HMACSHA1 Constructor (Byte())
Initializes a new instance of the HMACSHA1 class with the specified key data.
Assembly: mscorlib (in mscorlib.dll)
HMACSHA1 is a type of keyed hash algorithm that is constructed from the SHA1 hash function and used as an HMAC, or hash-based message authentication code. The HMAC process mixes a secret key with the message data, hashes the result with the hash function, mixes that hash value with the secret key again, and then applies the hash function a second time. The output hash is 160 bits (20 bytes) in length.
This constructor creates an unmanaged instance of the algorithm by using the SHA1CryptoServiceProvider class.
Available since 1.1
Available since 2.0
Windows Phone Silverlight
Available since 7.0