# Technical Details

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


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