Cryptographic Operations
The Builder Vault TSM supports the following cryptographic signing operations:
| Operation | Parameters |
|---|---|
| ECDSA | secp256k1 |
| ECDSA | P-224 |
| ECDSA | P-256 |
| ECDSA | P-384 |
| ECDSA | P-521 |
| ECDSA / Starknet | StarkCurve |
| Schnorr / Ed25519 (EdDSA) | Edwards25519 |
| Schnorr / Ed448 (EdDSA) | Edwards448 |
| Schnorr / BIP340 ("Taproot") | secp256k1 |
| Schnorr / Mina | PallasMina |
| Schnorr / Zillliqa | secp256k1 |
| Schnorr / sr25519 | ristretto255 |
| RSA PKCS#1v1.5 | 2048, 3072, 4096 bit keys |
| RSA PSS | 2048, 3072, 4096 bit keys |
In addition, the Builder Vault also supports other cryptographic operations:
| Primitive | Parameters | Operations |
|---|---|---|
| AES-CTR | Key size 128, 192, 256 | Keystream |
| AES-CBC | Key size 128, 192, 256 | Encrypt, Decrypt |
| AES-GCM | Key size 128, 192, 256 | Encrypt, Decrypt |
| AES-CMAC | Key size 128 | Digest |
| HMAC-SHA2-256 | Key size 1-256 bytes | Digest |
| HMAC-SHA2-512 | Key size 1-256 bytes | Digest |
| RSA OAEP | Key size 2048, 3072, 4096 | Encrypt, Decrypt |
| RSA x.509 (raw) | Key size 2048, 3072, 4096 | Encrypt, Sign |
| ECDH | Curves: secp256k1, P-256, P-384, P-521 | Key agreement |
| RFC 5649 | Key size 128 | AES Key Wrap with Padding |
| AN10922 | Key size 128 | Symmetric Key Derivation |
The CMAC, RFC5649 and AN10922 operations are currently only available in the Builder Vault SDKv1. Note that the symmetric operations (AES, HMAC, RFC5649, AN10922) only work for specific threshold settings.
MPC Protocols
Blockdaemon Builder Vault MPC solutions are based on public research (some of which was performed by the Blockdaemon team), this includes protocols from the following research papers:
- [MRZ15] Payman Mohassel, Mike Rosulek, Ye Zhang: Fast and Secure Three-party Computation: The Garbled Circuit Approach. CCS 2015: 591-602
- [DJNP+18] Ivan Damgård, Thomas Pelle Jakobsen, Jesper Buus Nielsen, Jakob Illeborg Pagter, Michael Bæksvang Østergård: Fast Threshold ECDSA with Honest Majority. SCN 2020: 382-400
- [DKLs19] Jack Doerner, Yashvanth Kondi, Eysa Lee, Abhi Shelat: Threshold ECDSA from ECDSA Assumptions: The Multiparty Case. IEEE Symposium on Security and Privacy 2019: 1051-1066
- [WRK17] Xiao Wang, Samuel Ranellucci, Jonathan Katz: Authenticated Garbling and Efficient Maliciously Secure Two-Party Computation. CCS 2017: 21-37
Additional Features
In addition to the cryptographic operations, Builder Vault has a number of features, for example:
Updated 12 days ago