| /* BEGIN_HEADER */ |
| #include "polarssl/gcm.h" |
| /* END_HEADER */ |
| |
| /* BEGIN_DEPENDENCIES |
| * depends_on:POLARSSL_GCM_C |
| * END_DEPENDENCIES |
| */ |
| |
| /* BEGIN_CASE */ |
| void gcm_encrypt_and_tag( int cipher_id, |
| char *hex_key_string, char *hex_src_string, |
| char *hex_iv_string, char *hex_add_string, |
| char *hex_dst_string, int tag_len_bits, |
| char *hex_tag_string, int init_result ) |
| { |
| unsigned char key_str[128]; |
| unsigned char src_str[128]; |
| unsigned char dst_str[257]; |
| unsigned char iv_str[128]; |
| unsigned char add_str[128]; |
| unsigned char tag_str[128]; |
| unsigned char output[128]; |
| unsigned char tag_output[16]; |
| gcm_context ctx; |
| unsigned int key_len; |
| size_t pt_len, iv_len, add_len, tag_len = tag_len_bits / 8; |
| |
| memset(key_str, 0x00, 128); |
| memset(src_str, 0x00, 128); |
| memset(dst_str, 0x00, 257); |
| memset(iv_str, 0x00, 128); |
| memset(add_str, 0x00, 128); |
| memset(tag_str, 0x00, 128); |
| memset(output, 0x00, 128); |
| memset(tag_output, 0x00, 16); |
| |
| key_len = unhexify( key_str, hex_key_string ); |
| pt_len = unhexify( src_str, hex_src_string ); |
| iv_len = unhexify( iv_str, hex_iv_string ); |
| add_len = unhexify( add_str, hex_add_string ); |
| |
| TEST_ASSERT( gcm_init( &ctx, cipher_id, key_str, key_len * 8 ) == init_result ); |
| if( init_result == 0 ) |
| { |
| TEST_ASSERT( gcm_crypt_and_tag( &ctx, GCM_ENCRYPT, pt_len, iv_str, iv_len, add_str, add_len, src_str, output, tag_len, tag_output ) == 0 ); |
| hexify( dst_str, output, pt_len ); |
| hexify( tag_str, tag_output, tag_len ); |
| |
| TEST_ASSERT( strcmp( (char *) dst_str, hex_dst_string ) == 0 ); |
| TEST_ASSERT( strcmp( (char *) tag_str, hex_tag_string ) == 0 ); |
| } |
| |
| exit: |
| gcm_free( &ctx ); |
| } |
| /* END_CASE */ |
| |
| /* BEGIN_CASE */ |
| void gcm_decrypt_and_verify( int cipher_id, |
| char *hex_key_string, char *hex_src_string, |
| char *hex_iv_string, char *hex_add_string, |
| int tag_len_bits, char *hex_tag_string, |
| char *pt_result, int init_result ) |
| { |
| unsigned char key_str[128]; |
| unsigned char src_str[128]; |
| unsigned char dst_str[257]; |
| unsigned char iv_str[128]; |
| unsigned char add_str[128]; |
| unsigned char tag_str[128]; |
| unsigned char output[128]; |
| gcm_context ctx; |
| unsigned int key_len; |
| size_t pt_len, iv_len, add_len, tag_len = tag_len_bits / 8; |
| int ret; |
| |
| memset(key_str, 0x00, 128); |
| memset(src_str, 0x00, 128); |
| memset(dst_str, 0x00, 257); |
| memset(iv_str, 0x00, 128); |
| memset(add_str, 0x00, 128); |
| memset(tag_str, 0x00, 128); |
| memset(output, 0x00, 128); |
| |
| key_len = unhexify( key_str, hex_key_string ); |
| pt_len = unhexify( src_str, hex_src_string ); |
| iv_len = unhexify( iv_str, hex_iv_string ); |
| add_len = unhexify( add_str, hex_add_string ); |
| unhexify( tag_str, hex_tag_string ); |
| |
| TEST_ASSERT( gcm_init( &ctx, cipher_id, key_str, key_len * 8 ) == init_result ); |
| if( init_result == 0 ) |
| { |
| ret = gcm_auth_decrypt( &ctx, pt_len, iv_str, iv_len, add_str, add_len, tag_str, tag_len, src_str, output ); |
| |
| if( strcmp( "FAIL", pt_result ) == 0 ) |
| { |
| TEST_ASSERT( ret == POLARSSL_ERR_GCM_AUTH_FAILED ); |
| } |
| else |
| { |
| TEST_ASSERT( ret == 0 ); |
| hexify( dst_str, output, pt_len ); |
| |
| TEST_ASSERT( strcmp( (char *) dst_str, pt_result ) == 0 ); |
| } |
| } |
| |
| exit: |
| gcm_free( &ctx ); |
| } |
| /* END_CASE */ |
| |
| /* BEGIN_CASE depends_on:POLARSSL_SELF_TEST */ |
| void gcm_selftest() |
| { |
| TEST_ASSERT( gcm_self_test( 0 ) == 0 ); |
| } |
| /* END_CASE */ |