package mirage-crypto

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type key

val of_secret : string -> key

Construct the encryption key corresponding to secret.

val key_sizes : int array

Key sizes allowed with this cipher.

val block_size : int

The size of a single block.

val encrypt : key:key -> string -> string

encrypt ~key src encrypts src into a freshly allocated buffer of the same size using key.

raises Invalid_argument
if the length of src is not a multiple of block_size.

val decrypt : key:key -> string -> string

decrypt ~key src decrypts src into a freshly allocated buffer of the same size using key.

raises Invalid_argument
if the length of src is not a multiple of block_size.

val encrypt_into : 
  key:key ->
  string ->
  src_off:int ->
  bytes ->
  dst_off:int ->
  int ->
  unit

encrypt_into ~key src ~src_off dst dst_off len encrypts len octets from src starting at src_off into dst starting at dst_off.

raises Invalid_argument
if src_off < 0 || String.length src - src_off < len.

val decrypt_into : 
  key:key ->
  string ->
  src_off:int ->
  bytes ->
  dst_off:int ->
  int ->
  unit

decrypt_into ~key src ~src_off dst dst_off len decrypts len octets from src starting at src_off into dst starting at dst_off.

raises Invalid_argument
if src_off < 0 || String.length src - src_off < len.