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107 lines
4.6 KiB
C
107 lines
4.6 KiB
C
/*
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* Copyright 2019-2022 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#ifndef OSSL_PROV_CIPHERCOMMON_CCM_H
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# define OSSL_PROV_CIPHERCOMMON_CCM_H
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# pragma once
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# include "ciphercommon_aead.h"
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typedef struct prov_ccm_hw_st PROV_CCM_HW;
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# if defined(OPENSSL_CPUID_OBJ) && defined(__s390__)
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/*-
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* KMAC-AES parameter block - begin
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* (see z/Architecture Principles of Operation >= SA22-7832-08)
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*/
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typedef struct S390X_kmac_params_st {
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union {
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unsigned long long g[2];
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unsigned char b[16];
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} icv;
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unsigned char k[32];
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} S390X_KMAC_PARAMS;
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/* KMAC-AES parameter block - end */
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# endif
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/* Base structure that is shared by AES & ARIA for CCM MODE */
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typedef struct prov_ccm_st {
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unsigned int enc : 1;
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unsigned int key_set : 1; /* Set if key initialised */
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unsigned int iv_set : 1; /* Set if an iv is set */
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unsigned int tag_set : 1; /* Set if tag is valid */
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unsigned int len_set : 1; /* Set if message length set */
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size_t l, m; /* L and M parameters from RFC3610 */
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size_t keylen;
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size_t tls_aad_len; /* TLS AAD length */
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size_t tls_aad_pad_sz;
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unsigned char iv[GENERIC_BLOCK_SIZE];
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unsigned char buf[GENERIC_BLOCK_SIZE];
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CCM128_CONTEXT ccm_ctx;
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ccm128_f str;
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const PROV_CCM_HW *hw; /* hardware specific methods */
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} PROV_CCM_CTX;
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PROV_CIPHER_FUNC(int, CCM_cipher, (PROV_CCM_CTX *ctx, unsigned char *out, \
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size_t *padlen, const unsigned char *in, \
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size_t len));
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PROV_CIPHER_FUNC(int, CCM_setkey, (PROV_CCM_CTX *ctx, \
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const unsigned char *key, size_t keylen));
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PROV_CIPHER_FUNC(int, CCM_setiv, (PROV_CCM_CTX *dat, \
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const unsigned char *iv, size_t ivlen, \
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size_t mlen));
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PROV_CIPHER_FUNC(int, CCM_setaad, (PROV_CCM_CTX *ctx, \
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const unsigned char *aad, size_t aadlen));
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PROV_CIPHER_FUNC(int, CCM_auth_encrypt, (PROV_CCM_CTX *ctx, \
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const unsigned char *in, \
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unsigned char *out, size_t len, \
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unsigned char *tag, size_t taglen));
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PROV_CIPHER_FUNC(int, CCM_auth_decrypt, (PROV_CCM_CTX *ctx, \
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const unsigned char *in, \
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unsigned char *out, size_t len, \
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unsigned char *tag, size_t taglen));
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PROV_CIPHER_FUNC(int, CCM_gettag, (PROV_CCM_CTX *ctx, \
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unsigned char *tag, size_t taglen));
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/*
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* CCM Mode internal method table used to handle hardware specific differences,
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* (and different algorithms).
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*/
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struct prov_ccm_hw_st {
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OSSL_CCM_setkey_fn setkey;
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OSSL_CCM_setiv_fn setiv;
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OSSL_CCM_setaad_fn setaad;
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OSSL_CCM_auth_encrypt_fn auth_encrypt;
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OSSL_CCM_auth_decrypt_fn auth_decrypt;
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OSSL_CCM_gettag_fn gettag;
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};
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OSSL_FUNC_cipher_encrypt_init_fn ossl_ccm_einit;
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OSSL_FUNC_cipher_decrypt_init_fn ossl_ccm_dinit;
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OSSL_FUNC_cipher_get_ctx_params_fn ossl_ccm_get_ctx_params;
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OSSL_FUNC_cipher_set_ctx_params_fn ossl_ccm_set_ctx_params;
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OSSL_FUNC_cipher_update_fn ossl_ccm_stream_update;
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OSSL_FUNC_cipher_final_fn ossl_ccm_stream_final;
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OSSL_FUNC_cipher_cipher_fn ossl_ccm_cipher;
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void ossl_ccm_initctx(PROV_CCM_CTX *ctx, size_t keybits, const PROV_CCM_HW *hw);
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int ossl_ccm_generic_setiv(PROV_CCM_CTX *ctx, const unsigned char *nonce,
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size_t nlen, size_t mlen);
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int ossl_ccm_generic_setaad(PROV_CCM_CTX *ctx, const unsigned char *aad,
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size_t alen);
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int ossl_ccm_generic_gettag(PROV_CCM_CTX *ctx, unsigned char *tag, size_t tlen);
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int ossl_ccm_generic_auth_encrypt(PROV_CCM_CTX *ctx, const unsigned char *in,
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unsigned char *out, size_t len,
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unsigned char *tag, size_t taglen);
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int ossl_ccm_generic_auth_decrypt(PROV_CCM_CTX *ctx, const unsigned char *in,
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unsigned char *out, size_t len,
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unsigned char *expected_tag, size_t taglen);
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#endif
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