/* Copyright (c) 2017, Google Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
#ifndef OPENSSL_HEADER_AES_INTERNAL_H
#define OPENSSL_HEADER_AES_INTERNAL_H
#include <stdlib.h>
#include <openssl/cpu.h>
#if defined(__cplusplus)
extern "C" {
#endif
#if !defined(OPENSSL_NO_ASM)
#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64)
#define HWAES
#define HWAES_ECB
OPENSSL_INLINE int hwaes_capable(void) {
return (OPENSSL_ia32cap_get()[1] & (1 << (57 - 32))) != 0;
}
#define VPAES
#if defined(OPENSSL_X86_64)
#define VPAES_CTR32
#endif
OPENSSL_INLINE int vpaes_capable(void) {
return (OPENSSL_ia32cap_get()[1] & (1 << (41 - 32))) != 0;
}
#elif defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)
#define HWAES
OPENSSL_INLINE int hwaes_capable(void) { return CRYPTO_is_ARMv8_AES_capable(); }
#if defined(OPENSSL_ARM)
#define BSAES
OPENSSL_INLINE int bsaes_capable(void) { return CRYPTO_is_NEON_capable(); }
#endif
#if defined(OPENSSL_AARCH64)
#define VPAES
#define VPAES_CTR32
OPENSSL_INLINE int vpaes_capable(void) { return CRYPTO_is_NEON_capable(); }
#endif
#elif defined(OPENSSL_PPC64LE)
#define HWAES
OPENSSL_INLINE int hwaes_capable(void) {
return CRYPTO_is_PPC64LE_vcrypto_capable();
}
#endif
#endif // !NO_ASM
#if defined(HWAES)
int aes_hw_set_encrypt_key(const uint8_t *user_key, const int bits,
AES_KEY *key);
int aes_hw_set_decrypt_key(const uint8_t *user_key, const int bits,
AES_KEY *key);
void aes_hw_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
void aes_hw_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
void aes_hw_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length,
const AES_KEY *key, uint8_t *ivec, const int enc);
void aes_hw_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out, size_t len,
const AES_KEY *key, const uint8_t ivec[16]);
#else
// If HWAES isn't defined then we provide dummy functions for each of the hwaes
// functions.
OPENSSL_INLINE int hwaes_capable(void) { return 0; }
OPENSSL_INLINE int aes_hw_set_encrypt_key(const uint8_t *user_key, int bits,
AES_KEY *key) {
abort();
}
OPENSSL_INLINE int aes_hw_set_decrypt_key(const uint8_t *user_key, int bits,
AES_KEY *key) {
abort();
}
OPENSSL_INLINE void aes_hw_encrypt(const uint8_t *in, uint8_t *out,
const AES_KEY *key) {
abort();
}
OPENSSL_INLINE void aes_hw_decrypt(const uint8_t *in, uint8_t *out,
const AES_KEY *key) {
abort();
}
OPENSSL_INLINE void aes_hw_cbc_encrypt(const uint8_t *in, uint8_t *out,
size_t length, const AES_KEY *key,
uint8_t *ivec, int enc) {
abort();
}
OPENSSL_INLINE void aes_hw_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out,
size_t len, const AES_KEY *key,
const uint8_t ivec[16]) {
abort();
}
#endif // !HWAES
#if defined(HWAES_ECB)
void aes_hw_ecb_encrypt(const uint8_t *in, uint8_t *out, size_t length,
const AES_KEY *key, const int enc);
#endif // HWAES_ECB
#if defined(BSAES)
// On platforms where BSAES gets defined (just above), then these functions are
// provided by asm. Note |bsaes_cbc_encrypt| requires |enc| to be zero.
void bsaes_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length,
const AES_KEY *key, uint8_t ivec[16], int enc);
void bsaes_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out, size_t len,
const AES_KEY *key, const uint8_t ivec[16]);
#else
OPENSSL_INLINE char bsaes_capable(void) { return 0; }
// On other platforms, bsaes_capable() will always return false and so the
// following will never be called.
OPENSSL_INLINE void bsaes_cbc_encrypt(const uint8_t *in, uint8_t *out,
size_t length, const AES_KEY *key,
uint8_t ivec[16], int enc) {
abort();
}
OPENSSL_INLINE void bsaes_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out,
size_t len, const AES_KEY *key,
const uint8_t ivec[16]) {
abort();
}
#endif // !BSAES
#if defined(VPAES)
// On platforms where VPAES gets defined (just above), then these functions are
// provided by asm.
int vpaes_set_encrypt_key(const uint8_t *userKey, int bits, AES_KEY *key);
int vpaes_set_decrypt_key(const uint8_t *userKey, int bits, AES_KEY *key);
void vpaes_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
void vpaes_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
void vpaes_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length,
const AES_KEY *key, uint8_t *ivec, int enc);
#if defined(VPAES_CTR32)
void vpaes_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out, size_t len,
const AES_KEY *key, const uint8_t ivec[16]);
#endif
#else
OPENSSL_INLINE char vpaes_capable(void) { return 0; }
// On other platforms, vpaes_capable() will always return false and so the
// following will never be called.
OPENSSL_INLINE int vpaes_set_encrypt_key(const uint8_t *userKey, int bits,
AES_KEY *key) {
abort();
}
OPENSSL_INLINE int vpaes_set_decrypt_key(const uint8_t *userKey, int bits,
AES_KEY *key) {
abort();
}
OPENSSL_INLINE void vpaes_encrypt(const uint8_t *in, uint8_t *out,
const AES_KEY *key) {
abort();
}
OPENSSL_INLINE void vpaes_decrypt(const uint8_t *in, uint8_t *out,
const AES_KEY *key) {
abort();
}
OPENSSL_INLINE void vpaes_cbc_encrypt(const uint8_t *in, uint8_t *out,
size_t length, const AES_KEY *key,
uint8_t *ivec, int enc) {
abort();
}
#endif // !VPAES
void aes_nohw_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
void aes_nohw_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
int aes_nohw_set_encrypt_key(const uint8_t *key, unsigned bits,
AES_KEY *aeskey);
int aes_nohw_set_decrypt_key(const uint8_t *key, unsigned bits,
AES_KEY *aeskey);
#if !defined(OPENSSL_NO_ASM) && \
(defined(OPENSSL_X86_64) || defined(OPENSSL_X86))
#define AES_NOHW_CBC
void aes_nohw_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
const AES_KEY *key, uint8_t *ivec, const int enc);
#endif
#if defined(__cplusplus)
} // extern C
#endif
#endif // OPENSSL_HEADER_AES_INTERNAL_H