From: leslie <unknown>
Date: Mon, 21 Dec 2009 13:49:54 +0000 (+0100)
Subject: extend IDEA crypto API
X-Git-Tag: upstream/620~127
X-Git-Url: http://www.vanbest.org/gitweb/?a=commitdiff_plain;h=4fa50a0c49ff5248de303ee83f09388920dcfa30;p=sasc-ng.git

extend IDEA crypto API
---

diff --git a/crypto.c b/crypto.c
index a19ce8b..b5d9248 100644
--- a/crypto.c
+++ b/crypto.c
@@ -102,6 +102,15 @@ void cIDEA::Decrypt(unsigned char *data, int len, const unsigned char *key, unsi
   idea_cbc_encrypt(data,data,len&~7,&ks,iv,IDEA_DECRYPT);
 }
 
+void cIDEA::Decrypt(const unsigned char *data, int len, unsigned char *decrypt, const unsigned char *key, unsigned char *iv) const
+{
+  unsigned char v[8];
+  if(!iv) { memset(v,0,sizeof(v)); iv=v; }
+  IDEA_KEY_SCHEDULE ks;
+  idea_set_encrypt_key(key,&ks);
+  idea_cbc_encrypt(data,decrypt,len&~7,&ks,iv,IDEA_DECRYPT);
+}
+
 int cIDEA::Encrypt(const unsigned char *data, int len, unsigned char *crypt, const unsigned char *key, unsigned char *iv) const
 {
   unsigned char v[8];
diff --git a/crypto.h b/crypto.h
index 8e056af..1f618a6 100644
--- a/crypto.h
+++ b/crypto.h
@@ -113,6 +113,7 @@ class cIDEA {
 public:
   // single shot API
   void Decrypt(unsigned char *data, int len, const unsigned char *key, unsigned char *iv) const;
+  void Decrypt(const unsigned char *data, int len, unsigned char *decrypt, const unsigned char *key, unsigned char *iv) const;
   int Encrypt(const unsigned char *data, int len, unsigned char *crypt, const unsigned char *key, unsigned char *iv) const;
   // multi shot API
   void SetEncKey(const unsigned char *key, IdeaKS *ks) const;