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      1 /*
      2  * Copyright 2019-2020 The OpenSSL Project Authors. All Rights Reserved.
      3  *
      4  * Licensed under the Apache License 2.0 (the "License").  You may not use
      5  * this file except in compliance with the License.  You can obtain a copy
      6  * in the file LICENSE in the source distribution or at
      7  * https://www.openssl.org/source/license.html
      8  */
      9 
     10 /*
     11  * AES low level APIs are deprecated for public use, but still ok for internal
     12  * use where we're using them to implement the higher level EVP interface, as is
     13  * the case here.
     14  */
     15 #include "internal/deprecated.h"
     16 
     17 /* Dispatch functions for AES cipher modes ecb, cbc, ofb, cfb, ctr */
     18 
     19 #include "cipher_aes.h"
     20 #include "prov/implementations.h"
     21 #include "prov/providercommon.h"
     22 
     23 static OSSL_FUNC_cipher_freectx_fn aes_freectx;
     24 static OSSL_FUNC_cipher_dupctx_fn aes_dupctx;
     25 
     26 static void aes_freectx(void *vctx)
     27 {
     28     PROV_AES_CTX *ctx = (PROV_AES_CTX *)vctx;
     29 
     30     ossl_cipher_generic_reset_ctx((PROV_CIPHER_CTX *)vctx);
     31     OPENSSL_clear_free(ctx, sizeof(*ctx));
     32 }
     33 
     34 static void *aes_dupctx(void *ctx)
     35 {
     36     PROV_AES_CTX *in = (PROV_AES_CTX *)ctx;
     37     PROV_AES_CTX *ret;
     38 
     39     if (!ossl_prov_is_running())
     40         return NULL;
     41 
     42     ret = OPENSSL_malloc(sizeof(*ret));
     43     if (ret == NULL)
     44         return NULL;
     45     in->base.hw->copyctx(&ret->base, &in->base);
     46 
     47     return ret;
     48 }
     49 
     50 /* ossl_aes256ecb_functions */
     51 IMPLEMENT_generic_cipher(aes, AES, ecb, ECB, 0, 256, 128, 0, block)
     52 /* ossl_aes192ecb_functions */
     53 IMPLEMENT_generic_cipher(aes, AES, ecb, ECB, 0, 192, 128, 0, block)
     54 /* ossl_aes128ecb_functions */
     55 IMPLEMENT_generic_cipher(aes, AES, ecb, ECB, 0, 128, 128, 0, block)
     56 /* ossl_aes256cbc_functions */
     57 IMPLEMENT_generic_cipher(aes, AES, cbc, CBC, 0, 256, 128, 128, block)
     58 /* ossl_aes192cbc_functions */
     59 IMPLEMENT_generic_cipher(aes, AES, cbc, CBC, 0, 192, 128, 128, block)
     60 /* ossl_aes128cbc_functions */
     61 IMPLEMENT_generic_cipher(aes, AES, cbc, CBC, 0, 128, 128, 128, block)
     62 /* ossl_aes256ofb_functions */
     63 IMPLEMENT_generic_cipher(aes, AES, ofb, OFB, 0, 256, 8, 128, stream)
     64 /* ossl_aes192ofb_functions */
     65 IMPLEMENT_generic_cipher(aes, AES, ofb, OFB, 0, 192, 8, 128, stream)
     66 /* ossl_aes128ofb_functions */
     67 IMPLEMENT_generic_cipher(aes, AES, ofb, OFB, 0, 128, 8, 128, stream)
     68 /* ossl_aes256cfb_functions */
     69 IMPLEMENT_generic_cipher(aes, AES, cfb, CFB, 0, 256, 8, 128, stream)
     70 /* ossl_aes192cfb_functions */
     71 IMPLEMENT_generic_cipher(aes, AES, cfb, CFB, 0, 192, 8, 128, stream)
     72 /* ossl_aes128cfb_functions */
     73 IMPLEMENT_generic_cipher(aes, AES, cfb, CFB, 0, 128, 8, 128, stream)
     74 /* ossl_aes256cfb1_functions */
     75 IMPLEMENT_generic_cipher(aes, AES, cfb1, CFB, 0, 256, 8, 128, stream)
     76 /* ossl_aes192cfb1_functions */
     77 IMPLEMENT_generic_cipher(aes, AES, cfb1, CFB, 0, 192, 8, 128, stream)
     78 /* ossl_aes128cfb1_functions */
     79 IMPLEMENT_generic_cipher(aes, AES, cfb1, CFB, 0, 128, 8, 128, stream)
     80 /* ossl_aes256cfb8_functions */
     81 IMPLEMENT_generic_cipher(aes, AES, cfb8, CFB, 0, 256, 8, 128, stream)
     82 /* ossl_aes192cfb8_functions */
     83 IMPLEMENT_generic_cipher(aes, AES, cfb8, CFB, 0, 192, 8, 128, stream)
     84 /* ossl_aes128cfb8_functions */
     85 IMPLEMENT_generic_cipher(aes, AES, cfb8, CFB, 0, 128, 8, 128, stream)
     86 /* ossl_aes256ctr_functions */
     87 IMPLEMENT_generic_cipher(aes, AES, ctr, CTR, 0, 256, 8, 128, stream)
     88 /* ossl_aes192ctr_functions */
     89 IMPLEMENT_generic_cipher(aes, AES, ctr, CTR, 0, 192, 8, 128, stream)
     90 /* ossl_aes128ctr_functions */
     91 IMPLEMENT_generic_cipher(aes, AES, ctr, CTR, 0, 128, 8, 128, stream)
     92 
     93 #include "cipher_aes_cts.inc"
     94