Adaptive Chosen Message

Definition ∞ Adaptive Chosen Message describes a cryptographic attack where an adversary selects messages to be signed by a legitimate party. This selection process is often adapted based on previous signature outputs obtained from the signing oracle. The attacker aims to gain sufficient information to forge a signature on a new, unchosen message. This type of attack is a critical consideration in the security analysis of digital signature schemes.
Context ∞ Understanding Adaptive Chosen Message attacks is vital for assessing the security robustness of digital signature algorithms used in blockchain protocols and digital asset transactions. News concerning vulnerabilities in cryptographic systems frequently references such attack models, highlighting potential risks to transaction integrity or user authentication. The ongoing evolution of cryptographic research consistently seeks to produce signature schemes demonstrably secure against these advanced adversarial strategies.