Definition ∞ Ciphertext transformation refers to the process of altering encrypted data without decrypting it first. This operation permits specific modifications or re-encryptions of ciphertext, enabling various privacy-preserving computations or access control mechanisms. It is a fundamental component in advanced cryptographic schemes like homomorphic encryption and proxy re-encryption. The integrity of the original plaintext remains protected throughout this process.
Context ∞ Ciphertext transformation is a key concept in news related to privacy-enhancing technologies and secure data handling within blockchain environments. Its application is relevant for understanding advancements in confidential smart contracts, secure multi-party computation, and delegated data access in decentralized storage solutions. Developments in this field directly impact the privacy and utility of digital assets and their associated data.
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