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#ifndef _AES_H
#define _AES_H
typedef struct
{
unsigned long int erk[64]; /* encryption round keys */
unsigned long int drk[64]; /* decryption round keys */
int nr; /* number of rounds */
} aes_context;
int aes_set_key(aes_context *ctx, unsigned char *key, int nbits);
void aes_encrypt(aes_context *ctx, unsigned char input[16], unsigned char output[16]);
void aes_decrypt(aes_context *ctx, unsigned char input[16], unsigned char output[16]);
#endif /* aes.h */
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