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2.2.3.1.2 SMB2_ENCRYPTION_CAPABILITIES

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The SMB2_ENCRYPTION_CAPABILITIES context is specified in an SMB2 NEGOTIATE request by the client to indicate which encryption algorithms the client supports. The format of the data in the Data field of this SMB2_NEGOTIATE_CONTEXT is as follows.


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CipherCount

Ciphers (variable)

...

CipherCount (2 bytes): The number of ciphers in the Ciphers array. This value MUST be greater than zero.

Ciphers (variable): An array of CipherCount 16-bit integer IDs specifying the supported encryption algorithms. These IDs MUST be in an order such that the most preferred cipher MUST be at the beginning of the array and least preferred cipher at the end of the array. The following IDs are defined.

Value

Meaning

0x0001

AES-128-CCM

0x0002

AES-128-GCM

0x0003

AES-256-CCM

0x0004

AES-256-GCM