Standard test vector
CRC implementations are commonly verified with the ASCII input 123456789.
- Input format
- ASCII
- Input
- 123456789
- Expected CRC
- 0xBD0BE338
- Residue
- 0x00000000
CRC-32 / XFER
Width32-bitRefInNoRefOutNoInput data9 bytesUTF-8 bytesText is converted to UTF-8 bytes.
Standard test string
Result
Similar CRC Algorithms
5 modelsBrowse all algorithms
Result is calculated from the current input. Check is the published verification value for the standard input 123456789. Click another algorithm to view its detail page.
CRC-32 / AIXM
32-bitPoly 0x814141ABIn No Out No
Result
0x3010BF7F
Check
0x3010BF7F
CRC-32 / BZIP2
32-bitPoly 0x04C11DB7In No Out No
Result
0xFC891918
Check
0xFC891918
CRC-32 / CKSUM
32-bitPoly 0x04C11DB7In No Out No
Result
0x765E7680
Check
0x765E7680
CRC-32 / MPEG-2
32-bitPoly 0x04C11DB7In No Out No
Result
0x0376E6E7
Check
0x0376E6E7
CRC-32 / XFER Current
32-bitPoly 0x000000AFIn No Out No
Result
0xBD0BE338
Check
0xBD0BE338
CRC Lookup Table
CRC-32 / XFER · Poly 0x000000AF · Init 0x00000000 · XorOut 0x00000000 · 256 entries
0x000000000x000000AF0x0000015E0x000001F10x000002BC0x000002130x000003E20x0000034D0x000005780x000005D70x000004260x000004890x000007C40x0000076B0x0000069A0x00000635
0x00000AF00x00000A5F0x00000BAE0x00000B010x0000084C0x000008E30x000009120x000009BD0x00000F880x00000F270x00000ED60x00000E790x00000D340x00000D9B0x00000C6A0x00000CC5
0x000015E00x0000154F0x000014BE0x000014110x0000175C0x000017F30x000016020x000016AD0x000010980x000010370x000011C60x000011690x000012240x0000128B0x0000137A0x000013D5
0x00001F100x00001FBF0x00001E4E0x00001EE10x00001DAC0x00001D030x00001CF20x00001C5D0x00001A680x00001AC70x00001B360x00001B990x000018D40x0000187B0x0000198A0x00001925
0x00002BC00x00002B6F0x00002A9E0x00002A310x0000297C0x000029D30x000028220x0000288D0x00002EB80x00002E170x00002FE60x00002F490x00002C040x00002CAB0x00002D5A0x00002DF5
0x000021300x0000219F0x0000206E0x000020C10x0000238C0x000023230x000022D20x0000227D0x000024480x000024E70x000025160x000025B90x000026F40x0000265B0x000027AA0x00002705
0x00003E200x00003E8F0x00003F7E0x00003FD10x00003C9C0x00003C330x00003DC20x00003D6D0x00003B580x00003BF70x00003A060x00003AA90x000039E40x0000394B0x000038BA0x00003815
0x000034D00x0000347F0x0000358E0x000035210x0000366C0x000036C30x000037320x0000379D0x000031A80x000031070x000030F60x000030590x000033140x000033BB0x0000324A0x000032E5
0x000057800x0000572F0x000056DE0x000056710x0000553C0x000055930x000054620x000054CD0x000052F80x000052570x000053A60x000053090x000050440x000050EB0x0000511A0x000051B5
0x00005D700x00005DDF0x00005C2E0x00005C810x00005FCC0x00005F630x00005E920x00005E3D0x000058080x000058A70x000059560x000059F90x00005AB40x00005A1B0x00005BEA0x00005B45
0x000042600x000042CF0x0000433E0x000043910x000040DC0x000040730x000041820x0000412D0x000047180x000047B70x000046460x000046E90x000045A40x0000450B0x000044FA0x00004455
0x000048900x0000483F0x000049CE0x000049610x00004A2C0x00004A830x00004B720x00004BDD0x00004DE80x00004D470x00004CB60x00004C190x00004F540x00004FFB0x00004E0A0x00004EA5
0x00007C400x00007CEF0x00007D1E0x00007DB10x00007EFC0x00007E530x00007FA20x00007F0D0x000079380x000079970x000078660x000078C90x00007B840x00007B2B0x00007ADA0x00007A75
0x000076B00x0000761F0x000077EE0x000077410x0000740C0x000074A30x000075520x000075FD0x000073C80x000073670x000072960x000072390x000071740x000071DB0x0000702A0x00007085
0x000069A00x0000690F0x000068FE0x000068510x00006B1C0x00006BB30x00006A420x00006AED0x00006CD80x00006C770x00006D860x00006D290x00006E640x00006ECB0x00006F3A0x00006F95
0x000063500x000063FF0x0000620E0x000062A10x000061EC0x000061430x000060B20x0000601D0x000066280x000066870x000067760x000067D90x000064940x0000643B0x000065CA0x00006565
CRC Source Code
CRC-32 / XFER · Poly 0x000000AF · Init 0x00000000 · XorOut 0x00000000 · C · 56 lines
/*
* Model: CRC-32 / XFER (32-bit)
* Poly: 0x000000AF, Init: 0x00000000, XorOut: 0x00000000
* CRC Table C Source Code & Lookup Table Generator
*/
#include <stdint.h>
#include <stddef.h>
const uint32_t crc_table[256] = {
0x00000000, 0x000000AF, 0x0000015E, 0x000001F1, 0x000002BC, 0x00000213, 0x000003E2, 0x0000034D,
0x00000578, 0x000005D7, 0x00000426, 0x00000489, 0x000007C4, 0x0000076B, 0x0000069A, 0x00000635,
0x00000AF0, 0x00000A5F, 0x00000BAE, 0x00000B01, 0x0000084C, 0x000008E3, 0x00000912, 0x000009BD,
0x00000F88, 0x00000F27, 0x00000ED6, 0x00000E79, 0x00000D34, 0x00000D9B, 0x00000C6A, 0x00000CC5,
0x000015E0, 0x0000154F, 0x000014BE, 0x00001411, 0x0000175C, 0x000017F3, 0x00001602, 0x000016AD,
0x00001098, 0x00001037, 0x000011C6, 0x00001169, 0x00001224, 0x0000128B, 0x0000137A, 0x000013D5,
0x00001F10, 0x00001FBF, 0x00001E4E, 0x00001EE1, 0x00001DAC, 0x00001D03, 0x00001CF2, 0x00001C5D,
0x00001A68, 0x00001AC7, 0x00001B36, 0x00001B99, 0x000018D4, 0x0000187B, 0x0000198A, 0x00001925,
0x00002BC0, 0x00002B6F, 0x00002A9E, 0x00002A31, 0x0000297C, 0x000029D3, 0x00002822, 0x0000288D,
0x00002EB8, 0x00002E17, 0x00002FE6, 0x00002F49, 0x00002C04, 0x00002CAB, 0x00002D5A, 0x00002DF5,
0x00002130, 0x0000219F, 0x0000206E, 0x000020C1, 0x0000238C, 0x00002323, 0x000022D2, 0x0000227D,
0x00002448, 0x000024E7, 0x00002516, 0x000025B9, 0x000026F4, 0x0000265B, 0x000027AA, 0x00002705,
0x00003E20, 0x00003E8F, 0x00003F7E, 0x00003FD1, 0x00003C9C, 0x00003C33, 0x00003DC2, 0x00003D6D,
0x00003B58, 0x00003BF7, 0x00003A06, 0x00003AA9, 0x000039E4, 0x0000394B, 0x000038BA, 0x00003815,
0x000034D0, 0x0000347F, 0x0000358E, 0x00003521, 0x0000366C, 0x000036C3, 0x00003732, 0x0000379D,
0x000031A8, 0x00003107, 0x000030F6, 0x00003059, 0x00003314, 0x000033BB, 0x0000324A, 0x000032E5,
0x00005780, 0x0000572F, 0x000056DE, 0x00005671, 0x0000553C, 0x00005593, 0x00005462, 0x000054CD,
0x000052F8, 0x00005257, 0x000053A6, 0x00005309, 0x00005044, 0x000050EB, 0x0000511A, 0x000051B5,
0x00005D70, 0x00005DDF, 0x00005C2E, 0x00005C81, 0x00005FCC, 0x00005F63, 0x00005E92, 0x00005E3D,
0x00005808, 0x000058A7, 0x00005956, 0x000059F9, 0x00005AB4, 0x00005A1B, 0x00005BEA, 0x00005B45,
0x00004260, 0x000042CF, 0x0000433E, 0x00004391, 0x000040DC, 0x00004073, 0x00004182, 0x0000412D,
0x00004718, 0x000047B7, 0x00004646, 0x000046E9, 0x000045A4, 0x0000450B, 0x000044FA, 0x00004455,
0x00004890, 0x0000483F, 0x000049CE, 0x00004961, 0x00004A2C, 0x00004A83, 0x00004B72, 0x00004BDD,
0x00004DE8, 0x00004D47, 0x00004CB6, 0x00004C19, 0x00004F54, 0x00004FFB, 0x00004E0A, 0x00004EA5,
0x00007C40, 0x00007CEF, 0x00007D1E, 0x00007DB1, 0x00007EFC, 0x00007E53, 0x00007FA2, 0x00007F0D,
0x00007938, 0x00007997, 0x00007866, 0x000078C9, 0x00007B84, 0x00007B2B, 0x00007ADA, 0x00007A75,
0x000076B0, 0x0000761F, 0x000077EE, 0x00007741, 0x0000740C, 0x000074A3, 0x00007552, 0x000075FD,
0x000073C8, 0x00007367, 0x00007296, 0x00007239, 0x00007174, 0x000071DB, 0x0000702A, 0x00007085,
0x000069A0, 0x0000690F, 0x000068FE, 0x00006851, 0x00006B1C, 0x00006BB3, 0x00006A42, 0x00006AED,
0x00006CD8, 0x00006C77, 0x00006D86, 0x00006D29, 0x00006E64, 0x00006ECB, 0x00006F3A, 0x00006F95,
0x00006350, 0x000063FF, 0x0000620E, 0x000062A1, 0x000061EC, 0x00006143, 0x000060B2, 0x0000601D,
0x00006628, 0x00006687, 0x00006776, 0x000067D9, 0x00006494, 0x0000643B, 0x000065CA, 0x00006565
};
uint32_t calculate_crc(const uint8_t *data, size_t length) {
uint32_t crc = 0x00000000;
for (size_t i = 0; i < length; i++) {
#if 0
uint8_t idx = (uint8_t)(crc ^ data[i]);
crc = (crc >> 8) ^ crc_table[idx];
#else
uint8_t idx = (uint8_t)((crc >> 24) ^ data[i]);
crc = (crc << 8) ^ crc_table[idx];
#endif
}
return crc ^ 0x00000000;
}About CRC-32/XFER
CRC-32/XFER is a historical non-reflected CRC-32 model.
CRC-32/XFER is a 32-bit CRC model defined by polynomial 0x000000AF, an initial register value of 0x00000000, and final XOR 0x00000000. It uses normal, non-reflected input and output processing.
Documented application context for this model includes XFER, Legacy protocols, Data transfer. The calculator above applies this exact parameter set to the current input; the published Check value below is instead the fixed verification result for ASCII 123456789.
Model characteristics
A model is identified by its complete parameter set, not its polynomial alone.
- Bit order
- Normal
- Register start
- 0x00000000
- Final XOR
- 0x00000000
- Published check
- 0xBD0BE338
Implementation checks for CRC-32/XFER
- Use a 32-bit register and polynomial 0x000000AF.
- Initialize the register to 0x00000000 and use XorOut 0x00000000 exactly as listed; changing either value defines a different model.
- Verify the implementation with ASCII “123456789”; the expected result is 0xBD0BE338.
Continue with the main calculator, browse the algorithm catalog, compare models in the Algorithm Reference section, or generate a lookup table.
Complete CRC-32/XFER parameters
| Parameter | Value | Meaning | Reference |
|---|---|---|---|
| Width | 32 bits | CRC register and result width | Read guide |
| Poly | 0x000000AF | Generator polynomial without the leading term | Read guide |
| Init | 0x00000000 | Initial CRC register value | Read guide |
| RefIn | No | Reflect each input byte before processing | Read guide |
| RefOut | No | Reflect the register before XOR Out | Read guide |
| XorOut | 0x00000000 | Final value XORed with the CRC register | Read guide |
| Check | 0xBD0BE338 | CRC of ASCII “123456789” | Read guide |
| Residue | 0x00000000 | Expected residue after appending a valid CRC | Read guide |
AliasesXFER CRC-32
Where CRC-32/XFER is used
- 01XFER
- 02Legacy protocols
- 03Data transfer
CRC-32/XFER FAQ
What is the check value for CRC-32/XFER?
For the standard ASCII test input 123456789, the check value of CRC-32/XFER is 0xBD0BE338.
What polynomial does CRC-32/XFER use?
CRC-32/XFER uses the 32-bit polynomial 0x000000AF.
Does CRC-32/XFER use reflected input and output?
For CRC-32/XFER, RefIn is No and RefOut is No.
What is CRC-32/XFER commonly confused with?
The closest published model by parameter overlap is CRC-32/AIXM, differing from CRC-32/XFER in polynomial.