diff --git a/book/source/diag/OpenPGP_Certificate.png b/book/source/diag/OpenPGP_Certificate.png
index a6288ba..94fa47a 100644
Binary files a/book/source/diag/OpenPGP_Certificate.png and b/book/source/diag/OpenPGP_Certificate.png differ
diff --git a/book/source/diag/OpenPGP_Certificate.svg b/book/source/diag/OpenPGP_Certificate.svg
index 363a762..af0bd64 100644
--- a/book/source/diag/OpenPGP_Certificate.svg
+++ b/book/source/diag/OpenPGP_Certificate.svg
@@ -1,12 +1,12 @@
OpenPGP Certificate- key creation timeComponent Key (primary)AAA1 8CBB 2546 85C5 8358 3205 63FD 37B67F33 00F9 FB0E C457 378C D29F 1026 98B3certification- key creation timeD07B 24EC 91A1 4DD2 40AC 2D53 E6C8 A9E0D07B 24EC 91A1 4DD2 40AC 2D53 E6C8 A9E05494 9A41 222E A738 576E D19C AEA3 DC995494 9A41 222E A738 576E D19C AEA3 DC99signingsigning- key creation time- key creation timeC0A5 8384 A438 E5A1 4F73 7124 26A4 D45DC0A5 8384 A438 E5A1 4F73 7124 26A4 D45DBAEE F4A3 9E6B 30B0 9D55 13F9 78AC CA94BAEE F4A3 9E6B 30B0 9D55 13F9 78AC CA94- key creation timeComponent Key (primary)AAA1 8CBB 2546 85C5 8358 3205 63FD 37B67F33 00F9 FB0E C457 378C D29F 1026 98B3certification- key creation timeAliceUser IDAlice Adams <alice@example.org>User ID
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