module BLAKE128:S
BLAKE128
is the BLAKE2b hash function producing
128-bit (16-byte) digests. It is cryptographically secure.
However, the small size of the digests enables brute-force attacks
in 2{^64}
attempts.
typet =
string
The type of digests.
val hash_length : int
The length of digests, in bytes.
val compare : t -> t -> int
Compare two digests, with the same specification as
compare
.
val equal : t -> t -> bool
Test two digests for equality.
val string : string -> t
Return the digest of the given string.
val bytes : bytes -> t
Return the digest of the given byte sequence.
val substring : string -> int -> int -> t
substring s ofs len
returns the digest of the substring
of s
starting at index ofs
and containing len
characters.
val subbytes : bytes -> int -> int -> t
subbytes s ofs len
returns the digest of the subsequence
of s
starting at index ofs
and containing len
bytes.
val channel : in_channel -> int -> t
Read characters from the channel and return their digest.
See Digest.channel
for the full specification.
val file : string -> t
Return the digest of the file whose name is given.
val output : out_channel -> t -> unit
Write a digest on the given output channel.
val input : in_channel -> t
Read a digest from the given input channel.
val to_hex : t -> string
Return the printable hexadecimal representation of the given digest.
Invalid_argument
if the length of the argument
is not hash_length
,val of_hex : string -> t
Convert a hexadecimal representation back into the corresponding digest.
Invalid_argument
if the length of the argument
is not 2 * hash_length
, or if the arguments contains non-hexadecimal
characters.