Authenticity Boundary

Verify Toy Signature

Verify a toy raw RSA signature by raising it to e. This is toy arithmetic only, not deployable security.

Example

Verify a toy raw RSA signature by raising it to e.

highlighted = computed this step

Step 1 — Set up

Set up the exact toy cryptography values.

signature, e, n(2, 3, 55)\begin{array}{c|c}\text{signature, e, n}&\text{(2, 3, 55)}\end{array}

Step 2 — Representative

Compute the highlighted cryptography value.

s power e mod n8\begin{array}{c|c}\text{s power e mod n}&\hlmath{\text{8}}\end{array}

Step 3 — Verdict

Compute the highlighted cryptography value.

verdictvalid toy signature\begin{array}{c|c}\text{verdict}&\hlmath{\text{valid toy signature}}\end{array}
cryptography The values in this lesson are deliberately tiny so every modular arithmetic step can be checked exactly.