RBOOL verifyC2Signature ( RPU8 buffer, RU32 bufferSize, RU8 signature[ CRYPTOLIB_SIGNATURE_SIZE ] ) { RBOOL isValid = FALSE; RPU8 pubKey = NULL; if( NULL != buffer && 0 != bufferSize && NULL != signature ) { pubKey = getC2PublicKey(); if( NULL != pubKey ) { if( CryptoLib_verify( buffer, bufferSize, pubKey, signature ) ) { isValid = TRUE; } } } return isValid; }
static rString assembleOutboundStream ( RpHcp_ModuleId moduleId, rList payload, RU8 sessionKey[ CRYPTOLIB_SYM_KEY_SIZE ], RU8 sessionIv[ CRYPTOLIB_SYM_IV_SIZE ] ) { rString str = NULL; rSequence hdrSeq = NULL; rSequence hcpid = NULL; rBlob blob = NULL; RPCHAR encoded = NULL; RPU8 encBuffer = NULL; RU64 encSize = 0; RPU8 finalBuffer = NULL; RU32 finalSize = 0; RPCHAR hostName = NULL; RBOOL isSuccess = FALSE; OBFUSCATIONLIB_DECLARE( payHdr, RP_HCP_CONFIG_PAYLOAD_HDR ); str = rpal_stringbuffer_new( 0, 0, FALSE ); if( NULL != str ) { if( NULL != ( hdrSeq = rSequence_new() ) ) { if( NULL != ( hcpid = hcpIdToSeq( g_hcpContext.currentId ) ) ) { // System basic information // Host Name if( NULL != ( hostName = libOs_getHostName() ) ) { rSequence_addSTRINGA( hdrSeq, RP_TAGS_HOST_NAME, hostName ); rpal_memory_free( hostName ); } else { rpal_debug_warning( "could not determine hostname" ); } // Internal IP rSequence_addIPV4( hdrSeq, RP_TAGS_IP_ADDRESS, libOs_getMainIp() ); if( rSequence_addSEQUENCE( hdrSeq, RP_TAGS_HCP_ID, hcpid ) && rSequence_addRU8( hdrSeq, RP_TAGS_HCP_MODULE_ID, moduleId ) && rSequence_addBUFFER( hdrSeq, RP_TAGS_SYM_KEY, sessionKey, CRYPTOLIB_SYM_KEY_SIZE ) && rSequence_addBUFFER( hdrSeq, RP_TAGS_SYM_IV, sessionIv, CRYPTOLIB_SYM_IV_SIZE ) ) { if( NULL != g_hcpContext.enrollmentToken && 0 != g_hcpContext.enrollmentTokenSize ) { rSequence_addBUFFER( hdrSeq, RP_TAGS_HCP_ENROLLMENT_TOKEN, g_hcpContext.enrollmentToken, g_hcpContext.enrollmentTokenSize ); } if( NULL != payload ) { blob = rpal_blob_create( 0, 0 ); } if( NULL == payload || NULL != blob ) { if( rSequence_serialise( hdrSeq, blob ) && ( NULL == payload || rList_serialise( payload, blob ) ) ) { encSize = compressBound( rpal_blob_getSize( blob ) ); encBuffer = rpal_memory_alloc( (RU32)encSize ); if( NULL == payload || NULL != encBuffer ) { if( NULL == payload || Z_OK == compress( encBuffer, (uLongf*)&encSize, (RPU8)rpal_blob_getBuffer( blob ), rpal_blob_getSize( blob ) ) ) { FREE_N_NULL( blob, rpal_blob_free ); if( NULL == payload || CryptoLib_fastAsymEncrypt( encBuffer, (RU32)encSize, getC2PublicKey(), &finalBuffer, &finalSize ) ) { FREE_N_NULL( encBuffer, rpal_memory_free ); if( NULL == payload || base64_encode( finalBuffer, finalSize, &encoded, TRUE ) ) { isSuccess = TRUE; if( NULL != payload ) { FREE_N_NULL( finalBuffer, rpal_memory_free ); DO_IFF( rpal_stringbuffer_add( str, "&" ), isSuccess ); OBFUSCATIONLIB_TOGGLE( payHdr ); DO_IFF( rpal_stringbuffer_add( str, (RPCHAR)payHdr ), isSuccess ); DO_IFF( rpal_stringbuffer_add( str, encoded ), isSuccess ); OBFUSCATIONLIB_TOGGLE( payHdr ); } IF_VALID_DO( encoded, rpal_memory_free ); } IF_VALID_DO( finalBuffer, rpal_memory_free ); } } IF_VALID_DO( encBuffer, rpal_memory_free ); } } IF_VALID_DO( blob, rpal_blob_free ); } } } rSequence_free( hdrSeq ); } if( !isSuccess ) { rpal_stringbuffer_free( str ); str = NULL; } } return str; }