Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
| 2 | * All rights reserved. |
| 3 | * |
| 4 | * This package is an SSL implementation written |
| 5 | * by Eric Young (eay@cryptsoft.com). |
| 6 | * The implementation was written so as to conform with Netscapes SSL. |
| 7 | * |
| 8 | * This library is free for commercial and non-commercial use as long as |
| 9 | * the following conditions are aheared to. The following conditions |
| 10 | * apply to all code found in this distribution, be it the RC4, RSA, |
| 11 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
| 12 | * included with this distribution is covered by the same copyright terms |
| 13 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
| 14 | * |
| 15 | * Copyright remains Eric Young's, and as such any Copyright notices in |
| 16 | * the code are not to be removed. |
| 17 | * If this package is used in a product, Eric Young should be given attribution |
| 18 | * as the author of the parts of the library used. |
| 19 | * This can be in the form of a textual message at program startup or |
| 20 | * in documentation (online or textual) provided with the package. |
| 21 | * |
| 22 | * Redistribution and use in source and binary forms, with or without |
| 23 | * modification, are permitted provided that the following conditions |
| 24 | * are met: |
| 25 | * 1. Redistributions of source code must retain the copyright |
| 26 | * notice, this list of conditions and the following disclaimer. |
| 27 | * 2. Redistributions in binary form must reproduce the above copyright |
| 28 | * notice, this list of conditions and the following disclaimer in the |
| 29 | * documentation and/or other materials provided with the distribution. |
| 30 | * 3. All advertising materials mentioning features or use of this software |
| 31 | * must display the following acknowledgement: |
| 32 | * "This product includes cryptographic software written by |
| 33 | * Eric Young (eay@cryptsoft.com)" |
| 34 | * The word 'cryptographic' can be left out if the rouines from the library |
| 35 | * being used are not cryptographic related :-). |
| 36 | * 4. If you include any Windows specific code (or a derivative thereof) from |
| 37 | * the apps directory (application code) you must include an acknowledgement: |
| 38 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
| 39 | * |
| 40 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
| 41 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 42 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 43 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 44 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 45 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 46 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 48 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 49 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 50 | * SUCH DAMAGE. |
| 51 | * |
| 52 | * The licence and distribution terms for any publically available version or |
| 53 | * derivative of this code cannot be changed. i.e. this code cannot simply be |
| 54 | * copied and put under another distribution licence |
| 55 | * [including the GNU Public Licence.] */ |
| 56 | |
| 57 | #ifndef OPENSSL_HEADER_CIPHER_INTERNAL_H |
| 58 | #define OPENSSL_HEADER_CIPHER_INTERNAL_H |
| 59 | |
| 60 | #include <openssl/base.h> |
| 61 | |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 62 | #include <openssl/aead.h> |
Robert Sloan | 572a4e2 | 2017-04-17 10:52:19 -0700 | [diff] [blame] | 63 | #include <openssl/aes.h> |
| 64 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 65 | #include "../../internal.h" |
| 66 | #include "../modes/internal.h" |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 67 | |
| 68 | #if defined(__cplusplus) |
| 69 | extern "C" { |
| 70 | #endif |
| 71 | |
| 72 | |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 73 | /* EVP_CIPH_MODE_MASK contains the bits of |flags| that represent the mode. */ |
| 74 | #define EVP_CIPH_MODE_MASK 0x3f |
| 75 | |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 76 | /* EVP_AEAD represents a specific AEAD algorithm. */ |
| 77 | struct evp_aead_st { |
| 78 | uint8_t key_len; |
| 79 | uint8_t nonce_len; |
| 80 | uint8_t overhead; |
| 81 | uint8_t max_tag_len; |
Robert Sloan | 927a495 | 2017-07-03 11:25:09 -0700 | [diff] [blame] | 82 | int seal_scatter_supports_extra_in; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 83 | |
Adam Langley | 53b272a | 2015-06-04 17:45:09 -0700 | [diff] [blame] | 84 | /* init initialises an |EVP_AEAD_CTX|. If this call returns zero then |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 85 | * |cleanup| will not be called for that context. */ |
Adam Langley | 53b272a | 2015-06-04 17:45:09 -0700 | [diff] [blame] | 86 | int (*init)(EVP_AEAD_CTX *, const uint8_t *key, size_t key_len, |
| 87 | size_t tag_len); |
| 88 | int (*init_with_direction)(EVP_AEAD_CTX *, const uint8_t *key, size_t key_len, |
| 89 | size_t tag_len, enum evp_aead_direction_t dir); |
| 90 | void (*cleanup)(EVP_AEAD_CTX *); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 91 | |
Adam Langley | 53b272a | 2015-06-04 17:45:09 -0700 | [diff] [blame] | 92 | int (*open)(const EVP_AEAD_CTX *ctx, uint8_t *out, size_t *out_len, |
| 93 | size_t max_out_len, const uint8_t *nonce, size_t nonce_len, |
| 94 | const uint8_t *in, size_t in_len, const uint8_t *ad, |
| 95 | size_t ad_len); |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 96 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 97 | int (*seal_scatter)(const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag, |
| 98 | size_t *out_tag_len, size_t max_out_tag_len, |
| 99 | const uint8_t *nonce, size_t nonce_len, const uint8_t *in, |
Robert Sloan | 927a495 | 2017-07-03 11:25:09 -0700 | [diff] [blame] | 100 | size_t in_len, const uint8_t *extra_in, |
| 101 | size_t extra_in_len, const uint8_t *ad, size_t ad_len); |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 102 | |
| 103 | int (*open_gather)(const EVP_AEAD_CTX *ctx, uint8_t *out, |
| 104 | const uint8_t *nonce, size_t nonce_len, const uint8_t *in, |
| 105 | size_t in_len, const uint8_t *in_tag, size_t in_tag_len, |
| 106 | const uint8_t *ad, size_t ad_len); |
| 107 | |
Adam Langley | fad6327 | 2015-11-12 12:15:39 -0800 | [diff] [blame] | 108 | int (*get_iv)(const EVP_AEAD_CTX *ctx, const uint8_t **out_iv, |
| 109 | size_t *out_len); |
Robert Sloan | fe7cd21 | 2017-08-07 09:03:39 -0700 | [diff] [blame] | 110 | |
| 111 | size_t (*tag_len)(const EVP_AEAD_CTX *ctx, size_t in_Len, |
| 112 | size_t extra_in_len); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 113 | }; |
| 114 | |
Robert Sloan | 572a4e2 | 2017-04-17 10:52:19 -0700 | [diff] [blame] | 115 | /* aes_ctr_set_key initialises |*aes_key| using |key_bytes| bytes from |key|, |
| 116 | * where |key_bytes| must either be 16, 24 or 32. If not NULL, |*out_block| is |
| 117 | * set to a function that encrypts single blocks. If not NULL, |*gcm_ctx| is |
| 118 | * initialised to do GHASH with the given key. It returns a function for |
| 119 | * optimised CTR-mode, or NULL if CTR-mode should be built using |
| 120 | * |*out_block|. */ |
| 121 | ctr128_f aes_ctr_set_key(AES_KEY *aes_key, GCM128_CONTEXT *gcm_ctx, |
| 122 | block128_f *out_block, const uint8_t *key, |
| 123 | size_t key_bytes); |
| 124 | |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 125 | #if defined(__cplusplus) |
| 126 | } /* extern C */ |
| 127 | #endif |
| 128 | |
| 129 | #endif /* OPENSSL_HEADER_CIPHER_INTERNAL_H */ |