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[pam_pcsc_cr.git] / tom_crypto.c

diff --git a/tom_crypto.c b/tom_crypto.c
index 97a18e19fafcab5169b3963a7310a1befccd3388..b5bed3e06d0fe5da41293903ded63b15f281c8dc 100644 (file)
--- a/tom_crypto.c
+++ b/tom_crypto.c
@@ -1,9 +1,41 @@
+/*
+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 unsigned long tom_encrypt(void *key, int keylen, void *iv,
-                       void *pt, void *ct, int tlen)
+static const char *tom_init(void)
+{
+       /* nothing to initialize */
+       return "tomcrypt";
+}
+
+static unsigned long tom_encrypt(const void *key, const int keylen, void *iv,
+                       const void *pt, void *ct, const int tlen)
 {
        symmetric_CBC cbc;
        int index, err;
@@ -17,8 +49,8 @@ static unsigned long tom_encrypt(void *key, int keylen, void *iv,
        return err;
 }
 
-static unsigned long tom_decrypt(void *key, int keylen, void *iv,
-                       void *ct, void *pt, int tlen)
+static unsigned long tom_decrypt(const void *key, const int keylen, void *iv,
+                       const void *ct, void *pt, const int tlen)
 {
        symmetric_CBC cbc;
        int index, err;
@@ -32,7 +64,8 @@ static unsigned long tom_decrypt(void *key, int keylen, void *iv,
        return err;
 }
 
-static unsigned long tom_hash(void *pt, int tlen, void *tag, int *taglen)
+static unsigned long tom_hash(const void *pt, const int tlen,
+                       void *tag, int *taglen)
 {
        int index, rc;
        unsigned long ltaglen = *taglen;
@@ -44,13 +77,13 @@ static unsigned long tom_hash(void *pt, int tlen, void *tag, int *taglen)
        return rc;
 }
 
-static unsigned long tom_hmac(void *key, int keylen,
-                       void *pt, int tlen, void *tag, int *taglen)
+static unsigned long tom_hmac(const void *key, const int keylen,
+                       const void *pt, const int tlen,
+                       void *tag, int *taglen)
 {
        int index, rc;
        unsigned long ltaglen = *taglen;
 
-       if (keylen != 20) return CRYPT_INVALID_KEYSIZE;
        if ((index = register_hash(&sha1_desc)) == -1)
                return CRYPT_INVALID_HASH;
        rc = hmac_memory(index, key, keylen, pt, tlen, tag, &ltaglen);
@@ -58,13 +91,13 @@ static unsigned long tom_hmac(void *key, int keylen,
        return rc;
 }
 
-static const char *tom_errstr(unsigned long err)
+static const char *tom_errstr(const unsigned long err)
 {
        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,