Internet Assigned Numbers Authority
Automated Certificate Management Environment (ACME) Protocol
Created
2019-01-02
Last Updated
2025-07-14
Available Formats
[IMG]
XML [IMG]
HTML [IMG]
Plain text
Registries Included Below
??ACME Account Object Fields
??ACME Order Object Fields
??ACME Authorization Object Fields
??ACME Error Types
??ACME Resource Types
??ACME Directory Metadata Fields
??ACME Identifier Types
??ACME Validation Methods
??ACME Order Auto-Renewal Fields
??ACME Directory Metadata Auto-Renewal Fields
??STAR Delegation CSR Template Extensions
??ACME Authority Token Challenge Types
??ACME RenewalInfo Object Fields
ACME Account Object Fields
Registration Procedure(s)
Specification Required
Expert(s)
Richard Barnes, Aaron Gable
Reference
[RFC8555]
Available Formats
[IMG]
CSV
Field Name Field Type Requests Reference
status string new, account [RFC8555]
contact array of string new, account [RFC8555]
externalAccountBinding object new [RFC8555]
termsOfServiceAgreed boolean new [RFC8555]
onlyReturnExisting boolean new [RFC8555]
orders string none [RFC8555]
delegations string none [RFC9115]
ACME Order Object Fields
Registration Procedure(s)
Specification Required
Expert(s)
Richard Barnes, Aaron Gable
Reference
[RFC8555]
Available Formats
[IMG]
CSV
Field Name Field Type Configurable Reference
status string false [RFC8555]
expires string false [RFC8555]
identifiers array of object true [RFC8555]
notBefore string true [RFC8555]
notAfter string true [RFC8555]
error string false [RFC8555]
authorizations array of string false [RFC8555]
finalize string false [RFC8555]
certificate string false [RFC8555]
auto-renewal object true [RFC8739]
star-certificate string false [RFC8739]
allow-certificate-get boolean true [RFC9115]
delegation string true [RFC9115]
replaces string true [RFC9773]
ACME Authorization Object Fields
Registration Procedure(s)
Specification Required
Expert(s)
Richard Barnes, Aaron Gable
Reference
[RFC8555]
Available Formats
[IMG]
CSV
Field Name Field Type Configurable Reference
identifier object true [RFC8555]
status string false [RFC8555]
expires string false [RFC8555]
challenges array of object false [RFC8555]
wildcard boolean false [RFC8555]
subdomainAuthAllowed boolean false [RFC9444]
ACME Error Types
Registration Procedure(s)
Specification Required
Expert(s)
Richard Barnes, Aaron Gable
Reference
[RFC8555]
Available Formats
[IMG]
CSV
Type Description Reference
accountDoesNotExist The request specified an account that does not exist [RFC8555]
alreadyRevoked The request specified a certificate to be revoked that has already been revoked [RFC8555]
badCSR The CSR is unacceptable (e.g., due to a short key) [RFC8555]
badNonce The client sent an unacceptable anti-replay nonce [RFC8555]
badPublicKey The JWS was signed by a public key the server does not support [RFC8555]
badRevocationReason The revocation reason provided is not allowed by the server [RFC8555]
badSignatureAlgorithm The JWS was signed with an algorithm the server does not support [RFC8555]
caa Certification Authority Authorization (CAA) records forbid the CA from issuing a certificate [RFC8555]
compound Specific error conditions are indicated in the "subproblems" array [RFC8555]
connection The server could not connect to validation target [RFC8555]
dns There was a problem with a DNS query during identifier validation [RFC8555]
externalAccountRequired The request must include a value for the "externalAccountBinding" field [RFC8555]
incorrectResponse Response received didn't match the challenge's requirements [RFC8555]
invalidContact A contact URL for an account was invalid [RFC8555]
malformed The request message was malformed [RFC8555]
orderNotReady The request attempted to finalize an order that is not ready to be finalized [RFC8555]
rateLimited The request exceeds a rate limit [RFC8555]
rejectedIdentifier The server will not issue certificates for the identifier [RFC8555]
serverInternal The server experienced an internal error [RFC8555]
tls The server received a TLS error during validation [RFC8555]
unauthorized The client lacks sufficient authorization [RFC8555]
unsupportedContact A contact URL for an account used an unsupported protocol scheme [RFC8555]
unsupportedIdentifier An identifier is of an unsupported type [RFC8555]
userActionRequired Visit the "instance" URL and take actions specified there [RFC8555]
autoRenewalCanceled The short-term certificate is no longer available because the auto-renewal Order has been explicitly [RFC8739]
canceled by the IdO
autoRenewalExpired The short-term certificate is no longer available because the auto-renewal Order has expired [RFC8739]
autoRenewalCancellationInvalid A request to cancel an auto-renewal Order that is not in state "valid" has been received [RFC8739]
autoRenewalRevocationNotSupported A request to revoke an auto-renewal Order has been received [RFC8739]
unknownDelegation An unknown configuration is listed in the delegation attribute of the order request [RFC9115]
onionCAARequired The CA only supports checking the CAA for Hidden Services in-band, but the client has not provided [RFC9799]
an in-band CAA
alreadyReplaced The request specified a predecessor certificate that has already been marked as replaced [RFC9773]
ACME Resource Types
Registration Procedure(s)
Specification Required
Expert(s)
Richard Barnes, Aaron Gable
Reference
[RFC8555]
Available Formats
[IMG]
CSV
Field Name Resource Type Reference
newNonce New nonce [RFC8555]
newAccount New account [RFC8555]
newOrder New order [RFC8555]
newAuthz New authorization [RFC8555]
revokeCert Revoke certificate [RFC8555]
keyChange Key change [RFC8555]
meta Metadata object [RFC8555]
renewalInfo RenewalInfo object [RFC9773]
ACME Directory Metadata Fields
Registration Procedure(s)
Specification Required
Expert(s)
Richard Barnes, Aaron Gable
Reference
[RFC8555]
Available Formats
[IMG]
CSV
Field Name Field Type Reference
termsOfService string [RFC8555]
website string [RFC8555]
caaIdentities array of string [RFC8555]
externalAccountRequired boolean [RFC8555]
auto-renewal object [RFC8739]
delegation-enabled boolean [RFC9115]
allow-certificate-get boolean [RFC9115]
subdomainAuthAllowed boolean [RFC9444]
onionCAARequired boolean [RFC9799]
ACME Identifier Types
Registration Procedure(s)
Specification Required
Expert(s)
Richard Barnes, Aaron Gable
Reference
[RFC8555]
Available Formats
[IMG]
CSV
Label Reference
dns [RFC8555]
ip [RFC8738]
email [RFC8823][RFC-ietf-emailcore-rfc5321bis-43][RFC6531]
TNAuthList [RFC9448]
bundleEID [RFC-ietf-acme-dtnnodeid-18]
NfInstanceId [3GPP TS 33.310]
ACME Validation Methods
Registration Procedure(s)
Specification Required
Expert(s)
Richard Barnes, Aaron Gable
Reference
[RFC8555]
Available Formats
[IMG]
CSV
Label Identifier Type ACME Reference
http-01 dns Y [RFC8555]
dns-01 dns Y [RFC8555]
tls-sni-01 RESERVED N [RFC8555]
tls-sni-02 RESERVED N [RFC8555]
http-01 ip Y [RFC8738]
tls-alpn-01 ip Y [RFC8738]
tls-alpn-01 dns Y [RFC8737]
email-reply-00 email Y [RFC8823]
tkauth-01 TNAuthList Y [RFC9447]
onion-csr-01 dns Y [RFC9799]
bp-nodeid-00 bundleEID Y [RFC-ietf-acme-dtnnodeid-18]
tkauth-01 NfInstanceId Y [3GPP TS 33.310]
ACME Order Auto-Renewal Fields
Registration Procedure(s)
Specification Required
Expert(s)
Yaron Sheffer, Diego R. Lopez, Thomas Fossati, Aaron Gable
Reference
[RFC8739]
Available Formats
[IMG]
CSV
Field Name Field Type Configurable Reference
start-date string true [RFC8739]
end-date string true [RFC8739]
lifetime integer true [RFC8739]
lifetime-adjust integer true [RFC8739]
allow-certificate-get boolean true [RFC8739]
ACME Directory Metadata Auto-Renewal Fields
Registration Procedure(s)
Specification Required
Expert(s)
Yaron Sheffer, Diego R. Lopez, Thomas Fossati, Aaron Gable
Reference
[RFC8739]
Available Formats
[IMG]
CSV
Field Name Field Type Reference
min-lifetime integer [RFC8739]
max-duration integer [RFC8739]
allow-certificate-get boolean [RFC8739]
STAR Delegation CSR Template Extensions
Registration Procedure(s)
Specification Required
Expert(s)
Yaron Sheffer, Diego R. Lopez, Thomas Fossati, Aaron Gable
Reference
[RFC9115]
Available Formats
[IMG]
CSV
Extension Name Extension Syntax and Reference Mapping to X.509 Certificate Extension
keyUsage [RFC9115, Appendix A] [RFC5280, Section 4.2.1.3]
extendedKeyUsage [RFC9115, Appendix A] [RFC5280, Section 4.2.1.12]
subjectAltName [RFC9115, Appendix A] [RFC5280, Section 4.2.1.6] (note that only specific name formats are allowed: URI, DNS name,
email address)
ACME Authority Token Challenge Types
Registration Procedure(s)
Specification Required
Expert(s)
Mary Barnes, Aaron Gable
Reference
[RFC9447]
Available Formats
[IMG]
CSV
Label Description Reference
atc JSON Web Token (JWT) challenge type [RFC9447]
ACME RenewalInfo Object Fields
Registration Procedure(s)
Specification Required
Expert(s)
Richard Barnes, Aaron Gable
Reference
[RFC9773]
Available Formats
[IMG]
CSV
Field Name Field Type Reference
suggestedWindow object [RFC9773]
explanationURL string [RFC9773]
Licensing Terms
Presently we were in a very dark road, and at a point where it dropped suddenly between steep sides we halted in black shadow. A gleam of pale sand, a whisper of deep flowing waters, and a farther glimmer of more sands beyond them challenged our advance. We had come to a "grapevine ferry." The scow was on the other side, the water too shoal for the horses to swim, and the bottom, most likely, quicksand. Out of the blackness of the opposite shore came a soft, high-pitched, quavering, long-drawn, smothered moan of woe, the call of that snivelling little sinner the screech-owl. Ferry murmured to me to answer it and I sent the same faint horror-stricken tremolo back. Again it came to us, from not farther than one might toss his cap, and I followed Ferry down to the water's edge. The grapevine guy swayed at our side, we heard the scow slide from the sands, and in a few moments, moved by two videttes, it touched our shore. Soon we were across, the two videttes riding with us, and beyond a sharp rise, in an old opening made by the swoop of a hurricane, we entered the silent unlighted bivouac of Ferry's scouts. Ferry got down and sat on the earth talking with Quinn, while the sergeants quietly roused the sleepers to horse. Plotinus is driven by this perplexity to reconsider the whole theory of Matter.477 He takes Aristotle¡¯s doctrine as the groundwork of his investigation. According to this, all existence is divided into Matter and Form. What we know of things¡ªin other words, the sum of their differential characteristics¡ªis their Form. Take away this, and the unknowable residuum is their Matter. Again, Matter is the vague indeterminate something out of which particular Forms are developed. The two are related as Possibility to Actuality, as the more generic to the more specific substance through every grade of classification and composition. Thus there are two Matters, the one sensible and the other intelligible. The former constitutes the common substratum of bodies, the other the common element of ideas.478 The general distinction between Matter and Form was originally suggested to Aristotle by Plato¡¯s remarks on the same subject; but he differs325 from his master in two important particulars. Plato, in his Timaeus, seems to identify Matter with space.479 So far, it is a much more positive conception than the ?λη of the Metaphysics. On the other hand, he constantly opposes it to reality as something non-existent; and he at least implies that it is opposed to absolute good as a principle of absolute evil.480 Thus while the Aristotelian world is formed by the development of Power into Actuality, the Platonic world is composed by the union of Being and not-Being, of the Same and the Different, of the One and the Many, of the Limit and the Unlimited, of Good and Evil, in varying proportions with each other. The Lawton woman had heard of an officer's family at Grant, which was in need of a cook, and had gone there. [See larger version] On the 8th of July an extraordinary Privy Council was summoned. All the members, of whatever party, were desired to attend, and many were the speculations as to the object of their meeting. The general notion was that it involved the continuing or the ending of the war. It turned out to be for the announcement of the king's intended marriage. The lady selected was Charlotte, the second sister of the Duke of Mecklenburg-Strelitz. Apart from the narrowness of her education, the young princess had a considerable amount of amiability, good sense, and domestic taste. These she shared with her intended husband, and whilst they made the royal couple always retiring, at the same time they caused them to give, during their lives, a moral air to their court. On the 8th of September Charlotte arrived at St. James's, and that afternoon the marriage took place, the ceremony being performed by the Archbishop of Canterbury. On the 22nd the coronation took place with the greatest splendour. Mother and girls were inconsolable, for each had something that they were sure "Si would like," and would "do him good," but they knew Josiah Klegg, Sr., well enough to understand what was the condition when he had once made up his mind. CHAPTER V. THE YOUNG RECRUITS Si proceeded to deftly construct a litter out of the two guns, with some sticks that he cut with a knife, and bound with pawpaw strips. His voice had sunk very low, almost to sweetness. A soft flurry of pink went over her face, and her eyelids drooped. Then suddenly she braced herself, pulled herself taut, grew combative again, though her voice shook. HoME²Ô¾®Ïè̫ʲôÐÇ×ù
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