kris/boringssl
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
0648129566
boringssl/crypto/fipsmodule/modes/internal.h
Adam Langley 0648129566 Move modes/ into the FIPS module 
The changes to delocate.go are needed because modes/ does things like
return the address of a module function. Both of these need to be
changed from referencing the GOT to using local symbols.

Rather than testing whether |ghash| is |gcm_ghash_avx|, we can just keep
that information in a flag.

The test for |aesni_ctr32_encrypt_blocks| is more problematic, but I
believe that it's superfluous and can be dropped: if you passed in a
stream function that was semantically different from
|aesni_ctr32_encrypt_blocks| you would already have a bug because
|CRYPTO_gcm128_[en|de]crypt_ctr32| will handle a block at the end
themselves, and assume a big-endian, 32-bit counter anyway.

Change-Id: I68a84ebdab6c6006e11e9467e3362d7585461385
Reviewed-on: https://boringssl-review.googlesource.com/15064
Reviewed-by: Adam Langley <agl@google.com>
2017-04-21 17:46:37 +00:00

386 lines
16 KiB
C
Raw Blame History

/* ====================================================================
* Copyright (c) 2008 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* openssl-core@openssl.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ==================================================================== */
#ifndef OPENSSL_HEADER_MODES_INTERNAL_H
#define OPENSSL_HEADER_MODES_INTERNAL_H
#include <openssl/base.h>
#include <string.h>
#include "../../internal.h"
#if defined(__cplusplus)
extern "C" {
#endif
#define STRICT_ALIGNMENT 1
#if defined(OPENSSL_X86_64) || defined(OPENSSL_X86) || defined(OPENSSL_AARCH64)
#undef STRICT_ALIGNMENT
#define STRICT_ALIGNMENT 0
#endif
#if defined(__GNUC__) && __GNUC__ >= 2
static inline uint32_t CRYPTO_bswap4(uint32_t x) {
return __builtin_bswap32(x);
}
static inline uint64_t CRYPTO_bswap8(uint64_t x) {
return __builtin_bswap64(x);
}
#elif defined(_MSC_VER)
OPENSSL_MSVC_PRAGMA(warning(push, 3))
#include <intrin.h>
OPENSSL_MSVC_PRAGMA(warning(pop))
#pragma intrinsic(_byteswap_uint64, _byteswap_ulong)
static inline uint32_t CRYPTO_bswap4(uint32_t x) {
return _byteswap_ulong(x);
}
static inline uint64_t CRYPTO_bswap8(uint64_t x) {
return _byteswap_uint64(x);
}
#else
static inline uint32_t CRYPTO_bswap4(uint32_t x) {
x = (x >> 16) | (x << 16);
x = ((x & 0xff00ff00) >> 8) | ((x & 0x00ff00ff) << 8);
return x;
}
static inline uint64_t CRYPTO_bswap8(uint64_t x) {
return CRYPTO_bswap4(x >> 32) | (((uint64_t)CRYPTO_bswap4(x)) << 32);
}
#endif
static inline uint32_t GETU32(const void *in) {
uint32_t v;
OPENSSL_memcpy(&v, in, sizeof(v));
return CRYPTO_bswap4(v);
}
static inline void PUTU32(void *out, uint32_t v) {
v = CRYPTO_bswap4(v);
OPENSSL_memcpy(out, &v, sizeof(v));
}
static inline uint32_t GETU32_aligned(const void *in) {
const char *alias = (const char *) in;
return CRYPTO_bswap4(*((const uint32_t *) alias));
}
static inline void PUTU32_aligned(void *in, uint32_t v) {
char *alias = (char *) in;
*((uint32_t *) alias) = CRYPTO_bswap4(v);
}
/* block128_f is the type of a 128-bit, block cipher. */
typedef void (*block128_f)(const uint8_t in[16], uint8_t out[16],
const void *key);
/* GCM definitions */
typedef struct { uint64_t hi,lo; } u128;
/* gmult_func multiplies |Xi| by the GCM key and writes the result back to
* |Xi|. */
typedef void (*gmult_func)(uint64_t Xi[2], const u128 Htable[16]);
/* ghash_func repeatedly multiplies |Xi| by the GCM key and adds in blocks from
* |inp|. The result is written back to |Xi| and the |len| argument must be a
* multiple of 16. */
typedef void (*ghash_func)(uint64_t Xi[2], const u128 Htable[16],
const uint8_t *inp, size_t len);
/* This differs from upstream's |gcm128_context| in that it does not have the
* |key| pointer, in order to make it |memcpy|-friendly. Rather the key is
* passed into each call that needs it. */
struct gcm128_context {
/* Following 6 names follow names in GCM specification */
union {
uint64_t u[2];
uint32_t d[4];
uint8_t c[16];
size_t t[16 / sizeof(size_t)];
} Yi, EKi, EK0, len, Xi;
/* Note that the order of |Xi|, |H| and |Htable| is fixed by the MOVBE-based,
* x86-64, GHASH assembly. */
u128 H;
u128 Htable[16];
gmult_func gmult;
ghash_func ghash;
unsigned int mres, ares;
block128_f block;
/* use_aesni_gcm_crypt is true if this context should use the assembly
* functions |aesni_gcm_encrypt| and |aesni_gcm_decrypt| to process data. */
unsigned use_aesni_gcm_crypt:1;
};
#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64)
/* crypto_gcm_clmul_enabled returns one if the CLMUL implementation of GCM is
* used. */
int crypto_gcm_clmul_enabled(void);
#endif
/* CTR. */
/* ctr128_f is the type of a function that performs CTR-mode encryption. */
typedef void (*ctr128_f)(const uint8_t *in, uint8_t *out, size_t blocks,
const void *key, const uint8_t ivec[16]);
/* CRYPTO_ctr128_encrypt encrypts (or decrypts, it's the same in CTR mode)
* |len| bytes from |in| to |out| using |block| in counter mode. There's no
* requirement that |len| be a multiple of any value and any partial blocks are
* stored in |ecount_buf| and |*num|, which must be zeroed before the initial
* call. The counter is a 128-bit, big-endian value in |ivec| and is
* incremented by this function. */
void CRYPTO_ctr128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
const void *key, uint8_t ivec[16],
uint8_t ecount_buf[16], unsigned *num,
block128_f block);
/* CRYPTO_ctr128_encrypt_ctr32 acts like |CRYPTO_ctr128_encrypt| but takes
* |ctr|, a function that performs CTR mode but only deals with the lower 32
* bits of the counter. This is useful when |ctr| can be an optimised
* function. */
void CRYPTO_ctr128_encrypt_ctr32(const uint8_t *in, uint8_t *out, size_t len,
const void *key, uint8_t ivec[16],
uint8_t ecount_buf[16], unsigned *num,
ctr128_f ctr);
#if !defined(OPENSSL_NO_ASM) && \
(defined(OPENSSL_X86) || defined(OPENSSL_X86_64))
void aesni_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out, size_t blocks,
const void *key, const uint8_t *ivec);
#endif
/* GCM.
*
* This API differs from the upstream API slightly. The |GCM128_CONTEXT| does
* not have a |key| pointer that points to the key as upstream's version does.
* Instead, every function takes a |key| parameter. This way |GCM128_CONTEXT|
* can be safely copied. */
typedef struct gcm128_context GCM128_CONTEXT;
/* CRYPTO_ghash_init writes a precomputed table of powers of |gcm_key| to
* |out_table| and sets |*out_mult| and |*out_hash| to (potentially hardware
* accelerated) functions for performing operations in the GHASH field. If the
* assembly functions |aesni_gcm_encrypt| and |aesni_gcm_decrypt| can be used,
* |*out_use_aesni_gcm_crypt| will be true. */
void CRYPTO_ghash_init(gmult_func *out_mult, ghash_func *out_hash, u128
*out_key, u128 out_table[16], int *out_use_aesni_gcm_crypt, const uint8_t
*gcm_key);
/* CRYPTO_gcm128_init initialises |ctx| to use |block| (typically AES) with
* the given key. */
OPENSSL_EXPORT void CRYPTO_gcm128_init(GCM128_CONTEXT *ctx, const void *key,
block128_f block);
/* CRYPTO_gcm128_setiv sets the IV (nonce) for |ctx|. The |key| must be the
* same key that was passed to |CRYPTO_gcm128_init|. */
OPENSSL_EXPORT void CRYPTO_gcm128_setiv(GCM128_CONTEXT *ctx, const void *key,
const uint8_t *iv, size_t iv_len);
/* CRYPTO_gcm128_aad sets the authenticated data for an instance of GCM.
* This must be called before and data is encrypted. It returns one on success
* and zero otherwise. */
OPENSSL_EXPORT int CRYPTO_gcm128_aad(GCM128_CONTEXT *ctx, const uint8_t *aad,
size_t len);
/* CRYPTO_gcm128_encrypt encrypts |len| bytes from |in| to |out|. The |key|
* must be the same key that was passed to |CRYPTO_gcm128_init|. It returns one
* on success and zero otherwise. */
OPENSSL_EXPORT int CRYPTO_gcm128_encrypt(GCM128_CONTEXT *ctx, const void *key,
const uint8_t *in, uint8_t *out,
size_t len);
/* CRYPTO_gcm128_decrypt decrypts |len| bytes from |in| to |out|. The |key|
* must be the same key that was passed to |CRYPTO_gcm128_init|. It returns one
* on success and zero otherwise. */
OPENSSL_EXPORT int CRYPTO_gcm128_decrypt(GCM128_CONTEXT *ctx, const void *key,
const uint8_t *in, uint8_t *out,
size_t len);
/* CRYPTO_gcm128_encrypt_ctr32 encrypts |len| bytes from |in| to |out| using
* a CTR function that only handles the bottom 32 bits of the nonce, like
* |CRYPTO_ctr128_encrypt_ctr32|. The |key| must be the same key that was
* passed to |CRYPTO_gcm128_init|. It returns one on success and zero
* otherwise. */
OPENSSL_EXPORT int CRYPTO_gcm128_encrypt_ctr32(GCM128_CONTEXT *ctx,
const void *key,
const uint8_t *in, uint8_t *out,
size_t len, ctr128_f stream);
/* CRYPTO_gcm128_decrypt_ctr32 decrypts |len| bytes from |in| to |out| using
* a CTR function that only handles the bottom 32 bits of the nonce, like
* |CRYPTO_ctr128_encrypt_ctr32|. The |key| must be the same key that was
* passed to |CRYPTO_gcm128_init|. It returns one on success and zero
* otherwise. */
OPENSSL_EXPORT int CRYPTO_gcm128_decrypt_ctr32(GCM128_CONTEXT *ctx,
const void *key,
const uint8_t *in, uint8_t *out,
size_t len, ctr128_f stream);
/* CRYPTO_gcm128_finish calculates the authenticator and compares it against
* |len| bytes of |tag|. It returns one on success and zero otherwise. */
OPENSSL_EXPORT int CRYPTO_gcm128_finish(GCM128_CONTEXT *ctx, const uint8_t *tag,
size_t len);
/* CRYPTO_gcm128_tag calculates the authenticator and copies it into |tag|.
* The minimum of |len| and 16 bytes are copied into |tag|. */
OPENSSL_EXPORT void CRYPTO_gcm128_tag(GCM128_CONTEXT *ctx, uint8_t *tag,
size_t len);
/* CBC. */
/* cbc128_f is the type of a function that performs CBC-mode encryption. */
typedef void (*cbc128_f)(const uint8_t *in, uint8_t *out, size_t len,
const void *key, uint8_t ivec[16], int enc);
/* CRYPTO_cbc128_encrypt encrypts |len| bytes from |in| to |out| using the
* given IV and block cipher in CBC mode. The input need not be a multiple of
* 128 bits long, but the output will round up to the nearest 128 bit multiple,
* zero padding the input if needed. The IV will be updated on return. */
void CRYPTO_cbc128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
const void *key, uint8_t ivec[16], block128_f block);
/* CRYPTO_cbc128_decrypt decrypts |len| bytes from |in| to |out| using the
* given IV and block cipher in CBC mode. If |len| is not a multiple of 128
* bits then only that many bytes will be written, but a multiple of 128 bits
* is always read from |in|. The IV will be updated on return. */
void CRYPTO_cbc128_decrypt(const uint8_t *in, uint8_t *out, size_t len,
const void *key, uint8_t ivec[16], block128_f block);
/* OFB. */
/* CRYPTO_ofb128_encrypt encrypts (or decrypts, it's the same with OFB mode)
* |len| bytes from |in| to |out| using |block| in OFB mode. There's no
* requirement that |len| be a multiple of any value and any partial blocks are
* stored in |ivec| and |*num|, the latter must be zero before the initial
* call. */
void CRYPTO_ofb128_encrypt(const uint8_t *in, uint8_t *out,
size_t len, const void *key, uint8_t ivec[16],
unsigned *num, block128_f block);
/* CFB. */
/* CRYPTO_cfb128_encrypt encrypts (or decrypts, if |enc| is zero) |len| bytes
* from |in| to |out| using |block| in CFB mode. There's no requirement that
* |len| be a multiple of any value and any partial blocks are stored in |ivec|
* and |*num|, the latter must be zero before the initial call. */
void CRYPTO_cfb128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
const void *key, uint8_t ivec[16], unsigned *num,
int enc, block128_f block);
/* CRYPTO_cfb128_8_encrypt encrypts (or decrypts, if |enc| is zero) |len| bytes
* from |in| to |out| using |block| in CFB-8 mode. Prior to the first call
* |num| should be set to zero. */
void CRYPTO_cfb128_8_encrypt(const uint8_t *in, uint8_t *out, size_t len,
const void *key, uint8_t ivec[16], unsigned *num,
int enc, block128_f block);
/* CRYPTO_cfb128_1_encrypt encrypts (or decrypts, if |enc| is zero) |len| bytes
* from |in| to |out| using |block| in CFB-1 mode. Prior to the first call
* |num| should be set to zero. */
void CRYPTO_cfb128_1_encrypt(const uint8_t *in, uint8_t *out, size_t bits,
const void *key, uint8_t ivec[16], unsigned *num,
int enc, block128_f block);
size_t CRYPTO_cts128_encrypt_block(const uint8_t *in, uint8_t *out, size_t len,
const void *key, uint8_t ivec[16],
block128_f block);
/* POLYVAL.
*
* POLYVAL is a polynomial authenticator that operates over a field very
* similar to the one that GHASH uses. See
* https://tools.ietf.org/html/draft-irtf-cfrg-gcmsiv-02#section-3. */
typedef union {
uint64_t u[2];
uint8_t c[16];
} polyval_block;
struct polyval_ctx {
/* Note that the order of |S|, |H| and |Htable| is fixed by the MOVBE-based,
* x86-64, GHASH assembly. */
polyval_block S;
u128 H;
u128 Htable[16];
gmult_func gmult;
ghash_func ghash;
};
/* CRYPTO_POLYVAL_init initialises |ctx| using |key|. */
void CRYPTO_POLYVAL_init(struct polyval_ctx *ctx, const uint8_t key[16]);
/* CRYPTO_POLYVAL_update_blocks updates the accumulator in |ctx| given the
* blocks from |in|. Only a whole number of blocks can be processed so |in_len|
* must be a multiple of 16. */
void CRYPTO_POLYVAL_update_blocks(struct polyval_ctx *ctx, const uint8_t *in,
size_t in_len);
/* CRYPTO_POLYVAL_finish writes the accumulator from |ctx| to |out|. */
void CRYPTO_POLYVAL_finish(const struct polyval_ctx *ctx, uint8_t out[16]);
#if defined(__cplusplus)
} /* extern C */
#endif
#endif /* OPENSSL_HEADER_MODES_INTERNAL_H */
Reference in New Issue View Git Blame Copy Permalink