| 1 | /*
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| 2 | * Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include "ciphercommon_aead.h"
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| 11 |
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| 12 | typedef struct prov_ccm_hw_st PROV_CCM_HW;
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| 13 |
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| 14 | #if defined(OPENSSL_CPUID_OBJ) && defined(__s390__)
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| 15 | /*-
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| 16 | * KMAC-AES parameter block - begin
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| 17 | * (see z/Architecture Principles of Operation >= SA22-7832-08)
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| 18 | */
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| 19 | typedef struct S390X_kmac_params_st {
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| 20 | union {
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| 21 | unsigned long long g[2];
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| 22 | unsigned char b[16];
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| 23 | } icv;
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| 24 | unsigned char k[32];
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| 25 | } S390X_KMAC_PARAMS;
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| 26 | /* KMAC-AES parameter block - end */
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| 27 | #endif
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| 28 |
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| 29 | /* Base structure that is shared by AES & ARIA for CCM MODE */
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| 30 | typedef struct prov_ccm_st {
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| 31 | unsigned int enc : 1;
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| 32 | unsigned int key_set : 1; /* Set if key initialised */
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| 33 | unsigned int iv_set : 1; /* Set if an iv is set */
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| 34 | unsigned int tag_set : 1; /* Set if tag is valid */
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| 35 | unsigned int len_set : 1; /* Set if message length set */
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| 36 | size_t l, m; /* L and M parameters from RFC3610 */
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| 37 | size_t keylen;
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| 38 | size_t tls_aad_len; /* TLS AAD length */
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| 39 | size_t tls_aad_pad_sz;
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| 40 | unsigned char iv[GENERIC_BLOCK_SIZE];
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| 41 | unsigned char buf[GENERIC_BLOCK_SIZE];
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| 42 | CCM128_CONTEXT ccm_ctx;
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| 43 | ccm128_f str;
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| 44 | const PROV_CCM_HW *hw; /* hardware specific methods */
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| 45 | } PROV_CCM_CTX;
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| 46 |
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| 47 | PROV_CIPHER_FUNC(int, CCM_cipher, (PROV_CCM_CTX *ctx, unsigned char *out, \
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| 48 | size_t *padlen, const unsigned char *in, \
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| 49 | size_t len));
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| 50 | PROV_CIPHER_FUNC(int, CCM_setkey, (PROV_CCM_CTX *ctx, \
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| 51 | const unsigned char *key, size_t keylen));
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| 52 | PROV_CIPHER_FUNC(int, CCM_setiv, (PROV_CCM_CTX *dat, \
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| 53 | const unsigned char *iv, size_t ivlen, \
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| 54 | size_t mlen));
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| 55 | PROV_CIPHER_FUNC(int, CCM_setaad, (PROV_CCM_CTX *ctx, \
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| 56 | const unsigned char *aad, size_t aadlen));
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| 57 | PROV_CIPHER_FUNC(int, CCM_auth_encrypt, (PROV_CCM_CTX *ctx, \
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| 58 | const unsigned char *in, \
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| 59 | unsigned char *out, size_t len, \
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| 60 | unsigned char *tag, size_t taglen));
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| 61 | PROV_CIPHER_FUNC(int, CCM_auth_decrypt, (PROV_CCM_CTX *ctx, \
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| 62 | const unsigned char *in, \
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| 63 | unsigned char *out, size_t len, \
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| 64 | unsigned char *tag, size_t taglen));
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| 65 | PROV_CIPHER_FUNC(int, CCM_gettag, (PROV_CCM_CTX *ctx, \
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| 66 | unsigned char *tag, size_t taglen));
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| 67 |
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| 68 | /*
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| 69 | * CCM Mode internal method table used to handle hardware specific differences,
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| 70 | * (and different algorithms).
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| 71 | */
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| 72 | struct prov_ccm_hw_st {
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| 73 | OSSL_CCM_setkey_fn setkey;
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| 74 | OSSL_CCM_setiv_fn setiv;
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| 75 | OSSL_CCM_setaad_fn setaad;
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| 76 | OSSL_CCM_auth_encrypt_fn auth_encrypt;
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| 77 | OSSL_CCM_auth_decrypt_fn auth_decrypt;
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| 78 | OSSL_CCM_gettag_fn gettag;
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| 79 | };
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| 80 |
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| 81 | OSSL_FUNC_cipher_encrypt_init_fn ossl_ccm_einit;
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| 82 | OSSL_FUNC_cipher_decrypt_init_fn ossl_ccm_dinit;
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| 83 | OSSL_FUNC_cipher_get_ctx_params_fn ossl_ccm_get_ctx_params;
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| 84 | OSSL_FUNC_cipher_set_ctx_params_fn ossl_ccm_set_ctx_params;
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| 85 | OSSL_FUNC_cipher_update_fn ossl_ccm_stream_update;
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| 86 | OSSL_FUNC_cipher_final_fn ossl_ccm_stream_final;
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| 87 | OSSL_FUNC_cipher_cipher_fn ossl_ccm_cipher;
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| 88 | void ossl_ccm_initctx(PROV_CCM_CTX *ctx, size_t keybits, const PROV_CCM_HW *hw);
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| 89 |
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| 90 | int ossl_ccm_generic_setiv(PROV_CCM_CTX *ctx, const unsigned char *nonce,
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| 91 | size_t nlen, size_t mlen);
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| 92 | int ossl_ccm_generic_setaad(PROV_CCM_CTX *ctx, const unsigned char *aad,
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| 93 | size_t alen);
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| 94 | int ossl_ccm_generic_gettag(PROV_CCM_CTX *ctx, unsigned char *tag, size_t tlen);
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| 95 | int ossl_ccm_generic_auth_encrypt(PROV_CCM_CTX *ctx, const unsigned char *in,
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| 96 | unsigned char *out, size_t len,
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| 97 | unsigned char *tag, size_t taglen);
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| 98 | int ossl_ccm_generic_auth_decrypt(PROV_CCM_CTX *ctx, const unsigned char *in,
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| 99 | unsigned char *out, size_t len,
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| 100 | unsigned char *expected_tag, size_t taglen);
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