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refactor: catch type error when decoding base64url signature #569

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merged 4 commits into from
Sep 1, 2023
Merged

refactor: catch type error when decoding base64url signature #569

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bd0eeb1
Catch type error when decoding signature
lboynton Sep 1, 2023
6eb197e
simplify
lboynton Sep 1, 2023
72d6679
Throw more appropriate error
lboynton Sep 1, 2023
edc54e4
fix scoping
lboynton Sep 1, 2023
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7 changes: 6 additions & 1 deletion src/jws/flattened/verify.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -169,7 +169,12 @@ export async function flattenedVerify(
encoder.encode('.'),
typeof jws.payload === 'string' ? encoder.encode(jws.payload) : jws.payload,
)
const signature = base64url(jws.signature)
let signature: Uint8Array
try {
signature = base64url(jws.signature)
} catch {
throw new JWSInvalid('Failed to parse the base64url encoded signature')
}
const verified = await verify(alg, key, signature, data)

if (!verified) {
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