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Commitf3329a8

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committed
fix
1 parentfdb514f commitf3329a8

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1 file changed

+25
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  • src/backend/storage/file

1 file changed

+25
-2
lines changed

‎src/backend/storage/file/cfs.c

Lines changed: 25 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -276,7 +276,7 @@ static void cfs_crypto_init(void)
276276
* For a file name like 'path/to/16384/16401[.123]' return part1 = 16384, part2 = 16401 and part3 = 123.
277277
* Returns 0 on success and negative value on error.
278278
*/
279-
staticintextract_fname_parts(constchar*fname,unsignedint*part1,unsignedint*part2,unsignedint*part3)
279+
staticintextract_fname_parts(constchar*fname,uint32*part1,uint32*part2,uint32*part3)
280280
{
281281
intidx=strlen(fname);
282282
if(idx==0)
@@ -321,13 +321,36 @@ static int extract_fname_parts(const char* fname, unsigned int* part1, unsigned
321321
/* Encryption and decryption using AES in CTR mode */
322322
staticvoidcfs_aes_crypt_block(constchar*fname,void*block,uint32offs,uint32size)
323323
{
324-
unsignedintfname_part1,fname_part2,fname_part3;
324+
uint32aes_in[4];/* 16 bytes, 128 bits */
325+
uint32aes_out[4];
326+
uint8*plaintext= (uint8*)block;
327+
uint8*pgamma= (uint8*)&aes_out;
328+
uint32i,fname_part1,fname_part2,fname_part3;
329+
325330
if(extract_fname_parts(fname,&fname_part1,&fname_part2,&fname_part3)<0)
326331
fname_part1=fname_part2=fname_part3=0;
327332

333+
// AALEKSEEV TODO MAKE DEBUG4
328334
elog(LOG,"cfs_aes_crypt_block, fname = %s, part1 = %d, part2 = %d, part3 = %d, offs = %d, size = %d",
329335
fname,fname_part1,fname_part2,fname_part3,offs,size);
330336

337+
aes_in[0]=fname_part1;
338+
aes_in[1]=fname_part2;
339+
aes_in[2]=fname_part3;
340+
aes_in[3]=offs&0xFFFFFFF0;
341+
rijndael_encrypt(&cfs_state->aes_context, (u4byte*)&aes_in, (u4byte*)&aes_out);
342+
343+
for(i=0;i<size;i++)
344+
{
345+
plaintext[i] ^=aes_out[offs&0xF];
346+
offs++;
347+
if((offs&0xF)==0)
348+
{
349+
/* Prepare next gamma part */
350+
aes_in[3]=offs;
351+
rijndael_encrypt(&cfs_state->aes_context, (u4byte*)&aes_in, (u4byte*)&aes_out);
352+
}
353+
}
331354
}
332355

333356
voidcfs_encrypt(constchar*fname,void*block,uint32offs,uint32size)

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