CryptoSys API Library Manual

Gcm.Gmac Method

Compute GMAC using AES-GCM in one-off operation

Syntax

[C#]
public static byte[] Gmac(
	byte[] key,
	byte[] iv,
	byte[] msg
)
[VB.NET]
Public Shared Function Gmac ( _
	key As Byte(), _
	iv As Byte(), _
	msg As Byte() _
) As Byte()

Parameters

key
Key: must be exactly 16, 24 or 32 bytes long.
iv
Initialization vector
msg
Message data

Return Value

GMAC value in 16-byte array, or empty array on error

Remarks

Use General.ErrorCode to find the code of the last error.

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