chinese-remainder-theorem

RunTime Error System.Security.Cryptography.CryptographicException: 'Bad Data. ' in vb.net when trying to import RSA parameters

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问题 Here's the code I am not sure if there's any hidden error but on runtime when trying to import the rsa parameters it pops up that error Function ModInverse(ByVal a As BigInteger, ByVal b As BigInteger) As BigInteger Dim b0 As BigInteger = b Dim t As BigInteger Dim q As BigInteger Dim x0 As BigInteger = 0 Dim x1 As BigInteger = 1 If b = 1 Then Return 1 While a > 1 q = BigInteger.Divide(a, b) t = b b = BigInteger.Remainder(a, b) a = t t = x0 x0 = BigInteger.Subtract(x1, BigInteger.Multiply(q,

RunTime Error System.Security.Cryptography.CryptographicException: 'Bad Data. ' in vb.net when trying to import RSA parameters

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Restore a number from several its remainders (chinese remainder theorem)

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问题 I have a long integer number, but it is stored not in decimal form, but as set of remainders. So, I have not the N number, but set of such remainders: r_1 = N % 2147483743 r_2 = N % 2147483713 r_3 = N % 2147483693 r_4 = N % 2147483659 r_5 = N % 2147483647 r_6 = N % 2147483629 I know, that N is less than multiplication of these primes, so chinese remainder theorem does work here ( http://en.wikipedia.org/wiki/Chinese_remainder_theorem ). How can I restore N in decimal, if I have this 6

Mapping RSA Encryption Parameters from CRT (Chinese remainder theorem) to .NET format

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I need to implement RSA encryption/decryption using C# I have a private key with following parameters: mod n , exponent , p , q , dP , dQ , and (p -1 mod q) Above parameters are explained in Chinese remainder algorithm However C#.NET implementation of the RSA has different parameter set as following: Modulus , Exponent , P , Q , DP , DQ , D , InverseQ When I'm trying to map the data from CRT to DOTNET , I get error Bad Data For p , q , dP and dQ the mapping is obvious but about the rest of parameters I'm not sure. It would be great if I can get help mapping these paramters James K Polk mod n

Mapping RSA Encryption Parameters from CRT (Chinese remainder theorem) to .NET format

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问题 I need to implement RSA encryption/decryption using C# I have a private key with following parameters: mod n , exponent , p , q , dP , dQ , and (p -1 mod q) Above parameters are explained in Chinese remainder algorithm However C#.NET implementation of the RSA has different parameter set as following: Modulus , Exponent , P , Q , DP , DQ , D , InverseQ When I'm trying to map the data from CRT to DOTNET , I get error Bad Data For p , q , dP and dQ the mapping is obvious but about the rest of

How to calculate D for RSA encryption from P,Q and E

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I am trying to find D using P , Q and E ( Dp , Dq and (p -1 mod q) are available too). According to this answer and this answer and update for this question using following method I should get D . To test this I generated Key pair and tried to calculate components from existing ones and compare the result with originals. All the results are good except for D . there is something wrong with my calculation which I copied from above answers. it would be great if someone can tell me what I'm doing wrong. Test Code using System; using System.Numerics; using System.Security.Cryptography; using

How to calculate D for RSA encryption from P,Q and E

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问题 I am trying to find D using P , Q and E ( Dp , Dq and (p -1 mod q) are available too). According to this answer and this answer and update for this question using following method I should get D . To test this I generated Key pair and tried to calculate components from existing ones and compare the result with originals. All the results are good except for D . there is something wrong with my calculation which I copied from above answers. it would be great if someone can tell me what I'm