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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# A reasonable default for today's standards. It should provide
# 112-bit security with the exception of SHA1 signatures needed for DNSSec
# and other still prevalent legacy use of SHA1 signatures.
# MACs: all HMAC with SHA1 or better + all modern MACs (Poly1305 etc)
# Curves: all prime >= 255 bits (including Bernstein curves)
# Signature algorithms: with SHA-1 hash or better (no DSA)
# TLS Ciphers: >= 128-bit key, >= 128-bit block (AES, ChaCha20, including AES-CBC)
# non-TLS Ciphers: as TLS Ciphers with added Camellia
# key exchange: ECDHE, RSA, DHE (no DHE-DSS)
# DH params size: >= 2048
# RSA params size: >= 2048
# TLS protocols: TLS >= 1.2, DTLS >= 1.2
mac = AEAD HMAC-SHA2-256 HMAC-SHA1 UMAC-128 HMAC-SHA2-384 HMAC-SHA2-512
mac@Kerberos = HMAC-SHA2-384 HMAC-SHA2-256 AEAD UMAC-128 HMAC-SHA2-512 HMAC-SHA1
group = X25519 X448 SECP256R1 SECP384R1 SECP521R1 \
FFDHE-2048 FFDHE-3072 FFDHE-4096 FFDHE-6144 FFDHE-8192
hash = SHA2-256 SHA2-384 SHA2-512 SHA3-256 SHA3-384 SHA3-512 SHA2-224 SHA1
sign = ECDSA-SHA3-256 ECDSA-SHA2-256 \
ECDSA-SHA3-384 ECDSA-SHA2-384 \
ECDSA-SHA3-512 ECDSA-SHA2-512 \
EDDSA-ED25519 EDDSA-ED448 \
RSA-PSS-SHA2-256 RSA-PSS-SHA2-384 RSA-PSS-SHA2-512 \
RSA-SHA3-256 RSA-SHA2-256 \
RSA-SHA3-384 RSA-SHA2-384 \
RSA-SHA3-512 RSA-SHA2-512 \
ECDSA-SHA2-224 RSA-PSS-SHA2-224 RSA-SHA2-224 \
ECDSA-SHA1 RSA-PSS-SHA1 RSA-SHA1
cipher = AES-256-GCM AES-256-CCM CHACHA20-POLY1305 CAMELLIA-256-GCM \
AES-256-CTR AES-256-CBC CAMELLIA-256-CBC AES-128-GCM AES-128-CCM \
CAMELLIA-128-GCM AES-128-CTR AES-128-CBC CAMELLIA-128-CBC
cipher@TLS = AES-256-GCM AES-256-CCM CHACHA20-POLY1305 AES-256-CBC \
AES-128-GCM AES-128-CCM AES-128-CBC
# 'RSA' is intentionally before DHE ciphersuites, as the DHE ciphersuites have
# interoperability issues in TLS.
key_exchange = ECDHE RSA DHE DHE-RSA PSK DHE-PSK ECDHE-PSK ECDHE-GSS DHE-GSS
protocol@TLS = TLS1.3 TLS1.2 DTLS1.2
protocol@IKE = IKEv2
# Parameter sizes
min_dh_size = 2048
min_dsa_size = 2048
min_rsa_size = 2048
# GnuTLS only for now
sha1_in_certs = 1
arbitrary_dh_groups = 1
ssh_certs = 1
ssh_etm = 1