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Improve packet_decrypt().

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git-svn-id: svn+ssh://svn.berlios.de/svnroot/repos/libssh/trunk@479 7dcaeef0-15fb-0310-b436-a5af3365683c
This commit is contained in:
Andreas Schneider
2009-04-15 07:59:07 +00:00
parent 576187c686
commit c50da458d1
1 changed files with 22 additions and 16 deletions
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10
libssh/crypt.c
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@@ -57,11 +57,15 @@ u32 packet_decrypt_len(SSH_SESSION *session, char *crypted){
int packet_decrypt(SSH_SESSION *session, void *data,u32 len) { int packet_decrypt(SSH_SESSION *session, void *data,u32 len) {
struct crypto_struct *crypto = session->current_crypto->in_cipher; struct crypto_struct *crypto = session->current_crypto->in_cipher;
char *out=malloc(len); char *out = NULL;
out = malloc(len);
if (out == NULL) { if (out == NULL) {
return -1; return -1;
} }
ssh_log(session,SSH_LOG_PACKET, "Decrypting %d bytes", len); ssh_log(session,SSH_LOG_PACKET, "Decrypting %d bytes", len);
#ifdef HAVE_LIBGCRYPT #ifdef HAVE_LIBGCRYPT
crypto->set_decrypt_key(crypto,session->current_crypto->decryptkey,session->current_crypto->decryptIV); crypto->set_decrypt_key(crypto,session->current_crypto->decryptkey,session->current_crypto->decryptIV);
crypto->cbc_decrypt(crypto,data,out,len); crypto->cbc_decrypt(crypto,data,out,len);
@@ -69,9 +73,11 @@ int packet_decrypt(SSH_SESSION *session, void *data,u32 len){
crypto->set_decrypt_key(crypto,session->current_crypto->decryptkey); crypto->set_decrypt_key(crypto,session->current_crypto->decryptkey);
crypto->cbc_decrypt(crypto,data,out,len,session->current_crypto->decryptIV); crypto->cbc_decrypt(crypto,data,out,len,session->current_crypto->decryptIV);
#endif #endif
memcpy(data,out,len); memcpy(data,out,len);
memset(out,0,len); memset(out,0,len);
free(out);
SAFE_FREE(out);
return 0; return 0;
} }