diff options
author | lloyd <[email protected]> | 2015-02-05 07:44:25 +0000 |
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committer | lloyd <[email protected]> | 2015-02-05 07:44:25 +0000 |
commit | cb0f83ae63c4555cbdd0607e3a5f6e9260c0d19c (patch) | |
tree | 4981027a25fa8074177b97c3a3ca7431f3337deb /src/lib/constructs/rfc3394 | |
parent | 2c14faf0aa1cfe0f8d70af1938dcad5b4d6d3b59 (diff) |
Clean up root dir, remove some unneeded dependencies
Diffstat (limited to 'src/lib/constructs/rfc3394')
-rw-r--r-- | src/lib/constructs/rfc3394/info.txt | 5 | ||||
-rw-r--r-- | src/lib/constructs/rfc3394/rfc3394.cpp | 119 | ||||
-rw-r--r-- | src/lib/constructs/rfc3394/rfc3394.h | 40 |
3 files changed, 0 insertions, 164 deletions
diff --git a/src/lib/constructs/rfc3394/info.txt b/src/lib/constructs/rfc3394/info.txt deleted file mode 100644 index 8cd5989ca..000000000 --- a/src/lib/constructs/rfc3394/info.txt +++ /dev/null @@ -1,5 +0,0 @@ -define RFC3394_KEYWRAP 20131128 - -<requires> -aes -</requires> diff --git a/src/lib/constructs/rfc3394/rfc3394.cpp b/src/lib/constructs/rfc3394/rfc3394.cpp deleted file mode 100644 index 422f2a2dd..000000000 --- a/src/lib/constructs/rfc3394/rfc3394.cpp +++ /dev/null @@ -1,119 +0,0 @@ -/* -* AES Key Wrap (RFC 3394) -* (C) 2011 Jack Lloyd -* -* Botan is released under the Simplified BSD License (see license.txt) -*/ - -#include <botan/rfc3394.h> -#include <botan/internal/algo_registry.h> -#include <botan/block_cipher.h> -#include <botan/loadstor.h> -#include <botan/exceptn.h> -#include <botan/internal/xor_buf.h> - -namespace Botan { - -namespace { - -BlockCipher* make_aes(size_t keylength) - { - auto& block_ciphers = Algo_Registry<BlockCipher>::global_registry(); - if(keylength == 16) - return block_ciphers.make("AES-128"); - else if(keylength == 24) - return block_ciphers.make("AES-192"); - else if(keylength == 32) - return block_ciphers.make("AES-256"); - else - throw std::invalid_argument("Bad KEK length for NIST keywrap"); - } - -} - -secure_vector<byte> rfc3394_keywrap(const secure_vector<byte>& key, - const SymmetricKey& kek) - { - if(key.size() % 8 != 0) - throw std::invalid_argument("Bad input key size for NIST key wrap"); - - std::unique_ptr<BlockCipher> aes(make_aes(kek.length())); - aes->set_key(kek); - - const size_t n = key.size() / 8; - - secure_vector<byte> R((n + 1) * 8); - secure_vector<byte> A(16); - - for(size_t i = 0; i != 8; ++i) - A[i] = 0xA6; - - copy_mem(&R[8], &key[0], key.size()); - - for(size_t j = 0; j <= 5; ++j) - { - for(size_t i = 1; i <= n; ++i) - { - const u32bit t = (n * j) + i; - - copy_mem(&A[8], &R[8*i], 8); - - aes->encrypt(&A[0]); - copy_mem(&R[8*i], &A[8], 8); - - byte t_buf[4] = { 0 }; - store_be(t, t_buf); - xor_buf(&A[4], &t_buf[0], 4); - } - } - - copy_mem(&R[0], &A[0], 8); - - return R; - } - -secure_vector<byte> rfc3394_keyunwrap(const secure_vector<byte>& key, - const SymmetricKey& kek) - { - if(key.size() < 16 || key.size() % 8 != 0) - throw std::invalid_argument("Bad input key size for NIST key unwrap"); - - std::unique_ptr<BlockCipher> aes(make_aes(kek.length())); - aes->set_key(kek); - - const size_t n = (key.size() - 8) / 8; - - secure_vector<byte> R(n * 8); - secure_vector<byte> A(16); - - for(size_t i = 0; i != 8; ++i) - A[i] = key[i]; - - copy_mem(&R[0], &key[8], key.size() - 8); - - for(size_t j = 0; j <= 5; ++j) - { - for(size_t i = n; i != 0; --i) - { - const u32bit t = (5 - j) * n + i; - - byte t_buf[4] = { 0 }; - store_be(t, t_buf); - - xor_buf(&A[4], &t_buf[0], 4); - - copy_mem(&A[8], &R[8*(i-1)], 8); - - aes->decrypt(&A[0]); - - copy_mem(&R[8*(i-1)], &A[8], 8); - } - } - - if(load_be<u64bit>(&A[0], 0) != 0xA6A6A6A6A6A6A6A6) - throw Integrity_Failure("NIST key unwrap failed"); - - return R; - } - -} diff --git a/src/lib/constructs/rfc3394/rfc3394.h b/src/lib/constructs/rfc3394/rfc3394.h deleted file mode 100644 index fab6bc3cb..000000000 --- a/src/lib/constructs/rfc3394/rfc3394.h +++ /dev/null @@ -1,40 +0,0 @@ -/* -* AES Key Wrap (RFC 3394) -* (C) 2011 Jack Lloyd -* -* Botan is released under the Simplified BSD License (see license.txt) -*/ - -#ifndef BOTAN_AES_KEY_WRAP_H__ -#define BOTAN_AES_KEY_WRAP_H__ - -#include <botan/symkey.h> - -namespace Botan { - -/** -* Encrypt a key under a key encryption key using the algorithm -* described in RFC 3394 -* -* @param key the plaintext key to encrypt -* @param kek the key encryption key -* @return key encrypted under kek -*/ -secure_vector<byte> BOTAN_DLL rfc3394_keywrap(const secure_vector<byte>& key, - const SymmetricKey& kek); - -/** -* Decrypt a key under a key encryption key using the algorithm -* described in RFC 3394 -* -* @param key the encrypted key to decrypt -* @param kek the key encryption key -* @param af an algorithm factory -* @return key decrypted under kek -*/ -secure_vector<byte> BOTAN_DLL rfc3394_keyunwrap(const secure_vector<byte>& key, - const SymmetricKey& kek); - -} - -#endif |