Pure-Crypto: a pure crypto implementation for racket

Chen Xiao <chenxiao770117@gmail.com>

a pure racket implementation for crypto algorithms.

cipher: DES/TDES/AES.

padding_mode: pkcs7/zero/no-padding/ansix923/iso10126.

operation_mode: ecb/cbc/pcbc/cfb/ofb/ctr.

use detail? to generate report when needed. detail is my another tool package.