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base for ciphers and digests

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2009-11-10 01:01:11 +01:00
parent 58806db847
commit 39f7c91b50
4 changed files with 126 additions and 27 deletions
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85
include/grub/crypto.h
View file

@ -123,6 +123,7 @@ typedef struct gcry_cipher_spec
gcry_cipher_decrypt_t decrypt;
gcry_cipher_stencrypt_t stencrypt;
gcry_cipher_stdecrypt_t stdecrypt;
struct gcry_cipher_spec *next;
} gcry_cipher_spec_t;
/* Definition of a function used to report selftest failures.
@ -154,33 +155,75 @@ typedef struct cipher_extra_spec
cipher_set_extra_info_t set_extra_info;
} cipher_extra_spec_t;
/* (Forward declaration.) */
struct gcry_md_context;
/* Type for the md_init function. */
typedef void (*gcry_md_init_t) (void *c);
/* This object is used to hold a handle to a message digest object.
This structure is private - only to be used by the public gcry_md_*
macros. */
typedef struct gcry_md_handle
/* Type for the md_write function. */
typedef void (*gcry_md_write_t) (void *c, const void *buf, grub_size_t nbytes);
/* Type for the md_final function. */
typedef void (*gcry_md_final_t) (void *c);
/* Type for the md_read function. */
typedef unsigned char *(*gcry_md_read_t) (void *c);
typedef struct gcry_md_oid_spec
{
/* Actual context. */
struct gcry_md_context *ctx;
/* Buffer management. */
int bufpos;
int bufsize;
unsigned char buf[1];
} *gcry_md_hd_t;
const char *oidstring;
} gcry_md_oid_spec_t;
struct grub_cipher
/* Module specification structure for message digests. */
typedef struct gcry_md_spec
{
struct grub_cipher *next;
const char *name;
};
typedef struct grub_cipher *grub_cipher_t;
unsigned char *asnoid;
int asnlen;
gcry_md_oid_spec_t *oids;
int mdlen;
gcry_md_init_t init;
gcry_md_write_t write;
gcry_md_final_t final;
gcry_md_read_t read;
grub_size_t contextsize; /* allocate this amount of context */
struct gcry_md_spec *next;
} gcry_md_spec_t;
extern gcry_cipher_spec_t *EXPORT_VAR (grub_ciphers);
extern gcry_md_spec_t *EXPORT_VAR (grub_digests);
static inline void
grub_cipher_register (gcry_cipher_spec_t *cipher)
{
cipher->next = grub_ciphers;
grub_ciphers = cipher;
}
static inline void
grub_cipher_unregister (gcry_cipher_spec_t *cipher)
{
gcry_cipher_spec_t **ciph;
for (ciph = &grub_ciphers; *ciph; ciph = &((*ciph)->next))
if (*ciph == cipher)
*ciph = (*ciph)->next;
}
static inline void
grub_md_register (gcry_md_spec_t *digest)
{
digest->next = grub_digests;
grub_digests = digest;
}
static inline void
grub_md_unregister (gcry_md_spec_t *cipher)
{
gcry_md_spec_t **ciph;
for (ciph = &grub_digests; *ciph; ciph = &((*ciph)->next))
if (*ciph == cipher)
*ciph = (*ciph)->next;
}
extern grub_cipher_t EXPORT_VAR (grub_ciphers);
void EXPORT_FUNC(grub_burn_stack) (grub_size_t size);
#endif

33
include/grub/gcry_wrap.h
View file

@ -27,12 +27,45 @@
#define __GNU_LIBRARY__
#define DIM ARRAY_SIZE
typedef grub_uint64_t u64;
typedef grub_uint32_t u32;
typedef grub_uint16_t u16;
typedef grub_uint8_t byte;
typedef grub_size_t size_t;
#define U64_C(c) (c ## ULL)
#define _gcry_burn_stack grub_burn_stack
#define log_error(fmt, args...) grub_dprintf ("crypto", fmt, ## args)
#define PUBKEY_FLAG_NO_BLINDING (1 << 0)
#define CIPHER_INFO_NO_WEAK_KEY 1
#define HAVE_U64_TYPEDEF 1
typedef union {
int a;
short b;
char c[1];
long d;
#ifdef HAVE_U64_TYPEDEF
u64 e;
#endif
float f;
double g;
} PROPERLY_ALIGNED_TYPE;
#define gcry_assert(x) grub_assert_real(__FILE__, __LINE__, x)
static inline void
grub_assert_real (const char *file, int line, int cond)
{
if (cond)
grub_fatal ("Assertion failed at %s:%d\n", file, line);
}
#endif