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Diff for /src/usr.bin/ssh/PROTOCOL.u2f between version 1.19 and 1.20

version 1.19, 2020/01/28 08:01:34 version 1.20, 2020/02/21 00:04:43
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 default.  default.
   
 Attestation information is useful for out-of-band key and certificate  Attestation information is useful for out-of-band key and certificate
 registration worksflows, e.g. proving to a CA that a key is backed  registration workflows, e.g. proving to a CA that a key is backed
 by trusted hardware before it will issue a certificate. To support this  by trusted hardware before it will issue a certificate. To support this
 case, OpenSSH optionally allows retaining the attestation information  case, OpenSSH optionally allows retaining the attestation information
 at the time of key generation. It will take the following format:  at the time of key generation. It will take the following format:
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         byte[]          extensions          byte[]          extensions
         byte[32]        SHA256(message)          byte[32]        SHA256(message)
   
 No extensons are yet defined for SSH use. If any are defined in the future,  No extensions are yet defined for SSH use. If any are defined in the future,
 it will be possible to infer their presence from the contents of the "flags"  it will be possible to infer their presence from the contents of the "flags"
 value.  value.
   
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Removed from v.1.19  
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  Added in v.1.20