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x/crypto/ssh: various tests fail on LUCI longtest builders #60981

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heschi opened this issue Jun 23, 2023 · 6 comments
Closed

x/crypto/ssh: various tests fail on LUCI longtest builders #60981

heschi opened this issue Jun 23, 2023 · 6 comments
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FrozenDueToAge NeedsFix The path to resolution is known, but the work has not been done.
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@heschi
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heschi commented Jun 23, 2023

The LUCI longtest builders seem to be triggering some behavioral differences in the SSH tests.

TestValidTerminalMode fails with no obvious cause on linux-amd64:

    session_test.go:266: missing output from echo SHELL $SHELL
=== RUN   TestValidTerminalMode
    session_test.go:261: echo SHELL $SHELL && stty -a && exit:
        �]0;chrome-bot@luci-golang-ci-focal-us-central1-a-4-qopo: ~��[01;32mchrome-bot@luci-golang-ci-focal-us-central1-a-4-qopo�[00m:�[01;34m(Linux 20.04)�[00m:�[01;34m~�[00m$ SHELL /bin/bash
        speed 38400 baud; rows 80; columns 40;
        line = 0;
        intr = ^C; quit = ^\; erase = ^?;
        kill = ^U; eof = ^D; eol = ;
        eol2 = ; swtch = ;
        start = ^Q; stop = ^S; susp = ^Z;
        rprnt = ^R; werase = ^W; lnext = ^V;
        discard = ^O; min = 1; time = 0;
        -parenb -parodd -cmspar cs8 -hupcl
        -cstopb cread -clocal -crtscts
        -ignbrk -brkint -ignpar -parmrk -inpck
        -istrip -inlcr -igncr icrnl ixon -ixoff
        -iuclc -ixany -imaxbel -iutf8
        opost -olcuc -ocrnl onlcr -onocr -onlret
        -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0
        isig icanon iexten -echo echoe echok
        -echonl -noflsh -xcase -tostop -echoprt
        echoctl echoke -flusho -extproc
        logout
    session_test.go:266: missing output from echo SHELL $SHELL
    test_unix_test.go:229: sshd:
        /b/s/w/ir/x/t/sshtest1967584695/sshd_config line 10: Deprecated option KeyRegenerationInterval
        /b/s/w/ir/x/t/sshtest1967584695/sshd_config line 11: Deprecated option ServerKeyBits
        /b/s/w/ir/x/t/sshtest1967584695/sshd_config line 17: Deprecated option RSAAuthentication
        /b/s/w/ir/x/t/sshtest1967584695/sshd_config line 22: Deprecated option RhostsRSAAuthentication
        debug1: inetd sockets after dupping: 3, 4
        Connection from UNKNOWN port 65535 on /b/s/w/ir/x/t/unixConnection2051831659/ssh port 65535
        debug1: Local version string SSH-2.0-OpenSSH_8.2p1 Ubuntu-4ubuntu0.5
        debug1: Remote protocol version 2.0, remote software version Go
        debug1: no match: Go
        debug2: fd 3 setting O_NONBLOCK
        debug2: Network child is on pid 11975
        debug1: list_hostkey_types: rsa-sha2-512,rsa-sha2-256,ssh-rsa,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,ecdsa-sha2-nistp256 [preauth]
        debug1: SSH2_MSG_KEXINIT sent [preauth]
        debug1: SSH2_MSG_KEXINIT received [preauth]
        debug2: local server KEXINIT proposal [preauth]
        debug2: KEX algorithms: curve25519-sha256,curve25519-sha256@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-group14-sha256 [preauth]
        debug2: host key algorithms: rsa-sha2-512,rsa-sha2-256,ssh-rsa,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,ecdsa-sha2-nistp256 [preauth]
        debug2: ciphers ctos: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com [preauth]
        debug2: ciphers stoc: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com [preauth]
        debug2: MACs ctos: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1 [preauth]
        debug2: MACs stoc: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1 [preauth]
        debug2: compression ctos: none,zlib@openssh.com [preauth]
        debug2: compression stoc: none,zlib@openssh.com [preauth]
        debug2: languages ctos:  [preauth]
        debug2: languages stoc:  [preauth]
        debug2: first_kex_follows 0  [preauth]
        debug2: reserved 0  [preauth]
        debug2: peer client KEXINIT proposal [preauth]
        debug2: KEX algorithms: curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,ext-info-c [preauth]
        debug2: host key algorithms: ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-rsa,ssh-dss,ssh-ed25519 [preauth]
        debug2: ciphers ctos: aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr [preauth]
        debug2: ciphers stoc: aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr [preauth]
        debug2: MACs ctos: hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1,hmac-sha1-96 [preauth]
        debug2: MACs stoc: hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1,hmac-sha1-96 [preauth]
        debug2: compression ctos: none [preauth]
        debug2: compression stoc: none [preauth]
        debug2: languages ctos:  [preauth]
        debug2: languages stoc:  [preauth]
        debug2: first_kex_follows 0  [preauth]
        debug2: reserved 0  [preauth]
        debug1: kex: algorithm: curve25519-sha256 [preauth]
        debug1: kex: host key algorithm: ecdsa-sha2-nistp256 [preauth]
        debug1: kex: client->server cipher: aes128-gcm@openssh.com MAC:  compression: none [preauth]
        debug1: kex: server->client cipher: aes128-gcm@openssh.com MAC:  compression: none [preauth]
        debug1: expecting SSH2_MSG_KEX_ECDH_INIT [preauth]
        debug2: monitor_read: 6 used once, disabling now
        debug2: set_newkeys: mode 1 [preauth]
        debug1: rekey out after 4294967296 blocks [preauth]
        debug1: SSH2_MSG_NEWKEYS sent [preauth]
        debug1: Sending SSH2_MSG_EXT_INFO [preauth]
        debug1: expecting SSH2_MSG_NEWKEYS [preauth]
        debug1: SSH2_MSG_NEWKEYS received [preauth]
        debug2: set_newkeys: mode 0 [preauth]
        debug1: rekey in after 4294967296 blocks [preauth]
        debug1: KEX done [preauth]
        debug1: userauth-request for user chrome-bot service ssh-connection method none [preauth]
        debug1: attempt 0 failures 0 [preauth]
        debug2: parse_server_config_depth: config reprocess config len 734
        reprocess config line 17: Deprecated option RSAAuthentication
        reprocess config line 22: Deprecated option RhostsRSAAuthentication
        debug2: monitor_read: 8 used once, disabling now
        debug2: input_userauth_request: setting up authctxt for chrome-bot [preauth]
        debug2: monitor_read: 4 used once, disabling now
        debug2: monitor_read: 10 used once, disabling now
        debug1: userauth_send_banner: sent [preauth]
        debug2: input_userauth_request: try method none [preauth]
        debug1: userauth-request for user chrome-bot service ssh-connection method publickey [preauth]
        debug1: attempt 1 failures 0 [preauth]
        debug2: input_userauth_request: try method publickey [preauth]
        debug2: userauth_pubkey: valid user chrome-bot querying public key ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBGHDtsTSokVGDixBzO1WAKeexzcimznWLRw/N2eIczT1QuLTOZnRgzyy/CBML2LtsKvpaV3xkJzTG82H/YLKRtM= [preauth]
        debug1: userauth_pubkey: test pkalg ecdsa-sha2-nistp256 pkblob ECDSA SHA256:DbuSF5a8c3JMmpZ5WiK8oLAx97Uu8zIAFReb/NyTPuo [preauth]
        debug1: temporarily_use_uid: 1000/1000 (e=1000/1000)
        debug1: trying public key file /b/s/w/ir/x/t/sshtest1967584695/authorized_keys
        debug1: fd 5 clearing O_NONBLOCK
        debug2: /b/s/w/ir/x/t/sshtest1967584695/authorized_keys:1: check options: 'ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQC8A6FGHDiWCSREAXCq6yBfNVr0xCVG2CzvktFNRpue+RXrGs/2a6ySEJQb3IYquw7HlJgu6fg3WIWhOmHCjfpG0PrL4CRwbqQ2LaPPXhJErWYejcD8Di00cF3677+G10KMZk9RXbmHtuBFZT98wxg8j+ZsBMqGM1+7yrWUvynswQ==
        '
        debug2: /b/s/w/ir/x/t/sshtest1967584695/authorized_keys:1: advance: 'AAAAB3NzaC1yc2EAAAADAQABAAAAgQC8A6FGHDiWCSREAXCq6yBfNVr0xCVG2CzvktFNRpue+RXrGs/2a6ySEJQb3IYquw7HlJgu6fg3WIWhOmHCjfpG0PrL4CRwbqQ2LaPPXhJErWYejcD8Di00cF3677+G10KMZk9RXbmHtuBFZT98wxg8j+ZsBMqGM1+7yrWUvynswQ==
        '
        debug2: /b/s/w/ir/x/t/sshtest1967584695/authorized_keys:2: check options: 'ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQDBrjzJ9YWLe4h2rO5/1fsLZnF95r8hprDTMjAe52kXxT3ZZUiILmWgS5bX45pWLdRZ8gSNYxXW0cbKysc7C3BzfgE8ImomSdRA78q0NMFMng+vKHDVtY8L330vNr7KsJN01BgHOhE5coTFmA8WH2lMyLnCqkcO45DapkUgQjeVPQ==
        '
        debug2: /b/s/w/ir/x/t/sshtest1967584695/authorized_keys:2: advance: 'AAAAB3NzaC1yc2EAAAADAQABAAAAgQDBrjzJ9YWLe4h2rO5/1fsLZnF95r8hprDTMjAe52kXxT3ZZUiILmWgS5bX45pWLdRZ8gSNYxXW0cbKysc7C3BzfgE8ImomSdRA78q0NMFMng+vKHDVtY8L330vNr7KsJN01BgHOhE5coTFmA8WH2lMyLnCqkcO45DapkUgQjeVPQ==
        '
        debug1: /b/s/w/ir/x/t/sshtest1967584695/authorized_keys:5: matching key found: ECDSA SHA256:DbuSF5a8c3JMmpZ5WiK8oLAx97Uu8zIAFReb/NyTPuo
        debug1: /b/s/w/ir/x/t/sshtest1967584695/authorized_keys:5: key options: agent-forwarding port-forwarding pty user-rc x11-forwarding
        Accepted key ECDSA SHA256:DbuSF5a8c3JMmpZ5WiK8oLAx97Uu8zIAFReb/NyTPuo found at /b/s/w/ir/x/t/sshtest1967584695/authorized_keys:5
        debug1: restore_uid: (unprivileged)
        debug2: userauth_pubkey: authenticated 0 pkalg ecdsa-sha2-nistp256 [preauth]
        Postponed publickey for chrome-bot from UNKNOWN port 65535 ssh2 [preauth]
        debug1: userauth-request for user chrome-bot service ssh-connection method publickey [preauth]
        debug1: attempt 2 failures 0 [preauth]
        debug2: input_userauth_request: try method publickey [preauth]
        debug2: userauth_pubkey: valid user chrome-bot attempting public key ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBGHDtsTSokVGDixBzO1WAKeexzcimznWLRw/N2eIczT1QuLTOZnRgzyy/CBML2LtsKvpaV3xkJzTG82H/YLKRtM= [preauth]
        debug1: temporarily_use_uid: 1000/1000 (e=1000/1000)
        debug1: trying public key file /b/s/w/ir/x/t/sshtest1967584695/authorized_keys
        debug1: fd 5 clearing O_NONBLOCK
        debug2: /b/s/w/ir/x/t/sshtest1967584695/authorized_keys:1: check options: 'ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQC8A6FGHDiWCSREAXCq6yBfNVr0xCVG2CzvktFNRpue+RXrGs/2a6ySEJQb3IYquw7HlJgu6fg3WIWhOmHCjfpG0PrL4CRwbqQ2LaPPXhJErWYejcD8Di00cF3677+G10KMZk9RXbmHtuBFZT98wxg8j+ZsBMqGM1+7yrWUvynswQ==
        '
        debug2: /b/s/w/ir/x/t/sshtest1967584695/authorized_keys:1: advance: 'AAAAB3NzaC1yc2EAAAADAQABAAAAgQC8A6FGHDiWCSREAXCq6yBfNVr0xCVG2CzvktFNRpue+RXrGs/2a6ySEJQb3IYquw7HlJgu6fg3WIWhOmHCjfpG0PrL4CRwbqQ2LaPPXhJErWYejcD8Di00cF3677+G10KMZk9RXbmHtuBFZT98wxg8j+ZsBMqGM1+7yrWUvynswQ==
        '
        debug2: /b/s/w/ir/x/t/sshtest1967584695/authorized_keys:2: check options: 'ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQDBrjzJ9YWLe4h2rO5/1fsLZnF95r8hprDTMjAe52kXxT3ZZUiILmWgS5bX45pWLdRZ8gSNYxXW0cbKysc7C3BzfgE8ImomSdRA78q0NMFMng+vKHDVtY8L330vNr7KsJN01BgHOhE5coTFmA8WH2lMyLnCqkcO45DapkUgQjeVPQ==
        '
        debug2: /b/s/w/ir/x/t/sshtest1967584695/authorized_keys:2: advance: 'AAAAB3NzaC1yc2EAAAADAQABAAAAgQDBrjzJ9YWLe4h2rO5/1fsLZnF95r8hprDTMjAe52kXxT3ZZUiILmWgS5bX45pWLdRZ8gSNYxXW0cbKysc7C3BzfgE8ImomSdRA78q0NMFMng+vKHDVtY8L330vNr7KsJN01BgHOhE5coTFmA8WH2lMyLnCqkcO45DapkUgQjeVPQ==
        '
        debug1: /b/s/w/ir/x/t/sshtest1967584695/authorized_keys:5: matching key found: ECDSA SHA256:DbuSF5a8c3JMmpZ5WiK8oLAx97Uu8zIAFReb/NyTPuo
        debug1: /b/s/w/ir/x/t/sshtest1967584695/authorized_keys:5: key options: agent-forwarding port-forwarding pty user-rc x11-forwarding
        Accepted key ECDSA SHA256:DbuSF5a8c3JMmpZ5WiK8oLAx97Uu8zIAFReb/NyTPuo found at /b/s/w/ir/x/t/sshtest1967584695/authorized_keys:5
        debug1: restore_uid: (unprivileged)
        debug1: auth_activate_options: setting new authentication options
        Accepted publickey for chrome-bot from UNKNOWN port 65535 ssh2: ECDSA SHA256:DbuSF5a8c3JMmpZ5WiK8oLAx97Uu8zIAFReb/NyTPuo
        debug1: monitor_child_preauth: chrome-bot has been authenticated by privileged process
        debug1: auth_activate_options: setting new authentication options [preauth]
        debug2: userauth_pubkey: authenticated 1 pkalg ecdsa-sha2-nistp256 [preauth]
        debug1: monitor_read_log: child log fd closed
        User child is on pid 11976
        debug1: SELinux support disabled
        debug2: set_newkeys: mode 0
        debug1: rekey in after 4294967296 blocks
        debug2: set_newkeys: mode 1
        debug1: rekey out after 4294967296 blocks
        debug1: ssh_packet_set_postauth: called
        debug1: active: key options: agent-forwarding port-forwarding pty user-rc x11-forwarding
        debug1: Entering interactive session for SSH2.
        debug2: fd 7 setting O_NONBLOCK
        debug2: fd 8 setting O_NONBLOCK
        debug1: server_init_dispatch
        debug1: server_input_channel_open: ctype session rchan 0 win 2097152 max 32768
        debug1: input_session_request
        debug1: channel 0: new [server-session]
        debug2: session_new: allocate (allocated 0 max 10)
        debug1: session_new: session 0
        debug1: session_open: channel 0
        debug1: session_open: session 0: link with channel 0
        debug1: server_input_channel_open: confirm session
        debug1: server_input_channel_req: channel 0 request pty-req reply 1
        debug1: session_by_channel: session 0 channel 0
        debug1: session_input_channel_req: session 0 req pty-req
        debug1: Allocating pty.
        debug2: session_new: allocate (allocated 0 max 10)
        debug1: session_new: session 0
        debug1: SELinux support disabled
        Attempt to write login records by non-root user (aborting)
        debug1: session_pty_req: session 0 alloc /dev/pts/0
        debug1: server_input_channel_req: channel 0 request shell reply 1
        debug1: session_by_channel: session 0 channel 0
        debug1: session_input_channel_req: session 0 req shell
        Starting session: shell on pts/0 for chrome-bot from UNKNOWN port 65535 id 0
        debug2: channel 0: rfd 11 isatty
        debug2: fd 11 setting O_NONBLOCK
        debug1: Setting controlling tty using TIOCSCTTY.
        debug2: channel 0: rcvd adjust 169
        debug2: channel 0: rcvd adjust 17
        debug2: channel 0: rcvd adjust 638
        debug2: channel 0: rcvd adjust 8
        debug1: Received SIGCHLD.
        debug1: session_by_pid: pid 11977
        debug1: session_exit_message: session 0 channel 0 pid 11977
        debug2: channel 0: request exit-status confirm 0
        debug1: session_exit_message: release channel 0
        debug2: channel 0: write failed
        debug2: channel 0: chan_shutdown_write (i0 o0 sock -1 wfd 9 efd -1 [closed])
        debug2: channel 0: send eow
        debug2: channel 0: output open -> closed
        debug1: session_by_tty: session 0 tty /dev/pts/0
        debug2: channel 0: read<=0 rfd 11 len -1
        debug1: session_pty_cleanup2: session 0 release /dev/pts/0
        debug2: channel 0: read failed
        debug2: channel 0: chan_shutdown_read (i0 o3 sock -1 wfd 11 efd -1 [closed])
        debug2: channel 0: input open -> drain
        debug2: channel 0: ibuf empty
        debug2: channel 0: send eof
        debug2: channel 0: input drain -> closed
        debug2: channel 0: send close
        debug2: notify_done: reading
        Attempt to write login records by non-root user (aborting)
        debug2: channel 0: rcvd close
        debug2: channel 0: is dead
        debug2: channel 0: gc: notify user
        debug1: session_by_channel: session 0 channel 0
        debug1: session_close_by_channel: channel 0 child 0
        Close session: user chrome-bot from UNKNOWN port 65535 id 0
        debug2: channel 0: gc: user detached
        debug2: channel 0: is dead
        debug2: channel 0: garbage collecting
        debug1: channel 0: free: server-session, nchannels 1
        Connection closed by UNKNOWN port 65535
        debug1: do_cleanup
        debug1: temporarily_use_uid: 1000/1000 (e=1000/1000)
        debug1: do_cleanup
        debug1: temporarily_use_uid: 1000/1000 (e=1000/1000)
        debug1: restore_uid: (unprivileged)
        debug1: audit_event: unhandled event 12
--- FAIL: TestValidTerminalMode (1.20s)

And a variety of agent tests fail on Windows with errors like:

=== RUN   TestAgent
    client_test.go:43: C:\Windows\System32\OpenSSH\ssh-agent.exe -s failed: exit status 255
--- FAIL: TestAgent (0.06s)

After some experimentation, it's due to the environment being cleared on https://cs.opensource.google/go/x/crypto/+/master:ssh/agent/client_test.go;l=39;drc=fcc990c556feee8d78e4f1019de3b4416fce00d9. Leaving the PROGRAMDATA variable set produces a new failure mode:

=== RUN   TestAgent
    client_test.go:61: agent stderr: 
    client_test.go:72: could not find key SSH_AUTH_SOCK in ""
--- FAIL: TestAgent (0.14s)

Which I'm stumped by.

cc @golang/security @bcmills @tklauser

@heschi heschi added the NeedsFix The path to resolution is known, but the work has not been done. label Jun 23, 2023
@heschi heschi added this to the Unreleased milestone Jun 23, 2023
@drakkan
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drakkan commented Jul 11, 2023

Hello,

TestValidTerminalMode may be fixed with this CL.

As for the agent tests, ssh-agent returns no output on Windows

Schermata del 2023-07-11 13-53-06

Test cases expect an output like this:

SSH_AUTH_SOCK=/tmp/ssh-P65gpcqArqvH/agent.15541; export SSH_AUTH_SOCK;
SSH_AGENT_PID=15542; export SSH_AGENT_PID;
echo Agent pid 15542;

we should connect over a named pipe ( \.\pipe\openssh-ssh-agent) or maybe we can just skip agent tests on Windows

@heschi
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heschi commented Jul 11, 2023

It sounds like agent support is just broken on Windows? In that case, skipping the tests seems unfortunate but reasonable.

@drakkan
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drakkan commented Jul 12, 2023

I have never used ssh-agent on Windows but as far as I can understand it is implemented as a Windows service and exposed on a named pipe, \.\pipe\openssh-ssh-agent by default.
On my Windows VM the agent service is disabled by default.

Therefore I think the agent support is just broken on Windows.

If adding something like https://github.com/Microsoft/go-winio as dependency is acceptable I can try to add agent support for Windows (cc @FiloSottile )

@gopherbot
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Change https://go.dev/cl/509035 mentions this issue: ssh: disable agent tests on Windows

gopherbot pushed a commit to golang/crypto that referenced this issue Jul 13, 2023
ssh-agent is implemented as a Windows service and exposed on a
named pipe. We don't currently support it.

See golang/go#60981

Change-Id: Iebdc42db30b37a87ac0766231b16aff3f17b3f56
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/509035
Run-TryBot: Heschi Kreinick <heschi@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Auto-Submit: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
@drakkan
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drakkan commented Jul 16, 2023

@heschi this issue is about test failures. I opened a new issue to track agent support on Windows. I think we can close this one

@heschi
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heschi commented Jul 17, 2023

Yep! https://ci.chromium.org/p/golang is green, thanks for the help.

@heschi heschi closed this as completed Jul 17, 2023
BiiChris pushed a commit to BiiChris/crypto that referenced this issue Sep 15, 2023
ssh-agent is implemented as a Windows service and exposed on a
named pipe. We don't currently support it.

See golang/go#60981

Change-Id: Iebdc42db30b37a87ac0766231b16aff3f17b3f56
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/509035
Run-TryBot: Heschi Kreinick <heschi@google.com>
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awly added a commit to tailscale/golang-x-crypto that referenced this issue Jan 8, 2024
* ocsp: add Response.Raw

Fixes golang/go#38340

Change-Id: I77afc901584ac3361eafa13c9ee9f8cf9ec2ee28
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/389256
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* acme/autocert: support External Account Binding (EAB) tokens

Support External Account Binding (EAB) tokens to the Manager as defined
in RFC 8555, Section 7.3.4. If the ExternalAccountBinding field is set
on Manager, pass it into the acme Account during registration.

Fixes golang/go#48809

Change-Id: I64c38b05ab577acbde9f526638cc8104d15ff055
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/354189
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Trust: Brad Fitzpatrick <bradfitz@golang.org>
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* all: gofmt

Gofmt to update doc comments to the new formatting.

For golang/go#51082.

Change-Id: I076031b6613691eefbb0f21739366e3fd2011ec9
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/399356
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* internal/wycheproof: add ECDH tests, including point decompression

Fixes golang/go#38936

Change-Id: I231d30fcc683abd9efb36b6fd9cc05f599078ade
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/396174
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* internal/wycheproof: skip truncated SHA-512 RSAPSS tests for boring

On the boringcrypto builder, skip the RSAPSS tests that use the
truncated SHA-512 hashes, since boringcrypto does not support them.

Fixes #52670

Change-Id: I8caecd0f34eb6d2740372db2b641563e3965ac7c
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/404654
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* acme/autocert/internal/acmetest: don't validate in goroutine

In the test server, rather than spawning a goroutine to validate
challenges, block on the validation before responding to the client.
This prevents a test race, where testing.T.Logf is called after the
test is completed.

While this has a slight behavioral difference to some production
ACME server implementations (although is behavior allowed in the spec),
the change has little material impact on what we are testing, since
previously the validation would happen so quickly that it would be
indistinguishable from the new blocking behavior (i.e. we would not be
sending multiple requests during polling previously.)

Fixes golang/go#52170

Change-Id: I75e3b2da69ddc2302be25a99f1b1151ed0f4af9b
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/405548
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* ssh/agent: fix non-RSA certificates

The type of ssh.PublicKey.Type can be a certificate type, while the
algorithm passed to SignWithAlgorithm is going to be an underlying
algorithm.

Fixes golang/go#52185

Change-Id: I0f7c46defa83d1fd64a3c1e861734650b20cca21
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/404614
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* acme: add AccountKeyRollover

Add support for AccountKeyRollover. API only returns an error since acme.Error
will contain appropriate KID lookup information. Due to the requirements
of double JWS encoding jwsEncodeJSON is also modified to support a
missing Nonce header and raw string embedding in the payload.

Fixes golang/go#42516

Change-Id: I959660a1a39b2c469b959accd48fda519daf4eb3
GitHub-Last-Rev: 8e8cc5b094743262939c145f56d3a3b57a057d64
GitHub-Pull-Request: golang/crypto#215
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/400274
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* curve25519/internal/field: update generator to avo v0.4.0

This version generates //go:build lines.

For golang/go#46155

Change-Id: I23e4617aa96bc5c15c10f3cd0882028ca08e09e8
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/388874
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* acme: DeactivateReg fix panic

Currently discover is not called which results in a panic if just a key
is added to an ACME client and then deactivation is attempted.
This patch adds a discover call as well as missing unit tests for the
API.

Change-Id: I0719e5376eb2fccf62182e5f91e5b5eaa7bdd518
GitHub-Last-Rev: 501d7c6c1b75a3069dcad4254b4d4a0d2ccb02c8
GitHub-Pull-Request: golang/crypto#217
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/406734
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* acme/autocert: properly clean DirCache paths

Don't assume the path passed into the DirCache methods is absolute, and
clean it before further operating on it. Put and Delete are not attacker
controlled, but clean them anyway.

Fixes #53082
Fixes CVE-2022-30636

Change-Id: I755f525a737da60ccba07ebce4d41cc8faebfcca
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* curve25519: remove dependency on fmt

For golang/go#48154

Change-Id: If7e99bd1159edc2e3deeb3a4e3d8fb048bc591ab
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/348069
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* A+C: delete AUTHORS and CONTRIBUTORS

In 2009, Google's open-source lawyers asked us to create the AUTHORS
file to define "The Go Authors", and the CONTRIBUTORS file was in
keeping with open source best practices of the time.

Re-reviewing our repos now in 2022, the open-source lawyers are
comfortable with source control history taking the place of the
AUTHORS file, and most open source projects no longer maintain
CONTRIBUTORS files.

To ease maintenance, remove AUTHORS and CONTRIBUTORS from all repos.

For golang/go#53961.

Change-Id: Ieb32933de4f234c77f0131490d4081b6c336820c
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* internal/subtle: rename to internal/alias

This avoids an import conflict in code that needs to import
crypto/subtle as well.

CL 424194 does the same for the main repo.

Change-Id: Ic54cb62bbfdcf5c2cb6f15ac47075ee1c41981ad
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/424175
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* acme: gofmt code with Go 1.19 gofmt

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* cryptobyte: add ReadUint64 and AddUint64

Fixes golang/go#53481.

Change-Id: Ic00eef498d1d3b5b0ca5c9c526fac7c26de30cf2
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/421014
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* ssh/agent: match OpenSSH extensionAgentMsg, not IETF draft

The OpenSSH wire format just suffixes the raw extension body,
without a nested string.

Fixes golang/go#51689

Change-Id: Ic224cedb934ba0563abca9a45a6be1c67769ed6d
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/412154
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* internal/wycheproof: add crypto/ecdh tests

Alongside the existing ECDH tests, add tests that use the new
crypto/ecdh package. The test vectors include a number of private
that use non-standard sizes, which we reject, but aren't flagged,
so we need to skip them.

Change-Id: Iaaef225b0149a86833095f51748d230385d43bfe
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* all: replace io/ioutil with io and os package

For golang/go#45557

Change-Id: I447530cc66896aef7a8d528ccb8d095b80e3cf47
GitHub-Last-Rev: 5f385ff46487ac318bd1147cdbbd26bb0ffd0426
GitHub-Pull-Request: golang/crypto#230
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/430797
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* acme/autocert: fix renewal timer issue

Block when creating the renewal timer, rather than doing it in a
goroutine. This fixes an issue where startRenew and stopRenew are called
very closely together, and due to lock ordering, stopRenew may be called
before startRenew, resulting in the appearance that the renewal timer
has been stopped before it has actually been created.

This is only an issue in tests, as that is the only place stopRenew is
actually used. In particular this issue manifests in TestGetCertiifcate
sub-tests, where a httptest server reuses a port across two of the
sub-tests. In this case, the renewal calls end up creating dirty state
for the subsequent test, which can cause confusing behavior (such as
attempting to register an account twice.)

Another solution to this problem would be introducing a bool, protected
by renewalMu, which indicates if renewal has been halted, and to check
it in startRenew to check if stopRenew has already been called, which
would allow us to continue calling startRenew in a goroutine and relying
on renewalMu locking for ordering. That said I don't see a particularly
strong reason to call startRenew concurrently, so this seems like the
simplest solution for now.

Fixes golang/go#52494

Change-Id: I95420d3fd877572a0b9e408d2f8cd353f6a4e80e
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* acme/autocert: remove TestRenewFromCache skips

Removes the skips from TestRenewFromCache and
TestRenewFromCacheAlreadyRenewed, which were added due to flakes which
may have been fixed by the renewal timer change.

Updates golang/go#51080

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* all: replace bytes.Compare with bytes.Equal

Change-Id: I911366b91ff2a1d02d7de202a166d876fb873142
GitHub-Last-Rev: f50e00376856fb9da36bb98ed0cdfd96c2f3b304
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* ssh: add ServerConfig.NoClientAuthCallback

It was possible to accept auth type "none" before, but not dynamically
at runtime as a function of the ConnMetadata like the other auth types'
callback hooks.

Fixes golang/go#51994

Change-Id: I83ea80901d4977d8f78523e3d1e16e0a7df5b172
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* all: fix a few function names on comments

Change-Id: Iac9c8f06b874e62b56f634dede8757b87514f421
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* all: use automatic RFC linking

pkgsite automatically links /RFC \d+/ to the mentioned RFC. Insert a
bunch of spaces into doc-comments for that to match.

Change-Id: I01834d7573428563f21c37e43316442e148dd8c4
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* go.mod: update golang.org/x dependencies

Update golang.org/x dependencies to their latest tagged versions.
Once this CL is submitted, and post-submit testing succeeds on all
first-class ports across all supported Go versions, this repository
will be tagged with its next minor version.

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* all: use math/bits.RotateLeft

Updates golang/go#31456

Change-Id: Idf043a25632526baa190bf42ed360cb79f85e493
GitHub-Last-Rev: 59461578926a85a87cc68dac96c0b7559766b7cf
GitHub-Pull-Request: golang/crypto#195
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* ssh: fix typo

Change-Id: I560d7f5a62161cd88361a9fe9982d36f8e25e5af
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/447475
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* go.mod: update golang.org/x dependencies

Update golang.org/x dependencies to their latest tagged versions.
Once this CL is submitted, and post-submit testing succeeds on all
first-class ports across all supported Go versions, this repository
will be tagged with its next minor version.

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* all: remove redundant type conversion

Change-Id: Ic6b210c1e5b99eef5c6e38d96feaf40e7e6033bb
GitHub-Last-Rev: b8ecf761efe6a2eec78a805a99d778bdcdb938f9
GitHub-Pull-Request: golang/crypto#229
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* ssh: support rsa-sha2-256/512 on the server side

This lets clients know we support rsa-sha2-256/512 signatures from
ssh-rsa public keys. OpenSSH prefers to break the connection rather than
attempting trial and error, apparently.

We don't enable support for the "ext-info-s" because we're not
interested in any client->server extensions.

This also replaces isAcceptableAlgo which was rejecting the
rsa-sha2-256/512-cert-v01@openssh.com public key algorithms.

Tested with OpenSSH 9.1 on macOS Ventura.

Fixes golang/go#49269
Updates golang/go#49952

Co-authored-by: Nicola Murino <nicola.murino@gmail.com>
Co-authored-by: Kristin Davidson <kdavidson@atlassian.com>
Change-Id: I4955c3b12bb45575e9977ac657bb5805b49d00c3
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* internal/wycheproof: update Go 1.20 crypto/ecdh API

For golang/go#56052

Change-Id: If34d01132e221ff525319e43d127ef14579f9054
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* cryptobyte: add support for ReadASN1Integer into []byte

This lets us extract large integers without involving math/big.

While at it, drop some use of reflect where a type switch will do.

Change-Id: Iebe2fb2267610bf95cf9747ba1d49b5ac9e62cda
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* go.mod: update golang.org/x dependencies

Update golang.org/x dependencies to their latest tagged versions.
Once this CL is submitted, and post-submit testing succeeds on all
first-class ports across all supported Go versions, this repository
will be tagged with its next minor version.

Change-Id: If72a913d54ec282d75e270409971b148df4b417c
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* acme: eliminate arbitrary timeouts in tests

Fixes golang/go#57107.

Change-Id: I20b1f6ca85170c6b4731d7c7ea06f4db742526cc
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* ssh: ensure that handshakeTransport goroutines have finished before Close returns

This fixes a data race in the tests for x/crypto/ssh, which expects to
be able to examine a transport's read and write counters without
locking after closing it.

(Given the number of goroutines, channels, and mutexes used in this
package, I wouldn't be surprised if other concurrency bugs remain.
I would suggest simplifying the concurrency in this package, but I
don't intend to follow up on that myself at the moment.)

Fixes golang/go#56957.

Change-Id: Ib1f1390b66707c66a3608e48f3f52483cff3c1f5
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/456758
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* internal/wycheproof: also use Verify in TestECDSA

Check both Verify and VerifyASN1 in the ECDSA tests.

Change-Id: Id767354484a7da18ae4e00cd6f2a01a2909e6732
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/453755
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* bcrypt: reject passwords longer than 72 bytes

By design, bcrypt only uses the first 72 bytes of a password when
generating a hash. Most implementations, including the reference one,
simply silently ignore any trailing input when provided passwords longer
than 72 bytes. This can cause confusion for users who expect the entire
password to be used to generate the hash.

In GenerateFromPassword, reject passwords longer than 72 bytes.
CompareHashAndPassword will still accept these passwords, since we
cannot break hashes that have already been stored.

Fixes golang/go#36546

Change-Id: I039addd2a2961a7fa9d1e4a3e892a9e3c8bf4c9a
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/450415
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Jason McNeil <jmcneil@x2studios.com>
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* go.mod: update golang.org/x dependencies

Update golang.org/x dependencies to their latest tagged versions.
Once this CL is submitted, and post-submit testing succeeds on all
first-class ports across all supported Go versions, this repository
will be tagged with its next minor version.

Change-Id: I25128883772569c8f729b091b0efcbc4afcbea67
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* all: fix some comments

Change-Id: I11030ee466c8cac6855ce4fe2cf72e0b8d7029f8
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* cryptobyte: reject negative Unwrite argument

Fixes golang/go#57112

Change-Id: I7a533046a6451d7ae3704eb81e6ddeec8442cf06
GitHub-Last-Rev: 3b088d95a2feca197cc4ebd1d9d34cb28008349f
GitHub-Pull-Request: golang/crypto#249
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* go.mod: update golang.org/x dependencies

Update golang.org/x dependencies to their latest tagged versions.
Once this CL is submitted, and post-submit testing succeeds on all
first-class ports across all supported Go versions, this repository
will be tagged with its next minor version.

Change-Id: If0ff32acaae5f6a717ed4d178a88f3346ecf1600
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* ssh: add support for aes256-gcm@openssh.com

Change-Id: I91caf3bda3dfd00c050f5ebf23c2a35a04c5762b
GitHub-Last-Rev: 6e71340e7960b5b6f71f7b96eeeaf8dfb268e306
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* go.mod: update golang.org/x dependencies

Update golang.org/x dependencies to their latest tagged versions.
Once this CL is submitted, and post-submit testing succeeds on all
first-class ports across all supported Go versions, this repository
will be tagged with its next minor version.

Change-Id: Ic0f0e8147eae1918612c3d1a1c1de14af0a43294
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* ssh: document that ParseRawPrivateKey supports Ed25519 keys

From CL 173457 and CL 235358.

Change-Id: Ia46ab9c7e2c57472df3126ddc7050f0068fcaab9
GitHub-Last-Rev: c38e379355602fe4ff11ff65f98c296d5c326281
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* curve25519: use crypto/ecdh on Go 1.20

For golang/go#52221

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* all: fix some comments

Change-Id: Ia0410f1f3bb0a9ee68c6dbe1e6f62f65f9e00955
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/477755
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* go.mod: update golang.org/x dependencies

Update golang.org/x dependencies to their latest tagged versions.
Once this CL is submitted, and post-submit testing succeeds on all
first-class ports across all supported Go versions, this repository
will be tagged with its next minor version.

Change-Id: I568d040817345a10881c31b8efc296f543e59113
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* cryptobyte: reject Object Identifiers with leading 0x80

Change-Id: Ie3a1b53e801077cd86963799e644b9783943933c
GitHub-Last-Rev: 6629bd74f1874eb9fde8e72bfb444ebf9073a1ab
GitHub-Pull-Request: golang/crypto#255
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* ssh/test: skip TestValidTerminalMode on non-Bourne shells

Fixes golang/go#38037.

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* ssh: skip unsupported tests on wasip1

Updates golang/go#32840
Updates golang/go#58141

Change-Id: Ib4425c1743d417920745205586af250dbf80c7e4
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* ssh/test: enable on solaris

Change-Id: Icf9c867e64ef68f6f46dd7d4cec07cf7c315c2ad
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* go.mod: update golang.org/x dependencies

Update golang.org/x dependencies to their latest tagged versions.
Once this CL is submitted, and post-submit testing succeeds on all
first-class ports across all supported Go versions, this repository
will be tagged with its next minor version.

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* Add support for "hmac-sha2-512-etm@openssh.com"

Change-Id: I0203881afd7ad72e68f76650817451d7e292c91b
GitHub-Last-Rev: 42b4119e1987e7a46aa06a2b142d5fd3ef6f216a
GitHub-Pull-Request: golang/crypto#129
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* x509roots: add new module

Adds the nss parser, under x509roots/nss, and the fallback
module/package, with the initial generated bundle.

Fixes golang/go#57792

Change-Id: Iebb1052e49126fa5baba1236f4ebc8dd8a823179
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/462036
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* go.mod: tell x repo tagging to ignore dep on net

CL 475438 introduced a cycle between net and crypto. This direction is
less important, so have the tagging process ignore it.

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* go.mod: update golang.org/x dependencies

Update golang.org/x dependencies to their latest tagged versions.
Once this CL is submitted, and post-submit testing succeeds on all
first-class ports across all supported Go versions, this repository
will be tagged with its next minor version.

Change-Id: If19e251a79af033583e6968766b7a831741cebb7
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* ssh/test: set a timeout and WaitDelay on sshd subcommands

This uses a copy of testenv.Command copied from the main repo, with
light edits to allow the testenv helpers to build with Go 1.19.

The testenv helper revealed an exec.Command leak in TestCertLogin, so
we also fix that leak and simplify server cleanup using
testing.T.Cleanup.

For golang/go#60099.
Fixes golang/go#60343.

Change-Id: I7f79fcdb559498b987ee7689972ac53b83870aaf
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* x509roots: use "generate" build tag

Since go generate sets it automatically.

Change-Id: I4623e523392140c0472b250ac99c8c3fa31e5b15
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* x509roots: fix generate script argument checking

Check for supply of both arguments forgot that the URL is set by
default. Instead just let the local path supersede the URL.

Change-Id: I0499137c99c735e8e453ff1c2a925435f3cd8039
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* x509roots: remove list hash and generation date, change ordering

This makes the automated update workflow simpler.

Also switch the ordering from human readable subject (which is not
necessarily unique), to the raw SPKI (which should always be unique).
This makes it somewhat harder to read to a human (since it'll appear a
little jumbled) but results in a stable sort.

Note this results in adding two new roots, which were added since we
last generated the bundle.

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* ssh: add hmac-sha2-512

This adds support for hmac-sha2-512 to ensure compatibility with SSH clients that request this MAC algorithm.

This rebases https://github.com/golang/crypto/pull/18.

Change-Id: Ia103c10a8b7e2e8dde556d5c36550eb5fa6bc1f6
GitHub-Last-Rev: 987ccae2bc7ae5e90a482d8797351c39dcb9bf33
GitHub-Pull-Request: golang/crypto#257
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/501455
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* x509roots/fallback: add //go:build go1.20 to bundle.go

Package fallback has no API; its only purpose is to automatically call
x509.SetFallbackRoots with a set of fallback roots. That API was added
in Go 1.20, hence the go1.20 build constraint in fallback.go.

Add that constraint to bundle.go too, so that it fails to build rather
than quietly being a no-op in Go 1.19.

Also simplify Write(fmt.Sprintf()) into fmt.Fprintf while here.

Add a temporary workaround for go.dev/issue/52287.
It has no effect on the public API in this module.

For golang/go#57792.
For golang/go#52287.

Change-Id: I1fe13f7d54b07b0b031e8bae685cffd7a8160165
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/505578
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* x509roots: generate a stable sort, for real this time

Sort based on the stringified subject, then break ties based on the raw
DER (which will, actually, be unique this time).

Change-Id: I3dd912fb19b103e92fabfb4562e31c6dcec40614
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/505695
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* go.mod: update golang.org/x dependencies

Update golang.org/x dependencies to their latest tagged versions.
Once this CL is submitted, and post-submit testing succeeds on all
first-class ports across all supported Go versions, this repository
will be tagged with its next minor version.

Change-Id: Icede82501a3703fcaad524f6b91ff6e5452b4547
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* ssh: prefer sha256 based MAC algorithms

sha256 is more optimized than sha512 in Go and is secure enough
so prefer sha256 over sha512.

Fixes golang/go#61138

Change-Id: I7658808655367f1ab5f4ac8b52e6b20bd30ebf87
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/507555
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* ssh: fix RSA certificate and public key authentication with older clients

After adding support for rsa-sha2-256/512 on the server side some edge
cases started to arise with old clients:

1) public key authentication with gpg-agent < 2.2.6 fails because we
   receive ssh-rsa as signature format and rsa-sha2-256 or rsa-sha2-512
   as algorithm.
   This is a bug in gpg-agent fixed in this commit:

   https://github.com/gpg/gnupg/commit/80b775bdbb852aa4a80292c9357e5b1876110c00

2) certificate authentication fails with OpenSSH 7.2-7.7 because we
   receive ssh-rsa-cert-v01@openssh.com as algorithm and rsa-sha2-256
   or rsa-sha2-512 as signature format.

This patch is based on CL 412854 and has been tested with every version
of OpenSSH from 7.1 to 7.9 and OpenSSH 9.3.

Fixes golang/go#53391

Change-Id: Id71f596f73d84efb5c76d6d5388432cccad3e3b1
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/506835
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* fix TestValidTerminalMode: missing output from echo SHELL $SHELL

add leading `echo` to have better compatibility

before

```
 go test -run ^TestValidTerminalMode -v
=== RUN   TestValidTerminalMode
    session_test.go:261: echo SHELL $SHELL && stty -a && exit:
        Last login: Thu Jul  6 12:24:38 2023 from 192.168.200.1
SHELL /bin/bashubuntu:~$
        speed 38400 baud; rows 80; columns 40;
        line = 0;
        intr = ^C; quit = ^\; erase = ^?;
        kill = ^U; eof = ^D; eol = <undef>;
        eol2 = <undef>; swtch = <undef>;
        start = ^Q; stop = ^S; susp = ^Z;
        rprnt = ^R; werase = ^W; lnext = ^V;
        discard = ^O; min = 1; time = 0;
        -parenb -parodd -cmspar cs8 -hupcl
        -cstopb cread -clocal -crtscts
        -ignbrk -brkint -ignpar -parmrk -inpck
        -istrip -inlcr -igncr icrnl ixon -ixoff
        -iuclc -ixany -imaxbel -iutf8
        opost -olcuc -ocrnl onlcr -onocr -onlret
        -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0
        isig icanon iexten -echo echoe echok
        -echonl -noflsh -xcase -tostop -echoprt
        echoctl echoke -flusho -extproc
        logout
    session_test.go:266: missing output from echo SHELL $SHELL
```

after

```
 go test -run ^TestValidTerminalMode -v
=== RUN   TestValidTerminalMode
    session_test.go:261: echo SHELL $SHELL && stty -a && exit:
        Last login: Thu Jul  6 12:24:38 2023 from 192.168.200.1
        bolian@ubuntu:~$
        SHELL /bin/bash
        speed 38400 baud; rows 80; columns 40;
        line = 0;
        intr = ^C; quit = ^\; erase = ^?;
        kill = ^U; eof = ^D; eol = <undef>;
        eol2 = <undef>; swtch = <undef>;
        start = ^Q; stop = ^S; susp = ^Z;
        rprnt = ^R; werase = ^W; lnext = ^V;
        discard = ^O; min = 1; time = 0;
        -parenb -parodd -cmspar cs8 -hupcl
        -cstopb cread -clocal -crtscts
        -ignbrk -brkint -ignpar -parmrk -inpck
        -istrip -inlcr -igncr icrnl ixon -ixoff
        -iuclc -ixany -imaxbel -iutf8
        opost -olcuc -ocrnl onlcr -onocr -onlret
        -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0
        isig icanon iexten -echo echoe echok
        -echonl -noflsh -xcase -tostop -echoprt
        echoctl echoke -flusho -extproc
        logout
--- PASS: TestValidTerminalMode (0.06s)
```

Change-Id: If60c040edb8c78a7d86bf58a6be47636d9e8f173
GitHub-Last-Rev: a2cc1b1af09e47df82fcb8685d829dfed945e8b0
GitHub-Pull-Request: golang/crypto#264
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/508115
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* ssh: disable client agent tests on Windows

ssh-agent is implemented as a Windows service and exposed on a
named pipe. We don't currently support it.

See golang/go#60981

Change-Id: Iebdc42db30b37a87ac0766231b16aff3f17b3f56
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* ssh: prefer sha256 based RSA key algorithms

sha256 is more optimized than sha512 in Go and is secure enough
so prefer sha256 over sha512.

Change-Id: I3fcf7457791e3ef4539e97049aa905dcd293499d
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/507556
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* internal/wycheproof: skip all tests in short test mode

The testdata for this package is around 8 MB and downloaded dynamically
via 'go mod download' from its canonical source rather than being copied
to this repository. We're moving towards disallowing all network use in
short test mode, including proxy.golang.org, so add a corresponding test
skip.

Needing to lookup a go test flag is unfortunate, but I don't know of a
less bad available option while the test does the download in TestMain.

On balance, it becomes viable to no longer disable the checksum database
since the test will only run on builders that permit internet use and so
sum.golang.org should just work.

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* x509roots/fallback: update bundle

This is an automated CL which updates the NSS root bundle.

Change-Id: Ic70152e674c60e48e85d96eab244add9b4fa5eb8
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* ssh: ignore invalid MACs and KEXs just like we do for ciphers

Tighter validation could cause backwards incompatibility issues, eg
configurations with valid and invalid MACs, KEXs, ciphers currently work
if a supported algorithm is negotiated and that's also the scenario of
removing support for an existing algorithm.

Fixes golang/go#39397

Change-Id: If90253ba89e1d8f732cc1e1c3d24fe0a1e2dac71
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* ssh: add diffie-hellman-group16-sha512 kex

This group is disabled by default because it is a bit slower than
the others.
The group18-sha512 variant is too slow to include.

Benchstat results including diffie-hellman-group18-sha512:

name                                           time/op
Kexes/diffie-hellman-group-exchange-sha256-12  22.6ms ± 9%
Kexes/diffie-hellman-group18-sha512-12          1.15s ±11%
Kexes/ecdh-sha2-nistp384-12                    3.91ms ± 6%
Kexes/ecdh-sha2-nistp256-12                     304µs ± 5%
Kexes/curve25519-sha256@libssh.org-12           413µs ± 7%
Kexes/ecdh-sha2-nistp521-12                    11.6ms ±13%
Kexes/curve25519-sha256-12                      361µs ± 5%
Kexes/diffie-hellman-group-exchange-sha1-12    22.9ms ± 9%
Kexes/diffie-hellman-group1-sha1-12            3.59ms ± 6%
Kexes/diffie-hellman-group14-sha1-12           22.1ms ±11%
Kexes/diffie-hellman-group14-sha256-12         21.6ms ± 8%
Kexes/diffie-hellman-group16-sha512-12          138ms ± 9%

name                                           alloc/op
Kexes/diffie-hellman-group-exchange-sha256-12  67.8kB ± 1%
Kexes/diffie-hellman-group18-sha512-12          243kB ± 9%
Kexes/ecdh-sha2-nistp384-12                    13.9kB ± 0%
Kexes/ecdh-sha2-nistp256-12                    12.1kB ± 0%
Kexes/curve25519-sha256@libssh.org-12          8.22kB ± 0%
Kexes/ecdh-sha2-nistp521-12                    16.5kB ± 0%
Kexes/curve25519-sha256-12                     8.22kB ± 0%
Kexes/diffie-hellman-group-exchange-sha1-12    67.5kB ± 0%
Kexes/diffie-hellman-group1-sha1-12            34.9kB ± 0%
Kexes/diffie-hellman-group14-sha1-12           61.9kB ± 0%
Kexes/diffie-hellman-group14-sha256-12         62.0kB ± 0%
Kexes/diffie-hellman-group16-sha512-12          117kB ± 0%

name                                           allocs/op
Kexes/diffie-hellman-group-exchange-sha256-12     314 ± 0%
Kexes/diffie-hellman-group18-sha512-12            271 ± 4%
Kexes/ecdh-sha2-nistp384-12                       243 ± 0%
Kexes/ecdh-sha2-nistp256-12                       213 ± 0%
Kexes/curve25519-sha256@libssh.org-12             168 ± 0%
Kexes/ecdh-sha2-nistp521-12                       245 ± 0%
Kexes/curve25519-sha256-12                        168 ± 0%
Kexes/diffie-hellman-group-exchange-sha1-12       314 ± 0%
Kexes/diffie-hellman-group1-sha1-12               255 ± 0%
Kexes/diffie-hellman-group14-sha1-12              255 ± 0%
Kexes/diffie-hellman-group14-sha256-12            255 ± 0%
Kexes/diffie-hellman-group16-sha512-12            256 ± 0%

Change-Id: Id119401fda7e417675325f37e3d442e70585206c
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* ssh: fix call to Fatalf from a non-test goroutine

Also fix some redundant type declarations.

Change-Id: Iad2950b67b1ec2e2590c59393b8ad15421ed3add
GitHub-Last-Rev: 41cf552f11387208491dee7b867050475043b25e
GitHub-Pull-Request: golang/crypto#263
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* go.mod: update golang.org/x dependencies

Update golang.org/x dependencies to their latest tagged versions.
Once this CL is submitted, and post-submit testing succeeds on all
first-class ports across all supported Go versions, this repository
will be tagged with its next minor version.

Change-Id: Id40feba36dfc31c7033c91b952ec824a38e048ee
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* go.mod: update golang.org/x dependencies

Update golang.org/x dependencies to their latest tagged versions.

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* ssh: check the declared public key algo against decoded one

This check will ensure we don't accept e.g. ssh-rsa-cert-v01@openssh.com
algorithm with ssh-rsa public key type.
The algorithm and public key type must be consistent: both must be
certificate algorithms, or neither.

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* ssh: support for marshaling keys using the OpenSSH format

This adds methods to marshal private keys, encrypted and unencrypted
to the OpenSSH format.

Fixes golang/go#37132

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* cryptobyte: add uint48 methods

Adds uint48 methods for cryptobyte.Builder and cryptobyte.String.
Supporting 48-bit unsigned integers is useful for working with protocols
that use them for sequence numbers, such as DTLS.

Fixes golang/go#61275

Change-Id: Ibe49422d37644b9212b28b123dc5e01850f7b05b
GitHub-Last-Rev: 11b388c240109c8f4ac23880645c901ce6d2f093
GitHub-Pull-Request: golang/crypto#265
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* sha3: have ShakeHash extend hash.Hash

Package sha3 recommends the SHAKE functions for new uses, but this is
currently somewhat inconvenient because ShakeHash does not implement
hash.Hash. This is understandable, as SHAKE supports arbitrary-length
outputs whereas hash.Hash only supports fixed-length outputs. But
there's a natural fixed-length output to provide: the minimum output
that still provides SHAKE's full-strength generic security.

While here, tweak Sum so that its temporary buffer can be stack
allocated.

Also, tweak the panic message in Write so that the error text is more
readily understandable to Go programmers without needing to be
familiar with crypto jargon, and add a similar check in Sum.

Change-Id: Icf037d3990a71de5630f8825606614443f8c5245
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* ssh: add MultiAlgorithmSigner

MultiAlgorithmSigner allows to restrict client-side, server-side and
certificate signing algorithms.

Fixes golang/go#52132
Fixes golang/go#36261

Change-Id: I295092f1bba647327aaaf294f110e9157d294159
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* ssh: add test cases for compatibility with old (buggy) clients

Improved test cases for CL 506835.

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* all: use crypto/ed25519 instead of golang.org/x/crypto/ed25519

This is a follow-up to CL 317169, which dropped go1.12 compatibility,
and made the golang.org/x/crypto/ed25519 package an alias / wrapper for
crypto/ed25519 in stdlib.

This patch updates uses within this repository to use stdlib instead of
depending on the wrapper. With this patch applied, the only remaining
use of the wrapper is in ed25519_test, which appears to be in place to
verify compatibility of the wrapper itself.

Change-Id: I0195396102a75ae20bdd82ca8ab59855c0eb5cea
GitHub-Last-Rev: 24dbec563cbd84bc47bdc7736b0245fc83dd3353
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* chacha20: drop Go 1.10 compatibility for arm64

Other packages already dropped compatibility with go < 1.12, so it should be safe to remove it for this package as well.

Change-Id: Ib1424763e3aa94d0187a667ebee058100136f53b
GitHub-Last-Rev: 51df9690a5f37ba50d5ae5e84cf31b78fb6c5cd8
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* ssh: add server side support for ping@openssh.com protocol extension

Fixes golang/go#62390

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* go.mod: update golang.org/x dependencies

Update golang.org/x dependencies to their latest tagged versions.

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* ssh: add support for SSH_AGENT_CONSTRAIN_EXTENSION with id 255

it was changed in the following draft

https://datatracker.ietf.org/doc/html/draft-miller-ssh-agent-03

The id 3 is now used for SSH_AGENT_CONSTRAIN_MAXSIGN key constraint,
an OpenSSH extension to the protocol that we do not currently support.
Instead, we added a compatibility layer for
SSH_AGENT_CONSTRAIN_EXTENSION with ID 3.

Fixes golang/go#62311

Change-Id: I421aee92aee9e693e43f66e6a5515c055333cb9b
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* all: update go directive to 1.18

Done with:

go get go@1.18
go mod tidy
go fix ./...

Using go1.21.3.

Also update avo to v0.5.0 in the curve25519/internal/field/_asm module.
It's newer and produces no diff in the generated code.

For golang/go#60268.

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* x509roots: check HTTP response status code and media type

The HTTP response status code is expected to be 200 OK, and
the certdata.txt file media type is expected to be plain text.
Check that it is before proceeding with parsing it.

Might help avoid repeats of CL 535735.

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* x509roots: catch the zero-roots case when generating the bundle

If the parser returns zero roots, don't attempt to completely remove
the bundle. This may happen if, i.e., the HTTP response is 200 but has
no content. An example of this may be http://go.dev/cl/535735.

Change-Id: I81fc2b49c8ec813cca17fd1c807296bfb053d992
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* ssh: add test case against ssh CLI

These tests try to ensure better compatibility of our server implementation
with the ssh CLI.

With these tests in place:

1) before merging CL 447757 we would have noticed that our server
   implementation was broken with OpenSSH 8.8+
2) after merging CL 447757 we would have noticed that our server
   implementation was broken with OpenSSH 7.2-7.7

The ssh CLI from $PATH is used by default, but can be overridden using
the SSH_CLI_PATH environment variable.

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* crypto/hkdf: remove useless call to Reset

HKDF is commonly used to read keys that are the the same length (or
smaller) than the size of the hash digest, which means the loop inside
Read only runs once.

In that case, calling Reset is unnecesssary overhead.

name                  old time/op    new time/op    delta
16ByteMD5Single-8       1.39µs ± 1%    1.22µs ± 0%  -11.95%  (p=0.000 n=10+9)
20ByteSHA1Single-8       826ns ± 0%     746ns ± 0%   -9.70%  (p=0.000 n=9+10)
32ByteSHA256Single-8     838ns ± 1%     744ns ± 0%  -11.29%  (p=0.000 n=10+10)
64ByteSHA512Single-8    5.12µs ± 0%    4.57µs ± 0%  -10.78%  (p=0.000 n=8+10)
8ByteMD5Stream-8         137ns ± 0%     138ns ± 0%   +0.27%  (p=0.009 n=9+6)
16ByteMD5Stream-8        264ns ± 0%     265ns ± 0%   +0.29%  (p=0.000 n=10+10)
8ByteSHA1Stream-8       64.1ns ± 0%    64.4ns ± 0%   +0.60%  (p=0.000 n=9+9)
20ByteSHA1Stream-8       145ns ± 0%     146ns ± 1%   +0.69%  (p=0.000 n=9+10)
8ByteSHA256Stream-8     42.9ns ± 1%    43.1ns ± 0%   +0.48%  (p=0.005 n=10+10)
32ByteSHA256Stream-8     151ns ± 0%     152ns ± 0%   +0.35%  (p=0.006 n=10+8)
8ByteSHA512Stream-8      139ns ± 0%     139ns ± 0%   +0.08%  (p=0.035 n=9+10)
64ByteSHA512Stream-8    1.07µs ± 0%    1.07µs ± 0%   +0.33%  (p=0.000 n=9+10)

name                  old speed      new speed      delta
16ByteMD5Single-8     11.6MB/s ± 0%  13.1MB/s ± 0%  +13.50%  (p=0.000 n=9+9)
20ByteSHA1Single-8    24.2MB/s ± 0%  26.8MB/s ± 0%  +10.75%  (p=0.000 n=9+10)
32ByteSHA256Single-8  38.2MB/s ± 1%  43.0MB/s ± 0%  +12.72%  (p=0.000 n=10+10)
64ByteSHA512Single-8  12.5MB/s ± 0%  14.0MB/s ± 0%  +12.06%  (p=0.000 n=8+10)
8ByteMD5Stream-8      58.2MB/s ± 0%  58.1MB/s ± 0%   -0.27%  (p=0.004 n=9+9)
16ByteMD5Stream-8     60.6MB/s ± 0%  60.5MB/s ± 0%   -0.27%  (p=0.000 n=9+10)
8ByteSHA1Stream-8      125MB/s ± 0%   124MB/s ± 0%   -0.59%  (p=0.000 n=9+9)
20ByteSHA1Stream-8     138MB/s ± 0%   137MB/s ± 1%   -0.69%  (p=0.000 n=9+10)
8ByteSHA256Stream-8    186MB/s ± 1%   185MB/s ± 0%   -0.47%  (p=0.005 n=10+10)
32ByteSHA256Stream-8   211MB/s …
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