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;    libcrash -- cryptographic hash functions

;

;    Copyright (C) 2012-2014,2016 Ivan Baravy (dunkaist)

;

;    This program is free software: you can redistribute it and/or modify

;    it under the terms of the GNU General Public License as published by

;    the Free Software Foundation, either version 3 of the License, or

;    (at your option) any later version.

;

;    This program is distributed in the hope that it will be useful,

;    but WITHOUT ANY WARRANTY; without even the implied warranty of

;    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

;    GNU General Public License for more details.

;

;    You should have received a copy of the GNU General Public License

;    along with this program.  If not, see .

format MS COFF

public @EXPORT as 'EXPORTS'

include 'struct.inc'

include 'proc32.inc'

include 'macros.inc'

include 'config.inc'

include 'kglobals.inc'

purge section,mov,add,sub

section '.flat' code readable align 16

include 'libcrash.inc'

include 'crc32.asm'

include 'md4.asm'

include 'md5.asm'

include 'sha1.asm'

include 'sha224_256.asm'

include 'sha384_512.asm'

include 'sha3.asm'

proc lib_init

        ret

endp

proc crash.hash  _hid, _data, _callback, _ctx

locals

        size dd ?

endl

        mov     [size], 0

        mov     eax, [_hid]

        imul    eax, sizeof.crash_item

        lea     edx, [crash._.table + eax]

        mov     ebx, [_ctx]

        stdcall [edx + crash_item.init], [_ctx]

  .hash:

        mov     esi, [_data]

        push    edx

        stdcall [edx + crash_item.update], [_ctx], [_data], [size]

        mov     [size], 0

        pop     edx

        mov     eax, [_callback]

        test    eax, eax

        jz      .quit

        push    edx

        stdcall [_callback], [size]

        pop     edx

        mov     [size], eax

        test    eax, eax

        jnz     .hash

        stdcall [edx + crash_item.final], [_ctx]

  .quit:

        ret

endp

proc crash.bin2hex _bin, _hex, _hid

        mov     eax, [_hid]

        imul    eax, sizeof.crash_item

        mov     ecx, [crash._.table + eax + crash_item.len_out]

        mov     ebx, crash._.bin2hex_table

        mov     esi, [_bin]

        mov     edi, [_hex]

  .next_byte:

        xor     eax, eax

        lodsb

        shl     eax, 4

        shr     al, 4

        xlatb

        xchg    al, ah

        xlatb

        stosw

        dec     ecx

        jnz     .next_byte

        xor     al, al

        stosb

        ret

endp

section '.data' data readable align 16

crash._.bin2hex_table   db '0123456789abcdef'

crash._.table   dd \

        crc32.init,    crc32.update,      crc32.final,      crc32.oneshot,    CRC32_HASH_SIZE,  \

        md4.init,      md4.update,        md4.final,        md4.oneshot,      MD4_HASH_SIZE,    \

        md5.init,      md5.update,        md5.final,        md5.oneshot,      MD5_HASH_SIZE,    \

        sha1.init,     sha1.update,       sha1.final,       sha1.oneshot,     SHA1_HASH_SIZE,   \

        sha224.init,   sha224.update,     sha224.final,     sha224.oneshot,   SHA224_HASH_SIZE, \

        sha256.init,   sha256.update,     sha256.final,     sha256.oneshot,   SHA256_HASH_SIZE, \

        sha384.init,   sha384.update,     sha384.final,     sha384.oneshot,   SHA384_HASH_SIZE, \

        sha512.init,   sha512.update,     sha512.final,     sha512.oneshot,   SHA512_HASH_SIZE, \

        sha3_224.init, sha3_224.update,   sha3_224.final,   sha3_224.oneshot, SHA3_224_HASH_SIZE,\

        sha3_256.init, sha3_256.update,   sha3_256.final,   sha3_256.oneshot, SHA3_256_HASH_SIZE,\

        sha3_384.init, sha3_384.update,   sha3_384.final,   sha3_384.oneshot, SHA3_384_HASH_SIZE,\

        sha3_512.init, sha3_512.update,   sha3_512.final,   sha3_512.oneshot, SHA3_512_HASH_SIZE

IncludeIGlobals

align 4

@EXPORT:

export                                          \

    lib_init,             'lib_init'            , \

    crash.hash,           'crash_hash'          , \

    crash.bin2hex,        'crash_bin2hex'       , \

    crc32.init,           'crc32_init'          , \

    crc32.update,         'crc32_update'        , \

    crc32.final,          'crc32_final'         , \

    crc32.oneshot,        'crc32_oneshot'       , \

    md4.init,             'md4_init'            , \

    md4.update,           'md4_update'          , \

    md4.final,            'md4_final'           , \

    md4.oneshot,          'md4_oneshot'         , \

    md5.init,             'md5_init'            , \

    md5.update,           'md5_update'          , \

    md5.final,            'md5_final'           , \

    md5.oneshot,          'md5_oneshot'         , \

    sha1.init,            'sha1_init'           , \

    sha1.update,          'sha1_update'         , \

    sha1.final,           'sha1_final'          , \

    sha1.oneshot,         'sha1_oneshot'        , \

    sha224.init,          'sha224_init'         , \

    sha224.update,        'sha224_update'       , \

    sha224.final,         'sha224_final'        , \

    sha224.oneshot,       'sha224_oneshot'      , \

    sha256.init,          'sha256_init'         , \

    sha256.update,        'sha256_update'       , \

    sha256.final,         'sha256_final'        , \

    sha256.oneshot,       'sha256_oneshot'      , \

    sha384.init,          'sha384_init'         , \

    sha384.update,        'sha384_update'       , \

    sha384.final,         'sha384_final'        , \

    sha384.oneshot,       'sha384_oneshot'      , \

    sha512.init,          'sha512_init'         , \

    sha512.update,        'sha512_update'       , \

    sha512.final,         'sha512_final'        , \

    sha512.oneshot,       'sha512_oneshot'      , \

    sha3_224.init,        'sha3_224_init'       , \

    sha3_224.update,      'sha3_224_update'     , \

    sha3_224.final,       'sha3_224_final'      , \

    sha3_224.oneshot,     'sha3_224_oneshot'    , \

    sha3_256.init,        'sha3_256_init'       , \

    sha3_256.update,      'sha3_256_update'     , \

    sha3_256.final,       'sha3_256_final'      , \

    sha3_256.oneshot,     'sha3_256_oneshot'    , \

    sha3_384.init,        'sha3_384_init'       , \

    sha3_384.update,      'sha3_384_update'     , \

    sha3_384.final,       'sha3_384_final'      , \

    sha3_384.oneshot,     'sha3_384_oneshot'    , \

    sha3_512.init,        'sha3_512_init'       , \

    sha3_512.update,      'sha3_512_update'     , \

    sha3_512.final,       'sha3_512_final'      , \

    sha3_512.oneshot,     'sha3_512_oneshot'