* 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>
#
* Don't break string literals in the allow list definition
* Comment each test that belongs to the allow list is there.
Signed-off-by: Tomás González <tomasagustin.gonzalezorlando@arm.com>
* Turn the warnings produced when finding non-executed tests that
are not in the allow list into errors.
Signed-off-by: Tomás González <tomasagustin.gonzalezorlando@arm.com>
Do explain why we don't test a smaller buffer in addition to testing the
nominal size and a larger buffer.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Some basic test coverage for now:
* Nominal operation.
* Larger output buffer.
* Clone an operation and use it after the original operation stops.
Generate test data automatically. For the time being, only do that for
hashes that Python supports natively. Supporting all algorithms is future
work.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
aca31654e6 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>
They're included by build_info.h and must not be included directly.
Currently, this only concerns one file: config_psa.h. It's technically a bug
to include it, but a harmless one because that header has already been
included by build_info.h except in configurations where it
effectively had no effect (enabling PSA options with PSA turned off).
We plan to split config_psa.h into multiple headers that are less
independent, which could make the inclusion more problematic.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Since 3.0.0, mbedtls_config.h (formerly config.h) no longer needs to include
config_psa.h or check_config.h: build_info.h takes care of that.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Don't try to include MBEDTLS_PSA_CRYPTO_USER_CONFIG_FILE when
MBEDTLS_PSA_CRYPTO_CONFIG is disabled. This didn't make sense and was an
editorial mistake when adding it: it's meant as an addition to
MBEDTLS_PSA_CRYPTO_CONFIG_FILE, so it should be included under the same
conditions.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
