A Deepness in the Sky

"Are they trying to break the intercepts?"

"Yes. They have several of their largest computers—big as houses—flailing away at both ends of the Princeton/Lands Command microwave link. It would take them millions of years to come on the right decryption key...Oh." Xin's eyes got even wider. "Can we do that without them twigging?"

Nau got the point at almost the same moment. He asked the air: "Background: How are they generating test keys?"

After a second, a voice replied, "A pseudo-random walk, modified by what their mathematicians know about the Kindred's algorithms."

Qiwi was reading something in her huds. "Apparently the Accord is experimenting with distributed computation across the link. That's frivolous, since there are less than ten computers on their entire net. But we have a dozen snoopersats that pass across the lines of sight of their microwavelink. It would be easy to mung up what's going between their relays—that's how we were going to do our first inserts, anyway. In this case, we'll just make small changes when they are sending trial keys. It might be as few as a hundred bits, even counting the framing."

Reynolt: "Okay. Even if they investigate later, it would be a plausible glitch. Do it for more than one key, and I say it's too dangerous."

"One key would be enough, if it's for the right session."

Qiwi looked at Nau. "Tomas, it could work. It's low-risk, and we should be experimenting with active measures anyway. You know the Spiders are more and more interested in space activities. We may be forced to meddle a lot, fairly soon." She patted his shoulder, cajoling more publicly than ever before. No matter how cheerful she seemed, Qiwi had her own emotional stake in this.

But she's right. This could be the ideal first sending for A

They didn't cheer, but Nau sensed enthusiasm and abject gratitude as the petitioners stood and floated out of the room.

Qiwi started to follow them, then turned quickly back and kissed Nau on the forehead. "Thanks, Tomas." And then she was gone with the others.

He turned to the only remaining visitor, Kal Omo. "Keep an eye on them, Sergeant. I'm afraid things will be more complicated from now on."

During the Great War, there had been times when Hrunkner U

Once, he went out to check on Underhill. Sherk was holed up in the signals lab, right below the top of the hill. Guilt lay like a blight on him, dimming the happy spirit of genius he used to bring to every problem. But the cobber was trying, substituting obsession for buoyant enthusiasm. He was pounding away with his computers, coopting everything he could. Whatever he was doing, it looked like nonsense to U

"It's math, not engineering, Hrunk."

"Yeah, number theory." This from the scruffy-looking postdoc whose lab this was. "We're listening for..." He leaned forward, apparently lost in the mysteries of his own programming. "We're trying to break the crypto intercepts."

Apparently he was talking about the signal fragments that had been detected coming out of the Princeton area just after the abduction. U

Jaybert what's-his-name just shrugged and continued with his work. Sherkaner didn't say anything either, but his aspect was desolate. This was the best he could do.

So U

Smith was back about an hour after sunrise. She looked through the negative reports quickly, a nervous edge to her movements. "I left Belga downtown with the local cops. Damnation, her comm isn't much better than the locals'."

U

Victory Smith slid down next to her old sergeant. "But she has kept the press off our backs. What word from Rachner?"

"He's down in the Accord-secure center." In fact, the young major did not confide in U

"He's so sure this is a pure Kindred operation. I don't know. They are in on it...but, you know the museum clerk is a trad? And the cobber working the museum's loading dock has disappeared. Belga's discovered he's a traditionalist, too. I think the local trads are in this up to their shoulders." Her voice was mild, almost contemplative. Later, much too much later, Hrunkner would remember back: The General's voice was mild, but she sat with every limb tensed.

Unfortunately, Hrunkner U

"What do you mean?" The sharpness in Victory's voice didn't penetrate his fatigue. He had years afterward to think back on this conversation, this single moment, to imagine the ways he might have avoided disaster. But the present did not feel the desperate gaze of the future, and he blundered on: "It's not their fault that they were brought into the world out-of-phase."

"It's not their fault my slippery modern ideals have killed them?" Smith's voice was a cutting hiss, something that even sorrow and fatigue could not block from U

"No, I—" But it was finally, irrevocably too late.

Smith was on her feet. She flicked a single long arm across his head, whiplike."Get out!"

U

Smith advanced on him. "Trad! Traitor!" Her hands jabbed with each word, killing blows just barely restrained. "For years you've pretended to be a friend, but always sneering and hating us. Enough!" She stopped her relentless approach, and brought her arms back to her sides. And Hrunkner knew she had capped her rage, and what she said now was cold and calm and considered...and it hurt even more than the wound across his eyes. "Take your moral baggage and go. Now."

Her aspect was something he had seen once or twice before, during the Great War, when their backs were against the wall and still she had not yielded. There would be no argument, no relenting. U