pub(crate) fn decode_signing_key(
input: &SecretString,
) -> Result<SecretSlice<u8>, AuthenticationError>Expand description
Decodes boundary key material and enforces the RFC 7518 HS256 minimum.
Returns AuthenticationError::InvalidBase64Encoding for malformed input
or AuthenticationError::KeyTooShort below HS256_MIN_KEY_BYTES.