mirrors/openssl
0
0
Fork 0
mirror of https://github.com/openssl/openssl.git synced 2024-11-28 20:44:10 +08:00
Code Issues Packages Projects Releases Wiki Activity

Use the maximum block length for the extra size in the encrypt

Browse Source 
BIO buffer instead of hard coding it as 8.
This commit is contained in:
Dr. Stephen Henson 2001-10-03 12:47:03 +00:00
parent f329b8d73b
commit 1a095560f7
1 changed files with 6 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
crypto/evp/bio_enc.c
View File

@ -71,7 +71,7 @@ static int enc_new(BIO *h);
static int enc_free(BIO *data);
static long enc_callback_ctrl(BIO *h, int cmd, bio_info_cb *fps);
#define ENC_BLOCK_SIZE (1024*4)
#define BUF_OFFSET 8 /* XXX: why? */
#define BUF_OFFSET EVP_MAX_BLOCK_LENGTH
typedef struct enc_struct
{
@ -81,7 +81,10 @@ typedef struct enc_struct
int finished;
int ok; /* bad decrypt */
EVP_CIPHER_CTX cipher;
char buf[ENC_BLOCK_SIZE+BUF_OFFSET+2/*why?*/];
/* buf is larger than ENC_BLOCK_SIZE because EVP_DecryptUpdate
* can return up to a block more data than is presented to it
*/
char buf[ENC_BLOCK_SIZE+BUF_OFFSET+2];
} BIO_ENC_CTX;
static BIO_METHOD methods_enc=
@ -171,7 +174,7 @@ static int enc_read(BIO *b, char *out, int outl)
{
if (ctx->cont <= 0) break;
/* read in at offset 8, read the EVP_Cipher
/* read in at IV offset, read the EVP_Cipher
* documentation about why */
i=BIO_read(b->next_bio,&(ctx->buf[BUF_OFFSET]),ENC_BLOCK_SIZE);