Nick Child 2022-09-14 14:51:23 -05:00
parent 34d5e931cf
commit 8ce1b1afc8
3 changed files with 18 additions and 19 deletions

View File

@ -22,23 +22,22 @@
*/
/**
* Note: For the time being, this application of the PKCS7 cryptographic
* Note: For the time being, this implementation of the PKCS7 cryptographic
* message syntax is a partial implementation of RFC 2315.
* Differences include:
* - The RFC specifies 6 different content types. The only type currently
* supported in MbedTLS is the signed data content type.
* supported in Mbed TLS is the signed data content type.
* - The only supported PKCS7 Signed Data syntax version is version 1
* - The RFC specifies support for BER. This application is limited to
* - The RFC specifies support for BER. This implementation is limited to
* DER only.
* - The RFC specifies that multiple digest algorithms can be specified
* in the Signed Data type. Only one digest algorithm is supported in MbedTLS.
* - The RFC specifies the Signed Data certificate format can be
* X509 or PKCS6. The only type currently supported in MbedTLS is X509.
* in the Signed Data type. Only one digest algorithm is supported in Mbed TLS.
* - The RFC specifies the Signed Data type can contain multiple X509 or PKCS6
* certificates. In Mbed TLS, this list can only contain 0 or 1 certificates
* and they must be in X509 format.
* - The RFC specifies the Signed Data type can contain
* certificate-revocation lists (crls). This application has no support
* certificate-revocation lists (crls). This implementation has no support
* for crls so it is assumed to be an empty list.
* - The RFC specifies support for multiple signers. This application only
* supports the Signed Data type with a single signer.
*/
#ifndef MBEDTLS_PKCS7_H

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@ -58,8 +58,7 @@
*/
void mbedtls_pkcs7_init( mbedtls_pkcs7 *pkcs7 )
{
memset( pkcs7, 0, sizeof( mbedtls_pkcs7 ) );
pkcs7->raw.p = NULL;
memset( pkcs7, 0, sizeof( *pkcs7 ) );
}
static int pkcs7_get_next_content_len( unsigned char **p, unsigned char *end,
@ -229,7 +228,7 @@ static int pkcs7_get_certificates( unsigned char **p, unsigned char *end,
* So, we support only the root certificate and the single signer.
* The behaviour would be improved with addition of multiple signer support.
*/
if (end_cert != end_set)
if ( end_cert != end_set )
{
ret = MBEDTLS_ERR_PKCS7_FEATURE_UNAVAILABLE;
goto out;
@ -702,7 +701,8 @@ out:
int mbedtls_pkcs7_signed_hash_verify( mbedtls_pkcs7 *pkcs7,
const mbedtls_x509_crt *cert,
const unsigned char *hash, size_t hashlen)
const unsigned char *hash,
size_t hashlen )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
const mbedtls_md_info_t *md_info;
@ -750,7 +750,7 @@ int mbedtls_pkcs7_signed_hash_verify( mbedtls_pkcs7 *pkcs7,
}
out:
return ( ret );
return( ret );
}
/*

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@ -76,15 +76,15 @@ void pkcs7_verify( char *pkcs7_file, char *crt, char *filetobesigned, int do_has
datalen = st.st_size;
data = mbedtls_calloc( datalen, 1 );
TEST_ASSERT( data != NULL);
TEST_ASSERT( data != NULL );
buflen = fread( (void *)data , sizeof( unsigned char ), datalen, file );
TEST_ASSERT( buflen == datalen);
TEST_ASSERT( buflen == datalen );
fclose( file );
if( do_hash_alg )
{
res = mbedtls_oid_get_md_alg( &(pkcs7.signed_data.digest_alg_identifiers), &md_alg );
res = mbedtls_oid_get_md_alg( &pkcs7.signed_data.digest_alg_identifiers, &md_alg );
TEST_ASSERT( res == 0 );
TEST_ASSERT( md_alg == (mbedtls_md_type_t) do_hash_alg );
md_info = mbedtls_md_info_from_type( md_alg );
@ -162,7 +162,7 @@ void pkcs7_verify_multiple_signers( char *pkcs7_file, char *crt1, char *crt2, ch
if( do_hash_alg )
{
res = mbedtls_oid_get_md_alg( &(pkcs7.signed_data.digest_alg_identifiers), &md_alg );
res = mbedtls_oid_get_md_alg( &pkcs7.signed_data.digest_alg_identifiers, &md_alg );
TEST_ASSERT( res == 0 );
TEST_ASSERT( md_alg == MBEDTLS_MD_SHA256 );
@ -171,7 +171,7 @@ void pkcs7_verify_multiple_signers( char *pkcs7_file, char *crt1, char *crt2, ch
res = mbedtls_md( md_info, data, datalen, hash );
TEST_ASSERT( res == 0 );
res = mbedtls_pkcs7_signed_hash_verify( &pkcs7, &x509_1, hash, sizeof(hash));
res = mbedtls_pkcs7_signed_hash_verify( &pkcs7, &x509_1, hash, sizeof(hash) );
TEST_ASSERT( res == res_expect );
}
else