Allow ACME account keys to be configured via config file to maintain
the same Let's Encrypt account across deployments. Add DecodePrivateKey
function with PEM block type constants to support EC, RSA, and PKCS8
key formats. When no account key is provided, fall back to generating
a new one with a warning.
Signed-off-by: Bryan Frimin <bryan@getprobo.com>
ECDSA's Sign() method expects already-hashed data when a hash function
is specified. The test was incorrectly passing unhashed data with
crypto.SHA256, causing signature operations to fail.
Signed-off-by: Bryan Frimin <bryan@getprobo.com>
