What is the use of fingerprint in certificate?
A certificate thumbprint, also called a fingerprint, is a hash of a certificate, computed over all certificate data and its signature. Thumbprints are used as unique identifiers for cer- tificates, in applications when making trust decisions, in configuration files, and displayed in interfaces.
What is the thumbprint of a certificate?
A certificate thumbprint is an hexadecimal string that uniquely identifies a certificate. A thumbprint is calculated from the content of the certificate using a thumbprint algorithm. CES accepts Secure Hash Algorithm 1 (SHA-1) thumbprints in the 40-digit hexadecimal string form without spaces.
Is it safe to compare SSL certificate fingerprint?
The most trustworthy solution would be by comparing the whole certificate, because also protects you from hash collision attacks. As the other guys here stated you should make sure to use a secure/safe hashing algorithm. SHA-1 is no longer secure. Thanks for contributing an answer to Stack Overflow!
Can a certificate match a fingerprint hash?
Collisions are a fact of life with hash algorithms, even good ones, and you should guard against the possibility that a motivated attacker could craft a rogue certificate with a matching fingerprint hash.
Which is easier to verify fingerprints or public keys?
Just verifying fingerprints is much easier than to verify a long public key. Another example is the so called self certifying file system. Here again only hashes of public keys get exchanged over a secure channel. (I.e. these hashes are embedded in URLs.)
How to check if a certificate is installed in OpenSSL?
You can verify the serial number and fingerprint of a certificate using OpenSSL, and running the following command to return the serial number and SHA1 fingerprint: openssl x509 -noout -serial -fingerprint -sha1 -inform dem -in RootCertificateHere.crt