xref: /openbsd/lib/libcrypto/modes/modes.h (revision 0451f6ce)

/* $OpenBSD: modes.h,v 1.6 2023/07/08 14:55:36 beck Exp $ */
/* ====================================================================
 * Copyright (c) 2008 The OpenSSL Project. All rights reserved.
 *
 * Rights for redistribution and usage in source and binary
 * forms are granted according to the OpenSSL license.
 */

#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);

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);

#ifdef __cplusplus
}
#endif