cryptopals

Cryptopals Challenges
git clone https://git.pngu.org/cryptopals
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misc.c (307B)

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#include "misc.h"

bool contains(const unsigned char *data, size_t data_len, const char *expr) {
  size_t expr_len = strlen(expr);
  if (expr_len > data_len)
    return false;
  for (size_t i = 0; i < data_len - expr_len; i++)
    if (!memcmp(data + i, expr, expr_len))
      return true;
  return false;
}