Add new mbedtls_pkcs12_pbe_ext function to replace
old mbedtls_pkcs12_pbe function that have security
issues.
Signed-off-by: Waleed Elmelegy <waleed.elmelegy@arm.com>
We only support ECB and CBC modes for DES. Those two modes require
both encrypt and decrypt directions, so we don't consider DES with
CIPHER_ENCRYPT_ONLY.
Signed-off-by: Yanray Wang <yanray.wang@arm.com>
This is not required (it's ok to define the default in mbedtls_config and
skip the definition in rsa.h), but comment it out for uniformity with all
the other options in this section.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Mbed TLS can be configured by writing a configuration file from scratch,
without copying mbedtls_config.h. As a consequence, all the macro
definitions in mbedtls_config.h must be optional. This was not the case for
some MBEDTLS_SSL_TLS1_3_xxx macros with numerical values related to session
tickets. Fix that.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Boolean options that modify the behavior of a module are supposed to be in
the "feature support" section, not in the "configuration options" support:
that section is documented to contain commented-out definitions with a
value, for which the comment contains the default version. In particular,
merely uncommenting a definition in the "configuration options" section is
not supposed to change anything.
Move the offending boolean options to the proper section.
This causes those options to be enabled by `config.py full` unless
explicitly excluded. For all the offending options, this is undesirable, so
make sure those options are indeed excluded.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
* Prevent pkcs12_pbe encryption when PKCS7 padding has been
disabled since this not part of the specs.
* Allow decryption when PKCS7 padding is disabled for legacy
reasons, However, invalid padding is not checked.
* Document new behaviour, known limitations and possible
security concerns.
* Add tests to check these scenarios. Test data has been
generated by the below code using OpenSSL as a reference:
#include <openssl/pkcs12.h>
#include <openssl/evp.h>
#include <openssl/des.h>
#include <openssl/asn1.h>
#include "crypto/asn1.h"
#include <string.h>
int main()
{
char pass[] = "\xBB\xBB\xBB\xBB\xBB\xBB\xBB\xBB\xBB";
unsigned char salt[] = "\xCC\xCC\xCC\xCC\xCC\xCC\xCC\xCC\xCC";
unsigned char plaintext[] = "\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA";
unsigned char *ciphertext = NULL;
int iter = 10;
X509_ALGOR *alg = X509_ALGOR_new();
int ciphertext_len = 0;
int alg_nid = NID_pbe_WithSHA1And3_Key_TripleDES_CBC;
alg->parameter = ASN1_TYPE_new();
struct asn1_object_st * aobj;
PKCS5_pbe_set0_algor(alg, alg_nid, iter,
salt, sizeof(salt)-1);
aobj = alg->algorithm;
printf("\"30%.2X", 2 + aobj->length + alg->parameter->value.asn1_string->length);
printf("06%.2X", aobj->length);
for (int i = 0; i < aobj->length; i++) {
printf("%.2X", aobj->data[i]);
}
for (int i = 0; i < alg->parameter->value.asn1_string->length; i++) {
printf("%.2X", alg->parameter->value.asn1_string->data[i]);
}
printf("\":\"");
for (int i = 0; i < sizeof(pass)-1; i++) {
printf("%.2X", pass[i] & 0xFF);
}
printf("\":\"");
for (int i = 0; i < sizeof(plaintext)-1; i++) {
printf("%.2X", plaintext[i]);
}
printf("\":");
printf("0");
printf(":\"");
unsigned char * res = PKCS12_pbe_crypt(alg, pass, sizeof(pass)-1, plaintext, sizeof(plaintext)-1, &ciphertext, &ciphertext_len, 1);
if (res == NULL)
printf("Encryption failed!\n");
for (int i = 0; i < ciphertext_len; i++) {
printf("%.2X", res[i]);
}
printf("\"\n");
return 0;
}
Signed-off-by: Waleed Elmelegy <waleed.elmelegy@arm.com>
#
MBEDTLS_CIPHER_ENCRYPT_ONLY is an internal configuration which is
automatically enabled via the PSA. Typically,
once MBEDTLS_CIPHER_ENCRYPT_ONLY is enabled,
MBEDTLS_PSA_CRYPTO_CONFIG must be enabled. This check is only used
to prevent user explicitly enabling MBEDTLS_CIPHER_ENCRYPT_ONLY.
In addition, we shouldn't enable MBEDTLS_CIPHER_ENCRYPT_ONLY if
either CIPHER_MODE_CBC, CIPHER_MODE_XTS or NIST_KW_C is enabled.
Since three of them always need AES-decrypt.
Signed-off-by: Yanray Wang <yanray.wang@arm.com>
Some cipher modes use cipher-encrypt to encrypt and decrypt.
(E.g: ECB, CBC). This commit adds support to automatically
enable CIPHER_ENCRYPT_ONLY by PSA when requested cipher modes don't
need cipher_decrypt.
Signed-off-by: Yanray Wang <yanray.wang@arm.com>
Conflicts:
* `include/psa/crypto_sizes.h`: the addition of the `u` suffix in this branch
conflicts with the rework of the calculation of `PSA_HASH_MAX_SIZE` and
`PSA_HMAC_MAX_HASH_BLOCK_SIZE` in `development`. Use the new definitions
from `development`, and add the `u` suffix to the relevant constants.
aca31654e6e96c76b073e0ffedb6ae53c9e4f4c7 removed a sentence with copypasta
refering to PBKDF2 instead of XTS. Restore that comment but fix the
copypasta.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
