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-rw-r--r--doc/DETAILS6
-rw-r--r--doc/gpg.texi23
-rw-r--r--doc/gpgv.texi5
3 files changed, 33 insertions, 1 deletions
diff --git a/doc/DETAILS b/doc/DETAILS
index fd95e511c..29e39708b 100644
--- a/doc/DETAILS
+++ b/doc/DETAILS
@@ -527,6 +527,12 @@ pkd:0:1024:B665B1435F4C2 .... FF26ABB:
--assert-signer is used. The fingerprint is printed with
uppercase hex digits.
+*** ASSERT_PUBKEY_ALGO <fingerprint> <state> <algostr>
+ This is emitted when option --assert-pubkey-algo is used and the
+ signing algorithms is accepted according to that list if state is
+ 1 or denied if state is 0. The fingerprint is printed with
+ uppercase hex digits.
+
*** SIG_ID <radix64_string> <sig_creation_date> <sig-timestamp>
This is emitted only for signatures of class 0 or 1 which have
been verified okay. The string is a signature id and may be used
diff --git a/doc/gpg.texi b/doc/gpg.texi
index 2f5b613d8..26e0ebdcd 100644
--- a/doc/gpg.texi
+++ b/doc/gpg.texi
@@ -1917,6 +1917,29 @@ is guaranteed to return with an exit code of 0 if and only if a
signature has been encountered, is valid, and the key matches one of
the fingerprints given by this option.
+@item --assert-pubkey-algo @var{algolist}
+@opindex assert-pubkey-algo
+During data signature verification this options checks whether the
+used public key algorithm matches the algorithms given by
+@var{algolist}. This option can be given multiple times to
+concatenate more algorithms to the list; the delimiter of the list are
+either commas or spaces.
+
+The algorithm names given in the list may either be verbatim names
+like "ed25519" with an optional leading single equal sign, or being
+prefixed with ">", ">=", "<=", or "<". That prefix operator is
+applied to the number part of the algorithm name; for example 2048 in
+"rsa2048" or 384 in "brainpoolP384r1". If the the leading non-digits
+in the name matches, the prefix operator is used to compare the number
+part, a trailing suffix is ignored in this case. For example an
+algorithm list ">rsa3000, >=brainpool384r1, =ed25519" allows RSA
+signatures with more that 3000 bits, Brainpool curves 384 and 512,
+and the ed25519 algorithm.
+
+With this option gpg (and also gpgv) is guaranteed to return with an
+exit code of 0 if and only if all valid signatures on data are made
+using a matching algorithm from the given list.
+
@item --auto-key-locate @var{mechanisms}
@itemx --no-auto-key-locate
diff --git a/doc/gpgv.texi b/doc/gpgv.texi
index 2dd9576b6..54ab23383 100644
--- a/doc/gpgv.texi
+++ b/doc/gpgv.texi
@@ -140,6 +140,10 @@ This option enables a mode in which filenames of the form
@file{-&n}, where n is a non-negative decimal number,
refer to the file descriptor n and not to a file with that name.
+@item --assert-pubkey-algo @var{algolist}
+@opindex assert-pubkey-algo
+This option works in the same way as described for @command{gpg}.
+
@end table
@mansect return value
@@ -190,4 +194,3 @@ The default keyring with the allowed keys.
@mansect see also
@command{gpg}(1)
@include see-also-note.texi
-