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authorlloyd <[email protected]>2008-09-28 19:29:24 +0000
committerlloyd <[email protected]>2008-09-28 19:29:24 +0000
commit9bcfe627321ddc81691b835dffaa6324ac4684a4 (patch)
treefe5e8ae9813b853549558b59833022e87e83981b /src/kdf/pbkdf1/pbkdf1.cpp
parent9822a701516396b7de4e41339faecd48ff8dc8ff (diff)
Move all modules into src/ directory
Diffstat (limited to 'src/kdf/pbkdf1/pbkdf1.cpp')
-rw-r--r--src/kdf/pbkdf1/pbkdf1.cpp57
1 files changed, 57 insertions, 0 deletions
diff --git a/src/kdf/pbkdf1/pbkdf1.cpp b/src/kdf/pbkdf1/pbkdf1.cpp
new file mode 100644
index 000000000..70cff9eee
--- /dev/null
+++ b/src/kdf/pbkdf1/pbkdf1.cpp
@@ -0,0 +1,57 @@
+/*************************************************
+* PBKDF1 Source File *
+* (C) 1999-2007 Jack Lloyd *
+*************************************************/
+
+#include <botan/pbkdf1.h>
+#include <botan/lookup.h>
+#include <memory>
+
+namespace Botan {
+
+/*************************************************
+* Return a PKCS#5 PBKDF1 derived key *
+*************************************************/
+OctetString PKCS5_PBKDF1::derive(u32bit key_len,
+ const std::string& passphrase,
+ const byte salt[], u32bit salt_size,
+ u32bit iterations) const
+ {
+ if(iterations == 0)
+ throw Invalid_Argument("PKCS#5 PBKDF1: Invalid iteration count");
+
+ std::auto_ptr<HashFunction> hash(get_hash(hash_name));
+ if(key_len > hash->OUTPUT_LENGTH)
+ throw Exception("PKCS#5 PBKDF1: Requested output length too long");
+
+ hash->update(passphrase);
+ hash->update(salt, salt_size);
+ SecureVector<byte> key = hash->final();
+
+ for(u32bit j = 1; j != iterations; ++j)
+ {
+ hash->update(key);
+ hash->final(key);
+ }
+
+ return OctetString(key, std::min(key_len, key.size()));
+ }
+
+/*************************************************
+* Return the name of this type *
+*************************************************/
+std::string PKCS5_PBKDF1::name() const
+ {
+ return "PBKDF1(" + hash_name + ")";
+ }
+
+/*************************************************
+* PKCS5_PBKDF1 Constructor *
+*************************************************/
+PKCS5_PBKDF1::PKCS5_PBKDF1(const std::string& h_name) : hash_name(h_name)
+ {
+ if(!have_hash(hash_name))
+ throw Algorithm_Not_Found(hash_name);
+ }
+
+}