我试图通过 SSH 连接到设备，但在身份验证之前一直收到错误，即“密钥长度无效”。我害怕修改设备，因为我不知道它需要什么可怕的东西才能工作。举个例子：似乎制造商在 Android 2.2 上启动后不久自动启动的 Android 应用程序中运行了整个 GUI，该应用程序在某物在启动时显示 Tux。
我应该怎么做才能让 SSH 尝试进行身份验证？
SSH-调试：3
OpenSSH_7.6p1 Ubuntu-4ubuntu0.1，OpenSSL 1.0.2n 2017 年 12 月 7 日 debug1：读取配置数据 /etc/ssh/ssh_config debug1：/etc/ssh/ssh_config 第 19 行：应用选项 * debug2：解析“192.168.1.120”端口22 调试2：ssh_connect_direct：需要特权 0 debug1：连接到192.168.1.120 [192.168.1.120]端口22。 debug1：连接已建立。 debug1：key_load_public：没有此文件或目录 debug1：身份文件/home/husky/.ssh/id_rsa 类型-1 debug1：key_load_public：没有此文件或目录 debug1：身份文件/home/husky/.ssh/id_rsa-cert 类型-1 debug1：key_load_public：没有此文件或目录 debug1：身份文件/home/husky/.ssh/id_dsa 类型-1 debug1：key_load_public：没有此文件或目录 debug1：身份文件/home/husky/.ssh/id_dsa-cert 类型-1 debug1：key_load_public：没有此文件或目录 debug1：身份文件/home/husky/.ssh/id_ecdsa 类型 -1 debug1：key_load_public：没有此文件或目录 debug1：身份文件/home/husky/.ssh/id_ecdsa-cert 类型 -1 debug1：key_load_public：没有此文件或目录 debug1：身份文件/home/husky/.ssh/id_ed25519 类型-1 debug1：key_load_public：没有此文件或目录 debug1：身份文件/home/husky/.ssh/id_ed25519-cert 类型-1 debug1：本地版本字符串 SSH-2.0-OpenSSH_7.6p1 Ubuntu-4ubuntu0.1 debug1：远程协议版本2.0，远程软件版本dropbear_2012.55 debug1：没有匹配：dropbear_2012.55 debug2：fd 3 设置 O_NONBLOCK debug1：以“用户”身份向 192.168.1.120:22 进行身份验证 debug3：发送数据包：类型20 debug1：SSH2_MSG_KEXINIT 已发送 debug3：接收数据包：类型20 debug1: 收到 SSH2_MSG_KEXINIT debug2：本地客户端KEXINIT提案 debug2：KEX 算法：curve25519-sha256，[电子邮件保护],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,ext-info-c debug2：主机密钥算法：[电子邮件保护]，[电子邮件保护]，[电子邮件保护]，[电子邮件保护]，[电子邮件保护],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519,rsa-sha2-512,rsa-sha2-256,ssh-rsa 调试2：密码ctos：[电子邮件保护],aes128-ctr,aes192-ctr,aes256-ctr,[电子邮件保护]，[电子邮件保护] debug2：密码存储：[电子邮件保护],aes128-ctr,aes192-ctr,aes256-ctr,[电子邮件保护]，[电子邮件保护] 调试2：MACs ctos：[电子邮件保护]，[电子邮件保护]，[电子邮件保护]，[电子邮件保护]，[电子邮件保护]，[电子邮件保护]，[电子邮件保护],hmac-sha2-256,hmac-sha2-512,hmac-sha1 debug2：MAC 库存：[电子邮件保护]，[电子邮件保护]，[电子邮件保护]，[电子邮件保护]，[电子邮件保护]，[电子邮件保护]，[电子邮件保护],hmac-sha2-256,hmac-sha2-512,hmac-sha1 debug2：压缩ctos：无，[电子邮件保护]，zlib debug2：压缩库存：无，[电子邮件保护]，zlib debug2：语言ctos： debug2：语言库存： 调试2：first_kex_follows 0 调试2：保留0 debug2：对等服务器 KEXINIT 提议 debug2：KEX 算法：diffie-hellman-group1-sha1，diffie-hellman-group14-sha1 debug2：主机密钥算法：ssh-rsa 调试2：密码ctos：aes128-ctr，3des-ctr，aes256-ctr，aes128-cbc，3des-cbc，aes256-cbc，twofish256-cbc，twofish-cbc，twofish128-cbc debug2：密码存储：aes128-ctr、3des-ctr、aes256-ctr、aes128-cbc、3des-cbc、aes256-cbc、twofish256-cbc、twofish-cbc、twofish128-cbc 调试2：MAC ctos：hmac-sha1-96，hmac-sha1，hmac-md5 调试2：MAC 存储：hmac-sha1-96、hmac-sha1、hmac-md5 debug2：压缩ctos：zlib，[电子邮件保护]，没有任何 debug2：压缩库：zlib，[电子邮件保护]，没有任何 debug2：语言ctos： debug2：语言库存： 调试2：first_kex_follows 0 调试2：保留0 debug1：kex：算法：diffie-hellman-group14-sha1 debug1：kex：主机密钥算法：ssh-rsa debug1：kex：服务器->客户端 密码：aes128-ctr MAC：hmac-sha1 压缩：无 debug1：kex：客户端->服务器 密码：aes128-ctr MAC：hmac-sha1 压缩：无 debug1：发送 SSH2_MSG_KEXDH_INIT debug2：位设置：1022/2048 debug3：发送数据包：类型30 debug1：期待 SSH2_MSG_KEXDH_REPLY debug3：接收数据包：类型31 ssh_dispatch_run_fatal：连接到 192.168.1.120 端口 22：密钥长度无效
相关的 TCPDump -X 输出
19:17:38.268011 IP husky-MS-7921.40324 > 9774d56d682e549c.ssh: Flags [S], seq 2347624957, win 29200, options [mss 1460,sackOK,TS val 2322116349 ecr 0,nop,wscale 7], length 0
0x0000: 4500 003c af22 4000 4006 0768 c0a8 0169 E..<."@[email protected]
0x0010: c0a8 0178 9d84 0016 8bed e9fd 0000 0000 ...x............
0x0020: a002 7210 04d2 0000 0204 05b4 0402 080a ..r.............
0x0030: 8a68 aefd 0000 0000 0103 0307 .h..........
19:17:39.096971 IP 9774d56d682e549c.ssh > husky-MS-7921.40324: Flags [S.], seq 1797888426, ack 2347624958, win 5792, options [mss 1460,sackOK,TS val 1805575304 ecr 2322116349,nop,wscale 1], length 0
0x0000: 4510 003c 0000 4000 4006 b67a c0a8 0178 E..<..@[email protected]
0x0010: c0a8 0169 0016 9d84 6b29 99aa 8bed e9fe ...i....k)......
0x0020: a012 16a0 0b3c 0000 0204 05b4 0402 080a .....<..........
0x0030: 6b9e e488 8a68 aefd 0103 0301 k....h......
19:17:39.097047 IP husky-MS-7921.40324 > 9774d56d682e549c.ssh: Flags [.], ack 1, win 229, options [nop,nop,TS val 2322117178 ecr 1805575304], length 0
0x0000: 4500 0034 af23 4000 4006 076f c0a8 0169 E..4.#@[email protected]
0x0010: c0a8 0178 9d84 0016 8bed e9fe 6b29 99ab ...x........k)..
0x0020: 8010 00e5 4c80 0000 0101 080a 8a68 b23a ....L........h.:
0x0030: 6b9e e488 k...
19:17:39.097935 IP husky-MS-7921.40324 > 9774d56d682e549c.ssh: Flags [P.], seq 1:42, ack 1, win 229, options [nop,nop,TS val 2322117179 ecr 1805575304], length 41
0x0000: 4500 005d af24 4000 4006 0745 c0a8 0169 E..].$@[email protected]
0x0010: c0a8 0178 9d84 0016 8bed e9fe 6b29 99ab ...x........k)..
0x0020: 8018 00e5 2826 0000 0101 080a 8a68 b23b ....(&.......h.;
0x0030: 6b9e e488 5353 482d 322e 302d 4f70 656e k...SSH-2.0-Open
0x0040: 5353 485f 372e 3670 3120 5562 756e 7475 SSH_7.6p1.Ubuntu
0x0050: 2d34 7562 756e 7475 302e 310d 0a -4ubuntu0.1..
19:17:39.102981 IP 9774d56d682e549c.ssh > husky-MS-7921.40324: Flags [.], ack 42, win 2896, options [nop,nop,TS val 1805575305 ecr 2322117179], length 0
0x0000: 4510 0034 7d22 4000 4006 3960 c0a8 0178 E..4}"@[email protected]`...x
0x0010: c0a8 0169 0016 9d84 6b29 99ab 8bed ea27 ...i....k).....'
0x0020: 8010 0b50 41ea 0000 0101 080a 6b9e e489 ...PA.......k...
0x0030: 8a68 b23b .h.;
19:17:39.121765 IP 9774d56d682e549c.ssh > husky-MS-7921.40324: Flags [P.], seq 1:27, ack 42, win 2896, options [nop,nop,TS val 1805575308 ecr 2322117179], length 26
0x0000: 4510 004e 7d23 4000 4006 3945 c0a8 0178 E..N}#@[email protected]
0x0010: c0a8 0169 0016 9d84 6b29 99ab 8bed ea27 ...i....k).....'
0x0020: 8018 0b50 a85d 0000 0101 080a 6b9e e48c ...P.]......k...
0x0030: 8a68 b23b 5353 482d 322e 302d 6472 6f70 .h.;SSH-2.0-drop
0x0040: 6265 6172 5f32 3031 322e 3535 0d0a bear_2012.55..
19:17:39.121807 IP husky-MS-7921.40324 > 9774d56d682e549c.ssh: Flags [.], ack 27, win 229, options [nop,nop,TS val 2322117202 ecr 1805575308], length 0
0x0000: 4500 0034 af25 4000 4006 076d c0a8 0169 E..4.%@[email protected]
0x0010: c0a8 0178 9d84 0016 8bed ea27 6b29 99c5 ...x.......'k)..
0x0020: 8010 00e5 4c21 0000 0101 080a 8a68 b252 ....L!.......h.R
0x0030: 6b9e e48c k...
19:17:39.121832 IP 9774d56d682e549c.ssh > husky-MS-7921.40324: Flags [P.], seq 27:483, ack 42, win 2896, options [nop,nop,TS val 1805575308 ecr 2322117179], length 456
0x0000: 4510 01fc 7d24 4000 4006 3796 c0a8 0178 E...}$@[email protected]
0x0010: c0a8 0169 0016 9d84 6b29 99c5 8bed ea27 ...i....k).....'
0x0020: 8018 0b50 bd12 0000 0101 080a 6b9e e48c ...P........k...
0x0030: 8a68 b23b 0000 01c4 0814 ff98 9878 b227 .h.;.........x.'
0x0040: b6e9 0ef3 a65a 7d13 a857 0000 0036 6469 .....Z}..W...6di
0x0050: 6666 6965 2d68 656c 6c6d 616e 2d67 726f ffie-hellman-gro
0x0060: 7570 312d 7368 6131 2c64 6966 6669 652d up1-sha1,diffie-
0x0070: 6865 6c6c 6d61 6e2d 6772 6f75 7031 342d hellman-group14-
0x0080: 7368 6131 0000 0007 7373 682d 7273 6100 sha1....ssh-rsa.
0x0090: 0000 6761 6573 3132 382d 6374 722c 3364 ..gaes128-ctr,3d
0x00a0: 6573 2d63 7472 2c61 6573 3235 362d 6374 es-ctr,aes256-ct
0x00b0: 722c 6165 7331 3238 2d63 6263 2c33 6465 r,aes128-cbc,3de
0x00c0: 732d 6362 632c 6165 7332 3536 2d63 6263 s-cbc,aes256-cbc
0x00d0: 2c74 776f 6669 7368 3235 362d 6362 632c ,twofish256-cbc,
0x00e0: 7477 6f66 6973 682d 6362 632c 7477 6f66 twofish-cbc,twof
0x00f0: 6973 6831 3238 2d63 6263 0000 0067 6165 ish128-cbc...gae
0x0100: 7331 3238 2d63 7472 2c33 6465 732d 6374 s128-ctr,3des-ct
0x0110: 722c 6165 7332 3536 2d63 7472 2c61 6573 r,aes256-ctr,aes
0x0120: 3132 382d 6362 632c 3364 6573 2d63 6263 128-cbc,3des-cbc
0x0130: 2c61 6573 3235 362d 6362 632c 7477 6f66 ,aes256-cbc,twof
0x0140: 6973 6832 3536 2d63 6263 2c74 776f 6669 ish256-cbc,twofi
0x0150: 7368 2d63 6263 2c74 776f 6669 7368 3132 sh-cbc,twofish12
0x0160: 382d 6362 6300 0000 1f68 6d61 632d 7368 8-cbc....hmac-sh
0x0170: 6131 2d39 362c 686d 6163 2d73 6861 312c a1-96,hmac-sha1,
0x0180: 686d 6163 2d6d 6435 0000 001f 686d 6163 hmac-md5....hmac
0x0190: 2d73 6861 312d 3936 2c68 6d61 632d 7368 -sha1-96,hmac-sh
0x01a0: 6131 2c68 6d61 632d 6d64 3500 0000 1a7a a1,hmac-md5....z
0x01b0: 6c69 622c 7a6c 6962 406f 7065 6e73 7368 lib,zlib@openssh
0x01c0: 2e63 6f6d 2c6e 6f6e 6500 0000 1a7a 6c69 .com,none....zli
0x01d0: 622c 7a6c 6962 406f 7065 6e73 7368 2e63 b,[email protected]
0x01e0: 6f6d 2c6e 6f6e 6500 0000 0000 0000 0000 om,none.........
0x01f0: 0000 0000 50a4 878c 1985 df0f ....P.......
19:17:39.121856 IP husky-MS-7921.40324 > 9774d56d682e549c.ssh: Flags [.], ack 483, win 237, options [nop,nop,TS val 2322117202 ecr 1805575308], length 0
0x0000: 4500 0034 af26 4000 4006 076c c0a8 0169 E..4.&@[email protected]
0x0010: c0a8 0178 9d84 0016 8bed ea27 6b29 9b8d ...x.......'k)..
0x0020: 8010 00ed 4a51 0000 0101 080a 8a68 b252 ....JQ.......h.R
0x0030: 6b9e e48c k...
19:17:39.122372 IP husky-MS-7921.40324 > 9774d56d682e549c.ssh: Flags [P.], seq 42:1402, ack 483, win 237, options [nop,nop,TS val 2322117203 ecr 1805575308], length 1360
0x0000: 4500 0584 af27 4000 4006 021b c0a8 0169 E....'@[email protected]
0x0010: c0a8 0178 9d84 0016 8bed ea27 6b29 9b8d ...x.......'k)..
0x0020: 8018 00ed e967 0000 0101 080a 8a68 b253 .....g.......h.S
0x0030: 6b9e e48c 0000 054c 0514 b674 9c42 6a1c k......L...t.Bj.
0x0040: dc13 73aa b729 dd39 7612 0000 0130 6375 ..s..).9v....0cu
0x0050: 7276 6532 3535 3139 2d73 6861 3235 362c rve25519-sha256,
0x0060: 6375 7276 6532 3535 3139 2d73 6861 3235 curve25519-sha25
0x0070: 3640 6c69 6273 7368 2e6f 7267 2c65 6364 [email protected],ecd
0x0080: 682d 7368 6132 2d6e 6973 7470 3235 362c h-sha2-nistp256,
0x0090: 6563 6468 2d73 6861 322d 6e69 7374 7033 ecdh-sha2-nistp3
0x00a0: 3834 2c65 6364 682d 7368 6132 2d6e 6973 84,ecdh-sha2-nis
0x00b0: 7470 3532 312c 6469 6666 6965 2d68 656c tp521,diffie-hel
0x00c0: 6c6d 616e 2d67 726f 7570 2d65 7863 6861 lman-group-excha
0x00d0: 6e67 652d 7368 6132 3536 2c64 6966 6669 nge-sha256,diffi
0x00e0: 652d 6865 6c6c 6d61 6e2d 6772 6f75 7031 e-hellman-group1
0x00f0: 362d 7368 6135 3132 2c64 6966 6669 652d 6-sha512,diffie-
0x0100: 6865 6c6c 6d61 6e2d 6772 6f75 7031 382d hellman-group18-
0x0110: 7368 6135 3132 2c64 6966 6669 652d 6865 sha512,diffie-he
0x0120: 6c6c 6d61 6e2d 6772 6f75 702d 6578 6368 llman-group-exch
0x0130: 616e 6765 2d73 6861 312c 6469 6666 6965 ange-sha1,diffie
0x0140: 2d68 656c 6c6d 616e 2d67 726f 7570 3134 -hellman-group14
0x0150: 2d73 6861 3235 362c 6469 6666 6965 2d68 -sha256,diffie-h
0x0160: 656c 6c6d 616e 2d67 726f 7570 3134 2d73 ellman-group14-s
0x0170: 6861 312c 6578 742d 696e 666f 2d63 0000 ha1,ext-info-c..
0x0180: 0122 6563 6473 612d 7368 6132 2d6e 6973 ."ecdsa-sha2-nis
0x0190: 7470 3235 362d 6365 7274 2d76 3031 406f tp256-cert-v01@o
0x01a0: 7065 6e73 7368 2e63 6f6d 2c65 6364 7361 penssh.com,ecdsa
0x01b0: 2d73 6861 322d 6e69 7374 7033 3834 2d63 -sha2-nistp384-c
0x01c0: 6572 742d 7630 3140 6f70 656e 7373 682e ert-v01@openssh.
0x01d0: 636f 6d2c 6563 6473 612d 7368 6132 2d6e com,ecdsa-sha2-n
0x01e0: 6973 7470 3532 312d 6365 7274 2d76 3031 istp521-cert-v01
0x01f0: 406f 7065 6e73 7368 2e63 6f6d 2c73 7368 @openssh.com,ssh
0x0200: 2d65 6432 3535 3139 2d63 6572 742d 7630 -ed25519-cert-v0
0x0210: 3140 6f70 656e 7373 682e 636f 6d2c 7373 [email protected],ss
0x0220: 682d 7273 612d 6365 7274 2d76 3031 406f h-rsa-cert-v01@o
0x0230: 7065 6e73 7368 2e63 6f6d 2c65 6364 7361 penssh.com,ecdsa
0x0240: 2d73 6861 322d 6e69 7374 7032 3536 2c65 -sha2-nistp256,e
0x0250: 6364 7361 2d73 6861 322d 6e69 7374 7033 cdsa-sha2-nistp3
0x0260: 3834 2c65 6364 7361 2d73 6861 322d 6e69 84,ecdsa-sha2-ni
0x0270: 7374 7035 3231 2c73 7368 2d65 6432 3535 stp521,ssh-ed255
0x0280: 3139 2c72 7361 2d73 6861 322d 3531 322c 19,rsa-sha2-512,
0x0290: 7273 612d 7368 6132 2d32 3536 2c73 7368 rsa-sha2-256,ssh
0x02a0: 2d72 7361 0000 006c 6368 6163 6861 3230 -rsa...lchacha20
0x02b0: 2d70 6f6c 7931 3330 3540 6f70 656e 7373 -poly1305@openss
0x02c0: 682e 636f 6d2c 6165 7331 3238 2d63 7472 h.com,aes128-ctr
0x02d0: 2c61 6573 3139 322d 6374 722c 6165 7332 ,aes192-ctr,aes2
0x02e0: 3536 2d63 7472 2c61 6573 3132 382d 6763 56-ctr,aes128-gc
0x02f0: 6d40 6f70 656e 7373 682e 636f 6d2c 6165 [email protected],ae
0x0300: 7332 3536 2d67 636d 406f 7065 6e73 7368 s256-gcm@openssh
0x0310: 2e63 6f6d 0000 006c 6368 6163 6861 3230 .com...lchacha20
0x0320: 2d70 6f6c 7931 3330 3540 6f70 656e 7373 -poly1305@openss
0x0330: 682e 636f 6d2c 6165 7331 3238 2d63 7472 h.com,aes128-ctr
0x0340: 2c61 6573 3139 322d 6374 722c 6165 7332 ,aes192-ctr,aes2
0x0350: 3536 2d63 7472 2c61 6573 3132 382d 6763 56-ctr,aes128-gc
0x0360: 6d40 6f70 656e 7373 682e 636f 6d2c 6165 [email protected],ae
0x0370: 7332 3536 2d67 636d 406f 7065 6e73 7368 s256-gcm@openssh
0x0380: 2e63 6f6d 0000 00d5 756d 6163 2d36 342d .com....umac-64-
0x0390: 6574 6d40 6f70 656e 7373 682e 636f 6d2c [email protected],
0x03a0: 756d 6163 2d31 3238 2d65 746d 406f 7065 umac-128-etm@ope
0x03b0: 6e73 7368 2e63 6f6d 2c68 6d61 632d 7368 nssh.com,hmac-sh
0x03c0: 6132 2d32 3536 2d65 746d 406f 7065 6e73 a2-256-etm@opens
0x03d0: 7368 2e63 6f6d 2c68 6d61 632d 7368 6132 sh.com,hmac-sha2
0x03e0: 2d35 3132 2d65 746d 406f 7065 6e73 7368 -512-etm@openssh
0x03f0: 2e63 6f6d 2c68 6d61 632d 7368 6131 2d65 .com,hmac-sha1-e
0x0400: 746d 406f 7065 6e73 7368 2e63 6f6d 2c75 [email protected],u
0x0410: 6d61 632d 3634 406f 7065 6e73 7368 2e63 [email protected]
0x0420: 6f6d 2c75 6d61 632d 3132 3840 6f70 656e om,umac-128@open
0x0430: 7373 682e 636f 6d2c 686d 6163 2d73 6861 ssh.com,hmac-sha
0x0440: 322d 3235 362c 686d 6163 2d73 6861 322d 2-256,hmac-sha2-
0x0450: 3531 322c 686d 6163 2d73 6861 3100 0000 512,hmac-sha1...
0x0460: d575 6d61 632d 3634 2d65 746d 406f 7065 .umac-64-etm@ope
0x0470: 6e73 7368 2e63 6f6d 2c75 6d61 632d 3132 nssh.com,umac-12
0x0480: 382d 6574 6d40 6f70 656e 7373 682e 636f [email protected]
0x0490: 6d2c 686d 6163 2d73 6861 322d 3235 362d m,hmac-sha2-256-
0x04a0: 6574 6d40 6f70 656e 7373 682e 636f 6d2c [email protected],
0x04b0: 686d 6163 2d73 6861 322d 3531 322d 6574 hmac-sha2-512-et
0x04c0: 6d40 6f70 656e 7373 682e 636f 6d2c 686d [email protected],hm
0x04d0: 6163 2d73 6861 312d 6574 6d40 6f70 656e ac-sha1-etm@open
0x04e0: 7373 682e 636f 6d2c 756d 6163 2d36 3440 ssh.com,umac-64@
0x04f0: 6f70 656e 7373 682e 636f 6d2c 756d 6163 openssh.com,umac
0x0500: 2d31 3238 406f 7065 6e73 7368 2e63 6f6d [email protected]
0x0510: 2c68 6d61 632d 7368 6132 2d32 3536 2c68 ,hmac-sha2-256,h
0x0520: 6d61 632d 7368 6132 2d35 3132 2c68 6d61 mac-sha2-512,hma
0x0530: 632d 7368 6131 0000 001a 6e6f 6e65 2c7a c-sha1....none,z
0x0540: 6c69 6240 6f70 656e 7373 682e 636f 6d2c [email protected],
0x0550: 7a6c 6962 0000 001a 6e6f 6e65 2c7a 6c69 zlib....none,zli
0x0560: 6240 6f70 656e 7373 682e 636f 6d2c 7a6c [email protected],zl
0x0570: 6962 0000 0000 0000 0000 0000 0000 0000 ib..............
0x0580: 0000 0000 ....
19:17:39.170347 IP 9774d56d682e549c.ssh > husky-MS-7921.40324: Flags [.], ack 1402, win 4256, options [nop,nop,TS val 1805575323 ecr 2322117203], length 0
0x0000: 4510 0034 7d25 4000 4006 395d c0a8 0178 E..4}%@[email protected]]...x
0x0010: c0a8 0169 0016 9d84 6b29 9b8d 8bed ef77 ...i....k).....w
0x0020: 8010 10a0 353e 0000 0101 080a 6b9e e49b ....5>......k...
0x0030: 8a68 b253 .h.S
19:17:39.170364 IP husky-MS-7921.40324 > 9774d56d682e549c.ssh: Flags [P.], seq 1402:1674, ack 483, win 237, options [nop,nop,TS val 2322117251 ecr 1805575323], length 272
0x0000: 4500 0144 af28 4000 4006 065a c0a8 0169 E..D.(@[email protected]
0x0010: c0a8 0178 9d84 0016 8bed ef77 6b29 9b8d ...x.......wk)..
0x0020: 8018 00ed 3a48 0000 0101 080a 8a68 b283 ....:H.......h..
0x0030: 6b9e e49b 0000 010c 051e 0000 0101 009d k...............
0x0040: a9cc 0026 23f5 7efd 6242 4704 58d2 51f6 ...&#.~.bBG.X.Q.
0x0050: d1b5 74e4 830f c22d 8f6b 5a29 0216 db21 ..t....-.kZ)...!
0x0060: 6c93 bb75 4384 9bdb 3200 0372 0840 c851 [email protected]
0x0070: d863 3743 8bab cf29 ab4e 41c3 caba f7b3 .c7C...).NA.....
0x0080: b470 d50a 3a36 23be 474d ee47 4a1d 8ca5 .p..:6#.GM.GJ...
0x0090: ea8b 117b d4b4 6738 75b9 0245 0dc9 5348 ...{..g8u..E..SH
0x00a0: 543f 395d 1ddd 370b e1e3 039d 4a4a 922b T?9]..7.....JJ.+
0x00b0: a5d3 f995 6faa 697c 5744 f66f 7265 928a ....o.i|WD.ore..
0x00c0: 3ddd e7a6 15a8 62b3 a0fc d4d9 86f1 8070 =.....b........p
0x00d0: 02b4 ca2d fbc9 95ae 565d 6b7c 1d9b a04f ...-....V]k|...O
0x00e0: 9b33 0731 398f be86 1e37 423a eaf4 16c5 .3.19....7B:....
0x00f0: bd89 c4c7 944c 6687 68a4 e9d4 3244 f9e9 .....Lf.h...2D..
0x0100: b78d 9384 48f5 38e4 a3eb 4e2d bedb 4a63 ....H.8...N-..Jc
0x0110: ebfb 5169 4bf9 7c68 4f2c b94b b8c4 8697 ..QiK.|hO,.K....
0x0120: 2a1e c5c7 79c2 c760 c56b 52e8 da23 47eb *...y..`.kR..#G.
0x0130: 38a4 ed06 124b 7015 ec7c c046 c753 e300 8....Kp..|.F.S..
0x0140: 0000 0000 ....
19:17:39.176536 IP 9774d56d682e549c.ssh > husky-MS-7921.40324: Flags [.], ack 1674, win 5616, options [nop,nop,TS val 1805575324 ecr 2322117251], length 0
0x0000: 4510 0034 7d26 4000 4006 395c c0a8 0178 E..4}&@[email protected]\...x
0x0010: c0a8 0169 0016 9d84 6b29 9b8d 8bed f087 ...i....k)......
0x0020: 8010 15f0 2ead 0000 0101 080a 6b9e e49c ............k...
0x0030: 8a68 b283 .h..
19:17:39.860670 IP 9774d56d682e549c.ssh > husky-MS-7921.40324: Flags [P.], seq 483:1059, ack 1674, win 5616, options [nop,nop,TS val 1805575499 ecr 2322117251], length 576
0x0000: 4510 0274 7d27 4000 4006 371b c0a8 0178 E..t}'@[email protected]
0x0010: c0a8 0169 0016 9d84 6b29 9b8d 8bed f087 ...i....k)......
0x0020: 8018 15f0 1a6b 0000 0101 080a 6b9e e54b .....k......k..K
0x0030: 8a68 b283 0000 023c 0a1f 0000 0094 0000 .h.....<........
0x0040: 0007 7373 682d 7273 6100 0000 0125 0000 ..ssh-rsa....%..
0x0050: 0080 6224 4307 0ff7 edaf 4a52 bf8c fd12 ..b$C.....JR....
0x0060: df9e 1bd1 c778 dfb3 f76d 2e17 d697 9688 .....x...m......
0x0070: ef1a f3f6 d3de 6b27 3ba4 a90e 6485 da63 ......k';...d..c
0x0080: f72d 4b4e 636c 77f3 a0cc 90c9 df18 a469 .-KNclw........i
0x0090: cfbb 7801 9ae0 f329 12c4 ed33 5d52 d2b5 ..x....)...3]R..
0x00a0: 5646 6c0b e48e dbf3 9780 ede1 2cf0 882a VFl.........,..*
0x00b0: d975 aa8e 8719 72f9 fb2c c6b2 e9ba 7130 .u....r..,....q0
0x00c0: b2fe edba 929f d79a 9cd1 817a f9c6 4a00 ...........z..J.
0x00d0: fc51 0000 0101 00fe 30eb 9ba8 f578 24b6 .Q......0....x$.
0x00e0: da22 fbf5 e3ed bfd2 e5b3 8bad fc50 a51c ."...........P..
0x00f0: bbf4 fb5b 0539 8e70 3154 6c66 6a40 20c4 ...[.9.p1Tlfj@..
0x0100: aa5f 7be4 6d9d 20c1 f683 fd81 50fc 7dcb ._{.m.......P.}.
0x0110: 4016 300f 9991 24bf 01b9 20e6 8c9f 9115 @.0...$.........
0x0120: fe86 87c2 50a4 d175 d2db e807 f2b7 81ae ....P..u........
0x0130: ed09 cbbf d734 bf67 5470 c511 fa5a af7d .....4.gTp...Z.}
0x0140: c4c3 9da2 daf2 5673 d161 b4e3 b2f7 93c3 ......Vs.a......
0x0150: 629e 2487 bc35 3b7c 7feb 4b1d 0fcb 2d05 b.$..5;|..K...-.
0x0160: 7300 10fc a43f 0936 b8d2 f4cb 5c9e d16b s....?.6....\..k
0x0170: 9d75 558a ccf4 7a8d 9030 109d 703b 6c7e .uU...z..0..p;l~
0x0180: 1a0d c2a7 1266 4e28 960a 057e 9254 69fb .....fN(...~.Ti.
0x0190: ec70 ce6d 151b 0d19 9672 1ca8 74b0 4298 .p.m.....r..t.B.
0x01a0: 0216 ef33 6089 bbd5 f125 6d85 6e4c fb94 ...3`....%m.nL..
0x01b0: ab25 f7dc 14d7 711c 14bf 4198 2ae3 83d9 .%....q...A.*...
0x01c0: 1a3e f723 4873 4fc3 b9f6 dec9 0b0d d8ad .>.#HsO.........
0x01d0: 8ef1 f9b9 d5d9 d000 0000 8f00 0000 0773 ...............s
0x01e0: 7368 2d72 7361 0000 0080 2903 9a57 3507 sh-rsa....)..W5.
0x01f0: 0c97 fcc7 5d22 783a f9b6 8e91 7390 d9d3 ....]"x:....s...
0x0200: 0e81 c5df 0b01 a1e6 7494 25ae 2613 8b15 ........t.%.&...
0x0210: c1d8 c797 9dc1 0235 e0a0 fbaa a398 56e9 .......5......V.
0x0220: 524f 88b7 1fc1 2d33 9183 b1cc d720 06d9 RO....-3........
0x0230: 1018 ceed 0b04 a3b6 9135 10c2 a797 8fda .........5......
0x0240: e87d 156c 7dec 2a73 edd2 d623 bc41 a294 .}.l}.*s...#.A..
0x0250: e32c 4c81 3300 fcfa 0aff 5ea4 bac4 511d .,L.3.....^...Q.
0x0260: c93c 2b88 d23b 533f b89a 8253 3a82 464b .<+..;S?...S:.FK
0x0270: 8048 eedb .H..
19:17:39.860693 IP 9774d56d682e549c.ssh > husky-MS-7921.40324: Flags [P.], seq 1059:1075, ack 1674, win 5616, options [nop,nop,TS val 1805575499 ecr 2322117251], length 16
0x0000: 4510 0044 7d28 4000 4006 394a c0a8 0178 E..D}(@[email protected]
0x0010: c0a8 0169 0016 9d84 6b29 9dcd 8bed f087 ...i....k)......
0x0020: 8018 15f0 83cf 0000 0101 080a 6b9e e54b ............k..K
0x0030: 8a68 b283 0000 000c 0a15 148b ad67 39eb .h...........g9.
0x0040: 27d5 7a02 '.z.
19:17:39.860704 IP husky-MS-7921.40324 > 9774d56d682e549c.ssh: Flags [.], ack 1075, win 246, options [nop,nop,TS val 2322117941 ecr 1805575499], length 0
0x0000: 4500 0034 af29 4000 4006 0769 c0a8 0169 E..4.)@[email protected]
0x0010: c0a8 0178 9d84 0016 8bed f087 6b29 9ddd ...x........k)..
0x0020: 8010 00f6 3df6 0000 0101 080a 8a68 b535 ....=........h.5
0x0030: 6b9e e54b k..K
19:17:39.861176 IP husky-MS-7921.40324 > 9774d56d682e549c.ssh: Flags [F.], seq 1674, ack 1075, win 246, options [nop,nop,TS val 2322117942 ecr 1805575499], length 0
0x0000: 4500 0034 af2a 4000 4006 0768 c0a8 0169 E..4.*@[email protected]
0x0010: c0a8 0178 9d84 0016 8bed f087 6b29 9ddd ...x........k)..
0x0020: 8011 00f6 3df4 0000 0101 080a 8a68 b536 ....=........h.6
0x0030: 6b9e e54b k..K
19:17:39.866337 IP 9774d56d682e549c.ssh > husky-MS-7921.40324: Flags [F.], seq 1075, ack 1675, win 5616, options [nop,nop,TS val 1805575501 ecr 2322117942], length 0
0x0000: 4510 0034 7d29 4000 4006 3959 c0a8 0178 E..4})@[email protected]
0x0010: c0a8 0169 0016 9d84 6b29 9ddd 8bed f088 ...i....k)......
0x0020: 8011 15f0 28f7 0000 0101 080a 6b9e e54d ....(.......k..M
0x0030: 8a68 b536 .h.6
19:17:39.866367 IP husky-MS-7921.40324 > 9774d56d682e549c.ssh: Flags [.], ack 1076, win 246, options [nop,nop,TS val 2322117947 ecr 1805575501], length 0
0x0000: 4500 0034 af2b 4000 4006 0767 c0a8 0169 E..4.+@[email protected]
0x0010: c0a8 0178 9d84 0016 8bed f088 6b29 9dde ...x........k)..
0x0020: 8010 00f6 3dec 0000 0101 080a 8a68 b53b ....=........h.;
0x0030: 6b9e e54d k..M
答案1
在仔细检查了 OpenSSH 7.5p1 版本与后续版本之间的差异后，我终于找到了需要修补的内容才能使其正常运行。
正如所述这个答案在 Stack Overflow 上，造成这种情况的原因是版本 7.6 和 7.6p1 中将最小密钥长度更改为 1024 字节。进行此更改的原因是由于 RSA 在 2003 年提出的安全问题，该问题建议从 2010 年开始将 1024 字节的最小密钥用于新密钥，因为摩尔定律决定了计算机能力和价格的快速增长（原始出处：维基百科）。
修复
要解决这个问题，您需要撤消此更改。幸运的是，您只需更改一行即可完成此操作。
在 中sshkey.h，大约在第 50 行左右SSH_RSA_MINIMUM_MODULUS_SIZE定义了一个名为的常量。该行看起来应该像这样（箭头指向行）：
# define EC_POINT void
#endif /* WITH_OPENSSL */
> #define SSH_RSA_MINIMUM_MODULUS_SIZE 1024
#define SSH_KEY_MAX_SIGN_DATA_SIZE (1 << 20)
struct sshbuf;
您需要做的就是将此常量的值更改为较低的值768（例如 7.5 版中的值）
我在最新版本（7.9p1）中成功实现了此修复，但理论上你可以对 7.9p1 和 7.6 之间的任何版本执行此修复。