+/*
+Copyright (c) 2013 Eugene Crosser
+
+This software is provided 'as-is', without any express or implied
+warranty. In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you must
+ not claim that you wrote the original software. If you use this
+ software in a product, an acknowledgment in the product documentation
+ would be appreciated but is not required.
+
+ 2. Altered source versions must be plainly marked as such, and must
+ not be misrepresented as being the original software.
+
+ 3. This notice may not be removed or altered from any source
+ distribution.
+*/
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
#include <tomcrypt.h>
#include "crypto_if.h"
-static int tom_encrypt(void *pt, int ptlen, void *key, int keylen,
- void *ct, int *ctlen)
+static const char *tom_init(void)
{
- symmentric_cbc cbc;
- unsigned char iv[16] = {0};
+ /* nothing to initialize */
+ return "tomcrypt";
+}
+
+static unsigned long tom_encrypt(void *key, int keylen, void *iv,
+ void *pt, void *ct, int tlen)
+{
+ symmetric_CBC cbc;
int index, err;
- if ((index = register_cipher(&aes_desc)) == -1) return -1;
- // if ((index = find_cipher("aes")) == -1) return -1;
- cipher = cipher_descriptor[index];
+ if ((index = register_cipher(&aes_desc)) == -1)
+ return CRYPT_INVALID_CIPHER;
if ((err = cbc_start(index, iv, key, keylen, 0, &cbc)) != CRYPT_OK)
return err;
- if ((err = cbc_encrypt(pt, ct, ptlen, &cbc)) != CRYPT_OK)
- return err;
- if ((err = cbc_done(&cbc)) != CRYPT_OK)
- return err;
- if ((err = unregister_cipher(&aes_desc)) != CRYPT_OK)
+ err= cbc_encrypt(pt, ct, tlen, &cbc);
+ (void)cbc_done(&cbc);
+ return err;
+}
+
+static unsigned long tom_decrypt(void *key, int keylen, void *iv,
+ void *ct, void *pt, int tlen)
+{
+ symmetric_CBC cbc;
+ int index, err;
+
+ if ((index = register_cipher(&aes_desc)) == -1)
+ return CRYPT_INVALID_CIPHER;
+ if ((err = cbc_start(index, iv, key, keylen, 0, &cbc)) != CRYPT_OK)
return err;
- return 0;
+ err= cbc_decrypt(ct, pt, tlen, &cbc);
+ (void)cbc_done(&cbc);
+ return err;
}
-static int tom_decrypt()
+static unsigned long tom_hash(void *pt, int tlen, void *tag, int *taglen)
{
- return 0;
+ int index, rc;
+ unsigned long ltaglen = *taglen;
+
+ if ((index = register_hash(&sha1_desc)) == -1)
+ return CRYPT_INVALID_HASH;
+ rc = hash_memory(index, pt, tlen, tag, <aglen);
+ *taglen = ltaglen;
+ return rc;
}
-static int tom_hash()
+static unsigned long tom_hmac(void *key, int keylen,
+ void *pt, int tlen, void *tag, int *taglen)
{
- return 0;
+ int index, rc;
+ unsigned long ltaglen = *taglen;
+
+ if ((index = register_hash(&sha1_desc)) == -1)
+ return CRYPT_INVALID_HASH;
+ rc = hmac_memory(index, key, keylen, pt, tlen, tag, <aglen);
+ *taglen = ltaglen;
+ return rc;
}
-static int tom_hmac()
+static const char *tom_errstr(unsigned long err)
{
- return 0;
+ return error_to_string((int)err);
}
struct crypto_interface tom_crypto_if = {
- .name = "tomcrypt",
+ .init = tom_init,
.encrypt = tom_encrypt,
.decrypt = tom_decrypt,
.hash = tom_hash,
.hmac = tom_hmac,
+ .errstr = tom_errstr,
};