Produce & verify TrueLayer API requests signatures
Project description
truelayer-signing
Python package to produce & verify TrueLayer API requests signatures.
Install
pip install truelayer-signing
Generating a signature
tl_signature = sign_with_pem(KID, PRIVATE_KEY) \
.set_method(HttpMethod.POST) \
.set_path(path) \
.add_header("Idempotency-Key", idempotency_key) \
.set_body(body) \
.sign()
See full example.
Verifying webhooks
The verify_with_jwks
function may be used to verify webhook Tl-Signature
header signatures.
# `jku` field is included in webhook signatures
jws_header = extract_jws_header(webhook_signature).jku
# check `jku` is an allowed TrueLayer url & fetch jwks JSON (not provided by this lib)
ensure_jku_allowed(jku)
jwks = fetch_jwks(jku)
# jwks may be used directly to verify a signature
verify_with_jwks(jwks, jws_header) \
.set_method(HttpMethod.POST) \
.set_path(path) \
.add_headers(headers) \
.set_body(body) \
.verify(tl_signature)
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