sec_signfmt_v4.c

#include "sec_sign_extension.h"
#include "sec_signfmt_v4.h"
#include "sec_signfmt_util.h"
#include "sec_log.h"
#include "sec_error.h"
#include "sec_boot_lib.h"
#include "sec_wrapper.h"
#include "sec_mtd_util.h"
#include <mach/sec_osal.h>  

/**************************************************************************
 *  MODULE NAME
 **************************************************************************/
#define MOD                         "SFMT_V4"


/******************************************************************************
 *  IMAGE VERIFICATION MEMORY DUMP FUNCTIONS
 ******************************************************************************/
#define DUMP_MORE_FOR_DEBUG 0

static u64 sec_get_u64(uint32 high, uint32 low)
{
    u64 value = 0;

    value = high;
    value = (value << 32) & 0xFFFFFFFF00000000ULL;
    value += low;

    return value;
}

#if DUMP_MORE_FOR_DEBUG
static void sec_signfmt_dump_buffer(uchar* buf, uint32 len)
{
    uint32 i = 0;

    for (i =1; i <len+1; i++)
    {                
        SMSG(true,"0x%x,",buf[i-1]);
        
        if(0 == (i%8))
            SMSG(true,"\n");
    }

    if(0 != (len%8))
        SMSG(true,"\n");    
}
#endif  

/**************************************************************************
 *  FUNCTION To Generate Hash by Chunk
 **************************************************************************/
static int sec_signfmt_image_read_64(ASF_FILE fp, char* part_name, u64 seek_offset, char* read_buf, uint32 read_len)
{
    uint32 read_sz = 0;
    uint32 ret = SEC_OK;
      
#if DUMP_MORE_FOR_DEBUG
        SMSG(true,"[%s] Read image for length %d at offset 0x%llx\n",MOD,read_len,seek_offset); 
#endif

    /* read from file */
    if (ASF_FILE_NULL != fp)
    {
        ASF_SEEK_SET(fp, seek_offset*sizeof(char));
        read_sz = ASF_READ(fp, read_buf, read_len);

        return read_sz;
    }
    /* read from mtd */
    else
    {
        if(SEC_OK != (ret = sec_dev_read_image ( pl2part(part_name), 
                                                (char*)read_buf, 
                                                seek_offset,
                                                read_len,
                                                NORMAL_ROM)))
        {
            SMSG(true,"[%s] read mtd '%s' fail at image offset 0x%llx with length 0x%x\n",MOD,(char*)pl2part(part_name),seek_offset,read_len);
            return 0;
        }

        return read_len;
    }
}


static int sec_signfmt_gen_hash_by_chunk_64(ASF_FILE img_fd, char* part_name, u64 img_hash_off, u64 img_hash_len,
    uchar *final_hash_buf, SEC_CRYPTO_HASH_TYPE hash_type, uint32 chunk_size)
{
    uint32 br = 0;
    uint32 ret = 0; 
    uchar *chunk_buf = NULL;
    uchar *hash_tmp = NULL;
    uchar *hash_comb = NULL;
    u64 seek_pos = 0;
    uint32 hash_size = get_hash_size(hash_type);
#if DUMP_MORE_FOR_DEBUG     
    u64 chunk_count = ((img_hash_len-1)/chunk_size)+1;
#endif
    uint32 read_size = 0;
    u64 left_size = 0;

    if(!img_hash_len)
    {
        
        SMSG(true,"[%s] hash length is zero, no need to do hash\n",MOD);
        ret = -1;
        memset(final_hash_buf, 0x00, hash_size);
        goto end_error;        
    }

#if DUMP_MORE_FOR_DEBUG    
    SMSG(sec_info.bMsg,"[%s] Hash size is %d (0x%x)\n",MOD, hash_size, hash_size);
    SMSG(sec_info.bMsg,"[%s] Offset is %d (0x%llx)\n",MOD, img_hash_off, img_hash_off);
    SMSG(sec_info.bMsg,"[%s] Size is %d (0x%llx)\n",MOD, img_hash_len, img_hash_len);
    SMSG(sec_info.bMsg,"[%s] Chunk size is %d (0x%x)\n",MOD, chunk_size, chunk_size);
    SMSG(sec_info.bMsg,"[%s] Chunk count is %d (0x%llx)\n",MOD, chunk_count, chunk_count);
#endif

    /* allocate hash buffer */
    hash_tmp = ASF_MALLOC(hash_size);
    hash_comb = ASF_MALLOC(hash_size*2);
    memset(hash_tmp, 0x00, hash_size);
    memset(hash_comb, 0x00, hash_size*2);

    /* allocate buffer with known chunk size */
    chunk_buf = ASF_MALLOC(chunk_size);

    /* caculate first hash */
    seek_pos = img_hash_off;
    left_size = img_hash_len;
    read_size = (left_size>=chunk_size)?chunk_size:(left_size & 0xFFFFFFFF);
    br = sec_signfmt_image_read_64(img_fd, part_name, seek_pos*sizeof(char), (char*)chunk_buf, read_size);
    if(br != read_size)
    {
        SMSG(true,"[%s] read image content fail, read offset = '0x%llx'\n",MOD,seek_pos);
        ret = -2;
        goto end_error;  
    }
    if( sec_hash(chunk_buf,read_size,hash_tmp,hash_size) == -1)
    {
        SMSG(true,"[%s] hash fail, offset is '0x%llx'(A)\n",MOD,seek_pos);
        ret = -3;
        goto end_error;
    }

#if DUMP_MORE_FOR_DEBUG
    /* ------------------------------------- */
    /* dump hash value for debug             */
    /* ------------------------------------- */    
    SMSG(sec_info.bMsg,"[%s] Data value(4 bytes) ==>\n",MOD);    
    sec_signfmt_dump_buffer(chunk_buf, 4);

    SMSG(sec_info.bMsg,"[%s] Hash value(single) (0x%llx): \n",MOD, seek_pos);    
    sec_signfmt_dump_buffer(hash_tmp, hash_size);   
#endif

    /* copy to compose buffer (first block) */
    mcpy(hash_comb,hash_tmp,hash_size);

    /* move next */
    seek_pos += read_size;
    left_size -= read_size;

    /* loop hash */
    while(left_size)
    {
        /* load data */
        read_size = (left_size>=chunk_size)?chunk_size:(left_size & 0xFFFFFFFF);
        br = sec_signfmt_image_read_64(img_fd, part_name, seek_pos*sizeof(char), (char*)chunk_buf, read_size);
        
        if(br != read_size)
        {
            SMSG(true,"[%s] read image content fail, read offset = '0x%llx'\n",MOD,seek_pos);
            ret = -4;
            goto end_error;  
        }
    
        /* caculate this hash */        
        if( sec_hash(chunk_buf,read_size,hash_tmp,hash_size) == -1)
        {
            SMSG(true,"[%s] hash fail, offset is '0x%llx'(B)\n",MOD,seek_pos);
            ret = -5;
            goto end_error;
        }

#if DUMP_MORE_FOR_DEBUG
        /* ------------------------------------- */
        /* dump hash value for debug             */
        /* ------------------------------------- */    
        SMSG(sec_info.bMsg,"[%s] Data value(4 bytes) ==>\n",MOD);    
        sec_signfmt_dump_buffer(chunk_buf, 4);
        
        SMSG(sec_info.bMsg,"[%s] Hash value(single) (0x%llx): \n",MOD, seek_pos);    
        sec_signfmt_dump_buffer(hash_tmp, hash_size);   
#endif

        /* compose two hash to buffer (second block) */
        mcpy(hash_comb+hash_size,hash_tmp,hash_size);

        /* caculate compose hash */
        if( sec_hash(hash_comb,hash_size*2,hash_tmp,hash_size) == -1)
        {
            SMSG(true,"[%s] hash fail, offset is '0x%llx'(C)\n",MOD,seek_pos);
            ret = -6;
            goto end_error;
        }

#if DUMP_MORE_FOR_DEBUG
        /* ------------------------------------- */
        /* dump hash value for debug             */
        /* ------------------------------------- */    
        SMSG(sec_info.bMsg,"[%s] Data value(4 bytes) ==>\n",MOD);    
        sec_signfmt_dump_buffer(chunk_buf, 4);
        
        SMSG(sec_info.bMsg,"[%s] Hash value(comp) (0x%llx): \n",MOD, seek_pos);    
        sec_signfmt_dump_buffer(hash_tmp, hash_size);  
#endif

        /* save this hash to compose buffer (first block) */
        mcpy(hash_comb,hash_tmp,hash_size);

        /* move next */        
        seek_pos += read_size;
        left_size -= read_size;
    }
    
    /* ------------------------------------- */
    /* dump hash value for debug             */
    /* ------------------------------------- */    
#if DUMP_MORE_FOR_DEBUG
    SMSG(sec_info.bMsg,"[%s] Hash value(final) (0x%llx): \n",MOD, seek_pos);    
    sec_signfmt_dump_buffer(hash_tmp, hash_size);   
#endif 

    /* copy hash */
    mcpy(final_hash_buf,hash_tmp,hash_size);
    
end_error:
    ASF_FREE(hash_comb);
    ASF_FREE(chunk_buf);
    ASF_FREE(hash_tmp);

    return ret;
}


/**************************************************************************
 *  FUNCTION To Search Extension Header
 **************************************************************************/
static uint32 sec_signfmt_search_extension_v4(uchar *ext, uint32 ext_len, SEC_IMG_EXTENSTION_SET *ext_set)
{
    SEC_EXTENSTION_END_MARK *search_pattern;
    uchar *d_ptr,*end_ptr;
    uint32 hash_only_idx = 0;

#if DUMP_MORE_FOR_DEBUG
    SMSG(sec_info.bMsg,"[%s] Dump extension data ============> START\n",MOD); 
    sec_signfmt_dump_buffer(ext,ext_len); 
    SMSG(sec_info.bMsg,"[%s] Dump extension data ============> END\n",MOD); 
#endif

    end_ptr = ext + ext_len;
    d_ptr = ext;

    while( d_ptr < end_ptr )
    {
        search_pattern = (SEC_EXTENSTION_END_MARK *)d_ptr;

        if(search_pattern->magic!=SEC_EXTENSION_HEADER_MAGIC)
        {
            SMSG(true,"[%s] Image extension header magic wrong\n",MOD); 
            return ERR_SIGN_FORMAT_EXT_HDR_MAGIC_WRONG;
        }

        switch(search_pattern->ext_type)
        {
            case SEC_EXT_HDR_CRYPTO:
                ext_set->crypto = (SEC_EXTENSTION_CRYPTO *)d_ptr;
                d_ptr += sizeof(SEC_EXTENSTION_CRYPTO);
                break;
            case SEC_EXT_HDR_FRAG_CFG:
                ext_set->frag = (SEC_FRAGMENT_CFG *)d_ptr;
                d_ptr += sizeof(SEC_FRAGMENT_CFG);
                ext_set->hash_only_64 = (SEC_EXTENSTION_HASH_ONLY_64 **)ASF_MALLOC(ext_set->frag->frag_count*sizeof(SEC_EXTENSTION_HASH_ONLY_64 *));
                break;
            case SEC_EXT_HDR_HASH_ONLY_64:
                ext_set->hash_only_64[hash_only_idx] = (SEC_EXTENSTION_HASH_ONLY_64 *)d_ptr;
                d_ptr += sizeof(SEC_EXTENSTION_HASH_ONLY_64) + get_hash_size(ext_set->hash_only_64[hash_only_idx]->sub_type);
                hash_only_idx++;
                break;
            case SEC_EXT_HDR_END_MARK:
                ext_set->end = (SEC_EXTENSTION_END_MARK *)d_ptr;
                d_ptr += sizeof(SEC_EXTENSTION_END_MARK);
                break;
            case SEC_EXT_HDR_HASH_SIG:
            default:
                SMSG(true,"[%s] Image header type not support %d\n",MOD,search_pattern->ext_type);                 
                return ERR_SIGN_FORMAT_EXT_TYPE_NOT_SUPPORT;
        }
    }

    if( ext_set->crypto == NULL || ext_set->frag == NULL || ext_set->hash_only_64 == NULL || ext_set->end == NULL)
    {
        SMSG(true,"[%s] Some header is not searched\n",MOD);
        return ERR_SIGN_FORMAT_EXT_HDR_NOT_FOUND;
    }

    return SEC_OK;
}


/**************************************************************************
 *  FUNCTION To Get Hash Length
 **************************************************************************/
unsigned int sec_signfmt_get_hash_length_v4(SECURE_IMG_INFO_V3 *img_if, ASF_FILE fp, SEC_IMG_HEADER *file_img_hdr_p, char *ext_buf)
{
    u64 crypto_hdr_offset = 0;
    uint32 read_sz = 0;
    SEC_EXTENSTION_CRYPTO ext_crypto;
    SEC_EXTENSTION_CRYPTO *ext_crypto_ptr = NULL;
    uint32 ext_crypto_size = sizeof(SEC_EXTENSTION_CRYPTO);    
    SEC_IMG_HEADER_V4 *file_img_hdr = (SEC_IMG_HEADER_V4*)file_img_hdr_p;

    /* get from seccfg's extension header */
    if (ASF_FILE_NULL == fp)
    {
        ext_crypto_ptr = (SEC_EXTENSTION_CRYPTO *)(ext_buf + img_if->ext_offset + img_if->header.v4.signature_length);

        return get_hash_size((SEC_CRYPTO_HASH_TYPE)ext_crypto_ptr->hash_type);
    }
    /* get from file's extension header */
    else
    {   
        memset(&ext_crypto, 0x00, ext_crypto_size);

        /* seek to crypto header offset */
        crypto_hdr_offset = sec_get_u64(file_img_hdr->image_length_high,file_img_hdr->image_length_low);
        crypto_hdr_offset += file_img_hdr->image_offset;
        crypto_hdr_offset += file_img_hdr->signature_length;

        ASF_SEEK_SET(fp, crypto_hdr_offset);
   
        /* read crypto header */
        if (ext_crypto_size != (read_sz = ASF_READ(fp, (char*)&ext_crypto, ext_crypto_size)))
        {
            SMSG(true,"[%s] read sz '%d' != '%d'\n",MOD,read_sz,ext_crypto_size);
            return -1;
        }
        
        return get_hash_size((SEC_CRYPTO_HASH_TYPE)ext_crypto.hash_type);
    }
}

/**************************************************************************
 *  FUNCTION To Get Signature Length
 **************************************************************************/
unsigned int sec_signfmt_get_signature_length_v4(SECURE_IMG_INFO_V3 *img_if, ASF_FILE fp, SEC_IMG_HEADER *file_img_hdr_p, char *ext_buf)
{
    uint32 crypto_hdr_offset = 0;
    uint32 read_sz = 0;
    SEC_EXTENSTION_CRYPTO ext_crypto;
    SEC_EXTENSTION_CRYPTO *ext_crypto_ptr = NULL;
    uint32 ext_crypto_size = sizeof(SEC_EXTENSTION_CRYPTO);
    SEC_IMG_HEADER_V4 *file_img_hdr = (SEC_IMG_HEADER_V4*)file_img_hdr_p;

    /* get from seccfg's extension header */
    if (ASF_FILE_NULL == fp)
    {        
        ext_crypto_ptr = (SEC_EXTENSTION_CRYPTO *)(ext_buf + img_if->ext_offset + img_if->header.v4.signature_length);

        return get_signature_size((SEC_CRYPTO_SIGNATURE_TYPE)ext_crypto_ptr->sig_type);
    }
    /* get from file's extension header */
    else
    {
        memset(&ext_crypto, 0x00, ext_crypto_size);

        /* seek to crypto header offset */
        crypto_hdr_offset = sec_get_u64(file_img_hdr->image_length_high,file_img_hdr->image_length_low);
        crypto_hdr_offset += file_img_hdr->image_offset;
        crypto_hdr_offset += file_img_hdr->signature_length;
        ASF_SEEK_SET(fp, crypto_hdr_offset);
        
        /* read crypto header */
        if (ext_crypto_size != (read_sz = ASF_READ(fp, (char*)&ext_crypto, ext_crypto_size)))
        {
            SMSG(true,"[%s] read sz '%d' != '%d'\n",MOD,read_sz,ext_crypto_size);
            return -1;
        }

        return get_signature_size((SEC_CRYPTO_SIGNATURE_TYPE)ext_crypto.sig_type);
    }
}

/**************************************************************************
 *  FUNCTION To Get Extension Length
 **************************************************************************/
unsigned int sec_signfmt_get_extension_length_v4(SECURE_IMG_INFO_V3 *img_if, ASF_FILE fp, SEC_IMG_HEADER *file_img_hdr_p)
{
    /* the extension include signature + hash + extension header */

    u64 file_size = 0;
    SEC_IMG_HEADER_V4 *file_img_hdr = (SEC_IMG_HEADER_V4*)file_img_hdr_p;
        
    /* get from seccfg's extension header */
    if (ASF_FILE_NULL == fp)
    {
        return img_if->ext_len;
    }
    /* get from file's extension header */
    else
    {
        ASF_SEEK_END(fp, 0);
        file_size = ASF_FILE_POS(fp);

        file_size -= SEC_IMG_HEADER_SIZE;
        file_size -= sec_get_u64(file_img_hdr->image_length_high,file_img_hdr->image_length_low);

        return (file_size & 0xFFFFFFFF);
    }
}


/**************************************************************************
 *  FUNCTION To Get Image Hash
 **************************************************************************/
int sec_signfmt_calculate_image_hash_v4(char* part_name, SECURE_IMG_INFO_V3 *img_if, char *final_hash_buf, 
    unsigned int hash_len, char *ext_buf)
{
    unsigned int ret = SEC_OK; 
    SEC_IMG_HEADER_V4 *img_hdr = (SEC_IMG_HEADER_V4 *)&img_if->header.v4;
    SEC_IMG_EXTENSTION_SET ext_set;
    uint32 ext_hdr_offset = 0;
    uint32 ext_hdr_len = 0;
    uchar *ext_hdr_buf = NULL;
    uint32 hash_size = 0;
    uint32 sig_size = 0;
    uint32 i = 0;
    uchar *cal_hash_buf = NULL;
    uint32 cal_hash_buf_len = 0;
    uchar *tmp_ptr = NULL;
    uchar *verify_data = NULL;
    uint32 verify_data_len = 0;
    uint32 real_chunk_size = 0;

    /* ======================== */
    /* init check */
    /* ======================== */
#if DUMP_MORE_FOR_DEBUG
    SMSG(sec_info.bMsg,"[%s] Dump header ============> START\n",MOD); 
    sec_signfmt_dump_buffer((uchar*)img_hdr,sizeof(SEC_IMG_HEADER_V4)); 
    SMSG(sec_info.bMsg,"[%s] Dump header ============> END\n",MOD); 
#endif

    if (SEC_IMG_MAGIC != img_hdr->magic_number)
    {
        SMSG(true,"[%s] magic number is invalid '0x%x'\n",MOD,img_hdr->magic_number);
        ret = ERR_SIGN_FORMAT_MAGIC_WRONG;
        goto _magic_wrong_err;
    }

    if (SEC_EXTENSION_MAGIC_V4 != img_hdr->ext_magic)
    {
        SMSG(true,"[%s] extension magic number is invalid '0x%x'\n",MOD,img_hdr->ext_magic);
        ret = ERR_SIGN_FORMAT_MAGIC_WRONG;
        goto _magic_wrong_err;
    }

    /* ======================== */
    /* search for extension header */
    /* ======================== */
    memset(&ext_set, 0x00, sizeof(SEC_IMG_EXTENSTION_SET));
    ext_hdr_offset = img_if->ext_offset + img_hdr->signature_length;
    ext_hdr_len = img_if->ext_len - img_hdr->signature_length;
    ext_hdr_buf = (uchar*)(ext_buf + ext_hdr_offset);
    if( SEC_OK != (ret = sec_signfmt_search_extension_v4(ext_hdr_buf, ext_hdr_len, &ext_set)) )
    {
        SMSG(true,"[%s] Image extension header not found\n",MOD); 
        goto _ext_hdr_search_fail;
    }
    hash_size = get_hash_size((SEC_CRYPTO_HASH_TYPE)ext_set.crypto->hash_type);
    sig_size = get_signature_size((SEC_CRYPTO_SIGNATURE_TYPE)ext_set.crypto->sig_type);

#if DUMP_MORE_FOR_DEBUG
    SMSG(sec_info.bMsg,"[%s] Dump ext hash value ============> START\n",MOD); 
    for(i=0;i<ext_set.frag->frag_count;i++)
    {
        SMSG(sec_info.bMsg,"[%s] Dump EXT hash [%d]\n",MOD,i);
        sec_signfmt_dump_buffer(ext_set.hash_only_64[i]->hash_data,hash_size);
    }
    SMSG(sec_info.bMsg,"[%s] Dump ext hash value ============> END\n",MOD); 
#endif    

    /* ======================== */
    /* calculate each hash by chunk */
    /* ======================== */
    cal_hash_buf_len = hash_size*ext_set.frag->frag_count;
    cal_hash_buf = (uchar*)ASF_MALLOC(cal_hash_buf_len);
    if (NULL == cal_hash_buf)
    {
        ret = ERR_FS_READ_BUF_ALLOCATE_FAIL;
        goto _malloc_cal_buf_fail;
    }
    memset(cal_hash_buf, 0x00, cal_hash_buf_len);
#if DUMP_MORE_FOR_DEBUG
    SMSG(sec_info.bMsg,"[%s] dump reset data\n",MOD); 
    sec_signfmt_dump_buffer(cal_hash_buf,cal_hash_buf_len);
#endif    
    tmp_ptr = cal_hash_buf;
#if DUMP_MORE_FOR_DEBUG
    SMSG(sec_info.bMsg,"[%s] Total cal hash length is %d\n",MOD,cal_hash_buf_len); 
#endif
    for(i=0;i<ext_set.frag->frag_count;i++)
    {
        memset(tmp_ptr, 0x00, hash_size);
        if(ext_set.frag->chunk_size == 0)
        {
            real_chunk_size = ext_set.hash_only_64[i]->hash_len_64 & 0x00000000FFFFFFFFULL;
        }
        else
        {
            real_chunk_size = ext_set.frag->chunk_size;
        }
        if(sec_signfmt_gen_hash_by_chunk_64(ASF_FILE_NULL, part_name, ext_set.hash_only_64[i]->hash_offset_64, ext_set.hash_only_64[i]->hash_len_64,
            tmp_ptr, ext_set.hash_only_64[i]->sub_type, real_chunk_size)!=0)
        {
            ret = ERR_SIGN_FORMAT_CAL_HASH_BY_CHUNK_FAIL;
            goto _gen_hash_by_chunk_fail;
        }

#if DUMP_MORE_FOR_DEBUG        
        SMSG(sec_info.bMsg,"[%s] Dump CAL hash right after: [%d], offset is 0x%x\n",MOD,i,tmp_ptr);
        sec_signfmt_dump_buffer(cal_hash_buf,cal_hash_buf_len);
#endif
        tmp_ptr += hash_size;
    }

#if DUMP_MORE_FOR_DEBUG        
    SMSG(sec_info.bMsg,"[%s] Dump CAL hash right after all done, offset is 0x%x\n",MOD,tmp_ptr);
    sec_signfmt_dump_buffer(cal_hash_buf,cal_hash_buf_len);
#endif


#if DUMP_MORE_FOR_DEBUG
    SMSG(sec_info.bMsg,"[%s] Dump cal hash value ============> START\n",MOD); 
    tmp_ptr = cal_hash_buf;
    for(i=0;i<ext_set.frag->frag_count;i++)
    {
        SMSG(true,"[%s] Dump CAL hash [%d]\n",MOD,i);
        sec_signfmt_dump_buffer(tmp_ptr,hash_size);
        tmp_ptr += hash_size;
    }
    SMSG(sec_info.bMsg,"[%s] Dump cal hash value ============> END\n",MOD); 
#endif

    /* ======================== */
    /* copy cal hash to extension header */
    /* ======================== */
    tmp_ptr = cal_hash_buf;
    for(i=0;i<ext_set.frag->frag_count;i++)
    {
        mcpy(ext_set.hash_only_64[i]->hash_data, tmp_ptr, hash_size);
        tmp_ptr += hash_size;
    }

    /* ======================== */
    /* compose final verify buffer */
    /* ======================== */
    verify_data_len = SEC_IMG_HEADER_SIZE+cal_hash_buf_len+ext_hdr_len;
    verify_data = (uchar*)ASF_MALLOC(verify_data_len);
    if (NULL == cal_hash_buf)
    {
        ret = ERR_FS_READ_BUF_ALLOCATE_FAIL;
        goto _malloc_verify_buf_fail;
    }
    tmp_ptr = verify_data;
    /* copy header */
    mcpy(tmp_ptr,img_hdr,SEC_IMG_HEADER_SIZE);
    tmp_ptr += SEC_IMG_HEADER_SIZE;
    /* copy cal hash */
    for(i=0;i<ext_set.frag->frag_count;i++)
    {
        mcpy(tmp_ptr,cal_hash_buf+i*hash_size,hash_size);
        tmp_ptr += hash_size;
    }
    /* copy extension header */
    mcpy(tmp_ptr,ext_hdr_buf,ext_hdr_len);

#if DUMP_MORE_FOR_DEBUG
    SMSG(sec_info.bMsg,"[%s] Dump verify data (%d):\n",MOD,verify_data_len); 
    sec_signfmt_dump_buffer(verify_data,verify_data_len); 
#endif

    /* ======================== */
    /* generate final hash */
    /* ======================== */

    /* hash */
    SMSG(sec_info.bMsg,"[%s] generate hash ... \n",MOD);    
    if(SEC_OK != (ret = sec_hash(verify_data, verify_data_len, (uchar*)final_hash_buf, hash_len )))
    {
        SMSG(true,"[%s] generate hash fail\n\n",MOD);
        ret = ERR_SIGN_FORMAT_GENERATE_HASH_FAIL;
        goto _hash_fail;
    }        

    /* ================== */    
    /* dump hash data     */
    /* ================== */        
    SMSG(sec_info.bMsg,"[%s] dump hash data\n",MOD);
    dump_buf((uchar*)final_hash_buf,hash_len);  

    SMSG(sec_info.bMsg,"[%s] generate hash pass\n\n",MOD);

_hash_fail:
    ASF_FREE(verify_data);
_malloc_verify_buf_fail:
_gen_hash_by_chunk_fail:
    ASF_FREE(cal_hash_buf);
_malloc_cal_buf_fail:
_ext_hdr_search_fail:    
_magic_wrong_err:    

    return ret;
}


//INTERESTING verifies modem file
/**************************************************************************
 *  FUNCTIONS To Verify File
 **************************************************************************/
int sec_signfmt_verify_file_v4(ASF_FILE fp, SEC_IMG_HEADER *file_img_hdr_p)
{
    uint32 ret = SEC_OK;
    uint32 final_hash_sig_len = 0;
    uchar *final_hash_sig_buf = NULL;
    uint32 read_sz = 0;
    SEC_IMG_EXTENSTION_SET ext_set;
    u64 ext_hdr_offset = 0;
    uint32 ext_hdr_len = 0;
    uchar *ext_hdr_buf = NULL;
    u64 file_size = 0;
    uint32 hash_size = 0;
    uint32 sig_size = 0;
    uint32 i = 0;
    uchar *cal_hash_buf = NULL;
    uint32 cal_hash_buf_len = 0;
    uchar *tmp_ptr = NULL;
    uchar *verify_data = NULL;
    uint32 verify_data_len = 0;
    uint32 real_chunk_size = 0;
    SEC_IMG_HEADER_V4 *file_img_hdr = (SEC_IMG_HEADER_V4*)file_img_hdr_p;
    u64 img_signature_offset = 0;
    
    /* ======================== */
    /* init check */
    /* ======================== */
#if DUMP_MORE_FOR_DEBUG
    SMSG(sec_info.bMsg,"[%s] Dump header ============> START\n",MOD); 
    sec_signfmt_dump_buffer((uchar*)file_img_hdr,sizeof(SEC_IMG_HEADER_V4)); 
    SMSG(sec_info.bMsg,"[%s] Dump header ============> END\n",MOD); 
#endif

    if (SEC_IMG_MAGIC != file_img_hdr->magic_number)
    {
        SMSG(true,"[%s] magic number is invalid '0x%x'\n",MOD,file_img_hdr->magic_number);
        ret = ERR_SIGN_FORMAT_MAGIC_WRONG;
        goto _magic_wrong_err;
    }

    if (SEC_EXTENSION_MAGIC_V4 != file_img_hdr->ext_magic)
    {
        SMSG(true,"[%s] extension magic number is invalid '0x%x'\n",MOD,file_img_hdr->ext_magic);
        ret = ERR_SIGN_FORMAT_MAGIC_WRONG;
        goto _magic_wrong_err;
    }
    
    /* ======================== */
    /* locate final signature and hash */
    /* ======================== */
    final_hash_sig_len = file_img_hdr->signature_length;
    final_hash_sig_buf = (uchar*)ASF_MALLOC(final_hash_sig_len);
    if (NULL == final_hash_sig_buf)
    {
        ret = ERR_FS_READ_BUF_ALLOCATE_FAIL;
        goto _malloc_hash_sig_fail;
    }
    img_signature_offset = sec_get_u64(file_img_hdr->image_length_high, file_img_hdr->image_length_low);
    img_signature_offset += file_img_hdr->image_offset;
    ASF_SEEK_SET(fp, img_signature_offset);

    if (final_hash_sig_len != (read_sz = ASF_READ(fp, final_hash_sig_buf, final_hash_sig_len)))
    {
        SMSG(true,"[%s] read size '%d' != '%d'\n",MOD,read_sz,final_hash_sig_len);
        ret = ERR_FS_READ_SIZE_FAIL;
        goto _read_hash_sig_fail;
    }

#if DUMP_MORE_FOR_DEBUG
    SMSG(sec_info.bMsg,"[%s] Dump sign and hash value ============> START\n",MOD); 
    sec_signfmt_dump_buffer(final_hash_sig_buf,final_hash_sig_len); 
    SMSG(sec_info.bMsg,"[%s] Dump sign and hash value ============> END\n",MOD); 
#endif

    /* read file size */
    ASF_SEEK_END(fp, 0);
    file_size = ASF_FILE_POS(fp);

    /* ======================== */
    /* search for extension header */
    /* ======================== */
    memset(&ext_set, 0x00, sizeof(SEC_IMG_EXTENSTION_SET));
    ext_hdr_offset = sec_get_u64(file_img_hdr->image_length_high, file_img_hdr->image_length_low) + file_img_hdr->image_offset + file_img_hdr->signature_length;
    ext_hdr_len = (file_size - ext_hdr_offset) & 0xFFFFFFFF;
    ext_hdr_buf = (uchar*)ASF_MALLOC(ext_hdr_len);
    if (NULL == ext_hdr_buf)
    {
        ret = ERR_FS_READ_BUF_ALLOCATE_FAIL;
        goto _malloc_ext_hdr_fail;
    }
    ASF_SEEK_SET(fp, ext_hdr_offset);

    if (ext_hdr_len != (read_sz = ASF_READ(fp, ext_hdr_buf, ext_hdr_len)))
    {
        SMSG(true,"[%s] read size '%d' != '%d'\n",MOD,read_sz,ext_hdr_len);
        ret = ERR_FS_READ_SIZE_FAIL;
        goto _read_ext_hdr_fail;
    }
    if( SEC_OK != (ret = sec_signfmt_search_extension_v4(ext_hdr_buf, ext_hdr_len, &ext_set)) )
    {
        SMSG(true,"[%s] Image extension header not found\n",MOD); 
        goto _ext_hdr_search_fail;
    }

    hash_size = get_hash_size((SEC_CRYPTO_HASH_TYPE)ext_set.crypto->hash_type);
    sig_size = get_signature_size((SEC_CRYPTO_SIGNATURE_TYPE)ext_set.crypto->sig_type);

#if DUMP_MORE_FOR_DEBUG
    SMSG(sec_info.bMsg,"[%s] Dump ext hash value ============> START\n",MOD); 
    for(i=0;i<ext_set.frag->frag_count;i++)
    {
        SMSG(sec_info.bMsg,"[%s] Dump EXT hash [%d]\n",MOD,i);
        sec_signfmt_dump_buffer(ext_set.hash_only_64[i]->hash_data,hash_size);
    }
    SMSG(sec_info.bMsg,"[%s] Dump ext hash value ============> END\n",MOD); 
#endif

    /* ======================== */
    /* calculate each hash by chunk */
    /* ======================== */
    cal_hash_buf_len = hash_size*ext_set.frag->frag_count;
    cal_hash_buf = (uchar*)ASF_MALLOC(cal_hash_buf_len);
    if (NULL == cal_hash_buf)
    {
        ret = ERR_FS_READ_BUF_ALLOCATE_FAIL;
        goto _malloc_cal_buf_fail;
    }
    memset(cal_hash_buf, 0x00, cal_hash_buf_len);
#if DUMP_MORE_FOR_DEBUG
    SMSG(sec_info.bMsg,"[%s] dump reset data\n",MOD); 
    sec_signfmt_dump_buffer(cal_hash_buf,cal_hash_buf_len);
#endif    
    tmp_ptr = cal_hash_buf;
#if DUMP_MORE_FOR_DEBUG
    SMSG(sec_info.bMsg,"[%s] Total cal hash length is %d\n",MOD,cal_hash_buf_len); 
#endif
    for(i=0;i<ext_set.frag->frag_count;i++)
    {
        memset(tmp_ptr, 0x00, hash_size);
        if(ext_set.frag->chunk_size == 0)
        {
            real_chunk_size = ext_set.hash_only_64[i]->hash_len_64 & 0x00000000FFFFFFFFULL;
        }
        else
        {
            real_chunk_size = ext_set.frag->chunk_size;
        } 
        if(sec_signfmt_gen_hash_by_chunk_64(fp, NULL, SEC_IMG_HEADER_SIZE+ext_set.hash_only_64[i]->hash_offset_64, ext_set.hash_only_64[i]->hash_len_64,
            tmp_ptr, ext_set.hash_only_64[i]->sub_type, real_chunk_size)!=0)
        {
            ret = ERR_SIGN_FORMAT_CAL_HASH_BY_CHUNK_FAIL;
            goto _gen_hash_by_chunk_fail;
        }

#if DUMP_MORE_FOR_DEBUG        
        SMSG(sec_info.bMsg,"[%s] Dump CAL hash right after: [%d], offset is 0x%x\n",MOD,i,tmp_ptr);
        sec_signfmt_dump_buffer(cal_hash_buf,cal_hash_buf_len);
#endif
        tmp_ptr += hash_size;
    }

#if DUMP_MORE_FOR_DEBUG        
    SMSG(sec_info.bMsg,"[%s] Dump CAL hash right after all done, offset is 0x%x\n",MOD,tmp_ptr);
    sec_signfmt_dump_buffer(cal_hash_buf,cal_hash_buf_len);
#endif


#if DUMP_MORE_FOR_DEBUG
    SMSG(sec_info.bMsg,"[%s] Dump cal hash value ============> START\n",MOD); 
    tmp_ptr = cal_hash_buf;
    for(i=0;i<ext_set.frag->frag_count;i++)
    {
        SMSG(sec_info.bMsg,"[%s] Dump CAL hash [%d]\n",MOD,i);
        sec_signfmt_dump_buffer(tmp_ptr,hash_size);
        tmp_ptr += hash_size;
    }
    SMSG(sec_info.bMsg,"[%s] Dump cal hash value ============> END\n",MOD); 
#endif

    /* ======================== */
    /* compose final verify buffer */
    /* ======================== */
    verify_data_len = SEC_IMG_HEADER_SIZE+cal_hash_buf_len+ext_hdr_len;
    verify_data = (uchar*)ASF_MALLOC(verify_data_len);
    if (NULL == cal_hash_buf)
    {
        ret = ERR_FS_READ_BUF_ALLOCATE_FAIL;
        goto _malloc_verify_buf_fail;
    }
    tmp_ptr = verify_data;
    /* copy header */
    mcpy(tmp_ptr,file_img_hdr,SEC_IMG_HEADER_SIZE);
    tmp_ptr += SEC_IMG_HEADER_SIZE;
    /* copy cal hash */
    for(i=0;i<ext_set.frag->frag_count;i++)
    {
        mcpy(tmp_ptr,cal_hash_buf+i*hash_size,hash_size);
        tmp_ptr += hash_size;
    }
    /* copy extension header */
    mcpy(tmp_ptr,ext_hdr_buf,ext_hdr_len);

#if DUMP_MORE_FOR_DEBUG
    SMSG(sec_info.bMsg,"[%s] Dump verify data (%d):\n",MOD,verify_data_len); 
    sec_signfmt_dump_buffer(verify_data,verify_data_len); 
#endif
#if DUMP_MORE_FOR_DEBUG
    SMSG(sec_info.bMsg,"[%s] Dump signature data (%d):\n",MOD,sig_size); 
    sec_signfmt_dump_buffer(final_hash_sig_buf,sig_size); 
#endif

    osal_verify_lock();

    /* ======================== */
    /* verify buffer */
    /* ======================== */
    SMSG(sec_info.bMsg,"[%s] verify (lock)... \n",MOD);    
    if(SEC_OK != (ret = sec_verify(verify_data, verify_data_len, final_hash_sig_buf, sig_size )))
    {
        osal_verify_unlock();    
        SMSG(true,"[%s] verify fail (unlock), ret is %d\n\n",MOD,ret);
        goto _verify_fail;
    }        
    
    osal_verify_unlock();    

    SMSG(sec_info.bMsg,"[%s] verify pass (unlock)\n\n",MOD);

_verify_fail:
    ASF_FREE(verify_data);
_malloc_verify_buf_fail:
_gen_hash_by_chunk_fail:
    ASF_FREE(cal_hash_buf);
_malloc_cal_buf_fail:
_ext_hdr_search_fail:
_read_ext_hdr_fail:
    ASF_FREE(ext_hdr_buf);
_malloc_ext_hdr_fail:
_read_hash_sig_fail:
    ASF_FREE(final_hash_sig_buf);
_malloc_hash_sig_fail:
_magic_wrong_err:    

    return ret;
}