[
https://issues.apache.org/jira/browse/SSHD-934?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16895842#comment-16895842
]
Goldstein Lyor commented on SSHD-934:
-------------------------------------
{noformat}
java.io.EOFException: Premature EOF - expected=133, actual=132
at org.apache.sshd.common.util.io.IoUtils.readFully(IoUtils.java:407)
at org.apache.sshd.common.util.io.IoUtils.readFully(IoUtils.java:391)
at
org.apache.sshd.common.config.keys.KeyEntryResolver.readRLEBytes(KeyEntryResolver.java:194)
at
org.apache.sshd.common.config.keys.impl.ECDSAPublicKeyEntryDecoder.decodePublicKey(ECDSAPublicKeyEntryDecoder.java:87)
at
org.apache.sshd.common.config.keys.impl.ECDSAPublicKeyEntryDecoder.decodePublicKey(ECDSAPublicKeyEntryDecoder.java:1)
at
org.apache.sshd.common.config.keys.PublicKeyEntryDecoder.decodePublicKeyByType(PublicKeyEntryDecoder.java:76)
at
org.apache.sshd.common.config.keys.PublicKeyRawDataDecoder.decodePublicKey(PublicKeyRawDataDecoder.java:62)
{noformat}
{noformat:title=Some failures}
# Failed (EOFException) to decode at attempt #314: Premature EOF - expected=65,
actual=64
ecdsa-sha2-nistp256
AAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBFTiGxA8llw0N5qGiyOcm3Hq4d8lTTUqSPnoCY2qkuAoADcrYp76Jh3OwJCBwCOGpxev0tTDE5KC5o1xfloqMw==
ecdsa-sha2-nistp256
AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBKPNhevjf96XcGgL4UzvwOHJT1knbYrBMX6UzMwVpnMBAHC2/SLB17msg9QnAdo39UsHWkR/Ol4eOsP6CGLFXw==
ecdsa-sha2-nistp256
AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBORCZj9u++Wi1KIZK2wqESnUIsWDy9dBoDMcsvEKIfvmAFHjFlXR+G/HBo7lPPsyb6I5P6dS+jm4g6B79Pn79g==
ecdsa-sha2-nistp256
AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBABLt0jd7Du4JDSERF9bfnTfUjVv1fzc0CiFXp0vXGzbmhf2miL9ONNFLRTvUfea+HyNVwh0MhuJbtUbgaU+pQ==
ecdsa-sha2-nistp256
AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBABwe7Ko/yFO4GxtV5Y4eh2JY5qOUlUmSubK848ivPH9HNYAnUaEk5lV5Qj1AO4toPRDzkC0LzQhgiY+PREfCQ==
------------------------------------------------------------------------------------------------------------------------------------------------
Failed (EOFException) to decode at attempt #48: Premature EOF - expected=97,
actual=96
ecdsa-sha2-nistp384
AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBBaDhjlcjdCwsfLEqAnA8eoy+3sy0/N4z+vG32EQwoatgilGJ+i61bRDQ3qC904B3AA1BC5f//E+2qGOHLhOOhyFYy1Mhr15BWsck41Zwh5MrNkNJ7qyD2VszQkzuSQk
ecdsa-sha2-nistp384
AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBM472gt1IFMZk1M2Hm1vroFqW++00WKmxE+PFOg4QeDNgIpWc6bF7Y3dnOyvfoa/UwAcq5Twv1Wb3hKsdxWJN/4L3b7RZngYvfUXAZQdDkKqox6Pk/jncNILiPMaTEaS
ecdsa-sha2-nistp384
AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBAAZpHfdD+bC3CESz5cdynCWLBqDkqGS+bq1S9NinloqzVfo5OxFKl2ZHnjDPVEgUM4cAzOGdYT9P8LNqqVJNxlCi6NosTIazSALPdoOf6y22N2OMwcB2LfvZZpIIjkR
ecdsa-sha2-nistp384
AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBN7Cxp4qR6i095sJSeyAHPQjwmcqynZVeshDKk4j3D2tYqBSNrp7VAqd/pkrnl8DxABG4yTlFWmk/62t9FBZbKzOzzTwh406KSr2iQoemH4yCvN3Nv9AQN3Le06xWdaS
ecdsa-sha2-nistp384
AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBAA2yS30p5pAbz2s/1VwB+a8eruIOmoxwlvN/ziO3uBAU5VlQxSlHqze1d6MRd0dyWjnc7jPRSssyOrucVnTBaq1MxB8xM4h5X6d00jZjFTj0DHF30i1Zf5o7X7Vw+uO
ecdsa-sha2-nistp384
AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBKIdSTYnumpeEjdFHsdMHcXD4kx2+yvf8NO3nYkqF3FetGTo9Yh8uPYFz9eLVz4HdQArMpKWj450v5UrzdyM7qfd/i2jDhq34SqLPuGVi5QQlHDrm9KyNviYyJzWyFie
ecdsa-sha2-nistp384
AAAAE2VjZHNhLXNoYTItbmlzdHAzODQAAAAIbmlzdHAzODQAAABhBBMnVpA1GIFxjiq5tuiLBeUYNLfHvkRrsvmXVX1HnsJXyz6oI6aASh35Rz2wX5uNlgAb8svyEIFH9AEDu5SrfTUIJmaSJnMoOs6dC0PPL2LL5v4yETYEFid0S8iq18f6
--------------------------------------------------------------------------------------------------------------------------------------------------------
Failed (EOFException) to decode at attempt #2: Premature EOF - expected=133,
actual=132
ecdsa-sha2-nistp521
AAAAE2VjZHNhLXNoYTItbmlzdHA1MjEAAAAIbmlzdHA1MjEAAACFBAGh+9K0EH2X+YcgJOPidyzEd747cCUfEWgxKrvwgJBs//ct2CprQB4dCx7T4juRVA9Kx4jSWfxJrX66N8ClNn/qwQBVOuXhIgln/taEGDl4Tjxt3nBdULTS4SprevdtI+gTJaL7byUf/YdZMAnKTfWifbLabWMtX80XBYfs8/cEl3uH
ecdsa-sha2-nistp521
AAAAE2VjZHNhLXNoYTItbmlzdHA1MjEAAAAIbmlzdHA1MjEAAACFBAEwY4IEPIqIjq4wvvMwOZApnqlePMhLiv+ScRi+5uQq9E5V+55A5tpNqXAaadmRBmWGIBXLjLtQV9a0u7ZeoN+8QAA/pFtqhQP06EGOcSiBmQrgSFsLVJTnSPp1WIcHteaAR4Zp9/nb4TFsati1/BwE92hgpsqh7VGakKA4Ade1KJcN
ecdsa-sha2-nistp521
AAAAE2VjZHNhLXNoYTItbmlzdHA1MjEAAAAIbmlzdHA1MjEAAACFBACuDDpzD2HF+RwEwfrjrfsn1Rvz3LflND5Eq03L66g2vaR8xGL2iYwy2l2xeX9rN+GhIA8M0GE2Ymp8O4ZM49R9QQBXXXGhfOoYqr4EAvO3fPShls7kBVxMXO45KddFjqA3+t8xzGEvt96/vJWp1YdYrwOnQwHUwiH4nuO+iTJNyC+A
ecdsa-sha2-nistp521
AAAAE2VjZHNhLXNoYTItbmlzdHA1MjEAAAAIbmlzdHA1MjEAAACFBAByRcz9a6eCM8z23JOa5Zis1oZlHjr1K8ttEpCDRomVU3w3Ciy/lC7U3QyL2ZilnGr6rzB+z1GPAh4wn9hKvL7HAf6VeHOa/tvyVK9P2fxxg22nYkZrZApu0ehzGZggCne3i5FhvkZ18dTd2MRHjlElqB0jxa5DR9lEI9ItYhsRZ7P7
ecdsa-sha2-nistp521
AAAAE2VjZHNhLXNoYTItbmlzdHA1MjEAAAAIbmlzdHA1MjEAAACFBABQmQbdvPlZb5RcPHb5aSc9YBqGdzEn/VJ3WUju/xGhP81qL4rZjVf34c3KIeMg/SjLjCBQxs8ZmdqwQgQdm+9wAW5i4g+bhR7+oIibUL6b0HmfVzylbkYY1Mqxc2YBciAEDxwLT1RlbePPpoVswA3/eK3bE8p13bs/O7HVwWBz1G44
ecdsa-sha2-nistp521
AAAAE2VjZHNhLXNoYTItbmlzdHA1MjEAAAAIbmlzdHA1MjEAAACFBABxcrsC29LSbJq0OkYe2GTEuMGpR1enaWdeP8w9oquknojjueFwzhf8cQvcAcbLxQt7ztkVLPVZ1pmC4pVpLm7kAWFknkvOO2flBJf+Rf+Hhu0AkmH1VGqfaunBYhFb0PmZlzgxdjCVhM1DPCUTME3TFEzAcwkv3H/O6nWvq8UgPOno
ecdsa-sha2-nistp521
AAAAE2VjZHNhLXNoYTItbmlzdHA1MjEAAAAIbmlzdHA1MjEAAACFBAEHyTMMidfOIGleYJTCY1WpgkN4iKX3jFwoKgWFomlSN1ve3SzQw+PZ939k4lsNm6FyisEtp2H/5xlZoeFRujF8lAAV9D/vHhXuO5zplZiC+apK3u85zCbG8q6fcWhx0LMA/cPqdtDqe1UkbulP5XJpVZN7rGAhtG25njdj8skVML27
ecdsa-sha2-nistp521
AAAAE2VjZHNhLXNoYTItbmlzdHA1MjEAAAAIbmlzdHA1MjEAAACFBAAiE7cDzH8vp8VZPxbd7aWxfnUDqu3M84l69N5j+iqBoOc6F/7j/sbdM7Gz2uSy6stsy8MH7TGEbNLWmPK8DQwUAO6xCrSyadFAwoYxLDoRf59FUGS46I6EdwpaViIf/Zz4K6W+rVtv1xwORVWTijkE/s2ibUtg1eYVMfZHMO5Bv61y
{noformat}
> Invalid public key encoding of certain ecdsa-sha2-nistpX host keys
> ------------------------------------------------------------------
>
> Key: SSHD-934
> URL: https://issues.apache.org/jira/browse/SSHD-934
> Project: MINA SSHD
> Issue Type: Bug
> Affects Versions: 1.2.0, 2.1.0
> Reporter: Louis Berube
> Priority: Major
> Attachments: ECDSA-encode-decode-junit-fragment.txt
>
>
> There appears to be an error in encoding the public part of certain ECDSA
> host key values. The bug has been found to affect the ecdsa-sha2-nistpX host
> key algorithms.
> The bug affects the different ECDSA host key types to different degrees.
> Usually when one generates a host key value it will work okay. However, if
> one repeatedly generates new host key values then eventually a value will be
> generated for which the encoding is not calculated correctly:
> * For ecdsa-sha2-nistp512: within ~10 repetitions
> * For ecdsa-sha2-nistp256: within ~200 repetitions
> * For ecdsa-sha2-nistp384: within ~1000 repetitions
> The attached Junit test code fragment was used to generate the above
> statistics.
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