arduino/esp8266
1
0
Fork 0
mirror of https://github.com/esp8266/Arduino.git synced 2025-06-13 13:01:55 +03:00
Code Activity

Allocation debugging, reduce SSL structure size.

Browse Source
This commit is contained in:
Ivan Grokhotkov
2015-09-01 15:59:34 +03:00
parent 6c91aa10fc
commit 6095fde37e
10 changed files with 82 additions and 116 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
ssl/gen_cert.c
View File

@ -214,14 +214,14 @@ static void gen_utc_time(uint8_t *buf, int *offset)
static void gen_pub_key2(const RSA_CTX *rsa_ctx, uint8_t *buf, int *offset)
{
static const uint8_t pub_key_seq[] =
static const uint8_t pub_key_seq[] =
{
ASN1_INTEGER, 0x03, 0x01, 0x00, 0x01 /* INTEGER 65537 */
};
int seq_offset;
int pub_key_size = rsa_ctx->num_octets;
uint8_t *block = (uint8_t *)alloca(pub_key_size);
uint8_t *block = (uint8_t *)malloc(pub_key_size);
int seq_size = pre_adjust_with_size(
ASN1_SEQUENCE, &seq_offset, buf, offset);
buf[(*offset)++] = ASN1_INTEGER;
@ -236,6 +236,7 @@ static void gen_pub_key2(const RSA_CTX *rsa_ctx, uint8_t *buf, int *offset)
set_gen_length(pub_key_size, buf, offset);
memcpy(&buf[*offset], block, pub_key_size);
free(block);
*offset += pub_key_size;
memcpy(&buf[*offset], pub_key_seq, sizeof(pub_key_seq));
*offset += sizeof(pub_key_seq);
@ -282,8 +283,8 @@ static void gen_signature(const RSA_CTX *rsa_ctx, const uint8_t *sha_dgst,
ASN1_NULL, 0x00, ASN1_OCTET_STRING, 0x14
};
uint8_t *enc_block = (uint8_t *)alloca(rsa_ctx->num_octets);
uint8_t *block = (uint8_t *)alloca(sizeof(asn1_sig) + SHA1_SIZE);
uint8_t *enc_block = (uint8_t *)malloc(rsa_ctx->num_octets);
uint8_t *block = (uint8_t *)malloc(sizeof(asn1_sig) + SHA1_SIZE);
int sig_size;
/* add the digest as an embedded asn.1 sequence */
@ -297,6 +298,8 @@ static void gen_signature(const RSA_CTX *rsa_ctx, const uint8_t *sha_dgst,
set_gen_length(sig_size+1, buf, offset);
buf[(*offset)++] = 0; /* bit string is multiple of 8 */
memcpy(&buf[*offset], enc_block, sig_size);
free(enc_block);
free(block);
*offset += sig_size;
}
@ -342,7 +345,7 @@ EXP_FUNC int STDCALL ssl_x509_create(SSL_CTX *ssl_ctx, uint32_t options, const c
{
int ret = X509_OK, offset = 0, seq_offset;
/* allocate enough space to load a new certificate */
uint8_t *buf = (uint8_t *)alloca(ssl_ctx->rsa_ctx->num_octets*2 + 512);
uint8_t *buf = (uint8_t *)malloc(ssl_ctx->rsa_ctx->num_octets*2 + 512);
uint8_t sha_dgst[SHA1_SIZE];
int seq_size = pre_adjust_with_size(ASN1_SEQUENCE,
&seq_offset, buf, &offset);
@ -357,6 +360,7 @@ EXP_FUNC int STDCALL ssl_x509_create(SSL_CTX *ssl_ctx, uint32_t options, const c
memcpy(*cert_data, buf, offset);
error:
free(buf);
return ret < 0 ? ret : offset;
}