diff options
author | lloyd <[email protected]> | 2014-01-18 22:07:57 +0000 |
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committer | lloyd <[email protected]> | 2014-01-18 22:07:57 +0000 |
commit | 97da227cbde0257f14b7cde001680bc69cf941c9 (patch) | |
tree | afe16b54a0192835f3d6284516df1747fbd10954 /src/lib/pk_pad/emsa2/emsa2.cpp | |
parent | b3bffeff3553f4b609afe634c8c8b56ca0a2384c (diff) |
Rename the various pubkey padding schemes to match the common names.
Way back when, following IEEE 1363 naming seemed like a good idea. But not so much.
Diffstat (limited to 'src/lib/pk_pad/emsa2/emsa2.cpp')
-rw-r--r-- | src/lib/pk_pad/emsa2/emsa2.cpp | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/src/lib/pk_pad/emsa2/emsa2.cpp b/src/lib/pk_pad/emsa2/emsa2.cpp deleted file mode 100644 index 02a3dbe72..000000000 --- a/src/lib/pk_pad/emsa2/emsa2.cpp +++ /dev/null @@ -1,112 +0,0 @@ -/* -* EMSA2 -* (C) 1999-2007 Jack Lloyd -* -* Distributed under the terms of the Botan license -*/ - -#include <botan/emsa2.h> -#include <botan/hash_id.h> - -namespace Botan { - -namespace { - -/* -* EMSA2 Encode Operation -*/ -secure_vector<byte> emsa2_encoding(const secure_vector<byte>& msg, - size_t output_bits, - const secure_vector<byte>& empty_hash, - byte hash_id) - { - const size_t HASH_SIZE = empty_hash.size(); - - size_t output_length = (output_bits + 1) / 8; - - if(msg.size() != HASH_SIZE) - throw Encoding_Error("EMSA2::encoding_of: Bad input length"); - if(output_length < HASH_SIZE + 4) - throw Encoding_Error("EMSA2::encoding_of: Output length is too small"); - - bool empty = true; - for(size_t j = 0; j != HASH_SIZE; ++j) - if(empty_hash[j] != msg[j]) - empty = false; - - secure_vector<byte> output(output_length); - - output[0] = (empty ? 0x4B : 0x6B); - output[output_length - 3 - HASH_SIZE] = 0xBA; - set_mem(&output[1], output_length - 4 - HASH_SIZE, 0xBB); - buffer_insert(output, output_length - (HASH_SIZE + 2), &msg[0], msg.size()); - output[output_length-2] = hash_id; - output[output_length-1] = 0xCC; - - return output; - } - -} - -/* -* EMSA2 Update Operation -*/ -void EMSA2::update(const byte input[], size_t length) - { - hash->update(input, length); - } - -/* -* Return the raw (unencoded) data -*/ -secure_vector<byte> EMSA2::raw_data() - { - return hash->final(); - } - -/* -* EMSA2 Encode Operation -*/ -secure_vector<byte> EMSA2::encoding_of(const secure_vector<byte>& msg, - size_t output_bits, - RandomNumberGenerator&) - { - return emsa2_encoding(msg, output_bits, empty_hash, hash_id); - } - -/* -* EMSA2 Verify Operation -*/ -bool EMSA2::verify(const secure_vector<byte>& coded, - const secure_vector<byte>& raw, - size_t key_bits) - { - try - { - return (coded == emsa2_encoding(raw, key_bits, - empty_hash, hash_id)); - } - catch(...) - { - return false; - } - } - -/* -* EMSA2 Constructor -*/ -EMSA2::EMSA2(HashFunction* hash_in) : hash(hash_in) - { - empty_hash = hash->final(); - - const std::string hash_name = hash->name(); - hash_id = ieee1363_hash_id(hash_name); - - if(hash_id == 0) - { - delete hash; - throw Encoding_Error("EMSA2 no hash identifier for " + hash_name); - } - } - -} |