A BLS digital signature, also known as Boneh–Lynn–Shacham[1] (BLS), is a cryptographic signature scheme which allows a user to verify that a signer is authentic.
The scheme uses a bilinear pairing for verification, and signatures are elements of an elliptic curve group. Working in an elliptic curve group provides some defense against index calculus attacks (with the caveat that such attacks are still possible in the target group of the pairing), allowing shorter signatures than FDH signatures for a similar level of security.
Signatures produced by the BLS signature scheme are often referred to as short signatures, BLS short signatures, or simply BLS signatures.[2] The signature scheme is provably secure (the scheme is existentially unforgeable under adaptive chosen-message attacks) in the random oracle model assuming the intractability of the computational Diffie–Hellman problem in a gap Diffie–Hellman group.[1]
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and 23 Related for: BLS digital signature information
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