types

[oweals/gnunet.git] / src / include / gnunet_crypto_lib.h

diff --git a/src/include/gnunet_crypto_lib.h b/src/include/gnunet_crypto_lib.h
index 168c79b2a52d59cfeabb49e70165abe994d41810..9303aa98c5fe5302593dd5ead09bf0bcece007a0 100644 (file)
--- a/src/include/gnunet_crypto_lib.h
+++ b/src/include/gnunet_crypto_lib.h
@@ -202,25 +202,31 @@ struct GNUNET_CRYPTO_AesInitializationVector
  * @param len the length of the buffer in bytes
  * @return the resulting CRC32 checksum
  */
-int GNUNET_CRYPTO_crc32_n (const void *buf, unsigned int len);
+int32_t GNUNET_CRYPTO_crc32_n (const void *buf, 
+                              size_t len);
 
 
 /**
  * Produce a random value.
  *
+ * @param mode desired quality of the random number
  * @param i the upper limit (exclusive) for the random number
- * @return a random value in the interval [0,i[.
+ * @return a random value in the interval [0,i) (exclusive).
  */
-unsigned int GNUNET_CRYPTO_random_u32 (enum GNUNET_CRYPTO_Quality,
-                                       unsigned int i);
+uint32_t GNUNET_CRYPTO_random_u32 (enum GNUNET_CRYPTO_Quality mode,
+                                  uint32_t i);
 
 
 /**
  * Random on unsigned 64-bit values.  We break them down into signed
  * 32-bit values and reassemble the 64-bit random value bit-wise.
+ *
+ * @param mode desired quality of the random number
+ * @param max value returned will be in range [0,max) (exclusive)
+ * @return random 64-bit number
  */
-unsigned long long GNUNET_CRYPTO_random_u64 (enum GNUNET_CRYPTO_Quality mode,
-                                             unsigned long long u);
+uint64_t GNUNET_CRYPTO_random_u64 (enum GNUNET_CRYPTO_Quality mode,
+                                  uint64_t max);
 
 
 /**
@@ -261,30 +267,30 @@ int GNUNET_CRYPTO_aes_check_session_key (const struct
  *        for streams.
  * @returns the size of the encrypted block, -1 for errors
  */
-int GNUNET_CRYPTO_aes_encrypt (const void *block,
-                               uint16_t len,
-                               const struct GNUNET_CRYPTO_AesSessionKey
-                               *sessionkey,
-                               const struct
-                               GNUNET_CRYPTO_AesInitializationVector *iv,
-                               void *result);
+ssize_t GNUNET_CRYPTO_aes_encrypt (const void *block,
+                                  size_t len,
+                                  const struct GNUNET_CRYPTO_AesSessionKey
+                                  *sessionkey,
+                                  const struct
+                                  GNUNET_CRYPTO_AesInitializationVector *iv,
+                                  void *result);
 
 
 /**
  * Decrypt a given block with the sessionkey.
  *
- * @param sessionkey the key used to decrypt
  * @param block the data to decrypt, encoded as returned by encrypt
  * @param size how big is the block?
+ * @param sessionkey the key used to decrypt
  * @param iv the initialization vector to use
  * @param result address to store the result at
  * @return -1 on failure, size of decrypted block on success
  */
-int GNUNET_CRYPTO_aes_decrypt (const struct GNUNET_CRYPTO_AesSessionKey
-                               *sessionkey, const void *block, uint16_t size,
-                               const struct
-                               GNUNET_CRYPTO_AesInitializationVector *iv,
-                               void *result);
+ssize_t GNUNET_CRYPTO_aes_decrypt (const void *block, 
+                                  size_t size,
+                                  const struct GNUNET_CRYPTO_AesSessionKey *sessionkey, 
+                                  const struct GNUNET_CRYPTO_AesInitializationVector *iv,
+                                  void *result);
 
 
 /**
@@ -316,16 +322,19 @@ int GNUNET_CRYPTO_hash_from_string (const char *enc,
  * result should be a positive number.
  * @return number between 0 and 65536
  */
-unsigned int GNUNET_CRYPTO_hash_distance_u32 (const GNUNET_HashCode * a,
-                                              const GNUNET_HashCode * b);
+uint32_t GNUNET_CRYPTO_hash_distance_u32 (const GNUNET_HashCode * a,
+                                         const GNUNET_HashCode * b);
 
 
 /**
- * Hash block of given size.
- * @param block the data to GNUNET_CRYPTO_hash, length is given as a second argument
+ * Compute hash of a given block.
+ *
+ * @param block the data to hash
+ * @param size size of the block
  * @param ret pointer to where to write the hashcode
  */
-void GNUNET_CRYPTO_hash (const void *block, unsigned int size,
+void GNUNET_CRYPTO_hash (const void *block, 
+                        size_t size,
                          GNUNET_HashCode * ret);
 
 
@@ -364,7 +373,8 @@ void GNUNET_CRYPTO_hash_file (struct GNUNET_SCHEDULER_Handle *sched,
 /**
  * Create a random hash code.
  */
-void GNUNET_CRYPTO_hash_create_random (GNUNET_HashCode * result);
+void GNUNET_CRYPTO_hash_create_random (enum GNUNET_CRYPTO_Quality mode,
+                                      GNUNET_HashCode * result);
 
 
 /**
@@ -492,7 +502,7 @@ void GNUNET_CRYPTO_rsa_key_get_public (const struct
  * @returns GNUNET_SYSERR on error, GNUNET_OK if ok
  */
 int GNUNET_CRYPTO_rsa_encrypt (const void *block,
-                               uint16_t size,
+                               size_t size,
                                const struct
                                GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded
                                *publicKey,
@@ -508,9 +518,11 @@ int GNUNET_CRYPTO_rsa_encrypt (const void *block,
  * @param size how many bytes of a result are expected? Must be exact.
  * @returns the size of the decrypted block (that is, size) or -1 on error
  */
-int GNUNET_CRYPTO_rsa_decrypt (const struct GNUNET_CRYPTO_RsaPrivateKey *key,
-                               const struct GNUNET_CRYPTO_RsaEncryptedData
-                               *block, void *result, uint16_t size);
+ssize_t GNUNET_CRYPTO_rsa_decrypt (const struct GNUNET_CRYPTO_RsaPrivateKey *key,
+                                  const struct GNUNET_CRYPTO_RsaEncryptedData
+                                  *block,
+                                  void *result, 
+                                  size_t size);
 
 
 /**