@class IDSMPPublicLegacyIdentity, NSString; @interface IDSLegacyDeviceMessageProtectionCypher : NSObject <ENCypher> @property (class, readonly) BOOL supportsSecureCoding; @property (readonly, nonatomic) IDSMPPublicLegacyIdentity *publicIdentity; @property (readonly, nonatomic) NSString *identifier; @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; + (id)cypherWithEndpoint:(id)a0 error:(id *)a1; - (void)encodeWithCoder:(id)a0; - (void).cxx_destruct; - (id)initWithPublicIdentity:(id)a0; - (id)initWithCoder:(id)a0; - (id)_fullIdentityFromAccountIdentity:(id)a0 error:(id *)a1; - (id)cypherData:(id)a0 withAccountIdentity:(id)a1 identifier:(id *)a2 error:(id *)a3; - (id)decypherData:(id)a0 withAccountIdentity:(id)a1 signingDevicePublicKey:(id)a2 identifier:(id)a3 error:(id *)a4; @end