Tor  0.4.3.0-alpha-dev
Data Structures | Macros | Functions
crypto_digest_nss.c File Reference

Block of functions related with digest and xof utilities and operations (NSS specific implementations). More...

#include "lib/container/smartlist.h"
#include "lib/crypt_ops/crypto_digest.h"
#include "lib/crypt_ops/crypto_util.h"
#include "lib/log/log.h"
#include "lib/log/util_bug.h"
#include "keccak-tiny/keccak-tiny.h"
#include <stdlib.h>
#include <string.h>
#include "lib/arch/bytes.h"
#include <pk11pub.h>

Go to the source code of this file.

Data Structures

struct  crypto_digest_t
 

Macros

#define STRUCT_FIELD_SIZE(st, f)   (sizeof( ((st*)0)->f ))
 
#define END_OF_FIELD(f)
 

Functions

static SECOidTag digest_alg_to_nss_oid (digest_algorithm_t alg)
 
static int digest_nss_internal (SECOidTag alg, char *digest, unsigned len_out, const char *msg, size_t msg_len)
 
static bool library_supports_digest (digest_algorithm_t alg)
 
int crypto_digest (char *digest, const char *m, size_t len)
 
int crypto_digest256 (char *digest, const char *m, size_t len, digest_algorithm_t algorithm)
 
int crypto_digest512 (char *digest, const char *m, size_t len, digest_algorithm_t algorithm)
 
static size_t crypto_digest_alloc_bytes (digest_algorithm_t alg)
 
static crypto_digest_tcrypto_digest_new_internal (digest_algorithm_t algorithm)
 
crypto_digest_tcrypto_digest_new (void)
 
crypto_digest_tcrypto_digest256_new (digest_algorithm_t algorithm)
 
crypto_digest_tcrypto_digest512_new (digest_algorithm_t algorithm)
 
void crypto_digest_free_ (crypto_digest_t *digest)
 
void crypto_digest_add_bytes (crypto_digest_t *digest, const char *data, size_t len)
 
void crypto_digest_get_digest (crypto_digest_t *digest, char *out, size_t out_len)
 
crypto_digest_tcrypto_digest_dup (const crypto_digest_t *digest)
 
void crypto_digest_checkpoint (crypto_digest_checkpoint_t *checkpoint, const crypto_digest_t *digest)
 
void crypto_digest_restore (crypto_digest_t *digest, const crypto_digest_checkpoint_t *checkpoint)
 
void crypto_digest_assign (crypto_digest_t *into, const crypto_digest_t *from)
 
void crypto_digest_smartlist (char *digest_out, size_t len_out, const smartlist_t *lst, const char *append, digest_algorithm_t alg)
 
void crypto_digest_smartlist_prefix (char *digest_out, size_t len_out, const char *prepend, const smartlist_t *lst, const char *append, digest_algorithm_t alg)
 
void crypto_hmac_sha256 (char *hmac_out, const char *key, size_t key_len, const char *msg, size_t msg_len)
 

Detailed Description

Block of functions related with digest and xof utilities and operations (NSS specific implementations).

Definition in file crypto_digest_nss.c.

Macro Definition Documentation

◆ END_OF_FIELD

#define END_OF_FIELD (   f)
Value:
(offsetof(crypto_digest_t, f) + \
STRUCT_FIELD_SIZE(crypto_digest_t, f))

Function Documentation

◆ crypto_digest()

int crypto_digest ( char *  digest,
const char *  m,
size_t  len 
)

Compute the SHA1 digest of the len bytes on data stored in m. Write the DIGEST_LEN byte result into digest. Return 0 on success, -1 on failure.

Definition at line 110 of file crypto_digest_nss.c.

◆ crypto_digest256()

int crypto_digest256 ( char *  digest,
const char *  m,
size_t  len,
digest_algorithm_t  algorithm 
)

Compute a 256-bit digest of len bytes in data stored in m, using the algorithm algorithm. Write the DIGEST_LEN256-byte result into digest. Return 0 on success, -1 on failure.

Definition at line 121 of file crypto_digest_nss.c.

◆ crypto_digest256_new()

crypto_digest_t* crypto_digest256_new ( digest_algorithm_t  algorithm)

Allocate and return a new digest object to compute 256-bit digests using algorithm.

C_RUST_COUPLED: external::crypto_digest::crypto_digest256_new C_RUST_COUPLED: crypto::digest::Sha256::default

Definition at line 272 of file crypto_digest_nss.c.

◆ crypto_digest512()

int crypto_digest512 ( char *  digest,
const char *  m,
size_t  len,
digest_algorithm_t  algorithm 
)

Compute a 512-bit digest of len bytes in data stored in m, using the algorithm algorithm. Write the DIGEST_LEN512-byte result into digest. Return 0 on success, -1 on failure.

Definition at line 145 of file crypto_digest_nss.c.

◆ crypto_digest512_new()

crypto_digest_t* crypto_digest512_new ( digest_algorithm_t  algorithm)

Allocate and return a new digest object to compute 512-bit digests using algorithm.

Definition at line 281 of file crypto_digest_nss.c.

◆ crypto_digest_add_bytes()

void crypto_digest_add_bytes ( crypto_digest_t digest,
const char *  data,
size_t  len 
)

Add len bytes from data to the digest object.

C_RUST_COUPLED: external::crypto_digest::crypto_digest_add_bytess C_RUST_COUPLED: crypto::digest::Sha256::process

Definition at line 308 of file crypto_digest_nss.c.

Referenced by crypto_digest_smartlist_prefix().

◆ crypto_digest_alloc_bytes()

static size_t crypto_digest_alloc_bytes ( digest_algorithm_t  alg)
static

Return the number of bytes we need to malloc in order to get a crypto_digest_t for alg, or the number of bytes we need to wipe when we free one.

Definition at line 196 of file crypto_digest_nss.c.

Referenced by crypto_digest_assign(), crypto_digest_checkpoint(), crypto_digest_dup(), crypto_digest_free_(), and crypto_digest_restore().

◆ crypto_digest_assign()

void crypto_digest_assign ( crypto_digest_t into,
const crypto_digest_t from 
)

Replace the state of the digest object into with the state of the digest object from. Requires that 'into' and 'from' have the same digest type.

Definition at line 450 of file crypto_digest_nss.c.

◆ crypto_digest_checkpoint()

void crypto_digest_checkpoint ( crypto_digest_checkpoint_t checkpoint,
const crypto_digest_t digest 
)

Temporarily save the state of digest in checkpoint. Asserts that digest is a SHA1 digest object.

Definition at line 409 of file crypto_digest_nss.c.

◆ crypto_digest_dup()

crypto_digest_t* crypto_digest_dup ( const crypto_digest_t digest)

Allocate and return a new digest object with the same state as digest

C_RUST_COUPLED: external::crypto_digest::crypto_digest_dup C_RUST_COUPLED: impl Clone for crypto::digest::Sha256

Definition at line 392 of file crypto_digest_nss.c.

◆ crypto_digest_free_()

void crypto_digest_free_ ( crypto_digest_t digest)

Deallocate a digest object.

Definition at line 290 of file crypto_digest_nss.c.

◆ crypto_digest_get_digest()

void crypto_digest_get_digest ( crypto_digest_t digest,
char *  out,
size_t  out_len 
)

Compute the hash of the data that has been passed to the digest object; write the first out_len bytes of the result to out. out_len must be <= DIGEST512_LEN.

C_RUST_COUPLED: external::crypto_digest::crypto_digest_get_digest C_RUST_COUPLED: impl digest::FixedOutput for Sha256

Definition at line 348 of file crypto_digest_nss.c.

Referenced by crypto_digest_smartlist_prefix().

◆ crypto_digest_new()

crypto_digest_t* crypto_digest_new ( void  )

Allocate and return a new digest object to compute SHA1 digests.

Definition at line 260 of file crypto_digest_nss.c.

◆ crypto_digest_new_internal()

static crypto_digest_t* crypto_digest_new_internal ( digest_algorithm_t  algorithm)
static

Internal function: create and return a new digest object for 'algorithm'. Does not typecheck the algorithm.

Definition at line 224 of file crypto_digest_nss.c.

Referenced by crypto_digest_new(), and crypto_digest_smartlist_prefix().

◆ crypto_digest_restore()

void crypto_digest_restore ( crypto_digest_t digest,
const crypto_digest_checkpoint_t checkpoint 
)

Restore the state of digest from checkpoint. Asserts that digest is a SHA1 digest object. Requires that the state was previously stored with crypto_digest_checkpoint()

Definition at line 431 of file crypto_digest_nss.c.

◆ crypto_digest_smartlist()

void crypto_digest_smartlist ( char *  digest_out,
size_t  len_out,
const smartlist_t lst,
const char *  append,
digest_algorithm_t  alg 
)

Given a list of strings in lst, set the len_out-byte digest at digest_out to the hash of the concatenation of those strings, plus the optional string append, computed with the algorithm alg. out_len must be <= DIGEST512_LEN.

Definition at line 471 of file crypto_digest_nss.c.

◆ crypto_digest_smartlist_prefix()

void crypto_digest_smartlist_prefix ( char *  digest_out,
size_t  len_out,
const char *  prepend,
const smartlist_t lst,
const char *  append,
digest_algorithm_t  alg 
)

Given a list of strings in lst, set the len_out-byte digest at digest_out to the hash of the concatenation of: the optional string prepend, those strings, and the optional string append, computed with the algorithm alg. len_out must be <= DIGEST512_LEN.

Definition at line 486 of file crypto_digest_nss.c.

Referenced by crypto_digest_smartlist().

◆ crypto_hmac_sha256()

void crypto_hmac_sha256 ( char *  hmac_out,
const char *  key,
size_t  key_len,
const char *  msg,
size_t  msg_len 
)

Compute the HMAC-SHA-256 of the msg_len bytes in msg, using the key of length key_len. Store the DIGEST256_LEN-byte result in hmac_out. Asserts on failure.

Definition at line 508 of file crypto_digest_nss.c.

◆ digest_alg_to_nss_oid()

static SECOidTag digest_alg_to_nss_oid ( digest_algorithm_t  alg)
static

Convert a digest_algorithm_t (used by tor) to a HashType (used by NSS). On failure, return SEC_OID_UNKNOWN.

Definition at line 34 of file crypto_digest_nss.c.

◆ digest_nss_internal()

static int digest_nss_internal ( SECOidTag  alg,
char *  digest,
unsigned  len_out,
const char *  msg,
size_t  msg_len 
)
static

Helper: Compute an unkeyed digest of the msg_len bytes at msg, using the digest algorithm specified by alg. Store the result in the len_out-byte buffer at digest. Return the number of bytes written on success, and -1 on failure.

Definition at line 53 of file crypto_digest_nss.c.

Referenced by crypto_digest().

◆ library_supports_digest()

static bool library_supports_digest ( digest_algorithm_t  alg)
static

True iff alg is implemented in our crypto library, and we want to use that implementation

Definition at line 89 of file crypto_digest_nss.c.

Referenced by crypto_digest_assign(), crypto_digest_checkpoint(), crypto_digest_free_(), and crypto_digest_restore().