mta-hashcash April 2010

mta-hashcash@lists.lysator.liu.se

6 participants
9 discussions

Updated draft. MTA identification?
by nisse＠lysator.liu.se 24 Jun '26

24 Jun '26

I've updated the draft now (see http://www.lysator.liu.se/~nisse/misc/draft-nisse-hash-cash.txt), trying to address the issues raised by Simon and during the meeting. It now uses per-MTA keys. Then an important question is how an MTA is identified. Ideally, all border-MTA-s belogning to the same administrative domain should have the same identity (except perhaps secondaries). It's not clear if a mail server that accepts mail for multiple domains should have a single id, or one id per domain. I tried to write this down in section 4. Do we need new terminology for the things we identify? It's slightly confusing to say "MTA" when we are talking about not a single mail server, but a fuzzy group of them? Other notable changes: Authentication means signing a challenge string, of the same form as the hash cash challenges. Hash cash challenges now use hmac-sha1, with the string to be search for in the key argument, in order to make the construction somewhat more cryptographically sound. Most of the text on name-key semantics is deleted. /Niels

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21 Feb '26

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Th Stanley that there could be no development of the Congo without a
by Kirt Juarez 22 Apr '10

22 Apr '10

Itive. With modern machinery and enlarged white staffs will come a pretentious exploitation. The Government mines alone yield more than $2,000,000 worth of gold every year. Shortly before my arrival in the Congo what was heralded as the largest gold nugget ever discovered was found in the Kilo State Mine. It weighed twelve pounds. Stanleyville has a significance for me less romantic but infinitely more practical than the first contact with the Congo River. After long weeks of suffering from inefficient service I sacked Gerome and annexed a boy named Nelson. The way of it was this: In the Katanga I engaged a young Belgian who was on his way home, to act as secretary. He knew the native languages and could always convince the most stubborn black to part with an egg. Nelson was his servant. He was born on the Rhodesian border and spoke English. I could therefore upbraid him to my heart's content, which was not the case with Gerome. Besides, he was not handicapped with a wife. In Africa the servants adopt the names of their masters. Nelson had worked for an Englishman at Elizabethville and acquired his cognomen. I have not the slightest doubt that he now masquerades under mine. Be that as it may, Nelson was a model servant and he remained with me until that September day when I boarded the Belgium-bound boat at Matadi. Nelson reminded me more of the Georgia Negro than any other one that I saw in the Congo. He was almost coal black, he smiled continuously, and his teeth were wonderful to look at. He had an unusual capacity for work and also for food. I think he was the champion consumer of _chikwanga_ in the Congo. The _chikwanga_ is a glutinous dough made from the pounded root of the manioc plant and is the principal food of the native. It is rolled and cut up in pieces and then wrapped in green leaves. The favorite way of preparing it for consumption is to heat it in palm oil, although it is often eaten raw. Nelson bought these _chikwangas_ by the dozen. He was never without one. He even ate as he washed m

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would place them amongst diam
by Tusler Avetisyan 21 Apr '10

21 Apr '10

G lime-water, when it is coloured or dyed orange. In each little tubular cotton fibre the same change goes on as went on in the glass vessel, and as the tube or glass vessel looks orange, so does the fabric, because the cotton fibres or tubes are filled with the orange chromium compound. You see this is quite a different process of pigment colouring from that of rubbing or working a colour mechanically on to the fibre. Let us now turn to the substantive colours (Group I.), and see if we can further sub-divide this large group for the sake of convenience. We can divide the group into two--(_a_) such colours as exist ready formed in nature, and chiefly occur in plants, of which the following are the most important: indigo, archil or orchil, safflower, turmeric, and annatto; (_b_) the very large sub-group of the artificial or coal-tar colours. We will briefly consider now the dyestuffs mentioned in Group (_a_). _Natural Substantive Colours._--Indigo, one of the most valuable dyes, is the product of a large number of plants, the most important being different species of _indigofera_, which belong to the pea family. None of the plants (of which _indigofera tinctoria_ is the chief) contain the colouring matter in the free state, ready-made, so to say, but only as a peculiar colourless compound called _indican_, first discovered by Edward Schunck. When this body is treated with dilute mineral acids it splits up into Indigo Blue and a kind of sugar. But so easily is this change brought about that if the leaf of the plant be only bruised, the decomposition ensues, and a blue mark is produced through separation of the Indigo Blue. The possibility of dyeing with Indigo so readily and easily is due to the fact that Indigo Blue absorbs hydrogen from bodies that will yield it, and becomes, as we say, reduced to a body without colour, called Indigo White, a body richer in hydrogen than Indigo Blue, and a body that is soluble. If this white body (Indigo White) be exposed to the

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if he were readin
by Troy 15 Apr '10

15 Apr '10

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by Guckin 14 Apr '10

14 Apr '10

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Protestant, had the right to worship God in his own way
by Grigaliunas Herschaft 11 Apr '10

11 Apr '10

Y to help the settlement. As the weather was warm, the emigrants did not begin building log cabins at once, but slept on the ground, sheltered by boughs of trees. For a church they had an old tent, in which they met on Sunday. They were all members of the Church of England, or the Episcopal Church, and that tent was the first place of worship that we know of which was opened by Englishmen in America. When the hot weather came, many fell sick. Soon the whole settlement was like a hospital. Sometimes three or four would die in one night. Captain Smith, though not well himself, did everything he could for those who needed his help. When the sickness was over, some of the settlers were so discontented that they determined to seize the only vessel there was at Jamestown and go back to England. Captain Smith turned the cannon of the fort against them. The deserters saw that if they tried to leave the harbor he would knock their vessel to pieces, so they came back. One of the leaders of these men was tried and shot; the other was sent to Englan

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a measure, for the entire year. Rain i
by Enman Conerly 06 Apr '10

06 Apr '10

Leading industries of the country

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mta-hashcash April 2010