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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Current File : //proc/thread-self/root/usr/share/doc/openssh/PROTOCOL.key
This document describes the private key format for OpenSSH.

1. Overall format

The key consists of a header, a list of public keys, and
an encrypted list of matching private keys.

#define AUTH_MAGIC      "openssh-key-v1"

	byte[]	AUTH_MAGIC
	string	ciphername
	string	kdfname
	string	kdfoptions
	int	number of keys N
	string	publickey1
	string	publickey2
	...
	string	publickeyN
	string	encrypted, padded list of private keys

2. KDF options for kdfname "bcrypt"

The options:

	string salt
	uint32 rounds

are concatenated and represented as a string.

3. Unencrypted list of N private keys

The list of privatekey/comment pairs is padded with the
bytes 1, 2, 3, ... until the total length is a multiple
of the cipher block size.

	uint32	checkint
	uint32	checkint
	string	privatekey1
	string	comment1
	string	privatekey2
	string	comment2
	...
	string	privatekeyN
	string	commentN
	char	1
	char	2
	char	3
	...
	char	padlen % 255

Before the key is encrypted, a random integer is assigned
to both checkint fields so successful decryption can be
quickly checked by verifying that both checkint fields
hold the same value.

4. Encryption

The KDF is used to derive a key, IV (and other values required by
the cipher) from the passphrase. These values are then used to
encrypt the unencrypted list of private keys.

5. No encryption

For unencrypted keys the cipher "none" and the KDF "none"
are used with empty passphrases. The options if the KDF "none"
are the empty string.

$OpenBSD: PROTOCOL.key,v 1.1 2013/12/06 13:34:54 markus Exp $

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