diff options
Diffstat (limited to 'src/block/lion')
| -rw-r--r-- | src/block/lion/lion.cpp | 56 | ||||
| -rw-r--r-- | src/block/lion/lion.h | 4 |
2 files changed, 36 insertions, 24 deletions
diff --git a/src/block/lion/lion.cpp b/src/block/lion/lion.cpp index c7cdf6d13..bfff64b67 100644 --- a/src/block/lion/lion.cpp +++ b/src/block/lion/lion.cpp @@ -14,41 +14,53 @@ namespace Botan { /* * Lion Encryption */ -void Lion::enc(const byte in[], byte out[]) const +void Lion::encrypt_n(const byte in[], byte out[], u32bit blocks) const { - SecureVector<byte> buffer(LEFT_SIZE); + for(u32bit i = 0; i != blocks; ++i) + { + SecureVector<byte> buffer(LEFT_SIZE); - xor_buf(buffer, in, key1, LEFT_SIZE); - cipher->set_key(buffer, LEFT_SIZE); - cipher->encrypt(in + LEFT_SIZE, out + LEFT_SIZE, RIGHT_SIZE); + xor_buf(buffer, in, key1, LEFT_SIZE); + cipher->set_key(buffer, LEFT_SIZE); + cipher->encrypt(in + LEFT_SIZE, out + LEFT_SIZE, RIGHT_SIZE); - hash->update(out + LEFT_SIZE, RIGHT_SIZE); - hash->final(buffer); - xor_buf(out, in, buffer, LEFT_SIZE); + hash->update(out + LEFT_SIZE, RIGHT_SIZE); + hash->final(buffer); + xor_buf(out, in, buffer, LEFT_SIZE); - xor_buf(buffer, out, key2, LEFT_SIZE); - cipher->set_key(buffer, LEFT_SIZE); - cipher->encrypt(out + LEFT_SIZE, RIGHT_SIZE); + xor_buf(buffer, out, key2, LEFT_SIZE); + cipher->set_key(buffer, LEFT_SIZE); + cipher->encrypt(out + LEFT_SIZE, RIGHT_SIZE); + + in += BLOCK_SIZE; + out += BLOCK_SIZE; + } } /* * Lion Decryption */ -void Lion::dec(const byte in[], byte out[]) const +void Lion::decrypt_n(const byte in[], byte out[], u32bit blocks) const { - SecureVector<byte> buffer(LEFT_SIZE); + for(u32bit i = 0; i != blocks; ++i) + { + SecureVector<byte> buffer(LEFT_SIZE); + + xor_buf(buffer, in, key2, LEFT_SIZE); + cipher->set_key(buffer, LEFT_SIZE); + cipher->encrypt(in + LEFT_SIZE, out + LEFT_SIZE, RIGHT_SIZE); - xor_buf(buffer, in, key2, LEFT_SIZE); - cipher->set_key(buffer, LEFT_SIZE); - cipher->encrypt(in + LEFT_SIZE, out + LEFT_SIZE, RIGHT_SIZE); + hash->update(out + LEFT_SIZE, RIGHT_SIZE); + hash->final(buffer); + xor_buf(out, in, buffer, LEFT_SIZE); - hash->update(out + LEFT_SIZE, RIGHT_SIZE); - hash->final(buffer); - xor_buf(out, in, buffer, LEFT_SIZE); + xor_buf(buffer, out, key1, LEFT_SIZE); + cipher->set_key(buffer, LEFT_SIZE); + cipher->encrypt(out + LEFT_SIZE, RIGHT_SIZE); - xor_buf(buffer, out, key1, LEFT_SIZE); - cipher->set_key(buffer, LEFT_SIZE); - cipher->encrypt(out + LEFT_SIZE, RIGHT_SIZE); + in += BLOCK_SIZE; + out += BLOCK_SIZE; + } } /* diff --git a/src/block/lion/lion.h b/src/block/lion/lion.h index 5bc4e72c0..d9f933846 100644 --- a/src/block/lion/lion.h +++ b/src/block/lion/lion.h @@ -27,8 +27,8 @@ class BOTAN_DLL Lion : public BlockCipher Lion(HashFunction*, StreamCipher*, u32bit); ~Lion() { delete hash; delete cipher; } private: - void enc(const byte[], byte[]) const; - void dec(const byte[], byte[]) const; + void encrypt_n(const byte in[], byte out[], u32bit blocks) const; + void decrypt_n(const byte in[], byte out[], u32bit blocks) const; void key_schedule(const byte[], u32bit); const u32bit LEFT_SIZE, RIGHT_SIZE; |