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vulnerability bulletin 21223

Bouncy Castle JCE: incorrect computation of NatX.square

Synthesis of the vulnerability

An attacker can use a computation error in NatX.square() in the ECDH implementation of Bouncy Castle JCE, in order to obtain a static key.
Impacted products: Bouncy Castle JCE.
Severity: 1/4.
Creation date: 29/11/2016.
Identifiers: VIGILANCE-VUL-21223.

Description of the vulnerability

The Bouncy Castle JCE product offers methods to square numbers: Nat192.square(),...
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