|  Download FileNamespace: \ParagonIE\Halite Methodschecksum()
> public staticchecksum($filepath,AuthenticationKey$key = null,$raw = false) :string Calculates a BLAKE2b-512 hash of the given file. 
`$filepath` - Path to a file (or an open file handle)
`$key` (optional)
`$raw` - Set to `TRUE` if you don't want a hexadecimal string returned
 encrypt()
> public staticencrypt($input,$output,EncryptionKey$key) :string decrypt()
> public staticdecrypt($input,$output,EncryptionKey$key) :string seal()
> public staticseal($input,$output,EncryptionPublicKey$key) :string unseal()
> public staticunseal($input,$output,EncryptionSecretKey$key) :string sign()
> public staticsign($input,SignatureSecretKey$key,boolean $raw_binary) :string verify()
> public staticsign($input,SignaturePublicKey$key,string $signature,boolean $raw_binary) :boolean |