diff options
Diffstat (limited to 'botan/src/kdf/ssl_prf/prf_ssl3.cpp')
| -rw-r--r-- | botan/src/kdf/ssl_prf/prf_ssl3.cpp | 76 |
1 files changed, 0 insertions, 76 deletions
diff --git a/botan/src/kdf/ssl_prf/prf_ssl3.cpp b/botan/src/kdf/ssl_prf/prf_ssl3.cpp deleted file mode 100644 index 2b67644..0000000 --- a/botan/src/kdf/ssl_prf/prf_ssl3.cpp +++ /dev/null @@ -1,76 +0,0 @@ -/* -* SSLv3 PRF -* (C) 2004-2006 Jack Lloyd -* -* Distributed under the terms of the Botan license -*/ - -#include <botan/prf_ssl3.h> -#include <botan/symkey.h> -#include <botan/exceptn.h> -#include <botan/sha160.h> -#include <botan/md5.h> -#include <memory> - -namespace Botan { - -namespace { - -/* -* Return the next inner hash -*/ -OctetString next_hash(u32bit where, u32bit want, - HashFunction& md5, HashFunction& sha1, - const byte secret[], u32bit secret_len, - const byte seed[], u32bit seed_len) - { - if(want > md5.OUTPUT_LENGTH) - throw Internal_Error("SSL3_PRF:next_hash: want is too big"); - - const byte ASCII_A_CHAR = 0x41; - - for(u32bit j = 0; j != where + 1; j++) - sha1.update(ASCII_A_CHAR + where); - sha1.update(secret, secret_len); - sha1.update(seed, seed_len); - SecureVector<byte> sha1_hash = sha1.final(); - - md5.update(secret, secret_len); - md5.update(sha1_hash); - SecureVector<byte> md5_hash = md5.final(); - - return OctetString(md5_hash, want); - } - -} - -/* -* SSL3 PRF -*/ -SecureVector<byte> SSL3_PRF::derive(u32bit key_len, - const byte secret[], u32bit secret_len, - const byte seed[], u32bit seed_len) const - { - if(key_len > 416) - throw Internal_Error("SSL3_PRF: Requested key length is too large"); - - MD5 md5; - SHA_160 sha1; - - OctetString output; - - int counter = 0; - while(key_len) - { - const u32bit produce = std::min(key_len, md5.OUTPUT_LENGTH); - - output = output + next_hash(counter++, produce, md5, sha1, - secret, secret_len, seed, seed_len); - - key_len -= produce; - } - - return output.bits_of(); - } - -} |
