# Technical Details

- [Cryptographic Signatures](/a-deeper-dive/technical-details/cryptographic-signatures.md): Cryptographic signatures are used to prove identity and sign documents.
- [Data Encryption](/a-deeper-dive/technical-details/data-encryption.md): EthSign offers three different tiers of encryption.
- [Signature Verification](/a-deeper-dive/technical-details/signature-verification.md): Independently verify the validity of a digital signature from EthSign.
- [Storage Architecture](/a-deeper-dive/technical-details/storage-architecture.md)