Added libtomcrypt

1 files changed, 72 insertions, 0 deletions

diff --git a/libtomcrypt/hashes/hash_memory.c b/libtomcrypt/hashes/hash_memory.c
new file mode 100644
index 0000000..8775355
--- /dev/null
+++ b/libtomcrypt/hashes/hash_memory.c
@@ -0,0 +1,72 @@
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis
+ *
+ * LibTomCrypt is a library that provides various cryptographic
+ * algorithms in a highly modular and flexible manner.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ *
+ * Tom St Denis, tomstdenis@gmail.com, http://libtom.org
+ */
+#include "tomcrypt.h"
+#include <ncr_int.h>
+#include <cryptodev_int.h>
+
+/**
+  @file hash_memory.c
+  Hash memory helper, Tom St Denis
+*/
+
+/**
+  Hash a block of memory and store the digest.
+  @param hash   The index of the hash you wish to use
+  @param in     The data you wish to hash
+  @param inlen  The length of the data to hash (octets)
+  @param out    [out] Where to store the digest
+  @param outlen [in/out] Max size and resulting size of the digest
+  @return CRYPT_OK if successful
+*/
+int hash_memory(int hash, const unsigned char *in, unsigned long inlen, unsigned char *out, unsigned long *outlen)
+{
+    int err;
+    const char* str;
+    struct hash_data hdata;
+    int digest_size;
+
+    LTC_ARGCHK(in     != NULL);
+    LTC_ARGCHK(out    != NULL);
+    LTC_ARGCHK(outlen != NULL);
+
+    if ((err = hash_is_valid(hash)) != CRYPT_OK) {
+        return err;
+    }
+
+    digest_size = _ncr_algo_digest_size(hash);
+    if (*outlen < digest_size) {
+       *outlen = digest_size;
+       return CRYPT_BUFFER_OVERFLOW;
+    }
+
+    err = cryptodev_hash_init( &data, _ncr_algo_to_str(hash), 0, NULL, 0);
+    if (err < 0) {
+       err = CRYPT_INVALID_HASH;
+       goto LBL_ERR;
+    }
+
+    if ((err = _cryptodev_hash_update(&hdata, in, inlen)) < 0) {
+       err = CRYPT_ERROR;
+       goto LBL_ERR;
+    }
+    
+    err = cryptodev_hash_final(&hdata, out);
+    
+    *outlen = digest_size;
+LBL_ERR:
+    cryptodev_hash_deinit(&hdata);
+#ifdef LTC_CLEAN_STACK
+    zeromem(md, sizeof(hash_state));
+#endif
+
+    return err;
+}
+