/* ecrypt-sync.c */

/* *** Please do not edit this file. *** */

#include "ecrypt-sync.h"




/**************************************************************/
/**************************************************************/
/* added by Larry Bugbee, June 9, 2007                        */

int  getCtxSize()    { return sizeof(ECRYPT_ctx); }

#ifdef ECRYPT_BUFFER_BYTES                  /* Dragon  */
#define CHUNK_SIZE      ECRYPT_BUFFER_BYTES
#elif ECRYPT_BLOCKLENGTH                    /* all but Dragon */
#define CHUNK_SIZE      ECRYPT_BLOCKLENGTH
#else
#define CHUNK_SIZE      0
#endif

int  getChunkSize()  { return CHUNK_SIZE; }

int isValidKeySize(int straw) {             /* in bits */
    int i = 0;
    for (i=0; ECRYPT_KEYSIZE(i) <= ECRYPT_MAXKEYSIZE; ++i)
        if (straw == ECRYPT_KEYSIZE(i)) return 1;
    return 0;
}

int isValidIVSize(int straw) {              /* in bits */
    int i = 0;
    for (i=0; ECRYPT_IVSIZE(i) <= ECRYPT_MAXIVSIZE; ++i)
        if (straw == ECRYPT_IVSIZE(i)) return 1;
    return 0;
}

/**************************************************************/
/**************************************************************/




#ifdef ECRYPT_USES_DEFAULT_ALL_IN_ONE

/*
 * Default implementation of all-in-one encryption/decryption of
 * (short) packets.
 */

#ifdef ECRYPT_HAS_SINGLE_PACKET_FUNCTION

void ECRYPT_process_packet(
  int action,
  ECRYPT_ctx* ctx,
  const u8* iv,
  const u8* input,
  u8* output,
  u32 msglen)
{
  ECRYPT_ivsetup(ctx, iv);

#ifdef ECRYPT_HAS_SINGLE_BYTE_FUNCTION
  ECRYPT_process_bytes(action, ctx, input, output, msglen);
#else
  if (action == 0)
    ECRYPT_encrypt_bytes(ctx, input, output, msglen);
  else
    ECRYPT_decrypt_bytes(ctx, input, output, msglen);
#endif
}

#else

void ECRYPT_encrypt_packet(
  ECRYPT_ctx* ctx,
  const u8* iv,
  const u8* plaintext,
  u8* ciphertext,
  u32 msglen)
{
  ECRYPT_ivsetup(ctx, iv);
  ECRYPT_encrypt_bytes(ctx, plaintext, ciphertext, msglen);
}

void ECRYPT_decrypt_packet(
  ECRYPT_ctx* ctx,
  const u8* iv,
  const u8* ciphertext,
  u8* plaintext,
  u32 msglen)
{
  ECRYPT_ivsetup(ctx, iv);
  ECRYPT_decrypt_bytes(ctx, ciphertext, plaintext, msglen);
}

#endif

#endif