Follow new API of PolarSSL

ChangeLog

@@ -1,7 +1,10 @@
 2013-03-19  Niibe Yutaka  <gniibe@fsij.org>
 
+	* src/random.c (random_gen): New (was: random_byte).
+
 	* src/call-rsa.c (rsa_sign): Follow change of API.
-	(modulus_calc, rsa_decrypt, rsa_verify): Likewise.
+	(rsa_genkey): Use random_gen.
+	(modulus_calc, rsa_decrypt, rsa_verify): Follow change of API.
 	* src/openpgp-do.c (encrypt, decrypt): Likewise.
 
 	* polarssl/include/polarssl/aes.h: Updated from PolarSSL 1.2.6.

src/bn.c

@@ -22,6 +22,7 @@
  */
 
 #include <stdint.h>
+#include <stdlib.h>
 #include "random.h"
 #include "bn.h"
 

src/call-rsa.c

@@ -1,7 +1,7 @@
 /*
  * call-rsa.c -- Glue code between RSA computation and OpenPGP card protocol
  *
- * Copyright (C) 2010, 2011, 2012 Free Software Initiative of Japan
+ * Copyright (C) 2010, 2011, 2012, 2013 Free Software Initiative of Japan
  * Author: NIIBE Yutaka <gniibe@fsij.org>
  *
  * This file is a part of Gnuk, a GnuPG USB Token implementation.
@@ -219,7 +219,7 @@ rsa_genkey (void)
     return NULL;
 
   rsa_init (&rsa_ctx, RSA_PKCS_V15, 0);
-  r = rsa_gen_key (&rsa_ctx, random_byte, &index,
+  r = rsa_gen_key (&rsa_ctx, random_gen, &index,
 		   KEY_CONTENT_LEN * 8, RSA_EXPONENT);
   if (r < 0)
     {

src/random.c

@@ -81,26 +81,35 @@ get_salt (void)
 /*
  * Random byte iterator
  */
-uint8_t
+int
-random_byte (void *arg)
+random_gen (void *arg, unsigned char *out, size_t out_len)
 {
   uint8_t *index_p = (uint8_t *)arg;
   uint8_t index = *index_p;
-  uint8_t *p = ((uint8_t *)random_word) + index;
+  size_t n;
-  uint8_t v;
 
+  while (out_len)
+    {
       neug_wait_full ();
 
-  v = *p;
+      n = RANDOM_BYTES_LENGTH - index;
+      if (n > out_len)
+	n = out_len;
 
-  if (++index >= RANDOM_BYTES_LENGTH)
+      memcpy (out, random_word + index, n);
+      out += n;
+      out_len -= n;
+      index += n;
+
+      if (index >= RANDOM_BYTES_LENGTH)
 	{
 	  index = 0;
 	  neug_flush ();
 	}
+    }
 
   *index_p = index;
 
-  return v;
+  return 0;
 }
 #endif

src/random.h

@@ -9,4 +9,4 @@ void random_bytes_free (const uint8_t *p);
 uint32_t get_salt (void);
 
 /* iterator returning a byta at a time */
-uint8_t random_byte (void *arg);
+int random_gen (void *arg, unsigned char *output, size_t output_len);