16-bit summation checksum. Adds all bytes and keeps only the lowest 16 bits (modulo 65536). Better error detection than Sum-8.
| Property | Value |
|---|---|
| Category | Checksums |
| Sub-category | Summation |
| Security status | 🎓 Educational Only |
| Complexity | Beginner |
| Inventor | Unknown |
| Year | 1960 |
| Origin | Not specified |
| Source | algorithms/checksum/sum-checksum.js |
Status: 🎓 Educational Only
No vulnerabilities are recorded for this implementation.
2 vectors ship with this algorithm and run in the test suite. Byte values are hexadecimal.
Vector 1 — Simple sequence
Source: Sum16 calculation
| Field | Value |
|---|---|
input |
01020304 |
expected |
000a |
Vector 2 — Multi-byte sum
Source: Sum16 test
| Field | Value |
|---|---|
input |
ffffff |
expected |
02fd |