eden-emu/mbedtls
15
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

- Added OpenSSL / PolarSSL compatibility script (tests/compat.sh) and example application (programs/ssl/o_p_test) (Requires OpenSSL)

Browse source 
- Handle encryption with private key and decryption with public key as per RFC 2313
This commit is contained in:
Paul Bakker 2012-05-19 08:43:48 +00:00
parent 50546921ac
commit e6ee41f932
5 changed files with 317 additions and 17 deletions
Download patch file Download diff file Expand all files Collapse all files

67
library/rsa.c
View file

@ -386,23 +386,34 @@ int rsa_pkcs1_encrypt( rsa_context *ctx,
nb_pad = olen - 3 - ilen;
*p++ = 0;
*p++ = RSA_CRYPT;
while( nb_pad-- > 0 )
if( mode == RSA_PUBLIC )
{
int rng_dl = 100;
*p++ = RSA_CRYPT;
do {
ret = f_rng( p_rng, p, 1 );
} while( *p == 0 && --rng_dl && ret == 0 );
while( nb_pad-- > 0 )
{
int rng_dl = 100;
// Check if RNG failed to generate data
//
if( rng_dl == 0 || ret != 0)
return POLARSSL_ERR_RSA_RNG_FAILED + ret;
do {
ret = f_rng( p_rng, p, 1 );
} while( *p == 0 && --rng_dl && ret == 0 );
p++;
// Check if RNG failed to generate data
//
if( rng_dl == 0 || ret != 0)
return POLARSSL_ERR_RSA_RNG_FAILED + ret;
p++;
}
}
else
{
*p++ = RSA_SIGN;
while( nb_pad-- > 0 )
*p++ = 0xFF;
}
*p++ = 0;
memcpy( p, input, ilen );
break;
@ -475,6 +486,7 @@ int rsa_pkcs1_decrypt( rsa_context *ctx,
int ret;
size_t ilen;
unsigned char *p;
unsigned char bt;
unsigned char buf[1024];
#if defined(POLARSSL_PKCS1_V21)
unsigned char lhash[POLARSSL_MD_MAX_SIZE];
@ -501,16 +513,37 @@ int rsa_pkcs1_decrypt( rsa_context *ctx,
{
case RSA_PKCS_V15:
if( *p++ != 0 || *p++ != RSA_CRYPT )
if( *p++ != 0 )
return( POLARSSL_ERR_RSA_INVALID_PADDING );
while( *p != 0 )
bt = *p++;
if( ( bt != RSA_CRYPT && mode == RSA_PRIVATE ) ||
( bt != RSA_SIGN && mode == RSA_PUBLIC ) )
{
if( p >= buf + ilen - 1 )
return( POLARSSL_ERR_RSA_INVALID_PADDING );
}
if( bt == RSA_CRYPT )
{
while( *p != 0 && p < buf + ilen - 1 )
p++;
if( *p != 0 || p >= buf + ilen - 1 )
return( POLARSSL_ERR_RSA_INVALID_PADDING );
p++;
}
p++;
else
{
while( *p == 0xFF && p < buf + ilen - 1 )
p++;
if( *p != 0 || p >= buf + ilen - 1 )
return( POLARSSL_ERR_RSA_INVALID_PADDING );
p++;
}
break;
#if defined(POLARSSL_PKCS1_V21)