| A nonce is a unique number that is generated for use in cryptography. The term stands for "number used once." Generally speaking, nonce values are added to encrypted data in order to disguise repeated patterns. Attackers often look for repeated patterns to try and identify corresponding sequences in related messages. Uses for nonce values include: Hashing - nonce values are used to create cryptographic hash functions. Identity and Authentication - nonce values ensure that online orders can't be changed and are only processed once. Electronic signatures - nonce values can be used as private keys to create, compare and verify e-signatures. Asymmetric cryptography - two unique nonce values are exchanged in public key cryptography. One value is provided by the client while the other is provided by the server. Nonces can be either random or sequential. A random nonce is produced by stringing arbitrary numbers together, while a sequential nonce is produced incrementally. The most effective nonces have both random and sequential segments. Continue reading about nonces... | 
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