README
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le-cert-core
le-cert-core is a simple ACME (Let's Encrypt) client library written in pure Go.
This project began as a personal journey to deeply understand the ACME protocol, as defined in RFC 8555. I had previously developed an ACME client using the official golang.org/x/crypto/acme package, but wanted to explore the protocol at a lower level. To achieve that, I built this implementation completely from scratch — including custom JWS (JSON Web Signature) handling — without relying on any third-party libraries or existing ACME implementations.
You can find a sample client in the example/ folder — the main.go file demonstrates how to use this library to register an account, complete a challenge, and request a certificate.
License
This project is open source and available under the MIT License.
Documentation
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Index ¶
- Constants
- func CreateCsr(name string, dom []string) (*csrDer, error)
- func CreateKeys() keys
- func GetDir(url string) (*directory, error)
- func GetOrderResp() *orderResp
- func JwsPayload(pload any, pbkey ecdsa.PrivateKey, nonce string, url string, kid string) ([]byte, error)
- func Loadkeys(filename string) (keys, error)
- func NewAccount(mailaddr string, tos bool) *account
- func NewOrder(domains []string) order
- func ThumbPrint(pbkey ecdsa.PublicKey) string
Constants ¶
const Prod string = "https://acme-v02.api.letsencrypt.org/directory"
const Stag string = "https://acme-staging-v02.api.letsencrypt.org/directory"
Variables ¶
This section is empty.
Functions ¶
func GetDir ¶
makes gets requests to the acme server use "Stag" for staging url and "Prod" for production url).
func GetOrderResp ¶
func GetOrderResp() *orderResp
func JwsPayload ¶
Types ¶
This section is empty.
Source Files
Directories