hi:
Oh, I'm sorry, It is my server-side code has bugs with Twisted(16.6.0)
Conch, that i have fixed it . But 'Message Authentication Code did not verify
(packet #3)' error will occurs with the SecureCRT(8.0.0 or 7.3.4) client. If
I connect OpenSSH_5.3p1 (or OpenSSH_6.6.1p1 ) sshd server through the SecureCRT
client, it is fine. Of course， if I connect Twisted SSH server by using the
Xshell client with hmac-sha2-512 options or “ssh -m hmac-sha2-512”，it is OK. I
do not know if it is SecureCRT client bug or twisted problem.
http://stackoverflow.com/questions/41296412/securecrt-hmac-sha2-512-message-authentication-code-did-not-verify-packet-3
At 2016-12-29 01:40:07, "Craig Rodrigues" <rodr...@crodrigues.org> wrote:
Jianchen,
Can you provide more details about the server you are writing?
I cannot reproduce your problem with the latest Twisted code in trunk.
Here is what I did:
git clone https://github.com/twisted/twisted twisted-test
cd twisted-test
python setup.py develop
cd docs/conch/examples
mkdir ssh-examples
ckeygen -t rsa -f ssh-keys/ssh_host_rsa_key
twistd -ny demo_recvline.tac
I logged in with:
sshusername@127.0.0.1 -m hmac-sha2-512 -vvv -p 6022
(using username for the login, and password for the password)
From the log, I saw:
debug1: Authenticating to 127.0.0.1:6022 as 'username'
debug3: put_host_port: [127.0.0.1]:6022
debug3: hostkeys_foreach: reading file "/Users/crodrigues/.ssh/known_hosts"
debug3: record_hostkey: found key type RSA in file
/Users/crodrigues/.ssh/known_hosts:5
debug3: load_hostkeys: loaded 1keys from [127.0.0.1]:6022
debug3: order_hostkeyalgs: prefer hostkeyalgs:
ssh-rsa-cert-...@openssh.com,rsa-sha2-512,rsa-sha2-256,ssh-rsa
debug3: send packet: type 20
debug1: SSH2_MSG_KEXINIT sent
debug3: receive packet: type 20
debug1: SSH2_MSG_KEXINIT received
debug2: local client KEXINIT proposal
debug2: KEX algorithms:
curve25519-sha...@libssh.org,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: host key algorithms:
ssh-rsa-cert-...@openssh.com,rsa-sha2-512,rsa-sha2-256,ssh-rsa,ecdsa-sha2-nistp256-cert-...@openssh.com,ecdsa-sha2-nistp384-cert-...@openssh.com,ecdsa-sha2-nistp521-cert-...@openssh.com,ssh-ed25519-cert-...@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519
debug2: ciphers ctos:
chacha20-poly1...@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-...@openssh.com,aes256-...@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc,3des-cbc
debug2: ciphers stoc:
chacha20-poly1...@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-...@openssh.com,aes256-...@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc,3des-cbc
debug2: MACs ctos: hmac-sha2-512
debug2: MACs stoc: hmac-sha2-512
debug2: compression ctos: none,z...@openssh.com,zlib
debug2: compression stoc: none,z...@openssh.com,zlib
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug2: peer server KEXINIT proposal
debug2: KEX algorithms:
ecdh-sha2-nistp256,ecdh-sha2-nistk163,ecdh-sha2-nistp224,ecdh-sha2-nistk233,ecdh-sha2-nistb233,ecdh-sha2-nistp384,ecdh-sha2-nistk283,ecdh-sha2-nistk409,ecdh-sha2-nistb409,ecdh-sha2-nistp521,ecdh-sha2-nistt571,diffie-hellman-group1-sha1,diffie-hellman-group14-sha1
debug2: host key algorithms: ssh-rsa
debug2: ciphers ctos:
aes256-ctr,aes256-cbc,aes192-ctr,aes192-cbc,aes128-ctr,aes128-cbc,cast128-ctr,cast128-cbc,blowfish-cbc,3des-cbc
debug2: ciphers stoc:
aes256-ctr,aes256-cbc,aes192-ctr,aes192-cbc,aes128-ctr,aes128-cbc,cast128-ctr,cast128-cbc,blowfish-cbc,3des-cbc
debug2: MACs ctos: hmac-sha2-512,hmac-sha2-384,hmac-sha2-256,hmac-sha1,hmac-md5
debug2: compression ctos: none,zlib
debug2: compression stoc: none,zlib
debug2: languages ctos:
debug2: languages stoc:debug2: first_kex_follows 0
debug2: reserved 0
debug1: kex: algorithm: ecdh-sha2-nistp256
debug1: kex: host key algorithm: ssh-rsa
debug1: kex: server->client cipher: aes128-ctr MAC: hmac-sha2-512 compression:
none
debug1: kex: client->server cipher: aes128-ctr MAC: hmac-sha2-512 compression:
none
debug3: send packet: type 30
debug1: sending SSH2_MSG_KEX_ECDH_INIT
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug3: receive packet: type 31
debug1: Server host key: ssh-rsa
SHA256:VP7JUyzN/BuRNuCOieijGHuF9fAylDBCYYJAtJ+gDO8
debug3: put_host_port: [127.0.0.1]:6022
debug3: put_host_port: [127.0.0.1]:6022
debug3: hostkeys_foreach: reading file "/Users/crodrigues/.ssh/known_hosts"
debug3: record_hostkey: found key type RSA in file
/Users/crodrigues/.ssh/known_hosts:5
debug3: load_hostkeys: loaded 1keys from [127.0.0.1]:6022
debug1: Host '[127.0.0.1]:6022' is known and matches the RSA host key.
debug1: Found key in /Users/crodrigues/.ssh/known_hosts:5
debug3: send packet: type 21
debug2: set_newkeys: mode 1
I did not see the problem that you saw.
--
Craig
On Tue, Dec 20, 2016 at 10:15 PM, 陈健 <chenjianhappy2...@126.com> wrote:
hi:
|
|
I write a SSH server with Twisted(15.5.0) Conch. But it don't support
hmac-sha2-512 MAC algorithms
|
. However I see this problem has been fixed in
https://twistedmatrix.com/trac/ticket/8108 . I asked the question in
http://stackoverflow.com/questions/41254398/twisted-hmac-sha2-512-corrupted-mac-on-input-with-openssh
.
Best regards,
---jianchen
_______________________________________________
Twisted-Python mailing list
Twisted-Python@twistedmatrix.com
http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
_______________________________________________
Twisted-Python mailing list
Twisted-Python@twistedmatrix.com
http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
