Hashing functions
General functions for hashing data. More...
Collaboration diagram for Hashing functions:
Functions | |
| uint32_t | HASH_fnv1a_32 (const void *data_in, size_t num_bytes) |
| Calculate the 32-bit fnv1a non-crypto hash of a block of data. More... | |
| uint64_t | HASH_fnv1a_64 (const void *data_in, size_t num_bytes) |
| Calculate the 64-bit fnv1a non-crypto hash of a block of data. More... | |
| void | HASH_fnv1a_64_stream (const void *data_in, size_t num_bytes, uint64_t *hash) |
| Streaming version of HASH_fnv1a_64. More... | |
| uint32_t | HASH_CRC32 (uint8_t *data, uint32_t dataLen) |
| Calculate the CRC32 hash of a block of data. More... | |
| void | HASH_CRC32_stream (uint8_t *data, uint32_t dataLen, uint32_t *crc) |
| Streaming version of HASH_CRC32. More... | |
Detailed Description
General functions for hashing data.
Function Documentation
◆ HASH_CRC32()
| uint32_t HASH_CRC32 | ( | uint8_t * | data, |
| uint32_t | dataLen | ||
| ) |
Calculate the CRC32 hash of a block of data.
- Parameters
-
data The data to hash dataLen The sizeof the data to be hashed (in bytes)
- Returns
- 32-bit CRC hash
◆ HASH_CRC32_stream()
| void HASH_CRC32_stream | ( | uint8_t * | data, |
| uint32_t | dataLen, | ||
| uint32_t * | crc | ||
| ) |
Streaming version of HASH_CRC32.
Usage notes: This function leaves out
- The initialisation of the CRC to 0xFFFFFFFF at the beginning, and
- the one's complement operation at the end. So these two steps have to be handled outside of this function, by the code that uses it. (For example, see HASH_CRC32, which uses HASH_CRC32_stream).
- Parameters
-
data The data to hash dataLen The sizeof the data to be hashed (in bytes) crc Output variable into which the (partial) crc computation is stored
◆ HASH_fnv1a_32()
| uint32_t HASH_fnv1a_32 | ( | const void * | data_in, |
| size_t | num_bytes | ||
| ) |
Calculate the 32-bit fnv1a non-crypto hash of a block of data.
- Parameters
-
data_in The data to hash num_bytes The sizeof the data to be hashed (in bytes)
- Returns
- 32-bit fnv1a non-crypto hash
◆ HASH_fnv1a_64()
| uint64_t HASH_fnv1a_64 | ( | const void * | data_in, |
| size_t | num_bytes | ||
| ) |
Calculate the 64-bit fnv1a non-crypto hash of a block of data.
- Parameters
-
data_in The data to hash num_bytes The sizeof the data to be hashed (in bytes)
- Returns
- 64-bit fnv1a non-crypto hash
◆ HASH_fnv1a_64_stream()
| void HASH_fnv1a_64_stream | ( | const void * | data_in, |
| size_t | num_bytes, | ||
| uint64_t * | hash | ||
| ) |
Streaming version of HASH_fnv1a_64.
Usage note: This function leaves out the initialisation of the hash to the basis64 at the beginning. So this has to be done before this function is done. (For example, see HASH_fnv1a_64, which uses HASH_fnv1a_64_stream).
- Parameters
-
data_in The data to hash num_bytes The sizeof the data to be hashed (in bytes) hash Output variable into which the (partial) hash computation is stored Should be initialised to basis64 (14695981039346656037ULL)
