feat: a2 c

2026-05-01 01:32:01 +02:00
parent 9c2b167d3a
commit d3aa96fa84
4 changed files with 8 additions and 0 deletions
--- a/sheet02/a2/c.txt
+++ b/sheet02/a2/c.txt
@@ -0,0 +1,5 @@
+copy the publickey into a .pem file that starts with -----BEGIN PUBLIC KEY----- and ends with -----END PUBLIC KEY----- and has linebreaks after 64 chars.
+then decode the base64 signature
+base64 -d b-signature.txt > signature.bin
+verify using openssl
+openssl dgst -sha256 -verify c-pubkey.pem -signature signature.bin plaintext.txt