We may also be able to establish nonrepudiation through the use of encryption technologies, more specifically through the use of hash functions that can be used to digitally sign a communication or a file.
Which algorithm provides non-repudiation?
Asymmetric ciphers are characteristically used for identity authentication performed via digital signatures & certificates, for the distribution of symmetric bulk encryption key, non-repudiation services and for key agreement. Symmetric ciphers are used for bulk encryption of data due to their fast speed.
What is the main problem with the asymmetric encryption?
The other main issue is the problem of trust between two parties that share a secret symmetric key. Problems of trust may be encountered when encryption is used for authentication and integrity checking.