Mercurial > hg > nginx
annotate src/core/ngx_sha1.h @ 8078:5244d3b165ff
SSL: single allocation in session cache on 32-bit platforms.
Given the present typical SSL session sizes, on 32-bit platforms it is
now beneficial to store all data in a single allocation, since rbtree
node + session id + ASN1 representation of a session takes 256 bytes of
shared memory (36 + 32 + 150 = about 218 bytes plus SNI server name).
Storing all data in a single allocation is beneficial for SNI names up to
about 40 characters long and makes it possible to store about 4000 sessions
in one megabyte (instead of about 3000 sessions now). This also slightly
simplifies the code.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Wed, 12 Oct 2022 20:14:40 +0300 |
parents | 9eefb38f0005 |
children |
rev | line source |
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1573 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4412 | 4 * Copyright (C) Nginx, Inc. |
1573 | 5 */ |
6 | |
7 | |
8 #ifndef _NGX_SHA1_H_INCLUDED_ | |
9 #define _NGX_SHA1_H_INCLUDED_ | |
10 | |
11 | |
12 #include <ngx_config.h> | |
13 #include <ngx_core.h> | |
14 | |
15 | |
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An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
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16 typedef struct { |
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17 uint64_t bytes; |
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18 uint32_t a, b, c, d, e, f; |
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19 u_char buffer[64]; |
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Maxim Dounin <mdounin@mdounin.ru>
parents:
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20 } ngx_sha1_t; |
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An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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21 |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4412
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22 |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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23 void ngx_sha1_init(ngx_sha1_t *ctx); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4412
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24 void ngx_sha1_update(ngx_sha1_t *ctx, const void *data, size_t size); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4412
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25 void ngx_sha1_final(u_char result[20], ngx_sha1_t *ctx); |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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26 |
1064ea81ed3a
An internal SHA1 implementation.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4412
diff
changeset
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27 |
1573 | 28 #endif /* _NGX_SHA1_H_INCLUDED_ */ |