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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/DETAILS | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/doc/DETAILS b/doc/DETAILS index 83d9fea75..1624315ff 100644 --- a/doc/DETAILS +++ b/doc/DETAILS @@ -1311,6 +1311,43 @@ CREATE TABLE signatures ( S2K Specifier with an offset of 1000. +* Format of the OpenPGP TRUST packet + + According to RFC4880 (5.10), the trust packet (aka ring trust) is + only used within keyrings and contains data that records the user's + specifications of which key holds trusted introducers. The RFC also + states that the format of this packet is implementation defined and + SHOULD NOT be emitted to output streams or should be ignored on + import. GnuPG uses this packet in several additional ways: + + - 1 octet :: Trust-Value (only used by Subtype SIG) + - 1 octet :: Signature-Cache (only used by Subtype SIG; value must + be less than 128) + - 3 octets :: Fixed value: "gpg" + - 1 octet :: Subtype + - 0 :: Signature cache (SIG) + - 1 :: Key source on the primary key (KEY) + - 2 :: Key source on a user id (UID) + - 1 octet :: Key Source; i.e. the origin of the key: + - 0 :: Unknown source. + - 1 :: Direct import from a file. + - 2 :: Public keyserver. + - 3 :: Preferred keysrver. + - 4 :: Web Key Directory. + - 5 :: Web Key Directory via sub-domain. + - 6 :: OpenPGP DANE. + - 4 octets :: Time of last update. This is a a four-octet scalar + with the seconds since Epoch. + - 1 octet :: Scalar with the length of the following field. + - N octets :: String with the URL of the source. This may be a + zero-length string. + + If the packets contains only two octets a Subtype of 0 is assumed; + this is the only format recognized by GnuPG versions < 2.1.18. + Trust-Value and Signature-Cache must be zero for all subtypes other + than SIG. + + * Keyserver helper message format *This information is obsolete* |