1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * The MORUS-640 Authenticated-Encryption Algorithm 4 * Common glue skeleton -- header file 5 * 6 * Copyright (c) 2016-2018 Ondrej Mosnacek <omosnacek@gmail.com> 7 * Copyright (C) 2017-2018 Red Hat, Inc. All rights reserved. 8 * 9 * This program is free software; you can redistribute it and/or modify it 10 * under the terms of the GNU General Public License as published by the Free 11 * Software Foundation; either version 2 of the License, or (at your option) 12 * any later version. 13 */ 14 15 #ifndef _CRYPTO_MORUS640_GLUE_H 16 #define _CRYPTO_MORUS640_GLUE_H 17 18 #include <linux/module.h> 19 #include <linux/types.h> 20 #include <crypto/algapi.h> 21 #include <crypto/aead.h> 22 #include <crypto/morus_common.h> 23 24 #define MORUS640_WORD_SIZE 4 25 #define MORUS640_BLOCK_SIZE (MORUS_BLOCK_WORDS * MORUS640_WORD_SIZE) 26 27 struct morus640_block { 28 u8 bytes[MORUS640_BLOCK_SIZE]; 29 }; 30 31 struct morus640_glue_ops { 32 void (*init)(void *state, const void *key, const void *iv); 33 void (*ad)(void *state, const void *data, unsigned int length); 34 void (*enc)(void *state, const void *src, void *dst, unsigned int length); 35 void (*dec)(void *state, const void *src, void *dst, unsigned int length); 36 void (*enc_tail)(void *state, const void *src, void *dst, unsigned int length); 37 void (*dec_tail)(void *state, const void *src, void *dst, unsigned int length); 38 void (*final)(void *state, void *tag_xor, u64 assoclen, u64 cryptlen); 39 }; 40 41 struct morus640_ctx { 42 const struct morus640_glue_ops *ops; 43 struct morus640_block key; 44 }; 45 46 void crypto_morus640_glue_init_ops(struct crypto_aead *aead, 47 const struct morus640_glue_ops *ops); 48 int crypto_morus640_glue_setkey(struct crypto_aead *aead, const u8 *key, 49 unsigned int keylen); 50 int crypto_morus640_glue_setauthsize(struct crypto_aead *tfm, 51 unsigned int authsize); 52 int crypto_morus640_glue_encrypt(struct aead_request *req); 53 int crypto_morus640_glue_decrypt(struct aead_request *req); 54 55 int cryptd_morus640_glue_setkey(struct crypto_aead *aead, const u8 *key, 56 unsigned int keylen); 57 int cryptd_morus640_glue_setauthsize(struct crypto_aead *aead, 58 unsigned int authsize); 59 int cryptd_morus640_glue_encrypt(struct aead_request *req); 60 int cryptd_morus640_glue_decrypt(struct aead_request *req); 61 int cryptd_morus640_glue_init_tfm(struct crypto_aead *aead); 62 void cryptd_morus640_glue_exit_tfm(struct crypto_aead *aead); 63 64 #define MORUS640_DECLARE_ALGS(id, driver_name, priority) \ 65 static const struct morus640_glue_ops crypto_morus640_##id##_ops = {\ 66 .init = crypto_morus640_##id##_init, \ 67 .ad = crypto_morus640_##id##_ad, \ 68 .enc = crypto_morus640_##id##_enc, \ 69 .enc_tail = crypto_morus640_##id##_enc_tail, \ 70 .dec = crypto_morus640_##id##_dec, \ 71 .dec_tail = crypto_morus640_##id##_dec_tail, \ 72 .final = crypto_morus640_##id##_final, \ 73 }; \ 74 \ 75 static int crypto_morus640_##id##_init_tfm(struct crypto_aead *tfm) \ 76 { \ 77 crypto_morus640_glue_init_ops(tfm, &crypto_morus640_##id##_ops); \ 78 return 0; \ 79 } \ 80 \ 81 static void crypto_morus640_##id##_exit_tfm(struct crypto_aead *tfm) \ 82 { \ 83 } \ 84 \ 85 struct aead_alg crypto_morus640_##id##_algs[] = {\ 86 { \ 87 .setkey = crypto_morus640_glue_setkey, \ 88 .setauthsize = crypto_morus640_glue_setauthsize, \ 89 .encrypt = crypto_morus640_glue_encrypt, \ 90 .decrypt = crypto_morus640_glue_decrypt, \ 91 .init = crypto_morus640_##id##_init_tfm, \ 92 .exit = crypto_morus640_##id##_exit_tfm, \ 93 \ 94 .ivsize = MORUS_NONCE_SIZE, \ 95 .maxauthsize = MORUS_MAX_AUTH_SIZE, \ 96 .chunksize = MORUS640_BLOCK_SIZE, \ 97 \ 98 .base = { \ 99 .cra_flags = CRYPTO_ALG_INTERNAL, \ 100 .cra_blocksize = 1, \ 101 .cra_ctxsize = sizeof(struct morus640_ctx), \ 102 .cra_alignmask = 0, \ 103 \ 104 .cra_name = "__morus640", \ 105 .cra_driver_name = "__"driver_name, \ 106 \ 107 .cra_module = THIS_MODULE, \ 108 } \ 109 }, { \ 110 .setkey = cryptd_morus640_glue_setkey, \ 111 .setauthsize = cryptd_morus640_glue_setauthsize, \ 112 .encrypt = cryptd_morus640_glue_encrypt, \ 113 .decrypt = cryptd_morus640_glue_decrypt, \ 114 .init = cryptd_morus640_glue_init_tfm, \ 115 .exit = cryptd_morus640_glue_exit_tfm, \ 116 \ 117 .ivsize = MORUS_NONCE_SIZE, \ 118 .maxauthsize = MORUS_MAX_AUTH_SIZE, \ 119 .chunksize = MORUS640_BLOCK_SIZE, \ 120 \ 121 .base = { \ 122 .cra_flags = CRYPTO_ALG_ASYNC, \ 123 .cra_blocksize = 1, \ 124 .cra_ctxsize = sizeof(struct crypto_aead *), \ 125 .cra_alignmask = 0, \ 126 \ 127 .cra_priority = priority, \ 128 \ 129 .cra_name = "morus640", \ 130 .cra_driver_name = driver_name, \ 131 \ 132 .cra_module = THIS_MODULE, \ 133 } \ 134 } \ 135 } 136 137 #endif /* _CRYPTO_MORUS640_GLUE_H */ 138