Definition ∞ Non repudiation ensures that a party cannot deny having sent or received a message or having performed a transaction. This is achieved through cryptographic mechanisms, such as digital signatures, which provide verifiable proof of origin and integrity. It is a critical security property in digital transactions and legal contexts. Non repudiation establishes accountability and trust in electronic interactions.
Context ∞ Non repudiation is a fundamental security principle in blockchain and digital asset transactions, providing a verifiable record of all activities. The discussion often addresses the legal enforceability of digital signatures and the mechanisms that prevent parties from disclaiming their actions. News reports on regulatory frameworks and technological advancements that strengthen the integrity of digital proofs.
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