Poly1305KeyGeneratorClamp Method

Overload List

Clamp(Byte) Modifies an existing 32 byte key value to comply with the requirements of the Poly1305 key by clearing required bits in the
C#
r
(second 16 bytes) portion of the key.
Specifically:
  • r[3], r[7], r[11], r[15] have top four bits clear (i.e., are {0, 1, . . . , 15})
  • r[4], r[8], r[12] have bottom two bits clear (i.e., are in {0, 4, 8, . . . , 252})
Clamp(SpanByte) 

See Also