晋太元中,武陵人捕鱼为业。缘溪行,忘路之远近。忽逢桃花林,夹岸数百步,中无杂树,芳草鲜美,落英缤纷。渔人甚异之,复前行,欲穷其林。 林尽水源,便得一山,山有小口,仿佛若有光。便舍船,从口入。初极狭,才通人。复行数十步,豁然开朗。土地平旷,屋舍俨然,有良田、美池、桑竹之属。阡陌交通,鸡犬相闻。其中往来种作,男女衣着,悉如外人。黄发垂髫,并怡然自乐。 见渔人,乃大惊,问所从来。具答之。便要还家,设酒杀鸡作食。村中闻有此人,咸来问讯。自云先世避秦时乱,率妻子邑人来此绝境,不复出焉,遂与外人间隔。问今是何世,乃不知有汉,无论魏晋。此人一一为具言所闻,皆叹惋。余人各复延至其家,皆出酒食。停数日,辞去。此中人语云:“不足为外人道也。”(间隔 一作:隔绝) 既出,得其船,便扶向路,处处志之。及郡下,诣太守,说如此。太守即遣人随其往,寻向所志,遂迷,不复得路。 南阳刘子骥,高尚士也,闻之,欣然规往。未果,寻病终。后遂无问津者。
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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
/*! \file isc/hmacsha.h
* This is the header file for the HMAC-SHA1, HMAC-SHA224, HMAC-SHA256,
* HMAC-SHA334 and HMAC-SHA512 hash algorithm described in RFC 2104.
*/
#ifndef ISC_HMACSHA_H
#define ISC_HMACSHA_H 1
#include <stdbool.h>
#include <isc/lang.h>
#include <isc/platform.h>
#include <isc/sha1.h>
#include <isc/sha2.h>
#include <isc/types.h>
#define ISC_HMACSHA1_KEYLENGTH ISC_SHA1_BLOCK_LENGTH
#define ISC_HMACSHA224_KEYLENGTH ISC_SHA224_BLOCK_LENGTH
#define ISC_HMACSHA256_KEYLENGTH ISC_SHA256_BLOCK_LENGTH
#define ISC_HMACSHA384_KEYLENGTH ISC_SHA384_BLOCK_LENGTH
#define ISC_HMACSHA512_KEYLENGTH ISC_SHA512_BLOCK_LENGTH
#ifdef ISC_PLATFORM_OPENSSLHASH
#include <openssl/opensslv.h>
#include <openssl/hmac.h>
typedef struct {
HMAC_CTX *ctx;
#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
HMAC_CTX _ctx;
#endif
} isc_hmacsha_t;
typedef isc_hmacsha_t isc_hmacsha1_t;
typedef isc_hmacsha_t isc_hmacsha224_t;
typedef isc_hmacsha_t isc_hmacsha256_t;
typedef isc_hmacsha_t isc_hmacsha384_t;
typedef isc_hmacsha_t isc_hmacsha512_t;
#elif PKCS11CRYPTO
#include <pk11/pk11.h>
typedef pk11_context_t isc_hmacsha1_t;
typedef pk11_context_t isc_hmacsha224_t;
typedef pk11_context_t isc_hmacsha256_t;
typedef pk11_context_t isc_hmacsha384_t;
typedef pk11_context_t isc_hmacsha512_t;
#else
typedef struct {
isc_sha1_t sha1ctx;
unsigned char key[ISC_HMACSHA1_KEYLENGTH];
} isc_hmacsha1_t;
typedef struct {
isc_sha224_t sha224ctx;
unsigned char key[ISC_HMACSHA224_KEYLENGTH];
} isc_hmacsha224_t;
typedef struct {
isc_sha256_t sha256ctx;
unsigned char key[ISC_HMACSHA256_KEYLENGTH];
} isc_hmacsha256_t;
typedef struct {
isc_sha384_t sha384ctx;
unsigned char key[ISC_HMACSHA384_KEYLENGTH];
} isc_hmacsha384_t;
typedef struct {
isc_sha512_t sha512ctx;
unsigned char key[ISC_HMACSHA512_KEYLENGTH];
} isc_hmacsha512_t;
#endif
ISC_LANG_BEGINDECLS
void
isc_hmacsha1_init(isc_hmacsha1_t *ctx, const unsigned char *key,
unsigned int len);
void
isc_hmacsha1_invalidate(isc_hmacsha1_t *ctx);
void
isc_hmacsha1_update(isc_hmacsha1_t *ctx, const unsigned char *buf,
unsigned int len);
void
isc_hmacsha1_sign(isc_hmacsha1_t *ctx, unsigned char *digest, size_t len);
bool
isc_hmacsha1_verify(isc_hmacsha1_t *ctx, unsigned char *digest, size_t len);
bool
isc_hmacsha1_check(int testing);
void
isc_hmacsha224_init(isc_hmacsha224_t *ctx, const unsigned char *key,
unsigned int len);
void
isc_hmacsha224_invalidate(isc_hmacsha224_t *ctx);
void
isc_hmacsha224_update(isc_hmacsha224_t *ctx, const unsigned char *buf,
unsigned int len);
void
isc_hmacsha224_sign(isc_hmacsha224_t *ctx, unsigned char *digest, size_t len);
bool
isc_hmacsha224_verify(isc_hmacsha224_t *ctx, unsigned char *digest, size_t len);
void
isc_hmacsha256_init(isc_hmacsha256_t *ctx, const unsigned char *key,
unsigned int len);
void
isc_hmacsha256_invalidate(isc_hmacsha256_t *ctx);
void
isc_hmacsha256_update(isc_hmacsha256_t *ctx, const unsigned char *buf,
unsigned int len);
void
isc_hmacsha256_sign(isc_hmacsha256_t *ctx, unsigned char *digest, size_t len);
bool
isc_hmacsha256_verify(isc_hmacsha256_t *ctx, unsigned char *digest, size_t len);
void
isc_hmacsha384_init(isc_hmacsha384_t *ctx, const unsigned char *key,
unsigned int len);
void
isc_hmacsha384_invalidate(isc_hmacsha384_t *ctx);
void
isc_hmacsha384_update(isc_hmacsha384_t *ctx, const unsigned char *buf,
unsigned int len);
void
isc_hmacsha384_sign(isc_hmacsha384_t *ctx, unsigned char *digest, size_t len);
bool
isc_hmacsha384_verify(isc_hmacsha384_t *ctx, unsigned char *digest, size_t len);
void
isc_hmacsha512_init(isc_hmacsha512_t *ctx, const unsigned char *key,
unsigned int len);
void
isc_hmacsha512_invalidate(isc_hmacsha512_t *ctx);
void
isc_hmacsha512_update(isc_hmacsha512_t *ctx, const unsigned char *buf,
unsigned int len);
void
isc_hmacsha512_sign(isc_hmacsha512_t *ctx, unsigned char *digest, size_t len);
bool
isc_hmacsha512_verify(isc_hmacsha512_t *ctx, unsigned char *digest, size_t len);
ISC_LANG_ENDDECLS
#endif /* ISC_HMACSHA_H */