Cyphertalk

👋 Welcome to my spot on the web.

I'm Philipp, a Software Engineer who loves Cryptography as it's one of the few technologies that empowers individuals in a permissionless manner.

On my website you'll find various resources and deep dives into topics related to Cryptography, Data Privacy and Data Security.

Feel free to send me a message if you want to get in touch.

Featured

• Cryptography Wiki

  An actively maintained collection of notes I created throughout my learning journey.

• Cryptolab Repository

  From scratch implementations of Cryptographic primitives and protocols.

• Cryptography Resources

  A curated list of resources useful when studying Cryptography and its applications.

Recent Posts

• ChaCha20

  ChaCha20 is a software-friendly stream cipher based on ARX semantics that allows for the encryption and decryption of arbitrary data.

• Proxy Re-Encryption

  Proxy Re-Encryption allows an untrusted third party to modify a ciphertext that was encrypted under key A to be decryptable with a different key B without learning anything about the plaintext or the private keys involved.

• Stealth Address

  A Stealth Address is an address that can be derived by any third party but only controlled by the owner of the linked private key.

• Adaptor Signature

  An Adaptor Signature allows for the creation of a partial signature that can be turned into a full signature by applying a secret value which itself is revealed once the full signature is publicly shared.

• Lagrange Interpolation

  Lagrange Interpolation is used to reconstruct any degree n polynomial using at least n + 1 of its evaluations.

• ECDSA Adaptor Signature

  An ECDSA Signature can be modified to create an adaptor signature that's only valid when a secret value is incorporated which itself is revealed when the adapted signature is publicly shared.

• Two-Party ECDSA

  2P-ECDSA is a protocol that allows two parties to jointly create digital signatures over messages via a shared private key that neither party has full access to or control over.

• Elliptic Curve Digital Signature Algorithm

  ECDSA is used to create digital signatures over messages which can be non-interactively verified.

• Pedersen Commitment Scheme

  A Commitment Scheme is a mechanism to ensure that a value that was committed to can't be changed after the fact.

• Hash-Based Commitment Scheme

  A Commitment Scheme is used when one wants to guarantee that a value that was chosen can't be changed afterwards.