Clamp() public static method

Modifies an existing 32 byte key value to comply with the requirements of the Poly1305 key by clearing required bits in the 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})
public static Clamp ( byte key ) : void
key byte a 32 byte key value k[0] ... k[15], r[0] ... r[15]
return void
Poly1305KeyGenerator Class Documentation
Esempio n. 1
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 protected override byte[] engineGenerateKey()
 {
     byte[] array = base.engineGenerateKey();
     Poly1305KeyGenerator.Clamp(array);
     return(array);
 }