Botan
1.11.15
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#include <md4.h>
Public Types | |
typedef SCAN_Name | Spec |
Public Member Functions | |
void | clear () |
HashFunction * | clone () const |
void | final (byte out[]) |
secure_vector< byte > | final () |
template<typename Alloc > | |
void | final (std::vector< byte, Alloc > &out) |
size_t | hash_block_size () const |
MD4 () | |
std::string | name () const |
size_t | output_length () const |
secure_vector< byte > | process (const byte in[], size_t length) |
secure_vector< byte > | process (const secure_vector< byte > &in) |
secure_vector< byte > | process (const std::vector< byte > &in) |
secure_vector< byte > | process (const std::string &in) |
void | update (const byte in[], size_t length) |
void | update (const secure_vector< byte > &in) |
void | update (const std::vector< byte > &in) |
void | update (const std::string &str) |
void | update (byte in) |
template<typename T > | |
void | update_be (const T in) |
Protected Member Functions | |
void | add_data (const byte input[], size_t length) |
void | compress_n (const byte input[], size_t blocks) |
void | copy_out (byte[]) |
void | final_result (byte output[]) |
virtual void | write_count (byte out[]) |
Protected Attributes | |
secure_vector< u32bit > | digest |
secure_vector< u32bit > | M |
typedef SCAN_Name Botan::HashFunction::Spec [inherited] |
Botan::MD4::MD4 | ( | ) | [inline] |
void Botan::MDx_HashFunction::add_data | ( | const byte | input[], |
size_t | length | ||
) | [protected, virtual, inherited] |
Add more data to the computation
input | is an input buffer |
length | is the length of input in bytes |
Implements Botan::Buffered_Computation.
Definition at line 41 of file mdx_hash.cpp.
References Botan::buffer_insert(), and Botan::MDx_HashFunction::compress_n().
{ count += length; if(position) { buffer_insert(buffer, position, input, length); if(position + length >= buffer.size()) { compress_n(&buffer[0], 1); input += (buffer.size() - position); length -= (buffer.size() - position); position = 0; } } const size_t full_blocks = length / buffer.size(); const size_t remaining = length % buffer.size(); if(full_blocks) compress_n(input, full_blocks); buffer_insert(buffer, position, input + full_blocks * buffer.size(), remaining); position += remaining; }
void Botan::MD4::clear | ( | ) | [virtual] |
Reimplemented from Botan::MDx_HashFunction.
Definition at line 104 of file md4.cpp.
References digest, and Botan::zeroise().
HashFunction* Botan::MD4::clone | ( | ) | const [inline, virtual] |
Implements Botan::HashFunction.
Reimplemented in Botan::MD4_X86_32.
Definition at line 23 of file md4.h.
{ return new MD4; }
void Botan::MD4::compress_n | ( | const byte | blocks[], |
size_t | block_n | ||
) | [protected, virtual] |
Run the hash's compression function over a set of blocks
blocks | the input |
block_n | the number of blocks |
Implements Botan::MDx_HashFunction.
Definition at line 49 of file md4.cpp.
References digest, Botan::MDx_HashFunction::hash_block_size(), and Botan::load_le().
{ u32bit A = digest[0], B = digest[1], C = digest[2], D = digest[3]; for(size_t i = 0; i != blocks; ++i) { load_le(&M[0], input, M.size()); FF(A,B,C,D,M[ 0], 3); FF(D,A,B,C,M[ 1], 7); FF(C,D,A,B,M[ 2],11); FF(B,C,D,A,M[ 3],19); FF(A,B,C,D,M[ 4], 3); FF(D,A,B,C,M[ 5], 7); FF(C,D,A,B,M[ 6],11); FF(B,C,D,A,M[ 7],19); FF(A,B,C,D,M[ 8], 3); FF(D,A,B,C,M[ 9], 7); FF(C,D,A,B,M[10],11); FF(B,C,D,A,M[11],19); FF(A,B,C,D,M[12], 3); FF(D,A,B,C,M[13], 7); FF(C,D,A,B,M[14],11); FF(B,C,D,A,M[15],19); GG(A,B,C,D,M[ 0], 3); GG(D,A,B,C,M[ 4], 5); GG(C,D,A,B,M[ 8], 9); GG(B,C,D,A,M[12],13); GG(A,B,C,D,M[ 1], 3); GG(D,A,B,C,M[ 5], 5); GG(C,D,A,B,M[ 9], 9); GG(B,C,D,A,M[13],13); GG(A,B,C,D,M[ 2], 3); GG(D,A,B,C,M[ 6], 5); GG(C,D,A,B,M[10], 9); GG(B,C,D,A,M[14],13); GG(A,B,C,D,M[ 3], 3); GG(D,A,B,C,M[ 7], 5); GG(C,D,A,B,M[11], 9); GG(B,C,D,A,M[15],13); HH(A,B,C,D,M[ 0], 3); HH(D,A,B,C,M[ 8], 9); HH(C,D,A,B,M[ 4],11); HH(B,C,D,A,M[12],15); HH(A,B,C,D,M[ 2], 3); HH(D,A,B,C,M[10], 9); HH(C,D,A,B,M[ 6],11); HH(B,C,D,A,M[14],15); HH(A,B,C,D,M[ 1], 3); HH(D,A,B,C,M[ 9], 9); HH(C,D,A,B,M[ 5],11); HH(B,C,D,A,M[13],15); HH(A,B,C,D,M[ 3], 3); HH(D,A,B,C,M[11], 9); HH(C,D,A,B,M[ 7],11); HH(B,C,D,A,M[15],15); A = (digest[0] += A); B = (digest[1] += B); C = (digest[2] += C); D = (digest[3] += D); input += hash_block_size(); } }
void Botan::MD4::copy_out | ( | byte | buffer[] | ) | [protected, virtual] |
Copy the output to the buffer
buffer | to put the output into |
Implements Botan::MDx_HashFunction.
Definition at line 96 of file md4.cpp.
References Botan::copy_out_vec_le(), digest, and output_length().
{ copy_out_vec_le(output, output_length(), digest); }
void Botan::Buffered_Computation::final | ( | byte | out[] | ) | [inline, inherited] |
Complete the computation and retrieve the final result.
out | The byte array to be filled with the result. Must be of length output_length() |
Definition at line 90 of file buf_comp.h.
Referenced by botan_hash_final(), botan_mac_final(), Botan::McEliece_KEM_Decryptor::decrypt(), Botan::TLS::Session::decrypt(), Botan::McEliece_KEM_Encryptor::encrypt(), Botan::TLS::Session::encrypt(), Botan::mgf1_mask(), Botan::pbkdf2(), and Botan::TLS::write_record().
{ final_result(out); }
secure_vector<byte> Botan::Buffered_Computation::final | ( | ) | [inline, inherited] |
Complete the computation and retrieve the final result.
Definition at line 97 of file buf_comp.h.
{ secure_vector<byte> output(output_length()); final_result(&output[0]); return output; }
void Botan::Buffered_Computation::final | ( | std::vector< byte, Alloc > & | out | ) | [inline, inherited] |
Definition at line 105 of file buf_comp.h.
{ out.resize(output_length()); final_result(&out[0]); }
void Botan::MDx_HashFunction::final_result | ( | byte | out[] | ) | [protected, virtual, inherited] |
Write the final output to out
out | is an output buffer of output_length() |
Implements Botan::Buffered_Computation.
Definition at line 71 of file mdx_hash.cpp.
References Botan::MDx_HashFunction::clear(), Botan::MDx_HashFunction::compress_n(), Botan::MDx_HashFunction::copy_out(), Botan::MDx_HashFunction::write_count(), and Botan::zeroise().
{ buffer[position] = (BIG_BIT_ENDIAN ? 0x80 : 0x01); for(size_t i = position+1; i != buffer.size(); ++i) buffer[i] = 0; if(position >= buffer.size() - COUNT_SIZE) { compress_n(&buffer[0], 1); zeroise(buffer); } write_count(&buffer[buffer.size() - COUNT_SIZE]); compress_n(&buffer[0], 1); copy_out(output); clear(); }
size_t Botan::MDx_HashFunction::hash_block_size | ( | ) | const [inline, virtual, inherited] |
Reimplemented from Botan::HashFunction.
Definition at line 32 of file mdx_hash.h.
Referenced by compress_n(), Botan::MD5::compress_n(), Botan::SHA_160::compress_n(), and Botan::MDx_HashFunction::write_count().
{ return buffer.size(); }
std::string Botan::MD4::name | ( | ) | const [inline, virtual] |
size_t Botan::MD4::output_length | ( | ) | const [inline, virtual] |
Implements Botan::Buffered_Computation.
Definition at line 22 of file md4.h.
Referenced by copy_out().
{ return 16; }
secure_vector<byte> Botan::Buffered_Computation::process | ( | const byte | in[], |
size_t | length | ||
) | [inline, inherited] |
Update and finalize computation. Does the same as calling update() and final() consecutively.
in | the input to process as a byte array |
length | the length of the byte array |
Definition at line 118 of file buf_comp.h.
Referenced by Botan::HMAC_RNG::HMAC_RNG(), Botan::RTSS_Share::split(), and Botan::Cert_Extension::Subject_Key_ID::Subject_Key_ID().
{ add_data(in, length); return final(); }
secure_vector<byte> Botan::Buffered_Computation::process | ( | const secure_vector< byte > & | in | ) | [inline, inherited] |
Update and finalize computation. Does the same as calling update() and final() consecutively.
in | the input to process |
Definition at line 130 of file buf_comp.h.
{ add_data(&in[0], in.size()); return final(); }
secure_vector<byte> Botan::Buffered_Computation::process | ( | const std::vector< byte > & | in | ) | [inline, inherited] |
Update and finalize computation. Does the same as calling update() and final() consecutively.
in | the input to process |
Definition at line 142 of file buf_comp.h.
{ add_data(&in[0], in.size()); return final(); }
secure_vector<byte> Botan::Buffered_Computation::process | ( | const std::string & | in | ) | [inline, inherited] |
void Botan::Buffered_Computation::update | ( | const byte | in[], |
size_t | length | ||
) | [inline, inherited] |
Add new input to process.
in | the input to process as a byte array |
length | of param in in bytes |
Definition at line 34 of file buf_comp.h.
Referenced by botan_hash_update(), botan_mac_update(), Botan::McEliece_KEM_Decryptor::decrypt(), Botan::TLS::Session::decrypt(), Botan::McEliece_KEM_Encryptor::encrypt(), Botan::TLS::Session::encrypt(), Botan::mgf1_mask(), Botan::pbkdf2(), and Botan::TLS::write_record().
{ add_data(in, length); }
void Botan::Buffered_Computation::update | ( | const secure_vector< byte > & | in | ) | [inline, inherited] |
Add new input to process.
in | the input to process as a secure_vector |
Definition at line 40 of file buf_comp.h.
{ add_data(&in[0], in.size()); }
void Botan::Buffered_Computation::update | ( | const std::vector< byte > & | in | ) | [inline, inherited] |
Add new input to process.
in | the input to process as a std::vector |
Definition at line 49 of file buf_comp.h.
{ add_data(&in[0], in.size()); }
void Botan::Buffered_Computation::update | ( | const std::string & | str | ) | [inline, inherited] |
Add new input to process.
str | the input to process as a std::string. Will be interpreted as a byte array based on the strings encoding. |
Definition at line 73 of file buf_comp.h.
{ add_data(reinterpret_cast<const byte*>(str.data()), str.size()); }
void Botan::Buffered_Computation::update | ( | byte | in | ) | [inline, inherited] |
Process a single byte.
in | the byte to process |
Definition at line 82 of file buf_comp.h.
{ add_data(&in, 1); }
void Botan::Buffered_Computation::update_be | ( | const T | in | ) | [inline, inherited] |
Add an integer in big-endian order
in | the value |
Definition at line 58 of file buf_comp.h.
References Botan::get_byte().
Referenced by Botan::mgf1_mask(), and Botan::pbkdf2().
void Botan::MDx_HashFunction::write_count | ( | byte | out[] | ) | [protected, virtual, inherited] |
Write the count, if used, to this spot
out | where to write the counter to |
Definition at line 93 of file mdx_hash.cpp.
References Botan::MDx_HashFunction::hash_block_size(), Botan::Buffered_Computation::output_length(), Botan::store_be(), and Botan::store_le().
Referenced by Botan::MDx_HashFunction::final_result().
{ if(COUNT_SIZE < 8) throw Invalid_State("MDx_HashFunction::write_count: COUNT_SIZE < 8"); if(COUNT_SIZE >= output_length() || COUNT_SIZE >= hash_block_size()) throw Invalid_Argument("MDx_HashFunction: COUNT_SIZE is too big"); const u64bit bit_count = count * 8; if(BIG_BYTE_ENDIAN) store_be(bit_count, out + COUNT_SIZE - 8); else store_le(bit_count, out + COUNT_SIZE - 8); }
secure_vector<u32bit> Botan::MD4::digest [protected] |
The digest value, exposed for use by subclasses (x86 asm)
Definition at line 41 of file md4.h.
Referenced by clear(), compress_n(), and copy_out().
secure_vector<u32bit> Botan::MD4::M [protected] |