Module Pdfcryptprimitives

module Pdfcryptprimitives: sig .. end

Generic encryption primitives for ARC4, AES and the SHA family of digests

val crypt : int array -> Pdfio.bytes -> Pdfio.bytes

ARC4 encryption (40 bit and 128 bit) given a key and some data

val aes_decrypt_data : ?remove_padding:bool -> int -> int array -> Pdfio.bytes -> Pdfio.bytes

aes_decrypt_data nk key data decrypts AES data for the given key length, key, and data. If remove_padding is true (which it is by default), padding wil be removed from the output

val aes_decrypt_data_ecb : ?remove_padding:bool -> int -> int array -> Pdfio.bytes -> Pdfio.bytes

As aes_decrypt_data above, but in ECB instead of CBC mode

val aes_encrypt_data : ?firstblock:int array -> int -> int array -> Pdfio.bytes -> Pdfio.bytes

aes_encrypt_data nk key data encryptes with AES, given a key length, key and data. The first block (by default a random one) can be overridden by specifying firstblock, an array of length 16.

val aes_encrypt_data_ecb : int -> int array -> Pdfio.bytes -> Pdfio.bytes

As aes_encrypt_data, but in ECB instead of CBC mode

val sha256 : Pdfio.input -> string

SHA256 digest

val sha384 : Pdfio.input -> string

SHA344 digest

val sha512 : Pdfio.input -> string

SHA512 digest