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/*
 * Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#ifndef HEADER_MODES_H
# define HEADER_MODES_H

# include <stddef.h>

# ifdef  __cplusplus
extern "C" {
# endif
typedef void (*block128_f) (const unsigned char in[16],
                            unsigned char out[16], const void *key);

typedef void (*cbc128_f) (const unsigned char *in, unsigned char *out,
                          size_t len, const void *key,
                          unsigned char ivec[16], int enc);

typedef void (*ctr128_f) (const unsigned char *in, unsigned char *out,
                          size_t blocks, const void *key,
                          const unsigned char ivec[16]);

typedef void (*ccm128_f) (const unsigned char *in, unsigned char *out,
                          size_t blocks, const void *key,
                          const unsigned char ivec[16],
                          unsigned char cmac[16]);

void CRYPTO_cbc128_encrypt(const unsigned char *in, unsigned char *out,
                           size_t len, const void *key,
                           unsigned char ivec[16], block128_f block);
void CRYPTO_cbc128_decrypt(const unsigned char *in, unsigned char *out,
                           size_t len, const void *key,
                           unsigned char ivec[16], block128_f block);

void CRYPTO_ctr128_encrypt(const unsigned char *in, unsigned char *out,
                           size_t len, const void *key,
                           unsigned char ivec[16],
                           unsigned char ecount_buf[16], unsigned int *num,
                           block128_f block);

void CRYPTO_ctr128_encrypt_ctr32(const unsigned char *in, unsigned char *out,
                                 size_t len, const void *key,
                                 unsigned char ivec[16],
                                 unsigned char ecount_buf[16],
                                 unsigned int *num, ctr128_f ctr);

void CRYPTO_ofb128_encrypt(const unsigned char *in, unsigned char *out,
                           size_t len, const void *key,
                           unsigned char ivec[16], int *num,
                           block128_f block);

void CRYPTO_cfb128_encrypt(const unsigned char *in, unsigned char *out,
                           size_t len, const void *key,
                           unsigned char ivec[16], int *num,
                           int enc, block128_f block);
void CRYPTO_cfb128_8_encrypt(const unsigned char *in, unsigned char *out,
                             size_t length, const void *key,
                             unsigned char ivec[16], int *num,
                             int enc, block128_f block);
void CRYPTO_cfb128_1_encrypt(const unsigned char *in, unsigned char *out,
                             size_t bits, const void *key,
                             unsigned char ivec[16], int *num,
                             int enc, block128_f block);

size_t CRYPTO_cts128_encrypt_block(const unsigned char *in,
                                   unsigned char *out, size_t len,
                                   const void *key, unsigned char ivec[16],
                                   block128_f block);
size_t CRYPTO_cts128_encrypt(const unsigned char *in, unsigned char *out,
                             size_t len, const void *key,
                             unsigned char ivec[16], cbc128_f cbc);
size_t CRYPTO_cts128_decrypt_block(const unsigned char *in,
                                   unsigned char *out, size_t len,
                                   const void *key, unsigned char ivec[16],
                                   block128_f block);
size_t CRYPTO_cts128_decrypt(const unsigned char *in, unsigned char *out,
                             size_t len, const void *key,
                             unsigned char ivec[16], cbc128_f cbc);

size_t CRYPTO_nistcts128_encrypt_block(const unsigned char *in,
                                       unsigned char *out, size_t len,
                                       const void *key,
                                       unsigned char ivec[16],
                                       block128_f block);
size_t CRYPTO_nistcts128_encrypt(const unsigned char *in, unsigned char *out,
                                 size_t len, const void *key,
                                 unsigned char ivec[16], cbc128_f cbc);
size_t CRYPTO_nistcts128_decrypt_block(const unsigned char *in,
                                       unsigned char *out, size_t len,
                                       const void *key,
                                       unsigned char ivec[16],
                                       block128_f block);
size_t CRYPTO_nistcts128_decrypt(const unsigned char *in, unsigned char *out,
                                 size_t len, const void *key,
                                 unsigned char ivec[16], cbc128_f cbc);

typedef struct gcm128_context GCM128_CONTEXT;

GCM128_CONTEXT *CRYPTO_gcm128_new(void *key, block128_f block);
void CRYPTO_gcm128_init(GCM128_CONTEXT *ctx, void *key, block128_f block);
void CRYPTO_gcm128_setiv(GCM128_CONTEXT *ctx, const unsigned char *iv,
                         size_t len);
int CRYPTO_gcm128_aad(GCM128_CONTEXT *ctx, const unsigned char *aad,
                      size_t len);
int CRYPTO_gcm128_encrypt(GCM128_CONTEXT *ctx,
                          const unsigned char *in, unsigned char *out,
                          size_t len);
int CRYPTO_gcm128_decrypt(GCM128_CONTEXT *ctx,
                          const unsigned char *in, unsigned char *out,
                          size_t len);
int CRYPTO_gcm128_encrypt_ctr32(GCM128_CONTEXT *ctx,
                                const unsigned char *in, unsigned char *out,
                                size_t len, ctr128_f stream);
int CRYPTO_gcm128_decrypt_ctr32(GCM128_CONTEXT *ctx,
                                const unsigned char *in, unsigned char *out,
                                size_t len, ctr128_f stream);
int CRYPTO_gcm128_finish(GCM128_CONTEXT *ctx, const unsigned char *tag,
                         size_t len);
void CRYPTO_gcm128_tag(GCM128_CONTEXT *ctx, unsigned char *tag, size_t len);
void CRYPTO_gcm128_release(GCM128_CONTEXT *ctx);

typedef struct ccm128_context CCM128_CONTEXT;

void CRYPTO_ccm128_init(CCM128_CONTEXT *ctx,
                        unsigned int M, unsigned int L, void *key,
                        block128_f block);
int CRYPTO_ccm128_setiv(CCM128_CONTEXT *ctx, const unsigned char *nonce,
                        size_t nlen, size_t mlen);
void CRYPTO_ccm128_aad(CCM128_CONTEXT *ctx, const unsigned char *aad,
                       size_t alen);
int CRYPTO_ccm128_encrypt(CCM128_CONTEXT *ctx, const unsigned char *inp,
                          unsigned char *out, size_t len);
int CRYPTO_ccm128_decrypt(CCM128_CONTEXT *ctx, const unsigned char *inp,
                          unsigned char *out, size_t len);
int CRYPTO_ccm128_encrypt_ccm64(CCM128_CONTEXT *ctx, const unsigned char *inp,
                                unsigned char *out, size_t len,
                                ccm128_f stream);
int CRYPTO_ccm128_decrypt_ccm64(CCM128_CONTEXT *ctx, const unsigned char *inp,
                                unsigned char *out, size_t len,
                                ccm128_f stream);
size_t CRYPTO_ccm128_tag(CCM128_CONTEXT *ctx, unsigned char *tag, size_t len);

typedef struct xts128_context XTS128_CONTEXT;

int CRYPTO_xts128_encrypt(const XTS128_CONTEXT *ctx,
                          const unsigned char iv[16],
                          const unsigned char *inp, unsigned char *out,
                          size_t len, int enc);

size_t CRYPTO_128_wrap(void *key, const unsigned char *iv,
                       unsigned char *out,
                       const unsigned char *in, size_t inlen,
                       block128_f block);

size_t CRYPTO_128_unwrap(void *key, const unsigned char *iv,
                         unsigned char *out,
                         const unsigned char *in, size_t inlen,
                         block128_f block);
size_t CRYPTO_128_wrap_pad(void *key, const unsigned char *icv,
                           unsigned char *out, const unsigned char *in,
                           size_t inlen, block128_f block);
size_t CRYPTO_128_unwrap_pad(void *key, const unsigned char *icv,
                             unsigned char *out, const unsigned char *in,
                             size_t inlen, block128_f block);

# ifndef OPENSSL_NO_OCB
typedef struct ocb128_context OCB128_CONTEXT;

typedef void (*ocb128_f) (const unsigned char *in, unsigned char *out,
                          size_t blocks, const void *key,
                          size_t start_block_num,
                          unsigned char offset_i[16],
                          const unsigned char L_[][16],
                          unsigned char checksum[16]);

OCB128_CONTEXT *CRYPTO_ocb128_new(void *keyenc, void *keydec,
                                  block128_f encrypt, block128_f decrypt,
                                  ocb128_f stream);
int CRYPTO_ocb128_init(OCB128_CONTEXT *ctx, void *keyenc, void *keydec,
                       block128_f encrypt, block128_f decrypt,
                       ocb128_f stream);
int CRYPTO_ocb128_copy_ctx(OCB128_CONTEXT *dest, OCB128_CONTEXT *src,
                           void *keyenc, void *keydec);
int CRYPTO_ocb128_setiv(OCB128_CONTEXT *ctx, const unsigned char *iv,
                        size_t len, size_t taglen);
int CRYPTO_ocb128_aad(OCB128_CONTEXT *ctx, const unsigned char *aad,
                      size_t len);
int CRYPTO_ocb128_encrypt(OCB128_CONTEXT *ctx, const unsigned char *in,
                          unsigned char *out, size_t len);
int CRYPTO_ocb128_decrypt(OCB128_CONTEXT *ctx, const unsigned char *in,
                          unsigned char *out, size_t len);
int CRYPTO_ocb128_finish(OCB128_CONTEXT *ctx, const unsigned char *tag,
                         size_t len);
int CRYPTO_ocb128_tag(OCB128_CONTEXT *ctx, unsigned char *tag, size_t len);
void CRYPTO_ocb128_cleanup(OCB128_CONTEXT *ctx);
# endif                          /* OPENSSL_NO_OCB */

# ifdef  __cplusplus
}
# endif

#endif
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