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Remove unnecessary heap allocations during ed25519 hashing (#3040)

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cryptocode 2020-11-06 19:57:23 +01:00 • committed by GitHub
commit f89e42a162
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 7 additions and 10 deletions
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9
crypto/ed25519-donna/ed25519-hash-custom.h
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@ -9,10 +9,9 @@
void ed25519_hash(uint8_t *hash, const uint8_t *in, size_t inlen);
*/
typedef struct ed25519_hash_context_t
{
void * blake2;
} ed25519_hash_context;
#include <nano/crypto/blake2/blake2.h>
typedef blake2b_state ed25519_hash_context;
void ed25519_hash_init (ed25519_hash_context * ctx);
@ -20,4 +19,4 @@ void ed25519_hash_update (ed25519_hash_context * ctx, uint8_t const * in, size_t
void ed25519_hash_final (ed25519_hash_context * ctx, uint8_t * out);
void ed25519_hash (uint8_t * out, uint8_t const * in, size_t inlen);
void ed25519_hash (uint8_t * out, uint8_t const * in, size_t inlen);

8
nano/crypto_lib/interface.cpp
View file

@ -9,19 +9,17 @@ void ed25519_randombytes_unsafe (void * out, size_t outlen)
}
void ed25519_hash_init (ed25519_hash_context * ctx)
{
ctx->blake2 = new blake2b_state;
blake2b_init (reinterpret_cast<blake2b_state *> (ctx->blake2), 64);
blake2b_init (ctx, 64);
}
void ed25519_hash_update (ed25519_hash_context * ctx, uint8_t const * in, size_t inlen)
{
blake2b_update (reinterpret_cast<blake2b_state *> (ctx->blake2), in, inlen);
blake2b_update (ctx, in, inlen);
}
void ed25519_hash_final (ed25519_hash_context * ctx, uint8_t * out)
{
blake2b_final (reinterpret_cast<blake2b_state *> (ctx->blake2), out, 64);
delete reinterpret_cast<blake2b_state *> (ctx->blake2);
blake2b_final (ctx, out, 64);
}
void ed25519_hash (uint8_t * out, uint8_t const * in, size_t inlen)