diff options
author | lloyd <[email protected]> | 2008-09-28 19:29:24 +0000 |
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committer | lloyd <[email protected]> | 2008-09-28 19:29:24 +0000 |
commit | 9bcfe627321ddc81691b835dffaa6324ac4684a4 (patch) | |
tree | fe5e8ae9813b853549558b59833022e87e83981b /src/kdf/pbkdf1/pbkdf1.cpp | |
parent | 9822a701516396b7de4e41339faecd48ff8dc8ff (diff) |
Move all modules into src/ directory
Diffstat (limited to 'src/kdf/pbkdf1/pbkdf1.cpp')
-rw-r--r-- | src/kdf/pbkdf1/pbkdf1.cpp | 57 |
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); + } + +} |