1 /* 2 * Copyright 2019-2021 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 "ciphercommon_aead.h" 11 12 typedef struct prov_ccm_hw_st PROV_CCM_HW; 13 14 #if defined(OPENSSL_CPUID_OBJ) && defined(__s390__) 15 /*- 16 * KMAC-AES parameter block - begin 17 * (see z/Architecture Principles of Operation >= SA22-7832-08) 18 */ 19 typedef struct S390X_kmac_params_st { 20 union { 21 unsigned long long g[2]; 22 unsigned char b[16]; 23 } icv; 24 unsigned char k[32]; 25 } S390X_KMAC_PARAMS; 26 /* KMAC-AES parameter block - end */ 27 #endif 28 29 /* Base structure that is shared by AES & ARIA for CCM MODE */ 30 typedef struct prov_ccm_st { 31 unsigned int enc : 1; 32 unsigned int key_set : 1; /* Set if key initialised */ 33 unsigned int iv_set : 1; /* Set if an iv is set */ 34 unsigned int tag_set : 1; /* Set if tag is valid */ 35 unsigned int len_set : 1; /* Set if message length set */ 36 size_t l, m; /* L and M parameters from RFC3610 */ 37 size_t keylen; 38 size_t tls_aad_len; /* TLS AAD length */ 39 size_t tls_aad_pad_sz; 40 unsigned char iv[GENERIC_BLOCK_SIZE]; 41 unsigned char buf[GENERIC_BLOCK_SIZE]; 42 CCM128_CONTEXT ccm_ctx; 43 ccm128_f str; 44 const PROV_CCM_HW *hw; /* hardware specific methods */ 45 } PROV_CCM_CTX; 46 47 PROV_CIPHER_FUNC(int, CCM_cipher, (PROV_CCM_CTX *ctx, unsigned char *out, \ 48 size_t *padlen, const unsigned char *in, \ 49 size_t len)); 50 PROV_CIPHER_FUNC(int, CCM_setkey, (PROV_CCM_CTX *ctx, \ 51 const unsigned char *key, size_t keylen)); 52 PROV_CIPHER_FUNC(int, CCM_setiv, (PROV_CCM_CTX *dat, \ 53 const unsigned char *iv, size_t ivlen, \ 54 size_t mlen)); 55 PROV_CIPHER_FUNC(int, CCM_setaad, (PROV_CCM_CTX *ctx, \ 56 const unsigned char *aad, size_t aadlen)); 57 PROV_CIPHER_FUNC(int, CCM_auth_encrypt, (PROV_CCM_CTX *ctx, \ 58 const unsigned char *in, \ 59 unsigned char *out, size_t len, \ 60 unsigned char *tag, size_t taglen)); 61 PROV_CIPHER_FUNC(int, CCM_auth_decrypt, (PROV_CCM_CTX *ctx, \ 62 const unsigned char *in, \ 63 unsigned char *out, size_t len, \ 64 unsigned char *tag, size_t taglen)); 65 PROV_CIPHER_FUNC(int, CCM_gettag, (PROV_CCM_CTX *ctx, \ 66 unsigned char *tag, size_t taglen)); 67 68 /* 69 * CCM Mode internal method table used to handle hardware specific differences, 70 * (and different algorithms). 71 */ 72 struct prov_ccm_hw_st { 73 OSSL_CCM_setkey_fn setkey; 74 OSSL_CCM_setiv_fn setiv; 75 OSSL_CCM_setaad_fn setaad; 76 OSSL_CCM_auth_encrypt_fn auth_encrypt; 77 OSSL_CCM_auth_decrypt_fn auth_decrypt; 78 OSSL_CCM_gettag_fn gettag; 79 }; 80 81 OSSL_FUNC_cipher_encrypt_init_fn ossl_ccm_einit; 82 OSSL_FUNC_cipher_decrypt_init_fn ossl_ccm_dinit; 83 OSSL_FUNC_cipher_get_ctx_params_fn ossl_ccm_get_ctx_params; 84 OSSL_FUNC_cipher_set_ctx_params_fn ossl_ccm_set_ctx_params; 85 OSSL_FUNC_cipher_update_fn ossl_ccm_stream_update; 86 OSSL_FUNC_cipher_final_fn ossl_ccm_stream_final; 87 OSSL_FUNC_cipher_cipher_fn ossl_ccm_cipher; 88 void ossl_ccm_initctx(PROV_CCM_CTX *ctx, size_t keybits, const PROV_CCM_HW *hw); 89 90 int ossl_ccm_generic_setiv(PROV_CCM_CTX *ctx, const unsigned char *nonce, 91 size_t nlen, size_t mlen); 92 int ossl_ccm_generic_setaad(PROV_CCM_CTX *ctx, const unsigned char *aad, 93 size_t alen); 94 int ossl_ccm_generic_gettag(PROV_CCM_CTX *ctx, unsigned char *tag, size_t tlen); 95 int ossl_ccm_generic_auth_encrypt(PROV_CCM_CTX *ctx, const unsigned char *in, 96 unsigned char *out, size_t len, 97 unsigned char *tag, size_t taglen); 98 int ossl_ccm_generic_auth_decrypt(PROV_CCM_CTX *ctx, const unsigned char *in, 99 unsigned char *out, size_t len, 100 unsigned char *expected_tag, size_t taglen); 101