X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=libtomcrypt%2Fsrc%2Fmodes%2Flrw%2Flrw_getiv.c;fp=libtomcrypt%2Fsrc%2Fmodes%2Flrw%2Flrw_getiv.c;h=6dcd96d2090624da47ecaf41c9fe7a4502c71d13;hb=66bc25938679f1d6a1d1200f329093d82a5e99b4;hp=0000000000000000000000000000000000000000;hpb=a52ee0733f420ca20224049260d6fc5cf7d8f621;p=zpackage

diff --git a/libtomcrypt/src/modes/lrw/lrw_getiv.c b/libtomcrypt/src/modes/lrw/lrw_getiv.c
new file mode 100644
index 0000000..6dcd96d
--- /dev/null
+++ b/libtomcrypt/src/modes/lrw/lrw_getiv.c
@@ -0,0 +1,43 @@
+/* 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.
+ */
+#include "tomcrypt.h"
+
+/**
+   @file lrw_getiv.c
+   LRW_MODE implementation, Retrieve the current IV, Tom St Denis
+*/
+
+#ifdef LTC_LRW_MODE
+
+/**
+  Get the IV for LRW
+  @param IV      [out] The IV, must be 16 octets
+  @param len     Length ... must be at least 16 :-)
+  @param lrw     The LRW state to read
+  @return CRYPT_OK if successful
+*/
+int lrw_getiv(unsigned char *IV, unsigned long *len, symmetric_LRW *lrw)
+{
+   LTC_ARGCHK(IV != NULL);
+   LTC_ARGCHK(len != NULL);
+   LTC_ARGCHK(lrw != NULL);
+   if (*len < 16) {
+       *len = 16;
+       return CRYPT_BUFFER_OVERFLOW;
+   }
+
+   XMEMCPY(IV, lrw->IV, 16);
+   *len = 16;
+   return CRYPT_OK;
+}
+
+#endif
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */