/*
digest.c -- Digest handling
- Copyright (C) 2007-2013 Guus Sliepen <guus@tinc-vpn.org>
+ Copyright (C) 2007-2016 Guus Sliepen <guus@tinc-vpn.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include "../logger.h"
static digest_t *digest_open(const EVP_MD *evp_md, int maclength) {
- digest_t *digest = xmalloc_and_zero(sizeof *digest);
+ digest_t *digest = xzalloc(sizeof *digest);
digest->digest = evp_md;
int digestlen = EVP_MD_size(digest->digest);
return digest_open(evp_md, maclength);
}
-digest_t *digest_open_sha1(int maclength) {
- return digest_open(EVP_sha1(), maclength);
-}
-
bool digest_set_key(digest_t *digest, const void *key, size_t len) {
digest->key = xrealloc(digest->key, len);
memcpy(digest->key, key, len);
unsigned char tmpdata[len];
if(digest->key) {
- HMAC(digest->digest, digest->key, digest->keylength, indata, inlen, tmpdata, NULL);
+ if(!HMAC(digest->digest, digest->key, digest->keylength, indata, inlen, tmpdata, NULL)) {
+ logger(DEBUG_ALWAYS, LOG_DEBUG, "Error creating digest: %s", ERR_error_string(ERR_get_error(), NULL));
+ return false;
+ }
} else {
- EVP_MD_CTX ctx;
+ EVP_MD_CTX *ctx = EVP_MD_CTX_create();
+ if(!ctx)
+ abort();
- if(!EVP_DigestInit(&ctx, digest->digest)
- || !EVP_DigestUpdate(&ctx, indata, inlen)
- || !EVP_DigestFinal(&ctx, tmpdata, NULL)) {
+ if(!EVP_DigestInit(ctx, digest->digest)
+ || !EVP_DigestUpdate(ctx, indata, inlen)
+ || !EVP_DigestFinal(ctx, tmpdata, NULL)) {
logger(DEBUG_ALWAYS, LOG_DEBUG, "Error creating digest: %s", ERR_error_string(ERR_get_error(), NULL));
+ EVP_MD_CTX_destroy(ctx);
return false;
}
+
+ EVP_MD_CTX_destroy(ctx);
}
memcpy(outdata, tmpdata, digest->maclength);
}
int digest_get_nid(const digest_t *digest) {
- return digest->digest ? digest->digest->type : 0;
+ if(!digest || !digest->digest)
+ return 0;
+
+ return EVP_MD_type(digest->digest);
}
size_t digest_keylength(const digest_t *digest) {
- return digest->digest->md_size;
+ if(!digest || !digest->digest)
+ return 0;
+
+ return EVP_MD_size(digest->digest);
}
size_t digest_length(const digest_t *digest) {
+ if(!digest)
+ return 0;
+
return digest->maclength;
}
bool digest_active(const digest_t *digest) {
- return digest && digest->digest && digest->digest->type != 0;
+ return digest && digest->digest && EVP_MD_type(digest->digest) != 0;
}