ubuntu 16.04 : getting signature by key uses weak digest algorithm (sha1)
4248
How to fix apt: Signature by key uses weak digest algorithm (SHA1)?
54553
How can I generate an MD5 hash?
135555
Is Ubuntu's archive signing key available via HTTPS somewhere?
133271
How do I verify a PGP signature?
54117
Can a file be maliciously changed in a way that maintains its original SHA-1 Hash?
31386
Is it safe to ignore the possibility of SHA collisions in practice?
145263
“Hash sum mismatch” error due to identical SHA1 and MD5 but different SHA256
65376
How common are weak RSA keys?
59771
Heartbleed: how to reliably and portably check the OpenSSL version?
38539
Why hash the message before signing it with RSA?
63824
Getting hash with symbol as keys for mongo in rails
118958
Check hash (MD4, MD5, SHA-1, and CRC) on Ubuntu 12.04 and 12.10
57357
How does browser generate symmetric key during SSL handshake
53294
Why can't we reverse hashes?
81433
Is there are a metric based on collisions to compare bad hash functions?
85711
verifiying ubuntu iso with repository gpg-keys
126437
pass and gpg: No public key