lib/mbedtls
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Merge branch 'development' into development-restricted

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This commit is contained in:
Jaeden Amero
2018-01-25 16:05:54 +00:00
parent 3885446f72 005239e3ed
commit 66954e1c1f
36 changed files with 2182 additions and 681 deletions
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51
library/pem.c
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@ -82,31 +82,33 @@ static int pem_get_iv( const unsigned char *s, unsigned char *iv,
return( 0 );
}
static void pem_pbkdf1( unsigned char *key, size_t keylen,
unsigned char *iv,
const unsigned char *pwd, size_t pwdlen )
static int pem_pbkdf1( unsigned char *key, size_t keylen,
unsigned char *iv,
const unsigned char *pwd, size_t pwdlen )
{
mbedtls_md5_context md5_ctx;
unsigned char md5sum[16];
size_t use_len;
int ret;
mbedtls_md5_init( &md5_ctx );
/*
* key[ 0..15] = MD5(pwd || IV)
*/
mbedtls_md5_starts( &md5_ctx );
mbedtls_md5_update( &md5_ctx, pwd, pwdlen );
mbedtls_md5_update( &md5_ctx, iv, 8 );
mbedtls_md5_finish( &md5_ctx, md5sum );
if( ( ret = mbedtls_md5_starts_ret( &md5_ctx ) ) != 0 )
goto exit;
if( ( ret = mbedtls_md5_update_ret( &md5_ctx, pwd, pwdlen ) ) != 0 )
goto exit;
if( ( ret = mbedtls_md5_update_ret( &md5_ctx, iv, 8 ) ) != 0 )
goto exit;
if( ( ret = mbedtls_md5_finish_ret( &md5_ctx, md5sum ) ) != 0 )
goto exit;
if( keylen <= 16 )
{
memcpy( key, md5sum, keylen );
mbedtls_md5_free( &md5_ctx );
mbedtls_zeroize( md5sum, 16 );
return;
goto exit;
}
memcpy( key, md5sum, 16 );
@ -114,11 +116,16 @@ static void pem_pbkdf1( unsigned char *key, size_t keylen,
/*
* key[16..23] = MD5(key[ 0..15] || pwd || IV])
*/
mbedtls_md5_starts( &md5_ctx );
mbedtls_md5_update( &md5_ctx, md5sum, 16 );
mbedtls_md5_update( &md5_ctx, pwd, pwdlen );
mbedtls_md5_update( &md5_ctx, iv, 8 );
mbedtls_md5_finish( &md5_ctx, md5sum );
if( ( ret = mbedtls_md5_starts_ret( &md5_ctx ) ) != 0 )
goto exit;
if( ( ret = mbedtls_md5_update_ret( &md5_ctx, md5sum, 16 ) ) != 0 )
goto exit;
if( ( ret = mbedtls_md5_update_ret( &md5_ctx, pwd, pwdlen ) ) != 0 )
goto exit;
if( ( ret = mbedtls_md5_update_ret( &md5_ctx, iv, 8 ) ) != 0 )
goto exit;
if( ( ret = mbedtls_md5_finish_ret( &md5_ctx, md5sum ) ) != 0 )
goto exit;
use_len = 16;
if( keylen < 32 )
@ -126,8 +133,11 @@ static void pem_pbkdf1( unsigned char *key, size_t keylen,
memcpy( key + 16, md5sum, use_len );
exit:
mbedtls_md5_free( &md5_ctx );
mbedtls_zeroize( md5sum, 16 );
return( ret );
}
#if defined(MBEDTLS_DES_C)
@ -144,7 +154,8 @@ static int pem_des_decrypt( unsigned char des_iv[8],
mbedtls_des_init( &des_ctx );
pem_pbkdf1( des_key, 8, des_iv, pwd, pwdlen );
if( ( ret = pem_pbkdf1( des_key, 8, des_iv, pwd, pwdlen ) ) != 0 )
goto exit;
if( ( ret = mbedtls_des_setkey_dec( &des_ctx, des_key ) ) != 0 )
goto exit;
@ -171,7 +182,8 @@ static int pem_des3_decrypt( unsigned char des3_iv[8],
mbedtls_des3_init( &des3_ctx );
pem_pbkdf1( des3_key, 24, des3_iv, pwd, pwdlen );
if( ( ret = pem_pbkdf1( des3_key, 24, des3_iv, pwd, pwdlen ) ) != 0 )
goto exit;
if( ( ret = mbedtls_des3_set3key_dec( &des3_ctx, des3_key ) ) != 0 )
goto exit;
@ -200,7 +212,8 @@ static int pem_aes_decrypt( unsigned char aes_iv[16], unsigned int keylen,
mbedtls_aes_init( &aes_ctx );
pem_pbkdf1( aes_key, keylen, aes_iv, pwd, pwdlen );
if( ( ret = pem_pbkdf1( aes_key, keylen, aes_iv, pwd, pwdlen ) ) != 0 )
goto exit;
if( ( ret = mbedtls_aes_setkey_dec( &aes_ctx, aes_key, keylen * 8 ) ) != 0 )
goto exit;