StackOverflow2013

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PO
primarykey
Id
20068340
data
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0
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2013-11-19T09:57:53.957
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2013-11-19T09:57:53.957
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0
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1340291
ParentId
16680631
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2
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0
ViewCount
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LastEditorDisplayName
text
Body
the pkcs1pad2 function converted from javascript to java: <pre><code>public BigInteger pkcs1pad2(String data,int keysize){ byte[] buffer=new byte[keysize]; Random rg=new Random(); if(keysize < data.length()+11) return null; int i = data.length() - 1; while(i >= 0 && keysize > 0){ --keysize; buffer[keysize] = (byte) data.charAt(i); i--; } --keysize; buffer[keysize] = 0; while(keysize > 2){ --keysize; buffer[keysize] = (byte) (rg.nextInt(254)+1); } --keysize; buffer[keysize] = 2; --keysize; buffer[keysize] = 0; return new BigInteger(buffer); } </code></pre> the rsa encription: <a href="http://hc.apache.org/downloads.cgi" rel="nofollow">http://hc.apache.org/downloads.cgi</a> <pre><code>//you need httpcomponents-client-4.3.1-bin.zip from apache.org //this contains working Base64 encoder! import org.apache.commons.codec.binary.Base64; public String encrypt(String data,String modulus,String exponent) throws UnsupportedEncodingException{ byte[] exp=Helper.hexToBytes(exponent.toCharArray()); byte[] mod=Helper.hexToBytes(modulus.toCharArray()); BigInteger expB=new BigInteger(exp); BigInteger modB=new BigInteger(mod); BigInteger data2=this.pkcs1pad2(data, (modB.bitLength()+7)>>3); BigInteger data3=data2.modPow(expB, modB); byte[] encoding = (new Base64()).encode(Helper.hexToBytes(data3.toString(16).toCharArray())); return new String(encoding, "US-ASCII"); } </code></pre> and the Helper.HexToBytes: <pre><code> public static byte[] hexToBytes(char[] hex)throws IllegalArgumentException{ byte[] data = new byte[hex.length / 2]; for (int i = 0, j = 0; j < data.length; ++j){ int hi = Character.digit(hex[i++], 16); int lo = Character.digit(hex[i++], 16); if ((hi < 0) || (lo < 0)) throw new IllegalArgumentException(); data[j] = (byte) (hi << 4 | lo); } return data; } </code></pre>
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Title
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PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POHow do I encrypt Crypto-JS keys with JSBN?
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 PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. This table or related slice is empty.
UserOwnerUserId
1. USscherzne.betti
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