lcmode##_newctx }, \ + { OSSL_FUNC_CIPHER_FREECTX, (void (*)(void)) alg##_freectx }, \ + { OSSL_FUNC_CIPHER_DUPCTX, (void (*)(void)) alg##_dupctx }, \ + { OSSL_FUNC_CIPHER_ENCRYPT_INIT, (void (*)(void)) alg##_cbc_cts_einit }, \ + { OSSL_FUNC_CIPHER_DECRYPT_INIT, (void (*)(void)) alg##_cbc_cts_dinit }, \ + { OSSL_FUNC_CIPHER_UPDATE, \ + (void (*)(void)) ossl_cipher_cbc_cts_block_update }, \ + { OSSL_FUNC_CIPHER_FINAL, \ + (void (*)(void)) ossl_cipher_cbc_cts_block_final }, \ + { OSSL_FUNC_CIPHER_CIPHER, (void (*)(void))ossl_cipher_generic_cipher }, \ + { OSSL_FUNC_CIPHER_GET_PARAMS, \ + (void (*)(void)) alg##_cts_##kbits##_##lcmode##_get_params }, \ + { OSSL_FUNC_CIPHER_GETTABLE_PARAMS, \ + (void (*)(void))ossl_cipher_generic_gettable_params }, \ + { OSSL_FUNC_CIPHER_GET_CTX_PARAMS, \ + (void (*)(void)) alg##_cbc_cts_get_ctx_params }, \ + { OSSL_FUNC_CIPHER_SET_CTX_PARAMS, \ + (void (*)(void)) alg##_cbc_cts_set_ctx_params }, \ + { OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS, \ + (void (*)(void)) alg##_cbc_cts_gettable_ctx_params }, \ + { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS, \ + (void (*)(void)) alg##_cbc_cts_settable_ctx_params }, \ + { 0, NULL } \ +}; + +OSSL_FUNC_cipher_update_fn ossl_cipher_cbc_cts_block_update; +OSSL_FUNC_cipher_final_fn ossl_cipher_cbc_cts_block_final; + +const char *ossl_cipher_cbc_cts_mode_id2name(unsigned int id); +int ossl_cipher_cbc_cts_mode_name2id(const char *name); -- cgit v1.2.1