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[arm-crypto-lib.git] / bmw / bmw_large_speed.c

diff --git a/bmw/bmw_large_speed.c b/bmw/bmw_large_speed.c
index b5ae2b48fe6735319663e8653f9a14cb356e6424..c20887cb2a1d0e0a7b5333e855e3ccbb6db76a34 100644 (file)
--- a/bmw/bmw_large_speed.c
+++ b/bmw/bmw_large_speed.c
@@ -226,32 +226,35 @@ void bmw_large_nextBlock(bmw_large_ctx_t* ctx, const void* block){
 }
 
 void bmw_large_lastBlock(bmw_large_ctx_t* ctx, const void* block, uint16_t length_b){
-       uint8_t buffer[128];
+       union {
+               uint8_t   v8[128];
+               uint64_t v64[ 16];
+       } buffer;
        while(length_b >= BMW_LARGE_BLOCKSIZE){
                bmw_large_nextBlock(ctx, block);
                length_b -= BMW_LARGE_BLOCKSIZE;
                block = (uint8_t*)block + BMW_LARGE_BLOCKSIZE_B;
        }
-       memset(buffer, 0, 128);
-       memcpy(buffer, block, (length_b+7)/8);
-       buffer[length_b>>3] |= 0x80 >> (length_b&0x07);
+       memset(buffer.v8, 0, 128);
+       memcpy(buffer.v8, block, (length_b+7)/8);
+       buffer.v8[length_b>>3] |= 0x80 >> (length_b&0x07);
        if(length_b+1>128*8-64){
-               bmw_large_nextBlock(ctx, buffer);
-               memset(buffer, 0, 128-8);
+               bmw_large_nextBlock(ctx, buffer.v8);
+               memset(buffer.v8, 0, 128-8);
                ctx->counter -= 1;
        }
-       *((uint64_t*)&(buffer[128-8])) = (uint64_t)(ctx->counter*1024LL)+(uint64_t)length_b;
-       bmw_large_nextBlock(ctx, buffer);
+       buffer.v64[15] = (uint64_t)(ctx->counter*1024LL)+(uint64_t)length_b;
+       bmw_large_nextBlock(ctx, buffer.v8);
        uint8_t i;
        uint64_t q[32];
-       memset(buffer, 0xaa, 128);
+       memset(buffer.v8, 0xaa, 128);
        for(i=0; i<16; ++i){
-               buffer[8*i] = i + 0xa0;
+               buffer.v8[8*i] = i + 0xa0;
        }
-       bmw_large_f0(q, (uint64_t*)buffer, ctx->h);
-       bmw_large_f1(q, ctx->h, (uint64_t*)buffer);
-       bmw_large_f2((uint64_t*)buffer, q, ctx->h);
-       memcpy(ctx->h, buffer, 128);
+       bmw_large_f0(q, buffer.v64, ctx->h);
+       bmw_large_f1(q, ctx->h, buffer.v64);
+       bmw_large_f2(buffer.v64, q, ctx->h);
+       memcpy(ctx->h, buffer.v8, 128);
 }
 
 void bmw384_init(bmw384_ctx_t* ctx){