Switch pkparse to use new mbedtls_pkcs12_pbe_ext function
and deprecate mbedtls_pkcs12_pbe function.
Signed-off-by: Waleed Elmelegy <waleed.elmelegy@arm.com>
Switch pkparse to use new mbedtls_pkcs5_pbes2_ext function
and deprecate mbedtls_pkcs5_pbes2 function.
Signed-off-by: Waleed Elmelegy <waleed.elmelegy@arm.com>
Return back to modifying input parameters in pkcs12_parse_pbe_params
to avoid change in behaviour.
Signed-off-by: Waleed Elmelegy <waleed.elmelegy@arm.com>
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>
* 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>
#
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>
New bignum modules are only needed when the new ecp_curves module is
present. Remove them when they are not needed to save code size.
Signed-off-by: Janos Follath <janos.follath@arm.com>
Add new mbedtls_pkcs5_pbe2_ext function to replace old
function with possible security issues.
Signed-off-by: Waleed Elmelegy <waleed.elmelegy@arm.com>
