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そうそう、OpenPGPで署名した鍵のデータ

$ echo Hello, World | gpg --sign | gpg --list-packets
# off=0 ctb=a3 tag=8 hlen=1 plen=0 indeterminate
:compressed packet: algo=1
# off=2 ctb=90 tag=4 hlen=2 plen=13
:onepass_sig packet: keyid B56C20316D6E8279
version 3, sigclass 0x00, digest 10, pubkey 1, last=1
# off=17 ctb=cb tag=11 hlen=2 plen=19 new-ctb
:literal data packet:
mode b (62), created 1663382107, name="",
raw data: 13 bytes
# off=38 ctb=89 tag=2 hlen=3 plen=435
:signature packet: algo 1, keyid B56C20316D6E8279
version 4, created 1663382107, md5len 0, sigclass 0x00
digest algo 10, begin of digest b3 38
hashed subpkt 33 len 21 (issuer fpr v4 F60960D80B224382CA8D831CB56C20316D6E8279)
hashed subpkt 2 len 4 (sig created 2022-09-17)
subpkt 16 len 8 (issuer key ID B56C20316D6E8279)
data: [3072 bits]