Preview API

Preview Features Specification

Show preview API for:

• BDH (Final)
• ECSDSA (Final)
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Contents

• Interfaces
• Fields

Interface	Preview Feature	Description
javacardx.security.bdh.BDHKeyAgreementPREVIEW	BDH	The BDHKeyAgreement interface can be used for KeyAgreement instances supporting Elliptic Curve Blinded Diffie-Hellman Key Exchange protocol as defined in EMV Contactless Specifications for Payment Systems - Book E Security and Key Management - Version 1.1 Feb 2025.

Field	Preview Feature	Description
javacard.security.KeyAgreement.ALG_EC_BDH_SECP256R1PREVIEW	BDH	Elliptic Curve Blinded Diffie-Hellman Key Exchange (ECBDH-KE) using the secp256r1 curve defined in FIPS 186-4.
javacard.security.Signature.SIG_CIPHER_ECSDSAPREVIEW	ECSDSA	Cipher algorithm SIG_CIPHER_ECSDSA choice for the cipherAlgorithm parameter of the getInstance(byte, byte, byte, boolean) method.
javacard.security.Signature.SIG_CIPHER_ECSDSA_OPTIMIZEDPREVIEW	ECSDSA	Cipher algorithm SIG_CIPHER_ECSDSA_OPTIMIZED choice for the cipherAlgorithm parameter of the getInstance(byte, byte, byte, boolean) method.