What is the name of the encryption algorithm?
RSA is named for the creators – Rivest, Shamir, Adleman – and it is a manner of generating public and private keys. Technically there are two RSA algorithms (one used for digital signatures, and one used for asymmetric encryption.) – this article covers the asymmetric encryption algorithm.
How to decrypt a string with unknown encryption algorithm?
Well, the string is likely Base64 encoded. If you decode it, you should get an effectively random piece of binary data if its encrypted (EDIT: As others have shown, it isn’t encrypted, but the following would still apply if it were) By checking the length, you can determine the block-size of the cipher.
Which is the best algorithm to find a key?
Hash lookup is currently the most widely used technique to find appropriate data by key or ID. We access data by its index. Previously we relied on Sorting+Binary Search to look for index whereas now we use hashing.
Are there any problems with symmetric encryption algorithms?
As a general overview, there was a major problem with symmetric algorithms when they were first created – they only functioned effectively if both parties already knew the shared secret. If they didn’t, securely exchanging a key without a third party eves-dropping was extremely difficult.
What does GnuPG do if no preferences are given?
Per default, GnuPG will read the recipient’s algorithm preferences and take the first algorithm in that list it supports (in other words, it takes the most-preferred supported algorithm the recipient asks for). If no preferences are given (or –symmetric is used for symmetric encryption using a passphrase), it chooses a “safe” one.
Which is the default algorithm in GnuPG 2.1?
GnuPG 2.1 uses the same algorithms for the RFC-compliant settings. For digest algorithms, similar algorithm preference inference is performed. If –verbose is set as an option, the used algorithm is printed. An exception is the Modification Detection Code Packet, which only allows SHA-1 with no algorithm choice as defined by the standard.