246 lines
7.0 KiB
C++
246 lines
7.0 KiB
C++
/***************************************************************************************
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*
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* IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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*
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* By downloading, copying, installing or using the software you agree to this license.
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* If you do not agree to this license, do not download, install,
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* copy or use the software.
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*
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* Copyright (C) 2014-2024, Happytimesoft Corporation, all rights reserved.
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*
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* Redistribution and use in binary forms, with or without modification, are permitted.
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*
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* Unless required by applicable law or agreed to in writing, software distributed
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* under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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* CONDITIONS OF ANY KIND, either express or implied. See the License for the specific
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* language governing permissions and limitations under the License.
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*
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****************************************************************************************/
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#include "sys_inc.h"
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#include "rfc_md5.h"
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#define GET_UINT32(n,b,i) \
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{ \
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(n) = ( (uint32) (b)[(i) ] ) \
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| ( (uint32) (b)[(i) + 1] << 8 ) \
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| ( (uint32) (b)[(i) + 2] << 16 ) \
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| ( (uint32) (b)[(i) + 3] << 24 ); \
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}
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#define PUT_UINT32(n,b,i) \
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{ \
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(b)[(i) ] = (uint8) ( (n) ); \
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(b)[(i) + 1] = (uint8) ( (n) >> 8 ); \
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(b)[(i) + 2] = (uint8) ( (n) >> 16 ); \
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(b)[(i) + 3] = (uint8) ( (n) >> 24 ); \
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}
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HT_API void md5_starts(md5_context *ctx)
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{
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ctx->total[0] = 0;
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ctx->total[1] = 0;
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ctx->state[0] = 0x67452301;
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ctx->state[1] = 0xEFCDAB89;
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ctx->state[2] = 0x98BADCFE;
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ctx->state[3] = 0x10325476;
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}
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void md5_process(md5_context *ctx, uint8 data[64])
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{
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uint32 X[16], A, B, C, D;
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GET_UINT32( X[0], data, 0 );
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GET_UINT32( X[1], data, 4 );
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GET_UINT32( X[2], data, 8 );
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GET_UINT32( X[3], data, 12 );
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GET_UINT32( X[4], data, 16 );
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GET_UINT32( X[5], data, 20 );
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GET_UINT32( X[6], data, 24 );
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GET_UINT32( X[7], data, 28 );
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GET_UINT32( X[8], data, 32 );
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GET_UINT32( X[9], data, 36 );
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GET_UINT32( X[10], data, 40 );
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GET_UINT32( X[11], data, 44 );
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GET_UINT32( X[12], data, 48 );
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GET_UINT32( X[13], data, 52 );
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GET_UINT32( X[14], data, 56 );
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GET_UINT32( X[15], data, 60 );
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#define S(x,n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
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#define P(a,b,c,d,k,s,t) \
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{ \
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a += F(b,c,d) + X[k] + t; a = S(a,s) + b; \
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}
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A = ctx->state[0];
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B = ctx->state[1];
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C = ctx->state[2];
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D = ctx->state[3];
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#define F(x,y,z) (z ^ (x & (y ^ z)))
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P( A, B, C, D, 0, 7, 0xD76AA478 );
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P( D, A, B, C, 1, 12, 0xE8C7B756 );
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P( C, D, A, B, 2, 17, 0x242070DB );
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P( B, C, D, A, 3, 22, 0xC1BDCEEE );
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P( A, B, C, D, 4, 7, 0xF57C0FAF );
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P( D, A, B, C, 5, 12, 0x4787C62A );
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P( C, D, A, B, 6, 17, 0xA8304613 );
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P( B, C, D, A, 7, 22, 0xFD469501 );
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P( A, B, C, D, 8, 7, 0x698098D8 );
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P( D, A, B, C, 9, 12, 0x8B44F7AF );
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P( C, D, A, B, 10, 17, 0xFFFF5BB1 );
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P( B, C, D, A, 11, 22, 0x895CD7BE );
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P( A, B, C, D, 12, 7, 0x6B901122 );
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P( D, A, B, C, 13, 12, 0xFD987193 );
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P( C, D, A, B, 14, 17, 0xA679438E );
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P( B, C, D, A, 15, 22, 0x49B40821 );
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#undef F
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#define F(x,y,z) (y ^ (z & (x ^ y)))
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P( A, B, C, D, 1, 5, 0xF61E2562 );
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P( D, A, B, C, 6, 9, 0xC040B340 );
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P( C, D, A, B, 11, 14, 0x265E5A51 );
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P( B, C, D, A, 0, 20, 0xE9B6C7AA );
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P( A, B, C, D, 5, 5, 0xD62F105D );
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P( D, A, B, C, 10, 9, 0x02441453 );
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P( C, D, A, B, 15, 14, 0xD8A1E681 );
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P( B, C, D, A, 4, 20, 0xE7D3FBC8 );
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P( A, B, C, D, 9, 5, 0x21E1CDE6 );
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P( D, A, B, C, 14, 9, 0xC33707D6 );
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P( C, D, A, B, 3, 14, 0xF4D50D87 );
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P( B, C, D, A, 8, 20, 0x455A14ED );
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P( A, B, C, D, 13, 5, 0xA9E3E905 );
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P( D, A, B, C, 2, 9, 0xFCEFA3F8 );
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P( C, D, A, B, 7, 14, 0x676F02D9 );
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P( B, C, D, A, 12, 20, 0x8D2A4C8A );
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#undef F
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#define F(x,y,z) (x ^ y ^ z)
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P( A, B, C, D, 5, 4, 0xFFFA3942 );
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P( D, A, B, C, 8, 11, 0x8771F681 );
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P( C, D, A, B, 11, 16, 0x6D9D6122 );
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P( B, C, D, A, 14, 23, 0xFDE5380C );
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P( A, B, C, D, 1, 4, 0xA4BEEA44 );
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P( D, A, B, C, 4, 11, 0x4BDECFA9 );
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P( C, D, A, B, 7, 16, 0xF6BB4B60 );
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P( B, C, D, A, 10, 23, 0xBEBFBC70 );
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P( A, B, C, D, 13, 4, 0x289B7EC6 );
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P( D, A, B, C, 0, 11, 0xEAA127FA );
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P( C, D, A, B, 3, 16, 0xD4EF3085 );
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P( B, C, D, A, 6, 23, 0x04881D05 );
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P( A, B, C, D, 9, 4, 0xD9D4D039 );
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P( D, A, B, C, 12, 11, 0xE6DB99E5 );
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P( C, D, A, B, 15, 16, 0x1FA27CF8 );
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P( B, C, D, A, 2, 23, 0xC4AC5665 );
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#undef F
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#define F(x,y,z) (y ^ (x | ~z))
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P( A, B, C, D, 0, 6, 0xF4292244 );
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P( D, A, B, C, 7, 10, 0x432AFF97 );
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P( C, D, A, B, 14, 15, 0xAB9423A7 );
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P( B, C, D, A, 5, 21, 0xFC93A039 );
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P( A, B, C, D, 12, 6, 0x655B59C3 );
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P( D, A, B, C, 3, 10, 0x8F0CCC92 );
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P( C, D, A, B, 10, 15, 0xFFEFF47D );
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P( B, C, D, A, 1, 21, 0x85845DD1 );
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P( A, B, C, D, 8, 6, 0x6FA87E4F );
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P( D, A, B, C, 15, 10, 0xFE2CE6E0 );
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P( C, D, A, B, 6, 15, 0xA3014314 );
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P( B, C, D, A, 13, 21, 0x4E0811A1 );
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P( A, B, C, D, 4, 6, 0xF7537E82 );
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P( D, A, B, C, 11, 10, 0xBD3AF235 );
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P( C, D, A, B, 2, 15, 0x2AD7D2BB );
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P( B, C, D, A, 9, 21, 0xEB86D391 );
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#undef F
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ctx->state[0] += A;
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ctx->state[1] += B;
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ctx->state[2] += C;
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ctx->state[3] += D;
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}
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HT_API void md5_update(md5_context *ctx, uint8 *input, uint32 length)
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{
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uint32 left, fill;
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if (!length)
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{
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return;
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}
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left = ctx->total[0] & 0x3F;
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fill = 64 - left;
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ctx->total[0] += length;
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ctx->total[0] &= 0xFFFFFFFF;
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if (ctx->total[0] < length)
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{
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ctx->total[1]++;
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}
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if (left && length >= fill)
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{
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memcpy((void *) (ctx->buffer + left), (void *) input, fill);
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md5_process(ctx, ctx->buffer);
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length -= fill;
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input += fill;
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left = 0;
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}
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while (length >= 64)
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{
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md5_process(ctx, input);
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length -= 64;
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input += 64;
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}
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if (length)
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{
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memcpy((void *) (ctx->buffer + left), (void *) input, length);
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}
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}
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HT_API void md5_finish(md5_context *ctx, uint8 digest[16])
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{
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uint32 last, padn;
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uint32 high, low;
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uint8 msglen[8];
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uint8 padding[64];
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high = (ctx->total[0] >> 29) | (ctx->total[1] << 3);
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low = (ctx->total[0] << 3);
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PUT_UINT32(low, msglen, 0);
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PUT_UINT32(high, msglen, 4);
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last = ctx->total[0] & 0x3F;
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padn = (last < 56) ? (56 - last) : (120 - last);
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memset(padding, 0, sizeof(padding));
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padding[0] = 0x80;
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md5_update(ctx, padding, padn);
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md5_update(ctx, msglen, 8);
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PUT_UINT32(ctx->state[0], digest, 0);
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PUT_UINT32(ctx->state[1], digest, 4);
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PUT_UINT32(ctx->state[2], digest, 8);
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PUT_UINT32(ctx->state[3], digest, 12);
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}
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