agorise/c-multihash
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add blake lengths

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This commit is contained in:
Jakub Sztandera 2016-07-30 11:39:26 +01:00
parent 177faf1ee6
commit 78435fb421
2 changed files with 8 additions and 5 deletions
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3
include/mh/hashes.h
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@ -18,6 +18,9 @@ typedef enum {
MH_H_COUNT // number of hash functions MH_H_COUNT // number of hash functions
} mh_hash; } mh_hash;
// returns length in bytes or if returns is < 0 it is an error
int mh_hash_default_length(mh_hash hash);
int mh_hash_length(const unsigned char multihash[], int len, int *hash_length); int mh_hash_length(const unsigned char multihash[], int len, int *hash_length);
int mh_hash_function(const unsigned char multihash[], int len, mh_hash *hash); int mh_hash_function(const unsigned char multihash[], int len, mh_hash *hash);

10
src/hashes.c
View file

@ -1,5 +1,6 @@
/* vim: set ts=8 sw=8 noexpandtab: */ /* vim: set ts=8 sw=8 noexpandtab: */
#include "mh/hashes.h" #include "mh/hashes.h"
#include "mh/errors.h"
static const int hash_lengths[] = { static const int hash_lengths[] = {
@ -12,17 +13,16 @@ static const int hash_lengths[] = {
28, // sha3-224 28, // sha3-224
16, // shake-128 16, // shake-128
32, // shake-256 32, // shake-256
// TODO(Kubuxu): implement blake lengths 64, // blake2b
32, // blake2s
}; };
int mh_hash_default_length(mh_hash hash) { int mh_hash_default_length(mh_hash hash) {
if (hash > MH_H_SHAKE_256)
return -2; // TODO(Kubuxu): remove it after blake is implemented
if (hash < 0 || hash >= MH_H_COUNT) if (hash < 0 || hash >= MH_H_COUNT)
return -1; return MH_;
return hash_lengths[0]; return hash_lengths[hash];
} }