Namespace: Checksum

Methods

---

<static> run_fletcher16(input, args)

Fletcher-16 Checksum operation.

Parameters:

Name	Type	Description
input	byte_array
args	Array.<Object>

Source:

• operations/Checksum.js, line 19

Returns:

Type

string

---

<static> run_adler32(input, args)

Adler-32 Checksum operation.

Parameters:

Name	Type	Description
input	byte_array
args	Array.<Object>

Source:

• operations/Checksum.js, line 39

Returns:

Type

string

---

<static> run_crc32(input, args)

CRC-32 Checksum operation.

Parameters:

Name	Type	Description
input	byte_array
args	Array.<Object>

Source:

• operations/Checksum.js, line 63

Returns:

Type

string

---

<static> run_tcp_ip(input, args)

TCP/IP Checksum operation.

Parameters:

Name	Type	Description
input	byte_array
args	Array.<Object>

Author:

• <p>GCHQ Contributor [1]</p>

Source:

• operations/Checksum.js, line 92

Returns:

Type

string

Example

// returns '3f2c'
Checksum.run_tcp_ip([0x45,0x00,0x00,0x87,0xa3,0x1b,0x40,0x00,0x40,0x06,
                     0x00,0x00,0xac,0x11,0x00,0x04,0xac,0x11,0x00,0x03])

// returns 'a249'
Checksum.run_tcp_ip([0x45,0x00,0x01,0x11,0x3f,0x74,0x40,0x00,0x40,0x06,
                     0x00,0x00,0xac,0x11,0x00,0x03,0xac,0x11,0x00,0x04])

---

<private, static> _gen_crc_table()

Generates a CRC table for use with CRC checksums.

Source:

• operations/Checksum.js, line 115

Returns:

Type

array