mirrors/tor
1
0
Fork 0
mirror of https://gitlab.torproject.org/tpo/core/tor.git synced 2024-11-20 10:12:15 +01:00
Code Issues Projects Releases Wiki Activity

we now encrypt the entire cell on the link, not just the header

Browse Source 
previously padding cells, etc were distinguishable because their body was
all zero's


svn:r84
This commit is contained in:
Roger Dingledine 2002-08-24 08:24:30 +00:00
parent 39423023af
commit 26587827b2
2 changed files with 9 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
src/or/connection.c
View File

@ -495,15 +495,15 @@ int connection_send_destroy(aci_t aci, connection_t *conn) {
int connection_write_cell_to_buf(cell_t *cellp, connection_t *conn) {
if(connection_encrypt_cell_header(cellp,conn)<0) {
if(connection_encrypt_cell(cellp,conn)<0) {
return -1;
}
return connection_write_to_buf((char *)cellp, sizeof(cell_t), conn);
}
int connection_encrypt_cell_header(cell_t *cellp, connection_t *conn) {
char newheader[8];
int connection_encrypt_cell(cell_t *cellp, connection_t *conn) {
cell_t newcell;
#if 0
int x;
char *px;
@ -516,8 +516,8 @@ int connection_encrypt_cell_header(cell_t *cellp, connection_t *conn) {
printf("\n");
#endif
if(crypto_cipher_encrypt(conn->f_crypto, (char *)cellp, 8, newheader)) {
log(LOG_ERR,"Could not encrypt data for connection %s:%u.",conn->address,conn->port);
if(crypto_cipher_encrypt(conn->f_crypto, (char *)cellp, sizeof(cell_t), &newcell)) {
log(LOG_ERR,"Could not encrypt cell for connection %s:%u.",conn->address,conn->port);
return -1;
}
#if 0
@ -528,7 +528,7 @@ int connection_encrypt_cell_header(cell_t *cellp, connection_t *conn) {
printf("\n");
#endif
memcpy(cellp,newheader,8);
memcpy(cellp,&newcell,sizeof(cell_t));
return 0;
}
@ -697,7 +697,7 @@ int connection_process_cell_from_inbuf(connection_t *conn) {
printf("\n");
#endif
/* decrypt */
if(crypto_cipher_decrypt(conn->b_crypto,crypted,8,(unsigned char *)outbuf)) {
if(crypto_cipher_decrypt(conn->b_crypto,crypted,sizeof(cell_t),(unsigned char *)outbuf)) {
log(LOG_ERR,"connection_process_cell_from_inbuf(): Decryption failed, dropping.");
return connection_process_inbuf(conn); /* process the remainder of the buffer */
}
@ -711,7 +711,7 @@ int connection_process_cell_from_inbuf(connection_t *conn) {
#endif
/* copy the rest of the cell */
memcpy((char *)outbuf+8, (char *)crypted+8, sizeof(cell_t)-8);
// memcpy((char *)outbuf+8, (char *)crypted+8, sizeof(cell_t)-8);
cellp = (cell_t *)outbuf;
// log(LOG_DEBUG,"connection_process_cell_from_inbuf(): Decrypted cell is of type %u (ACI %u).",cellp->command,cellp->aci);
command_process_cell(cellp, conn);

2
src/or/or.h
View File

@ -426,7 +426,7 @@ int connection_speaks_cells(connection_t *conn);
int connection_state_is_open(connection_t *conn);
int connection_send_destroy(aci_t aci, connection_t *conn);
int connection_encrypt_cell_header(cell_t *cellp, connection_t *conn);
int connection_encrypt_cell(cell_t *cellp, connection_t *conn);
int connection_write_cell_to_buf(cell_t *cellp, connection_t *conn);
int connection_process_inbuf(connection_t *conn);