*/
#include "platform.h"
-#include "gnunet_common.h"
-#include "gnunet_crypto_lib.h"
-#include "gnunet_disk_lib.h"
-#include "gnunet_strings_lib.h"
+#include "gnunet_util_lib.h"
#include <gcrypt.h>
#define LOG(kind,...) GNUNET_log_from (kind, "util", __VA_ARGS__)
/**
* Hash block of given size.
*
- * @param block the data to GNUNET_CRYPTO_hash, length is given as a second argument
- * @param size the length of the data to GNUNET_CRYPTO_hash
+ * @param block the data to #GNUNET_CRYPTO_hash, length is given as a second argument
+ * @param size the length of the data to #GNUNET_CRYPTO_hash in @a block
* @param ret pointer to where to write the hashcode
*/
void
-GNUNET_CRYPTO_hash (const void *block, size_t size, struct GNUNET_HashCode * ret)
+GNUNET_CRYPTO_hash (const void *block,
+ size_t size,
+ struct GNUNET_HashCode *ret)
{
gcry_md_hash_buffer (GCRY_MD_SHA512, ret, block, size);
}
* safely cast to char*, a '\\0' termination is set).
*/
void
-GNUNET_CRYPTO_hash_to_enc (const struct GNUNET_HashCode * block,
+GNUNET_CRYPTO_hash_to_enc (const struct GNUNET_HashCode *block,
struct GNUNET_CRYPTO_HashAsciiEncoded *result)
{
char *np;
* Convert ASCII encoding back to hash code.
*
* @param enc the encoding
- * @param enclen number of characters in 'enc' (without 0-terminator, which can be missing)
+ * @param enclen number of characters in @a enc (without 0-terminator, which can be missing)
* @param result where to store the hash code
- * @return GNUNET_OK on success, GNUNET_SYSERR if result has the wrong encoding
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR if result has the wrong encoding
*/
int
-GNUNET_CRYPTO_hash_from_string2 (const char *enc, size_t enclen,
- struct GNUNET_HashCode * result)
+GNUNET_CRYPTO_hash_from_string2 (const char *enc,
+ size_t enclen,
+ struct GNUNET_HashCode *result)
{
char upper_enc[enclen];
- char* up_ptr = upper_enc;
+ char *up_ptr = upper_enc;
- GNUNET_STRINGS_utf8_toupper(enc, &up_ptr);
+ GNUNET_STRINGS_utf8_toupper (enc, up_ptr);
return GNUNET_STRINGS_string_to_data (upper_enc, enclen,
(unsigned char*) result,
/**
* @ingroup hash
- *
+ *
* Compute the distance between 2 hashcodes. The computation must be
* fast, not involve bits[0] or bits[4] (they're used elsewhere), and be
* somewhat consistent. And of course, the result should be a positive
* hashcode proximity.
*/
unsigned int
-GNUNET_CRYPTO_hash_distance_u32 (const struct GNUNET_HashCode * a,
- const struct GNUNET_HashCode * b)
+GNUNET_CRYPTO_hash_distance_u32 (const struct GNUNET_HashCode *a,
+ const struct GNUNET_HashCode *b)
{
unsigned int x1 = (a->bits[1] - b->bits[1]) >> 16;
unsigned int x2 = (b->bits[1] - a->bits[1]) >> 16;
* @param result set to b - a
*/
void
-GNUNET_CRYPTO_hash_difference (const struct GNUNET_HashCode * a,
- const struct GNUNET_HashCode * b,
- struct GNUNET_HashCode * result)
+GNUNET_CRYPTO_hash_difference (const struct GNUNET_HashCode *a,
+ const struct GNUNET_HashCode *b,
+ struct GNUNET_HashCode *result)
{
int i;
* @param iv set to a valid initialization vector
*/
void
-GNUNET_CRYPTO_hash_to_aes_key (const struct GNUNET_HashCode * hc,
- struct GNUNET_CRYPTO_AesSessionKey *skey,
- struct GNUNET_CRYPTO_AesInitializationVector *iv)
+GNUNET_CRYPTO_hash_to_aes_key (const struct GNUNET_HashCode *hc,
+ struct GNUNET_CRYPTO_SymmetricSessionKey *skey,
+ struct GNUNET_CRYPTO_SymmetricInitializationVector *iv)
{
- GNUNET_assert (sizeof (struct GNUNET_HashCode) >=
- GNUNET_CRYPTO_AES_KEY_LENGTH +
- sizeof (struct GNUNET_CRYPTO_AesInitializationVector));
- memcpy (skey, hc, GNUNET_CRYPTO_AES_KEY_LENGTH);
- memcpy (iv, &((char *) hc)[GNUNET_CRYPTO_AES_KEY_LENGTH],
- sizeof (struct GNUNET_CRYPTO_AesInitializationVector));
+ GNUNET_assert (GNUNET_YES ==
+ GNUNET_CRYPTO_kdf (skey, sizeof (struct GNUNET_CRYPTO_SymmetricSessionKey),
+ "Hash key derivation", strlen ("Hash key derivation"),
+ hc, sizeof (struct GNUNET_HashCode),
+ NULL, 0));
+ GNUNET_assert (GNUNET_YES ==
+ GNUNET_CRYPTO_kdf (iv, sizeof (struct GNUNET_CRYPTO_SymmetricInitializationVector),
+ "Initialization vector derivation", strlen ("Initialization vector derivation"),
+ hc, sizeof (struct GNUNET_HashCode),
+ NULL, 0));
}
/**
* Determine how many low order bits match in two
- * struct GNUNET_HashCodes. i.e. - 010011 and 011111 share
+ * `struct GNUNET_HashCode`s. i.e. - 010011 and 011111 share
* the first two lowest order bits, and therefore the
* return value is two (NOT XOR distance, nor how many
* bits match absolutely!).
* @return 1 if h1 > h2, -1 if h1 < h2 and 0 if h1 == h2.
*/
int
-GNUNET_CRYPTO_hash_cmp (const struct GNUNET_HashCode * h1, const struct GNUNET_HashCode * h2)
+GNUNET_CRYPTO_hash_cmp (const struct GNUNET_HashCode *h1,
+ const struct GNUNET_HashCode *h2)
{
unsigned int *i1;
unsigned int *i2;
/**
- * Find out which of the two GNUNET_CRYPTO_hash codes is closer to target
+ * Find out which of the two `struct GNUNET_HashCode`s is closer to target
* in the XOR metric (Kademlia).
*
* @param h1 some hash code
* @return -1 if h1 is closer, 1 if h2 is closer and 0 if h1==h2.
*/
int
-GNUNET_CRYPTO_hash_xorcmp (const struct GNUNET_HashCode * h1,
- const struct GNUNET_HashCode * h2,
- const struct GNUNET_HashCode * target)
+GNUNET_CRYPTO_hash_xorcmp (const struct GNUNET_HashCode *h1,
+ const struct GNUNET_HashCode *h2,
+ const struct GNUNET_HashCode *target)
{
int i;
unsigned int d1;
* @param key authentication key
* @param rkey root key
* @param salt salt
- * @param salt_len size of the salt
+ * @param salt_len size of the @a salt
* @param ... pair of void * & size_t for context chunks, terminated by NULL
*/
void
GNUNET_CRYPTO_hmac_derive_key (struct GNUNET_CRYPTO_AuthKey *key,
- const struct GNUNET_CRYPTO_AesSessionKey *rkey,
+ const struct GNUNET_CRYPTO_SymmetricSessionKey *rkey,
const void *salt, size_t salt_len, ...)
{
va_list argp;
* @param key authentication key
* @param rkey root key
* @param salt salt
- * @param salt_len size of the salt
+ * @param salt_len size of the @a salt
* @param argp pair of void * & size_t for context chunks, terminated by NULL
*/
void
GNUNET_CRYPTO_hmac_derive_key_v (struct GNUNET_CRYPTO_AuthKey *key,
- const struct GNUNET_CRYPTO_AesSessionKey *rkey,
+ const struct GNUNET_CRYPTO_SymmetricSessionKey *rkey,
const void *salt, size_t salt_len,
va_list argp)
{
- GNUNET_CRYPTO_kdf_v (key->key, sizeof (key->key), salt, salt_len, rkey->key,
- sizeof (rkey->key), argp);
+ GNUNET_CRYPTO_kdf_v (key->key, sizeof (key->key),
+ salt, salt_len,
+ rkey, sizeof (struct GNUNET_CRYPTO_SymmetricSessionKey),
+ argp);
}
*
* @param key secret key
* @param plaintext input plaintext
- * @param plaintext_len length of plaintext
+ * @param plaintext_len length of @a plaintext
* @param hmac where to store the hmac
*/
void
GNUNET_CRYPTO_hmac (const struct GNUNET_CRYPTO_AuthKey *key,
const void *plaintext, size_t plaintext_len,
- struct GNUNET_HashCode * hmac)
+ struct GNUNET_HashCode *hmac)
{
- gcry_md_hd_t md;
+ static int once;
+ static gcry_md_hd_t md;
const unsigned char *mc;
- GNUNET_assert (GPG_ERR_NO_ERROR ==
- gcry_md_open (&md, GCRY_MD_SHA512, GCRY_MD_FLAG_HMAC));
+ if (! once)
+ {
+ once = 1;
+ GNUNET_assert (GPG_ERR_NO_ERROR ==
+ gcry_md_open (&md, GCRY_MD_SHA512, GCRY_MD_FLAG_HMAC));
+ }
+ else
+ {
+ gcry_md_reset (md);
+ }
gcry_md_setkey (md, key->key, sizeof (key->key));
gcry_md_write (md, plaintext, plaintext_len);
mc = gcry_md_read (md, GCRY_MD_SHA512);
- if (mc != NULL)
- memcpy (hmac->bits, mc, sizeof (hmac->bits));
- gcry_md_close (md);
+ GNUNET_assert (NULL != mc);
+ memcpy (hmac->bits, mc, sizeof (hmac->bits));
}
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