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 #include <openssl/aes.h> 11 #include "prov/ciphercommon.h" 12 #include "prov/ciphercommon_ccm.h" 13 #include "crypto/aes_platform.h" 14 15 typedef struct prov_aes_ccm_ctx_st { 16 PROV_CCM_CTX base; /* Must be first */ 17 union { 18 OSSL_UNION_ALIGN; 19 /*- 20 * Padding is chosen so that s390x.kmac.k overlaps with ks.ks and 21 * fc with ks.ks.rounds. Remember that on s390x, an AES_KEY's 22 * rounds field is used to store the function code and that the key 23 * schedule is not stored (if aes hardware support is detected). 24 */ 25 struct { 26 unsigned char pad[16]; 27 AES_KEY ks; 28 } ks; 29 #if defined(OPENSSL_CPUID_OBJ) && defined(__s390__) 30 struct { 31 S390X_KMAC_PARAMS kmac; 32 unsigned long long blocks; 33 union { 34 unsigned long long g[2]; 35 unsigned char b[AES_BLOCK_SIZE]; 36 } nonce; 37 union { 38 unsigned long long g[2]; 39 unsigned char b[AES_BLOCK_SIZE]; 40 } buf; 41 unsigned char dummy_pad[168]; 42 unsigned int fc; /* fc has same offset as ks.ks.rounds */ 43 } s390x; 44 #endif /* defined(OPENSSL_CPUID_OBJ) && defined(__s390__) */ 45 } ccm; 46 } PROV_AES_CCM_CTX; 47 48 const PROV_CCM_HW *ossl_prov_aes_hw_ccm(size_t keylen); 49