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proc to func in engine authentication (#5718)

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tersec 2024-01-08 21:12:58 +00:00 committed by GitHub
parent 401d6bac91
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1 changed files with 4 additions and 4 deletions
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8
beacon_chain/spec/engine_authentication.nim
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@ -23,7 +23,7 @@ export rand, results
const
JWT_SECRET_LEN = 32
proc base64urlEncode(x: auto): string =
func base64urlEncode(x: auto): string =
# The only strings this gets are internally generated, and don't have
# encoding quirks.
base64.encode(x, safe = true).replace("=", "")
@ -41,7 +41,7 @@ func getIatToken*(time: int64): JsonNode =
# an example of an iat claim: {"iat": 1371720939}
%* {"iat": time}
proc getSignedToken*(key: openArray[byte], payload: string): string =
func getSignedToken*(key: openArray[byte], payload: string): string =
# https://github.com/ethereum/execution-apis/blob/v1.0.0-beta.3/src/engine/authentication.md#jwt-specifications
# "The execution layer client **MUST** support at least the following `alg`
# `HMAC + SHA256` (`HS256`)"
@ -57,10 +57,10 @@ proc getSignedToken*(key: openArray[byte], payload: string): string =
signingInput & "." & base64urlEncode(sha256.hmac(key, signingInput).data)
proc getSignedIatToken*(key: openArray[byte], time: int64): string =
func getSignedIatToken*(key: openArray[byte], time: int64): string =
getSignedToken(key, $getIatToken(time))
proc parseJwtTokenValue*(input: string): Result[seq[byte], cstring] =
func parseJwtTokenValue*(input: string): Result[seq[byte], cstring] =
# Secret JWT key is parsed in constant time using nimcrypto:
# https://github.com/cheatfate/nimcrypto/pull/44
let secret = utils.fromHex(input)