2.2.3.1.1 SMB2_PREAUTH_INTEGRITY_CAPABILITIES
The SMB2_PREAUTH_INTEGRITY_CAPABILITIES context is specified in an SMB2 NEGOTIATE request by the client to indicate which preauthentication integrity hash algorithms the client supports and to optionally supply a preauthentication integrity hash salt value. The format of the data in the Data field of this SMB2_NEGOTIATE_CONTEXT is as follows.
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HashAlgorithmCount |
SaltLength |
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HashAlgorithms (variable) |
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Salt (variable) |
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HashAlgorithmCount (2 bytes): The number of hash algorithms in the HashAlgorithms array. This value MUST be greater than zero.
SaltLength (2 bytes): The size, in bytes, of the Salt field.
HashAlgorithms (variable): An array of HashAlgorithmCount 16-bit integer IDs specifying the supported preauthentication integrity hash functions. The following IDs are defined.
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Value
Meaning
0x0001
SHA-512 as specified in [FIPS180-4]
Salt (variable): A buffer containing the salt value of the hash.